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Accident case
Category brief summary: 事故案例
Guangwei Chemical Co., Ltd. organic plant explosion accident
Guangwei Chemical Co., Ltd. organic plant explosion accident
At6:40onAugust26th,2008,anexplosionoccurredintheGuangxiGuangweiChemicalCo.,Ltd.organicplantaffiliatedtoGuangxiVinylonGroupCo.,Ltd.,causing21deathsand59injuries.Thereare18villagesandcompanieswithin3kmofthefactory.Atotalof1,1,500employeesandtheirfamilieswereevacuated. AsofSeptember11,theaccidentcauseddirecteconomiclossesofabout75.86millionyuan. Itisthemostseriouschemicalaccidentinthecountryinthepast10years.   First,thefactoryprofile   GuangweiOrganicFactoryusespolyvinylacetylenetoproducepolyvinylalcohol. Themainproductionunitsaretankarea,synthesis,distillation,polymerization,alcoholysis,recovery,packagingandsoon. ItwascompletedandputintoproductioninOctober1980.Afterseveraltechnicalrenovationsandexpansions,theproductioncapacityofpolyvinylalcoholincreasedfrom10,000t/ato30,000t/a,andtheproductioncapacityofvinylacetatereached60,000t/a.   Theprocessofproducingpolyvinylalcoholbycalciumcarbideacetylenemethodis:acetylenefromthecalciumcarbideworkshopinthesynthesissectionandaceticacid,throughthecatalyst(zincacetate-activatedcarbon)toformareactionliquid→distillationsection,separationofvinylacetate,aceticacidandthelike. Vinylacetate→polymerizationsection,intheinitiator   Polyvinylacetatesolution→alcoholysisreactionisformedbythepolymerizationofarsenic(azobisisobutyronitrile),andreactedwithsodiumhydroxidetoobtainpolyvinylalcohol. Alcoholsolutionwasteliquid→recyclingsection,treatment.   Therawmaterials,intermediateproducts,finishedproductsandby-productsoftheplantmainlyincludeacetylene,aceticacid,vinylacetateandacetaldehyde,allofwhichareinflammableandexplosivechemicals.   Second,theaccidentpassed   OnthenightofAugust26,2008,49employeesofGuangweiOrganicFactorywereemployed.   0:00~6:00,productionisnormal. TheliquidlevelsofCC-601A,B,C,andEreactionliquidstoragetankswere41,50,48,and46m3,respectively.   At6:00,thetankareafoundthattheliquidleveloftheabovefourreactionliquidstoragetanksdecreasedoverall,thatis,thedispatchwasreported.   At6:40,thefirstexplosionoccurredinthewesternpartofthetankarea. Theejectedmaterialformsacloudofwhitemistthatdiffusesasthewindmovestothenorthsideofthesynthesis,distillationsectionandotherareas.   At6:44,therewasastrongexplosionnearthesyntheticsectionandthetankarea.Somebuildings,equipmentandpipelinesintheconstruction,distillation,alcoholysis,polymerizationandothersectionsweredamagedbytheexplosionshockwave.Alargenumberofmaterialsleakedseveraltimesandexploded.Asaresultofthefire,thetanksinthetankareaandtheSongbodypipelinesalsoexplodedandburned. Partoftheleakagematerialinthetankareaandeachsectionflowsintothesewer,causingtheplant'ssewer,sewagecollectiontankandtotaldrainageoutlettodeflagrate.   Theexplosioncausedalmostallthetankstobedamaged.ThetopofthetankofCC-602Bwasblowntothescalehouseat90monthesouthsideandstumbled.   TheblastwavealsosquashedtheheadsoftheninetrucksparkedoutsidetheSouthGate.   Inaddition,allthepumpsinthetankareaburnedout,theprocesspipelinewasburned90%,andthecablesandelectricalswitcheswerecompletelydestroyed.   Third,thecauseanalysisoftheaccident   First,thedirectcause   Duetothewiderangeofexplosionaccidents,largefireareaandheavydamage,theon-the-joboperationrecordsandkeyequipmentsuchasmajorequipmentandequipmentwereburnedordamaged.Twoon-dutyoperatorsinthetankareaandotheron-dutypersonnelwhomayknowthesituationatthescenewerekilled.Itisdifficulttoinvestigateandcollectevidence.   AsofOctober20,theaccidentinvestigationteamhasnotyetreachedanagreementonthedirectcause. Thefocusofthedebate?°ignitionsource?±,onlyavarietyofpossibilitiesorassumptions,lackofevidencetosupport,isinconclusive.   Second,indirectreasons   1.Five100m3storagetanksforstoringreactionliquidsinCC-601A~Eareusedinparallel. Ifanaccidentoccurs,theremainingfourwillbedestroyed. Cause:Theamountofleakageisparalyzed,andtheconsequencesoftheaccidentareslim.   2.Thelayoutoftanksandtanksandsafetyfacilitiesdonotmeettherequirementsofcurrentstandardsandregulations.   Thetanksinthe1tankgroupare3rows(currentrequirements:shouldnotexceed2rows)   2materialpumpisinstalledinthefiredam(currentrequirement:shouldbesetoutsidethefiredamandmeetthecorrespondingfirespacing)   3tankareanoflammablegasdetectionandalarmfacilities(currentrequirements:shouldbesetinthepossibleleakageofClassAgas(liquid)body)   4Thereisnoisolationvalveatthedischargeofthefirewall(currentrequirements:sewageandrainwater,isolationvalvesshouldbeinstalledatthedischargeoutlet)   3,equipmentsecuritymanagementconfusion   1DuringthemajorrepairperiodfromApriltoMaythisyear,theexpansionneedstoreplacethetankareatotherectificationsectionof2reactionliquidpumps. Theinletandoutletpipesarenotreplacedatthesametime. Thesizeheadisconnectedtotheoriginaltube. Theflowrateis↑,thehead↑willbringtheflowrate↑,thestaticelectricityishazard,theunderstandingisinsufficient,andthereisnocountermeasure.   Thefoamfireextinguishingsystemoriginallyinstalledinthe2tankareawasunusableafter1982duetolackofmaintenance.Itwasdismantledin1999.   3tankareaoperationruleswithouttankmaterialtemperaturecontrolrequirements,liquidlevelcontrolindicat
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At6:40onAugust26th,2008,anexplosionoccurredintheGuangxiGuangweiChemicalCo.,Ltd.organicplantaffiliatedtoGuangxiVinylonGroupCo.,Ltd.,causing21deathsand59injuries.Thereare18villagesandcompanieswithin3kmofthefactory.Atotalof1,1,500employeesandtheirfamilieswereevacuated. AsofSeptember11,theaccidentcauseddirecteconomiclossesofabout75.86millionyuan. Itisthemostseriouschemicalaccidentinthecountryinthepast10years.   First,thefactoryprofile   GuangweiOrganicFactoryusespolyvinylacetylenetoproducepolyvinylalcohol. Themainproductionunitsaretankarea,synthesis,distillation,polymerization,alcoholysis,recovery,packagingandsoon. ItwascompletedandputintoproductioninOctober1980.Afterseveraltechnicalrenovationsandexpansions,theproductioncapacityofpolyvinylalcoholincreasedfrom10,000t/ato30,000t/a,andtheproductioncapacityofvinylacetatereached60,000t/a.   Theprocessofproducingpolyvinylalcoholbycalciumcarbideacetylenemethodis:acetylenefromthecalciumcarbideworkshopinthesynthesissectionandaceticacid,throughthecatalyst(zincacetate-activatedcarbon)toformareactionliquid→distillationsection,separationofvinylacetate,aceticacidandthelike. Vinylacetate→polymerizationsection,intheinitiator   Polyvinylacetatesolution→alcoholysisreactionisformedbythepolymerizationofarsenic(azobisisobutyronitrile),andreactedwithsodiumhydroxidetoobtainpolyvinylalcohol. Alcoholsolutionwasteliquid→recyclingsection,treatment.   Therawmaterials,intermediateproducts,finishedproductsandby-productsoftheplantmainlyincludeacetylene,aceticacid,vinylacetateandacetaldehyde,allofwhichareinflammableandexplosivechemicals.   Second,theaccidentpassed   OnthenightofAugust26,2008,49employeesofGuangweiOrganicFactorywereemployed.   0:00~6:00,productionisnormal. TheliquidlevelsofCC-601A,B,C,andEreactionliquidstoragetankswere41,50,48,and46m3,respectively.   At6:00,thetankareafoundthattheliquidleveloftheabovefourreactionliquidstoragetanksdecreasedoverall,thatis,thedispatchwasreported.   At6:40,thefirstexplosionoccurredinthewesternpartofthetankarea. Theejectedmaterialformsacloudofwhitemistthatdiffusesasthewindmovestothenorthsideofthesynthesis,distillationsectionandotherareas.   At6:44,therewasastrongexplosionnearthesyntheticsectionandthetankarea.Somebuildings,equipmentandpipelinesintheconstruction,distillation,alcoholysis,polymerizationandothersectionsweredamagedbytheexplosionshockwave.Alargenumberofmaterialsleakedseveraltimesandexploded.Asaresultofthefire,thetanksinthetankareaandtheSongbodypipelinesalsoexplodedandburned. Partoftheleakagematerialinthetankareaandeachsectionflowsintothesewer,causingtheplant'ssewer,sewagecollectiontankandtotaldrainageoutlettodeflagrate.   Theexplosioncausedalmostallthetankstobedamaged.ThetopofthetankofCC-602Bwasblowntothescalehouseat90monthesouthsideandstumbled.   TheblastwavealsosquashedtheheadsoftheninetrucksparkedoutsidetheSouthGate.   Inaddition,allthepumpsinthetankareaburnedout,theprocesspipelinewasburned90%,andthecablesandelectricalswitcheswerecompletelydestroyed.   Third,thecauseanalysisoftheaccident   First,thedirectcause   Duetothewiderangeofexplosionaccidents,largefireareaandheavydamage,theon-the-joboperationrecordsandkeyequipmentsuchasmajorequipmentandequipmentwereburnedordamaged.Twoon-dutyoperatorsinthetankareaandotheron-dutypersonnelwhomayknowthesituationatthescenewerekilled.Itisdifficulttoinvestigateandcollectevidence.   AsofOctober20,theaccidentinvestigationteamhasnotyetreachedanagreementonthedirectcause. Thefocusofthedebate?°ignitionsource?±,onlyavarietyofpossibilitiesorassumptions,lackofevidencetosupport,isinconclusive.   Second,indirectreasons   1.Five100m3storagetanksforstoringreactionliquidsinCC-601A~Eareusedinparallel. Ifanaccidentoccurs,theremainingfourwillbedestroyed. Cause:Theamountofleakageisparalyzed,andtheconsequencesoftheaccidentareslim.   2.Thelayoutoftanksandtanksandsafetyfacilitiesdonotmeettherequirementsofcurrentstandardsandregulations.   Thetanksinthe1tankgroupare3rows(currentrequirements:shouldnotexceed2rows)   2materialpumpisinstalledinthefiredam(currentrequirement:shouldbesetoutsidethefiredamandmeetthecorrespondingfirespacing)   3tankareanoflammablegasdetectionandalarmfacilities(currentrequirements:shouldbesetinthepossibleleakageofClassAgas(liquid)body)   4Thereisnoisolationvalveatthedischargeofthefirewall(currentrequirements:sewageandrainwater,isolationvalvesshouldbeinstalledatthedischargeoutlet)   3,equipmentsecuritymanagementconfusion   1DuringthemajorrepairperiodfromApriltoMaythisyear,theexpansionneedstoreplacethetankareatotherectificationsectionof2reactionliquidpumps. Theinletandoutletpipesarenotreplacedatthesametime. Thesizeheadisconnectedtotheoriginaltube. Theflowrateis↑,thehead↑willbringtheflowrate↑,thestaticelectricityishazard,theunderstandingisinsufficient,andthereisnocountermeasure.   Thefoamfireextinguishingsystemoriginallyinstalledinthe2tankareawasunusableafter1982duetolackofmaintenance.Itwasdismantledin1999.   3tankareaoperationruleswithouttankmaterialtemperaturecontrolrequirements,liquidlevelcontrolindicat
Tianjin chemical company exploded 10 people dead
Tianjin chemical company exploded 10 people dead
Time of issue : 2019-05-07 15:25:00
OnAugust7,2006,14..57,anexplosionoccurredinthenitrificationworkshopofTianjinYikunFineChemicalTechnologyDevelopmentCo.,Ltd.inXindaIndustrialPark,XianshuiyuTown,JinnanDistrict,Tianjin,causing10deaths(oneofthemseriouslyinjured),12dayslaterdied),3peoplewereseriouslyinjured. Thecompanyisaprivatejoint-stockenterpriseestablishedinJune2000withatotalinvestmentof9.7millionyuan.ItstartedtrialproductioninJuly2003andmainlyproducesxylenemusk,sunflowermuskandketonemusk.   Thedirectcauseoftheaccident:ThespeedoftheNo.5nitrationreactorwasimproperlycontrolledduringtheprocessofaddingconcentratedsulfuricacid,andthelocalchemicalreactionheatinthekettlerapidlyaccumulated,whichwasnotcooledintimeandcausedanexplosion.   TheimpactoftheNo.5reactorexplosionandtheexplosivedebriscausedtheNo.4,No.6andNo.3reactorstoexplodeoneafteranother,causingcasualties.   Themaincauseoftheaccident:   First,thelabororganizationisunreasonable   Enterpriseshaveseriousdefectsinfixedposts,quotas,andresponsibilities. Accordingtotherelevantoperationalregulations,thereshouldbe3full-timeoperatorsinthefeedingcontrolpositionofthenitrificationworkshop,butthecompanyhasarranged2people,oneofwhomisthesquadleaderandisresponsibleforotherworksuchasacidexchange.   Atotalof7reactorswereusedbeforetheaccident,andonlyonepersonwasoperating,whichcouldnotmeettheneedtostrictlycontrolthereactiontemperatureinthisposition.   Second,hiddendangersrectificationdoesnotpayattention   Enterprisesdonotpaymuchattentiontohiddendangers,andrectificationisweak. Beforetheaccident,thereweremanytimeswhenthereactionoverheatingcausedemergencydischarge,andthesystemforsupplyingchilledwatertothenitrificationreactoralsohadproblemssuchasinsufficientcapacity. Forthesehiddendangers,corporatelegalpersonsandprincipalsafetyproductionleadershavelearnedaboutit,buttheyhavenotpaidattentiontoitandhavenottakeneffectivemeasurestorectifyit.   Third,stafftrainingisnotimplemented   Thecompanyhasatraininginternshipsystemonitsbehalf. Infact,employeesarenotstrictlytrainedandassessedinaccordancewithrelevantrequirements. Theemployeesofthecompanywhowerekilledintheaccidentweremigrantworkersfromotherplaces.Theshortestperiodofemploymentwasonly8months.Thecompanycouldnotprovidecompletetrainingandassessmentmaterialsforthesepeople.Duringtheaccidentinvestigation,itwasfoundthattheoperator’simpropercontrolofthenitrificationreactiontemperaturemaycauseThedangeroftheexplosionisnottakenseriously.   AftertheSongDynastyaccident,theTianjinMunicipalCommitteeheldanexpansionmeetingtodeploya100-daycrackdownonthespecialrectificationofdangerouschemicalsinthecity.Allthehazardouschemicalsproductionenterpriseswithmajorhiddendangersweresuspended,rectified,andrectifiedwithinatimelimit.Allproductionconditionsmustbecloseddown,andmorethan200hazardouschemicalproductionenterprisesintheurbanareawillbemovedoutwithinthreeyears.   Theaccidentwascausedbytheoperator'sillegaloperation,butitessentiallyexposedtheproblemofcorporatesecurityandthe“twomainresponsibilities”ofgovernmentsupervision.   FacedwiththemostseriousmajorcasualtiesinthechemicalindustryinTianjinformanyyears,thisisthefirstmajorproductionsafetyaccidentinthecitythisyear.TheMunicipalSafetySupervisionBureauorganizedallpersonneltogotothesceneoftheaccidentforeducation,toreflect,andtoperformdutiesthatarenotinplace.Theplaceissummarizedasthefollowingfourmainissues:   First,thesupervisionworkisnotenough.Theimplementationoftheworkrequirementsatthegrassrootslevelandtheenterpriseisnotcomprehensiveandthesupervisionisnotcomprehensive.Thisisoneoftheimportantreasonsforthefailuretoimplementthemainresponsibilityoftheenterprise.   Second,thesupervisionofthelawisnotstrictenoughtocheckfordeadspotsandblindspots.Inparticular,thesupervisionofnon-publicownershipofhazardousunitsisnotcomprehensive,andthemarketaccessforhigh-riskenterprisesisnotstrict.   Third,thespecialrectificationisnotdetailedenoughtofocusonthesupervisionoftheproductionofhazardouschemicals,neglectingthesupervisionofuseandotherlinks,andgraspingthebasicinformationanddataofequipment,processes,products,andsafeoperationofenterprisesusinghazardouschemicals.comprehensive.   Fourth,theregulatorymeasuresarenotsuitableforthesupervisionteamorganizationconstruction,businessconstruction,workstyleconstruction,equipmentconstruction,etc.,whichcannotkeepupwiththedevelopmentofthesituation.Itisdifficulttoachievecomprehensivescience.
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OnAugust7,2006,14..57,anexplosionoccurredinthenitrificationworkshopofTianjinYikunFineChemicalTechnologyDevelopmentCo.,Ltd.inXindaIndustrialPark,XianshuiyuTown,JinnanDistrict,Tianjin,causing10deaths(oneofthemseriouslyinjured),12dayslaterdied),3peoplewereseriouslyinjured. Thecompanyisaprivatejoint-stockenterpriseestablishedinJune2000withatotalinvestmentof9.7millionyuan.ItstartedtrialproductioninJuly2003andmainlyproducesxylenemusk,sunflowermuskandketonemusk.   Thedirectcauseoftheaccident:ThespeedoftheNo.5nitrationreactorwasimproperlycontrolledduringtheprocessofaddingconcentratedsulfuricacid,andthelocalchemicalreactionheatinthekettlerapidlyaccumulated,whichwasnotcooledintimeandcausedanexplosion.   TheimpactoftheNo.5reactorexplosionandtheexplosivedebriscausedtheNo.4,No.6andNo.3reactorstoexplodeoneafteranother,causingcasualties.   Themaincauseoftheaccident:   First,thelabororganizationisunreasonable   Enterpriseshaveseriousdefectsinfixedposts,quotas,andresponsibilities. Accordingtotherelevantoperationalregulations,thereshouldbe3full-timeoperatorsinthefeedingcontrolpositionofthenitrificationworkshop,butthecompanyhasarranged2people,oneofwhomisthesquadleaderandisresponsibleforotherworksuchasacidexchange.   Atotalof7reactorswereusedbeforetheaccident,andonlyonepersonwasoperating,whichcouldnotmeettheneedtostrictlycontrolthereactiontemperatureinthisposition.   Second,hiddendangersrectificationdoesnotpayattention   Enterprisesdonotpaymuchattentiontohiddendangers,andrectificationisweak. Beforetheaccident,thereweremanytimeswhenthereactionoverheatingcausedemergencydischarge,andthesystemforsupplyingchilledwatertothenitrificationreactoralsohadproblemssuchasinsufficientcapacity. Forthesehiddendangers,corporatelegalpersonsandprincipalsafetyproductionleadershavelearnedaboutit,buttheyhavenotpaidattentiontoitandhavenottakeneffectivemeasurestorectifyit.   Third,stafftrainingisnotimplemented   Thecompanyhasatraininginternshipsystemonitsbehalf. Infact,employeesarenotstrictlytrainedandassessedinaccordancewithrelevantrequirements. Theemployeesofthecompanywhowerekilledintheaccidentweremigrantworkersfromotherplaces.Theshortestperiodofemploymentwasonly8months.Thecompanycouldnotprovidecompletetrainingandassessmentmaterialsforthesepeople.Duringtheaccidentinvestigation,itwasfoundthattheoperator’simpropercontrolofthenitrificationreactiontemperaturemaycauseThedangeroftheexplosionisnottakenseriously.   AftertheSongDynastyaccident,theTianjinMunicipalCommitteeheldanexpansionmeetingtodeploya100-daycrackdownonthespecialrectificationofdangerouschemicalsinthecity.Allthehazardouschemicalsproductionenterpriseswithmajorhiddendangersweresuspended,rectified,andrectifiedwithinatimelimit.Allproductionconditionsmustbecloseddown,andmorethan200hazardouschemicalproductionenterprisesintheurbanareawillbemovedoutwithinthreeyears.   Theaccidentwascausedbytheoperator'sillegaloperation,butitessentiallyexposedtheproblemofcorporatesecurityandthe“twomainresponsibilities”ofgovernmentsupervision.   FacedwiththemostseriousmajorcasualtiesinthechemicalindustryinTianjinformanyyears,thisisthefirstmajorproductionsafetyaccidentinthecitythisyear.TheMunicipalSafetySupervisionBureauorganizedallpersonneltogotothesceneoftheaccidentforeducation,toreflect,andtoperformdutiesthatarenotinplace.Theplaceissummarizedasthefollowingfourmainissues:   First,thesupervisionworkisnotenough.Theimplementationoftheworkrequirementsatthegrassrootslevelandtheenterpriseisnotcomprehensiveandthesupervisionisnotcomprehensive.Thisisoneoftheimportantreasonsforthefailuretoimplementthemainresponsibilityoftheenterprise.   Second,thesupervisionofthelawisnotstrictenoughtocheckfordeadspotsandblindspots.Inparticular,thesupervisionofnon-publicownershipofhazardousunitsisnotcomprehensive,andthemarketaccessforhigh-riskenterprisesisnotstrict.   Third,thespecialrectificationisnotdetailedenoughtofocusonthesupervisionoftheproductionofhazardouschemicals,neglectingthesupervisionofuseandotherlinks,andgraspingthebasicinformationanddataofequipment,processes,products,andsafeoperationofenterprisesusinghazardouschemicals.comprehensive.   Fourth,theregulatorymeasuresarenotsuitableforthesupervisionteamorganizationconstruction,businessconstruction,workstyleconstruction,equipmentconstruction,etc.,whichcannotkeepupwiththedevelopmentofthesituation.Itisdifficulttoachievecomprehensivescience.
Yunnan Ruili 4.9 earthquake caused 9 people injured 30,000 people transferred
Yunnan Ruili 4.9 earthquake caused 9 people injured 30,000 people transferred
ThewallsofsixhousesintheXiuxiuTownshipHealthCentercollapsed.Fortunately,therewerenocasualties. ReporterDaiChuanshe(mobilephonepicture)   ThehouseintheXiuxiuHealthCenterdormitorywasshaken   Thehousethatwascollapsed   Thepeopleaffectedbythedisasterareinastablemood. ReporterDaiChuanshe(mobilephonepicture)   AccordingtotheSeismologicalNetworkoftheSeismologicalBureauofYunnanProvince:At4:20amand5:25amonDecember26,2008,anearthquakeofmagnitude4.9andmagnitude4.0occurredcontinuouslyinRuiliCityofDehongDaiandJingpoAutonomousPrefecture. TheepicenterwaslocatedinRuoxiTownship,RuiliCity(97.46degreeseastlongitude,24.03degreesnorthlatitude),andtheearthquakefeltstronglyinmostpartsofthecity.   Asof7:50,9peoplewereinjuredinthe"12.26"earthquakeinRuiliCity,including2seriousinjuriesand7minorinjuries.Theinjuredarecurrentlyreceivingtreatment. Preliminarystatisticsshowthatmorethan100,000peoplehavebeenaffectedbythedisaster.Morethan30,000peoplehavebeenresettledandresettled,and13disasterrelieftentshavebeenissued.   LiXingshun,deputysecretaryoftheCPCDehongStateCommittee,YangYueguo,memberoftheStandingCommitteeoftheStatePartyCommitteeandsecretaryoftheRuiliMunicipalPartyCommittee,rushedtotheNationalPeople'sHospitalat6:10toseetheinjuredpeopleintheearthquake,understandtheresettlementsituationoftheinpatients,andaskthemedicalandhealthdepartmentstoorganizethecompetentmedicalstafftodotheirbest.Thewounded'srescuework,properlyplacedinpatients. (ReporterXiangLuCaiDaichuan)
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ThewallsofsixhousesintheXiuxiuTownshipHealthCentercollapsed.Fortunately,therewerenocasualties. ReporterDaiChuanshe(mobilephonepicture)   ThehouseintheXiuxiuHealthCenterdormitorywasshaken   Thehousethatwascollapsed   Thepeopleaffectedbythedisasterareinastablemood. ReporterDaiChuanshe(mobilephonepicture)   AccordingtotheSeismologicalNetworkoftheSeismologicalBureauofYunnanProvince:At4:20amand5:25amonDecember26,2008,anearthquakeofmagnitude4.9andmagnitude4.0occurredcontinuouslyinRuiliCityofDehongDaiandJingpoAutonomousPrefecture. TheepicenterwaslocatedinRuoxiTownship,RuiliCity(97.46degreeseastlongitude,24.03degreesnorthlatitude),andtheearthquakefeltstronglyinmostpartsofthecity.   Asof7:50,9peoplewereinjuredinthe"12.26"earthquakeinRuiliCity,including2seriousinjuriesand7minorinjuries.Theinjuredarecurrentlyreceivingtreatment. Preliminarystatisticsshowthatmorethan100,000peoplehavebeenaffectedbythedisaster.Morethan30,000peoplehavebeenresettledandresettled,and13disasterrelieftentshavebeenissued.   LiXingshun,deputysecretaryoftheCPCDehongStateCommittee,YangYueguo,memberoftheStandingCommitteeoftheStatePartyCommitteeandsecretaryoftheRuiliMunicipalPartyCommittee,rushedtotheNationalPeople'sHospitalat6:10toseetheinjuredpeopleintheearthquake,understandtheresettlementsituationoftheinpatients,andaskthemedicalandhealthdepartmentstoorganizethecompetentmedicalstafftodotheirbest.Thewounded'srescuework,properlyplacedinpatients. (ReporterXiangLuCaiDaichuan)
Xinjiang Jinghe police successfully disposed of a hazardous accident transport vehicle accident
Xinjiang Jinghe police successfully disposed of a hazardous accident transport vehicle accident
At15o'clockonthe29thofNovember,XinjiangJinghepolicesuccessfullydisposedatrafficaccidentinvolvinghazardouschemicalstransportvehiclesonthe312NationalRoad,andeliminatedamajorsafetyhazardintime.   Atabout15o'clockonthesameday,theaccidentsquadronofthetrafficpolicebrigadeofJingheCountyPublicSecurityBureaureceivedareportsayingthatadangerouschemicalstruckwastransportedalongthe312NationalRoadfromthewesttotheeasttotheJingheRiverattheoldrailwaystationofthe312NationalRoadinJingheCounty.NeartheroadsectionoftheBaotouSubstation,arolloveraccidentoccurredwhenthevehicleenteredtheintersection,andonepersonwasslightlyinjured.Thevehicleslammedtheliquefiedgastankatanytime.   Afterthetrafficpolicebrigaderushedtothescene,itquicklystartedthedangerouschemicalsvehicleaccidenthandlingplan,timelysentthepoliceinformationtothe110commandcenter,andnotifiedtherelevantdepartments. Thecarisfullof25tonsofpetroleumliquefiedgas,whichisaflammableandexplosivegas.Afterthepoliceandfireofficersinspectedtheliquefiedgastanksthatfellovertheground,theyfoundthattherewasnoleakageofliquefiedgas,buttherewasstillinstability,likeaUntimelybombsthreatenthelivesofcivilianpolice,fireofficersandotherrescuers.   Inordertoensuresafety,thepolicehandledthescene:First,evacuatetheonlookersimmediately,setuptwo-waytrafficcontrolwithinonekilometeroftheincidenttoensurethesafetyofthestaffintherescuearea;second,immediatelynotifytheunitofthevehicleinXinjiangLimingXinshunIndustryandTradeDangerousChemicalsTransportationCo.,Ltd.,letitsunitheadimmediatelyrushedtothescene;Third,theJingheCountyTrafficPolicePatrolGroupdispatchedalargenumberofpoliceforcestomaintaintrafficorderonthespot,preventsecondaryaccidents,andthenstarttheaccidentvehicleCarryoutarescue.   Afteron-siteinvestigation,investigationandevidencecollection,itwasfoundthatat15:20onNovember29,Gudroveanewheavy-dutysemi-trailertractorG63506(equippedwith25tonsofflammablehazardousmaterials)toDushanziCity.Whentheroadisfrozen,theroadturnsoverwhentheroadisturnedtothefork,causingonepersontobeinjuredandthevehicletobedamaged. After6hoursofrescue,finallyat21o'clockthatnight,thevehiclehazardouschemicalswereeffectivelydisposedof,theaccidentsitewascompletelyclearedandevacuated,andthe312NationalRoadresumednormalpassage.   Currently,thecaseisbeingprocessed.
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At15o'clockonthe29thofNovember,XinjiangJinghepolicesuccessfullydisposedatrafficaccidentinvolvinghazardouschemicalstransportvehiclesonthe312NationalRoad,andeliminatedamajorsafetyhazardintime.   Atabout15o'clockonthesameday,theaccidentsquadronofthetrafficpolicebrigadeofJingheCountyPublicSecurityBureaureceivedareportsayingthatadangerouschemicalstruckwastransportedalongthe312NationalRoadfromthewesttotheeasttotheJingheRiverattheoldrailwaystationofthe312NationalRoadinJingheCounty.NeartheroadsectionoftheBaotouSubstation,arolloveraccidentoccurredwhenthevehicleenteredtheintersection,andonepersonwasslightlyinjured.Thevehicleslammedtheliquefiedgastankatanytime.   Afterthetrafficpolicebrigaderushedtothescene,itquicklystartedthedangerouschemicalsvehicleaccidenthandlingplan,timelysentthepoliceinformationtothe110commandcenter,andnotifiedtherelevantdepartments. Thecarisfullof25tonsofpetroleumliquefiedgas,whichisaflammableandexplosivegas.Afterthepoliceandfireofficersinspectedtheliquefiedgastanksthatfellovertheground,theyfoundthattherewasnoleakageofliquefiedgas,buttherewasstillinstability,likeaUntimelybombsthreatenthelivesofcivilianpolice,fireofficersandotherrescuers.   Inordertoensuresafety,thepolicehandledthescene:First,evacuatetheonlookersimmediately,setuptwo-waytrafficcontrolwithinonekilometeroftheincidenttoensurethesafetyofthestaffintherescuearea;second,immediatelynotifytheunitofthevehicleinXinjiangLimingXinshunIndustryandTradeDangerousChemicalsTransportationCo.,Ltd.,letitsunitheadimmediatelyrushedtothescene;Third,theJingheCountyTrafficPolicePatrolGroupdispatchedalargenumberofpoliceforcestomaintaintrafficorderonthespot,preventsecondaryaccidents,andthenstarttheaccidentvehicleCarryoutarescue.   Afteron-siteinvestigation,investigationandevidencecollection,itwasfoundthatat15:20onNovember29,Gudroveanewheavy-dutysemi-trailertractorG63506(equippedwith25tonsofflammablehazardousmaterials)toDushanziCity.Whentheroadisfrozen,theroadturnsoverwhentheroadisturnedtothefork,causingonepersontobeinjuredandthevehicletobedamaged. After6hoursofrescue,finallyat21o'clockthatnight,thevehiclehazardouschemicalswereeffectivelydisposedof,theaccidentsitewascompletelyclearedandevacuated,andthe312NationalRoadresumednormalpassage.   Currently,thecaseisbeingprocessed.
Blasting Demolition Project of Chongwen District Cultural Center in Beijing
Blasting Demolition Project of Chongwen District Cultural Center in Beijing
Completiontime:November2001   Projectlocation:northwestcorneroftheintersectionofChongwenmenwaiStreetandZhushikouEastStreet,Beijing   Completionunit:ChinaUniversityofMiningandTechnologyBeijingZhongdaBlastingTechnologyEngineeringCompany   Projecthostandparticipants:LiuDianshu,WangShuren,ChenShoufeng,WangShunyu,GaoQuanchen,DuYulan,WangDaihua,WanLin,JiXiaopeng,LiShenglin   Writer:LiuDianshu    1ProjectOverview   TheproposedChongwenDistrictCulturalCenterinBeijingisareinforcedconcreteframestructurewithawidthof24mfromeasttowestandalengthof57.2mfromnorthtosouth.Thetotalconstructionareaisabout8,200m2.Themainpart(south)has12floorsabovegroundand1undergroundfloor.Theheightabovethegroundis45.2m.Controlledblastingdemolition;threelayersabovethenorthernground(includingthemezzanine),withaheightof13.9m,isintendedtobemechanicallyremovedafterblasting.   ThebuildingislocatedinChongwenDistrict,Beijing,borderingChongwenmenwaiStreetintheeastandZhushikouEastStreetinthesouth.Itisamainthoroughfare,withdensetrafficandpedestrians.ThesurroundingenvironmentisshowninFigure1. GuizhouRundeblasting   Itshouldbepointedoutthatthereisacablecorridorontheeastsideoftheculturalmuseumatadistanceof3.5mfromthebuilding,runningnorth-south.Therearemorethan20high-voltagecablesandcommunicationcablesof250,000-500,000V.Theremustbenodamageduringblasting;Municipalfacilitiessuchasbrickwallsandadvertisinglightboxesatthe3.Omlineneedtobeprotected.   2Controlledblastingscheme   Accordingtothestructuralcharacteristicsofthebuildingandtheenvironmentalconditions,itisanidealchoicetocontrolthesouthwarddumpingofthebuilding,butifthecollapsedirectionissouth,theundergroundcablewillbethreatenedduringthecollapseandaccumulationofthebuilding,andItisboundtopushdownthewallsanddamagetomunicipalfacilitiessuchaslightboxes. Throughtheanalysisandresearchonthecollapseandaccumulationofbuildings,thebuildingshouldbecontrolledtocollapseatleast15°westtothewesttoensurethesafetyofsurroundingmunicipalfacilities.   Sincethestructureissymmetrical,thedeflectionofthebuildingtothesouthwest15°directioncanonlybeachievedbythedetonationtimedifferencecontroltechnique,thatis,thebuildingstructureisdestroyedanddisintegratedintheairbycontrollingthedetonationtimedifferencebetweentherowsandthecolumns.Thetendencytoproduceasouth-westcollapse,forcingthebuildingtodeflectwestwardduringthecollapseofthesouth,istheoreticallyfeasible,andthereareplentyofexamplesofsuccessfulapplicationsinengineering. Therefore,theoverallschemeofcontrolledblastingisdeterminedasfollows:non-electricalcontroldetonationtechnologycombiningholeextensionandintra-holedelay,andfullyutilizingthecontroleffectofdetonationtimedifference,strictlycontrollingthedetonationsequenceofeachpart,andsequentiallyblowingupacertainheightrangeInsidethesupportingcolumn,ablastinggapisformedatthebottomofthebuilding,andthebuildingdisintegratesinapiecebypieceundertheactionofgravitybendingmoment,sothatthetorsiondeflectionofthebuildingisinclinedtocollapseinthedirectionof15°westtothewest. Basedonengineeringexperienceandstructuralanalysis,thedetonationtimedifferenceisdesignedtobe1.0to1.5s.   3blastingparameterdesign   3.1Blastingheight   Accordingtostructuralanalysisandoverturningmechanicscalculation,combinedwithsimilarblastingengineeringparameters,thedesignedblastingheightismainlyonetotwofloorsaboveground.Thecentercolumnisblastedtothethirdfloor,andthelastrowblastsonlyoneholeatthebottomofthefirstlayer,forminglooseness.Hinge,thefirstthreerowsofblastinginthebasementsection,thelastrowisretained,andtheblastingcutofthecentersectionisshowninFigure2. GuizhouRundeblasting   3.2blastholeparametersandsingleholedose   Intheblastingheightrange,theload-bearingcolumns(walls)areallclothed,andthecolumnswithsquaresectionsareinprinciplearrangedwithholesforeasydrillingandcharging,andthedirectionoftheholesmustbeavoided. TheporenetworkparametersofthemainstructureareshowninTable1.   Thesingleholevolumeoftheblastholeiscalculatedaccordingtothevolumeformula:Qi=kabl   WhereQi-singleporedose,kg;   a——blastholespacing,m;   b——Thelargersectionsizeorwallthicknessofthecolumnsection,m;   l——Thesmallersizeofthecolumnsectionorthewallholespacing,m;   k——explosiveunitconsumption,kg/m3.   TheamountofexplosiveslistedinTable1isthestandardamountofthegroundlayer.Thesecondtothirdfloorsarereducedby10%to15%,andthebasementportionisincreasedby20%.   3.3Detonationsequenceandblastingtimedifference   Inordertoensurethesafetyofthecabletrenchontheeastsideofthebuildingandthesurroundingbuildingfacilities,thebuildingtobedemolishedcollapsesinthesouth-westdirectionaccordingtothedesign.ThedetonationsequenceofthedesignisshowninFigure3.    Inordertoachieveasmoothdeflection,thefollowingtechnicalmeasureshavebeentakeninthedesignandengineeringimplementation:   (1)ThetwoholesatthebottomofthefirstrowoftheNo.4columninthesamerowaredesignedtobesimultaneouslydetonatedatthesametimeastheprevioussection.Thepurposeistoformarotatinghinge,whichisconducivetothetendencyoftheupperstructuretomovewestward;   (2)The2ndto3rdfloorsofthefourthrowofcolumns(
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Completiontime:November2001   Projectlocation:northwestcorneroftheintersectionofChongwenmenwaiStreetandZhushikouEastStreet,Beijing   Completionunit:ChinaUniversityofMiningandTechnologyBeijingZhongdaBlastingTechnologyEngineeringCompany   Projecthostandparticipants:LiuDianshu,WangShuren,ChenShoufeng,WangShunyu,GaoQuanchen,DuYulan,WangDaihua,WanLin,JiXiaopeng,LiShenglin   Writer:LiuDianshu    1ProjectOverview   TheproposedChongwenDistrictCulturalCenterinBeijingisareinforcedconcreteframestructurewithawidthof24mfromeasttowestandalengthof57.2mfromnorthtosouth.Thetotalconstructionareaisabout8,200m2.Themainpart(south)has12floorsabovegroundand1undergroundfloor.Theheightabovethegroundis45.2m.Controlledblastingdemolition;threelayersabovethenorthernground(includingthemezzanine),withaheightof13.9m,isintendedtobemechanicallyremovedafterblasting.   ThebuildingislocatedinChongwenDistrict,Beijing,borderingChongwenmenwaiStreetintheeastandZhushikouEastStreetinthesouth.Itisamainthoroughfare,withdensetrafficandpedestrians.ThesurroundingenvironmentisshowninFigure1. GuizhouRundeblasting   Itshouldbepointedoutthatthereisacablecorridorontheeastsideoftheculturalmuseumatadistanceof3.5mfromthebuilding,runningnorth-south.Therearemorethan20high-voltagecablesandcommunicationcablesof250,000-500,000V.Theremustbenodamageduringblasting;Municipalfacilitiessuchasbrickwallsandadvertisinglightboxesatthe3.Omlineneedtobeprotected.   2Controlledblastingscheme   Accordingtothestructuralcharacteristicsofthebuildingandtheenvironmentalconditions,itisanidealchoicetocontrolthesouthwarddumpingofthebuilding,butifthecollapsedirectionissouth,theundergroundcablewillbethreatenedduringthecollapseandaccumulationofthebuilding,andItisboundtopushdownthewallsanddamagetomunicipalfacilitiessuchaslightboxes. Throughtheanalysisandresearchonthecollapseandaccumulationofbuildings,thebuildingshouldbecontrolledtocollapseatleast15°westtothewesttoensurethesafetyofsurroundingmunicipalfacilities.   Sincethestructureissymmetrical,thedeflectionofthebuildingtothesouthwest15°directioncanonlybeachievedbythedetonationtimedifferencecontroltechnique,thatis,thebuildingstructureisdestroyedanddisintegratedintheairbycontrollingthedetonationtimedifferencebetweentherowsandthecolumns.Thetendencytoproduceasouth-westcollapse,forcingthebuildingtodeflectwestwardduringthecollapseofthesouth,istheoreticallyfeasible,andthereareplentyofexamplesofsuccessfulapplicationsinengineering. Therefore,theoverallschemeofcontrolledblastingisdeterminedasfollows:non-electricalcontroldetonationtechnologycombiningholeextensionandintra-holedelay,andfullyutilizingthecontroleffectofdetonationtimedifference,strictlycontrollingthedetonationsequenceofeachpart,andsequentiallyblowingupacertainheightrangeInsidethesupportingcolumn,ablastinggapisformedatthebottomofthebuilding,andthebuildingdisintegratesinapiecebypieceundertheactionofgravitybendingmoment,sothatthetorsiondeflectionofthebuildingisinclinedtocollapseinthedirectionof15°westtothewest. Basedonengineeringexperienceandstructuralanalysis,thedetonationtimedifferenceisdesignedtobe1.0to1.5s.   3blastingparameterdesign   3.1Blastingheight   Accordingtostructuralanalysisandoverturningmechanicscalculation,combinedwithsimilarblastingengineeringparameters,thedesignedblastingheightismainlyonetotwofloorsaboveground.Thecentercolumnisblastedtothethirdfloor,andthelastrowblastsonlyoneholeatthebottomofthefirstlayer,forminglooseness.Hinge,thefirstthreerowsofblastinginthebasementsection,thelastrowisretained,andtheblastingcutofthecentersectionisshowninFigure2. GuizhouRundeblasting   3.2blastholeparametersandsingleholedose   Intheblastingheightrange,theload-bearingcolumns(walls)areallclothed,andthecolumnswithsquaresectionsareinprinciplearrangedwithholesforeasydrillingandcharging,andthedirectionoftheholesmustbeavoided. TheporenetworkparametersofthemainstructureareshowninTable1.   Thesingleholevolumeoftheblastholeiscalculatedaccordingtothevolumeformula:Qi=kabl   WhereQi-singleporedose,kg;   a——blastholespacing,m;   b——Thelargersectionsizeorwallthicknessofthecolumnsection,m;   l——Thesmallersizeofthecolumnsectionorthewallholespacing,m;   k——explosiveunitconsumption,kg/m3.   TheamountofexplosiveslistedinTable1isthestandardamountofthegroundlayer.Thesecondtothirdfloorsarereducedby10%to15%,andthebasementportionisincreasedby20%.   3.3Detonationsequenceandblastingtimedifference   Inordertoensurethesafetyofthecabletrenchontheeastsideofthebuildingandthesurroundingbuildingfacilities,thebuildingtobedemolishedcollapsesinthesouth-westdirectionaccordingtothedesign.ThedetonationsequenceofthedesignisshowninFigure3.    Inordertoachieveasmoothdeflection,thefollowingtechnicalmeasureshavebeentakeninthedesignandengineeringimplementation:   (1)ThetwoholesatthebottomofthefirstrowoftheNo.4columninthesamerowaredesignedtobesimultaneouslydetonatedatthesametimeastheprevioussection.Thepurposeistoformarotatinghinge,whichisconducivetothetendencyoftheupperstructuretomovewestward;   (2)The2ndto3rdfloorsofthefourthrowofcolumns(
Demolition of Cooling Tower of Datang Taiyuan Second Thermal Power Plant
Demolition of Cooling Tower of Datang Taiyuan Second Thermal Power Plant
Completiontime:2004-2005   ProjectLocation:Taiyuan,Shanxi   Completionunit:ChinaRailwayThirdBureauGroupCorporation   Projecthostandparticipants:ZiLigang,LiuHonggang,ZhangJunbing,XuJianzhong   Writer:BaiLigang     1ProjectOverview   TheDatangTaiyuanNo.2ThermalPowerPlantwasbuiltin1958.TheNo.1toNo.4generatingunitshaveexceededtheservicelife.Theownersdecidedtorenovatetheoverdueserviceunitsandsomeequipmentandbuildings.TheNo.1,No.2,No.3coolingisrequired.tower. Becausethecoolingtoweristallandthin-walledreinforcedconcretestructure,itcannotbemanuallyremoved,soitisdecidedtousedirectionalcontrolblastingtechnologyfordemolitionconstruction.   Amongthem,thecoolingtowerNo.3isareinforcedconcretestructure,andthestructureofthehyperboliccylinderisshowninFig.1. Thetowerhasaheightof70.15m,abottomradiusof29.57m,anupperradiusof14.7m,abottomwallthicknessofδ=400mm,andatopwallthicknessofδ=100mm. Thetowerbodyislocatedon40pairsofherringbonepillarreinforcedconcretetrusses,andthepillarsectionisa40mm×40mmrectangularstructure. Thetotalamountofreinforcedconcreteinthecoolingtoweris1085.2m3andthetotalweightis2658t.ItisthehighestheightandlargestdiametercoolingtowercurrentlyremovedbyblastingmethodsinChina. DemolitionofCoolingTowerofDatangTaiyuanSecondThermalPowerPlant   Somebuildingsaroundthecoolingtowerneedtoberemoved. However,theclosestdistanceofCoolingTowerNo.3tothenewly-builtofficebuildingofthekeyprotectionbuildingis24.067m,28.962mfromthebrickhouseand35.866mfromtheswimmingpool(seeFigure2). DemolitionofCoolingTowerofDatangTaiyuanSecondThermalPowerPlant   2blastingplanselection   2.1Engineeringcharacteristicsanddesignrequirements   (1)Thesurroundingenvironmentiscomplexandthedirectionofcollapsemustbestrictlycontrolled.   (2)Thebottomofthecoolingtowerhasalargediameterandasmallheightratio(1.18).Whenblasting,itshouldpreventthephenomenonofsittingwithoutfalling,fallingwithoutbreakingandexplodingtoohigh.   (3)Thecoolingtowerisathin-walledstructurewithalargenumberofholes,itisdifficulttofillthecharge,anditiseasytoproduceflyingstones.Itisnecessarytostrengthentheprotection.   (4)Thedetonationnetworkiscomplex,anditisadvisabletouseanon-electricmilliseconddelaydetonationtechnologyoramulti-channelfour-wayrelaynetwork.   (5)Controltheamountofsingle-shotdrugstoensurethattheblastingvibrationdoesnotcauseanyharmtotheofficebuilding,andattentionshouldbepaidtotheimpactofthefloor-standingvibrationofthetowerbody.   2.2Blastingdemolitionplan   Theblastingiscontrolledby“openingthewindow,breakingthesteelbar,andretainingthesupportingplate”,thenusingthehydraulicbreakertobreak,theexcavator(orloader)tobeshipped,andthecartotheslagplantformechanizedconstruction.   2.3Determinationofcollapsedirection   Sincethecoolingtowerstructureissymmetricallyarrangedalongtheperiphery,thestructureitselfhasnoinfluenceonthecollapsedirection,andthecollapsedirectionismainlydeterminedaccordingtothesurroundingenvironmentalconditions. SincetherightsideoftheNo.3coolingtowerisanofficebuilding,abrickhouseandapool,bothareprotectedbuildings,andthecoolingtowerisdesignedtocollapseinthedirectionofthenorth.   3Determinationofblastingparameters   3.1Designofblastinggap   3.1.1Notchdesignprinciples   Thesize,heightandpositionoftheblastingholeareimportantconditionsforthecoolingtowertocollapsesmoothlyaccordingtothedesigndirection.Therefore,itshouldbedesignedaccordingtothefollowingprinciples:   (1)Thesizeofthegapshouldmeettherequirementsofthetowerbodytocollapseundertheactionofgravityaftertheblasting.   (2)Thegapmustensurethatthecoolingtowerbodyisfullygroundafterblasting,thatis,collapsedratherthancollapsed.   (3)Thesmallamountofthegapitselfcanbecreated,andgoodprotectionconditionscanbecreated.Afterthetowerbodyisgrounded,thecrushingeffectisgood,andthetowerbodyhasalowstackingheighttofacilitatethecleaningoftheslag.   3.1.2gapsizeselection   (1)Gapform:adopta"trapezoid"gap;   (2)Notchheight(H):equaltotheheightoftheherringbonepillar(h1),theheightofthepillarring(h2),andtheheightofthetowergap(h3),thetotalheightisabout8m;H=h1+h2+h3,seethefigure3. DemolitionofCoolingTowerofDatangTaiyuanSecondThermalPowerPlant (Note:theshadedpartinthefigureisthepre-removedpart,whichisgenerallypre-dismantledwithabreaker; Eachreservedsupportblockisnotlessthan3.0m. ;thepillarringonlycutsthreegaps)   (3)Notchlength:accordingtothedifferentcomponentsofthenotch,takedifferentlengths,whereinthelengthoftheherringbonepillarisL1=1/2S,thelengthofthepillarringisL2=220/360s,andthelengthofthetowerbodyisL3=230/360s.MediumSistheperimeterofthetower.   3.2Blastingparameters   TheblastingparametersareshowninTable1. DemolitionofCoolingTowerofDatangTaiyuanSecondThermalPowerPlant   Note:Theparametersinthetablevarywiththewallthicknessofthetower.   4detonatingnetwork   Becausethecoolingtowerhaslargeblastingsurfaceandmanyholes,itisthekeytothesuccessofblasting.Itisthekeytothesuccessorfailureoftheblasting.Iftheelectricblastingnetworkisused,thenumberoftheblastingnetworkistoolarge.Theblastdecisionwasmadeusingamulti-channelfour-waynetwork. Eachcolumnpillarringgapisusedas
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Completiontime:2004-2005   ProjectLocation:Taiyuan,Shanxi   Completionunit:ChinaRailwayThirdBureauGroupCorporation   Projecthostandparticipants:ZiLigang,LiuHonggang,ZhangJunbing,XuJianzhong   Writer:BaiLigang     1ProjectOverview   TheDatangTaiyuanNo.2ThermalPowerPlantwasbuiltin1958.TheNo.1toNo.4generatingunitshaveexceededtheservicelife.Theownersdecidedtorenovatetheoverdueserviceunitsandsomeequipmentandbuildings.TheNo.1,No.2,No.3coolingisrequired.tower. Becausethecoolingtoweristallandthin-walledreinforcedconcretestructure,itcannotbemanuallyremoved,soitisdecidedtousedirectionalcontrolblastingtechnologyfordemolitionconstruction.   Amongthem,thecoolingtowerNo.3isareinforcedconcretestructure,andthestructureofthehyperboliccylinderisshowninFig.1. Thetowerhasaheightof70.15m,abottomradiusof29.57m,anupperradiusof14.7m,abottomwallthicknessofδ=400mm,andatopwallthicknessofδ=100mm. Thetowerbodyislocatedon40pairsofherringbonepillarreinforcedconcretetrusses,andthepillarsectionisa40mm×40mmrectangularstructure. Thetotalamountofreinforcedconcreteinthecoolingtoweris1085.2m3andthetotalweightis2658t.ItisthehighestheightandlargestdiametercoolingtowercurrentlyremovedbyblastingmethodsinChina. DemolitionofCoolingTowerofDatangTaiyuanSecondThermalPowerPlant   Somebuildingsaroundthecoolingtowerneedtoberemoved. However,theclosestdistanceofCoolingTowerNo.3tothenewly-builtofficebuildingofthekeyprotectionbuildingis24.067m,28.962mfromthebrickhouseand35.866mfromtheswimmingpool(seeFigure2). DemolitionofCoolingTowerofDatangTaiyuanSecondThermalPowerPlant   2blastingplanselection   2.1Engineeringcharacteristicsanddesignrequirements   (1)Thesurroundingenvironmentiscomplexandthedirectionofcollapsemustbestrictlycontrolled.   (2)Thebottomofthecoolingtowerhasalargediameterandasmallheightratio(1.18).Whenblasting,itshouldpreventthephenomenonofsittingwithoutfalling,fallingwithoutbreakingandexplodingtoohigh.   (3)Thecoolingtowerisathin-walledstructurewithalargenumberofholes,itisdifficulttofillthecharge,anditiseasytoproduceflyingstones.Itisnecessarytostrengthentheprotection.   (4)Thedetonationnetworkiscomplex,anditisadvisabletouseanon-electricmilliseconddelaydetonationtechnologyoramulti-channelfour-wayrelaynetwork.   (5)Controltheamountofsingle-shotdrugstoensurethattheblastingvibrationdoesnotcauseanyharmtotheofficebuilding,andattentionshouldbepaidtotheimpactofthefloor-standingvibrationofthetowerbody.   2.2Blastingdemolitionplan   Theblastingiscontrolledby“openingthewindow,breakingthesteelbar,andretainingthesupportingplate”,thenusingthehydraulicbreakertobreak,theexcavator(orloader)tobeshipped,andthecartotheslagplantformechanizedconstruction.   2.3Determinationofcollapsedirection   Sincethecoolingtowerstructureissymmetricallyarrangedalongtheperiphery,thestructureitselfhasnoinfluenceonthecollapsedirection,andthecollapsedirectionismainlydeterminedaccordingtothesurroundingenvironmentalconditions. SincetherightsideoftheNo.3coolingtowerisanofficebuilding,abrickhouseandapool,bothareprotectedbuildings,andthecoolingtowerisdesignedtocollapseinthedirectionofthenorth.   3Determinationofblastingparameters   3.1Designofblastinggap   3.1.1Notchdesignprinciples   Thesize,heightandpositionoftheblastingholeareimportantconditionsforthecoolingtowertocollapsesmoothlyaccordingtothedesigndirection.Therefore,itshouldbedesignedaccordingtothefollowingprinciples:   (1)Thesizeofthegapshouldmeettherequirementsofthetowerbodytocollapseundertheactionofgravityaftertheblasting.   (2)Thegapmustensurethatthecoolingtowerbodyisfullygroundafterblasting,thatis,collapsedratherthancollapsed.   (3)Thesmallamountofthegapitselfcanbecreated,andgoodprotectionconditionscanbecreated.Afterthetowerbodyisgrounded,thecrushingeffectisgood,andthetowerbodyhasalowstackingheighttofacilitatethecleaningoftheslag.   3.1.2gapsizeselection   (1)Gapform:adopta"trapezoid"gap;   (2)Notchheight(H):equaltotheheightoftheherringbonepillar(h1),theheightofthepillarring(h2),andtheheightofthetowergap(h3),thetotalheightisabout8m;H=h1+h2+h3,seethefigure3. DemolitionofCoolingTowerofDatangTaiyuanSecondThermalPowerPlant (Note:theshadedpartinthefigureisthepre-removedpart,whichisgenerallypre-dismantledwithabreaker; Eachreservedsupportblockisnotlessthan3.0m. ;thepillarringonlycutsthreegaps)   (3)Notchlength:accordingtothedifferentcomponentsofthenotch,takedifferentlengths,whereinthelengthoftheherringbonepillarisL1=1/2S,thelengthofthepillarringisL2=220/360s,andthelengthofthetowerbodyisL3=230/360s.MediumSistheperimeterofthetower.   3.2Blastingparameters   TheblastingparametersareshowninTable1. DemolitionofCoolingTowerofDatangTaiyuanSecondThermalPowerPlant   Note:Theparametersinthetablevarywiththewallthicknessofthetower.   4detonatingnetwork   Becausethecoolingtowerhaslargeblastingsurfaceandmanyholes,itisthekeytothesuccessofblasting.Itisthekeytothesuccessorfailureoftheblasting.Iftheelectricblastingnetworkisused,thenumberoftheblastingnetworkistoolarge.Theblastdecisionwasmadeusingamulti-channelfour-waynetwork. Eachcolumnpillarringgapisusedas
Large-scale blasting of cluster holes under complex conditions of underground mines
Large-scale blasting of cluster holes under complex conditions of underground mines
Completiontime:March2005   ProjectLocation:NantongDantongkengMine   Completionunit:BeijingMiningandMetallurgicalResearchInstitute,HuaxiGroupTongkengMine   Projecthostandparticipants:SunZhongming,ZhangYoubao,LiShiqing,ChenHe,SuJiahong,YaoGenhua,YuZiqing,LiuJiandong,PanJiaxu,WuGuicai,LuoXianwei,YuBin,YuYangxian,WeiFangjing,YangWeizhong,CaiHanqian,WangHuxin,DongWeijun,ZengLunsheng,MoRongshi,XiaHailiang,WenYanyu,LiuMenghong,YuanXiangquan,XieYuan,WeiKeli,WuZengqiang   ContributedbySunZhongming     In2002,theGuangxiAcademicianBankorganizedbytheChineseAcademyofEngineeringandtheNationalDevelopmentandReformCommissionheldaspecialdiscussionontheissueofthehiddendangersoftheTongkengMine.ItclearlypointedouttheurgencyandpossibletreatmentofthehiddendangersoftheTongkengMine.Technicalapproach. Basedonthis,theBeijingResearchInstituteofMiningandMetallurgyandHuaxiGroupcooperatedonMarch28,2005toconductalarge-scaleundergroundblastingwithachargeof150tattheDantongkengMineinsouthwestGuangxi. Thislargeblastingisakeyprojectforthenationalkeysafetyhazardremediationproject,thehiddendangermanagementofTongkengMine,andtheundergroundblastingofthelargestblastingvolumeinChina.   HuaxiGroupCopperPitMineisalargeundergroundminewithamininghistoryofmorethan30years. Thethreemajororebodiesminedarethefineveinbelts,theNo.91andNo.92orebodiesfromtoptobottom,andthethreeorebodiesarepartiallyoverlappedintheverticaldirection. Theearliestminedfineveinbeltorebodyspontaneouslyignitedsince1976,formingafirezonethatcannotbecured,causingdisorderofthesubsequentminingsequence,leavingaconsiderablenumberofirregularlydistributedemptyareas. Withthedevelopmentofmineproductionandconstruction,themainminingareaof​​theminehasgraduallyshiftedtothelowerNo.92orebody,formingagroupofupperandloweremptyareas,anditismoredifficulttocontrolthegroundpressureofthemine. Since1998,localcollapseofthestopeandmovementoftherockformationoccurred,andthenlocalizedcollapsebegantooccur.Atthesametime,thefirebarriercolumnleftinordertoensurethesafetyofthelowerminingareahasbeeninanincompletestate,controllingthespreadofthefirezoneandpreventingit.Thedifficultyofgroundpressuredisastersisgettingbiggerandbigger,andtheremaining3.6milliontonsoforeintheveinsoftheveinscannotberecovered. Theminingoperationsofthelower92orebodyaredirectlythreatened. In1997,itwaslistedasahiddendangerareaformajoraccidentsinGuangxi.In2002,itwaslistedasanationalkeysafetyhazardremediationproject.   Inordertocurethehiddendangersandpressuredisastersinthefireareaandrecovertheoreresources,HuaxiGroupadherestotheprincipleof“preventionfirstandsafetyfirst”,intheStateAdministrationofWorkSafetyandtheSafetyProductionSupervisionAdministrationofGuangxiZhuangAutonomousRegion.Undertheguidance,wewillactivelycarryoutthemanagementofthehiddendangerzoneofthefineveins. TheBeijingResearchInstituteofMiningandMetallurgyisalarge-scalenationalcomprehensiveresearchinstitute.Ithascarriedoutlong-termsystematicworkinthedevelopmentandresearchofminingengineeringtechnology,andmanyresearchresultshavereachedtheinternationaladvancedlevel. Inparticular,ithasrichengineeringpracticeexperienceandinnovativetechnologyinhigh-efficiencyminingtechnologyandlarge-scaleblastingtechnology. InOctober2003,HuaxiGroupandtheBeijingResearchInstituteofMiningandMetallurgyjointlycooperatedtostartascientificandtechnologicalresearchprojectforthespecifictreatmentofcopperpitminesandrelatedtechnologies. Since2003,theBeijingResearchInstituteofMiningandMetallurgyhascooperatedwiththeHuaxiGroupTongkengMine.Aftermanyinvestigations,analysisandargumentation,ithasdecidedtoadoptapartialfilling,forcedcollapse,strongminingandstrongout,closedcoveragecomprehensivetreatmentplan,andscopeoftreatment.Itisdividedintothreeexplosionzonesandblastingiscarriedoutinstages.   Thefirstexplosionzoneislocatedatthelevelof570mto650minthefineveinzone,includingthelarge14thand12thstopesandtheircorrespondingupperfirebarriers. Duetoalargenumberofirregularvacancies,ballastdamageandadjacentfirezonesandotherfactorscausedbyquitecomplexblastingconditionsandenvironment,forthedifferentpillarconditions,thefirstblastzoneadoptsdifferentstagesofphasebundlessuchaslinear,circularandsquare.Thedensedeepholeismainlycomposed,andtheblastingschemeofthelocalmedium-deepholeandsmalldiverticulumissupplementedtorealizetheoverallcollapseoftherockarea.   Theblastingresistancelineofthebundleholeis5to14m. Thebeamholeblastingtechnologyhasthefeasibilityandapplicabilityunderspecialprocessconditions. Technicallyreliable,highefficiencyandhighstrength. Thelargeblastingdesignestablishestheblastingvibrationattenuationmodelandthedownholeshockwavepropagationattenuationmodeltoaccuratelypredicttheharmfuleffectsofblasting. Thepre-crackingvibrationreduction,flexiblewaveblockingwall,real-timemonitoringandothertechnicalmeansareusedtoeffectivelycontroltheharmfuleffectsofblasting.   Theblastingrockchamberislocatedintheoriginalminingapproachoronbothsides,4mhigh. Thebeamholehasadepthof30to62mandisverticallyparalleltothehole. Thenumberofbundleholesis3to9. Holenetparameters:beamsp
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Completiontime:March2005   ProjectLocation:NantongDantongkengMine   Completionunit:BeijingMiningandMetallurgicalResearchInstitute,HuaxiGroupTongkengMine   Projecthostandparticipants:SunZhongming,ZhangYoubao,LiShiqing,ChenHe,SuJiahong,YaoGenhua,YuZiqing,LiuJiandong,PanJiaxu,WuGuicai,LuoXianwei,YuBin,YuYangxian,WeiFangjing,YangWeizhong,CaiHanqian,WangHuxin,DongWeijun,ZengLunsheng,MoRongshi,XiaHailiang,WenYanyu,LiuMenghong,YuanXiangquan,XieYuan,WeiKeli,WuZengqiang   ContributedbySunZhongming     In2002,theGuangxiAcademicianBankorganizedbytheChineseAcademyofEngineeringandtheNationalDevelopmentandReformCommissionheldaspecialdiscussionontheissueofthehiddendangersoftheTongkengMine.ItclearlypointedouttheurgencyandpossibletreatmentofthehiddendangersoftheTongkengMine.Technicalapproach. Basedonthis,theBeijingResearchInstituteofMiningandMetallurgyandHuaxiGroupcooperatedonMarch28,2005toconductalarge-scaleundergroundblastingwithachargeof150tattheDantongkengMineinsouthwestGuangxi. Thislargeblastingisakeyprojectforthenationalkeysafetyhazardremediationproject,thehiddendangermanagementofTongkengMine,andtheundergroundblastingofthelargestblastingvolumeinChina.   HuaxiGroupCopperPitMineisalargeundergroundminewithamininghistoryofmorethan30years. Thethreemajororebodiesminedarethefineveinbelts,theNo.91andNo.92orebodiesfromtoptobottom,andthethreeorebodiesarepartiallyoverlappedintheverticaldirection. Theearliestminedfineveinbeltorebodyspontaneouslyignitedsince1976,formingafirezonethatcannotbecured,causingdisorderofthesubsequentminingsequence,leavingaconsiderablenumberofirregularlydistributedemptyareas. Withthedevelopmentofmineproductionandconstruction,themainminingareaof​​theminehasgraduallyshiftedtothelowerNo.92orebody,formingagroupofupperandloweremptyareas,anditismoredifficulttocontrolthegroundpressureofthemine. Since1998,localcollapseofthestopeandmovementoftherockformationoccurred,andthenlocalizedcollapsebegantooccur.Atthesametime,thefirebarriercolumnleftinordertoensurethesafetyofthelowerminingareahasbeeninanincompletestate,controllingthespreadofthefirezoneandpreventingit.Thedifficultyofgroundpressuredisastersisgettingbiggerandbigger,andtheremaining3.6milliontonsoforeintheveinsoftheveinscannotberecovered. Theminingoperationsofthelower92orebodyaredirectlythreatened. In1997,itwaslistedasahiddendangerareaformajoraccidentsinGuangxi.In2002,itwaslistedasanationalkeysafetyhazardremediationproject.   Inordertocurethehiddendangersandpressuredisastersinthefireareaandrecovertheoreresources,HuaxiGroupadherestotheprincipleof“preventionfirstandsafetyfirst”,intheStateAdministrationofWorkSafetyandtheSafetyProductionSupervisionAdministrationofGuangxiZhuangAutonomousRegion.Undertheguidance,wewillactivelycarryoutthemanagementofthehiddendangerzoneofthefineveins. TheBeijingResearchInstituteofMiningandMetallurgyisalarge-scalenationalcomprehensiveresearchinstitute.Ithascarriedoutlong-termsystematicworkinthedevelopmentandresearchofminingengineeringtechnology,andmanyresearchresultshavereachedtheinternationaladvancedlevel. Inparticular,ithasrichengineeringpracticeexperienceandinnovativetechnologyinhigh-efficiencyminingtechnologyandlarge-scaleblastingtechnology. InOctober2003,HuaxiGroupandtheBeijingResearchInstituteofMiningandMetallurgyjointlycooperatedtostartascientificandtechnologicalresearchprojectforthespecifictreatmentofcopperpitminesandrelatedtechnologies. Since2003,theBeijingResearchInstituteofMiningandMetallurgyhascooperatedwiththeHuaxiGroupTongkengMine.Aftermanyinvestigations,analysisandargumentation,ithasdecidedtoadoptapartialfilling,forcedcollapse,strongminingandstrongout,closedcoveragecomprehensivetreatmentplan,andscopeoftreatment.Itisdividedintothreeexplosionzonesandblastingiscarriedoutinstages.   Thefirstexplosionzoneislocatedatthelevelof570mto650minthefineveinzone,includingthelarge14thand12thstopesandtheircorrespondingupperfirebarriers. Duetoalargenumberofirregularvacancies,ballastdamageandadjacentfirezonesandotherfactorscausedbyquitecomplexblastingconditionsandenvironment,forthedifferentpillarconditions,thefirstblastzoneadoptsdifferentstagesofphasebundlessuchaslinear,circularandsquare.Thedensedeepholeismainlycomposed,andtheblastingschemeofthelocalmedium-deepholeandsmalldiverticulumissupplementedtorealizetheoverallcollapseoftherockarea.   Theblastingresistancelineofthebundleholeis5to14m. Thebeamholeblastingtechnologyhasthefeasibilityandapplicabilityunderspecialprocessconditions. Technicallyreliable,highefficiencyandhighstrength. Thelargeblastingdesignestablishestheblastingvibrationattenuationmodelandthedownholeshockwavepropagationattenuationmodeltoaccuratelypredicttheharmfuleffectsofblasting. Thepre-crackingvibrationreduction,flexiblewaveblockingwall,real-timemonitoringandothertechnicalmeansareusedtoeffectivelycontroltheharmfuleffectsofblasting.   Theblastingrockchamberislocatedintheoriginalminingapproachoronbothsides,4mhigh. Thebeamholehasadepthof30to62mandisverticallyparalleltothehole. Thenumberofbundleholesis3to9. Holenetparameters:beamsp
Chamber blasting of limestone orphans
Chamber blasting of limestone orphans
Time of issue : 2019-04-19 17:44:00
Completiontime:April2004   ProjectLocation:MaweiTownship,DebaoCounty,Guangxi   Completedunit:GuangxiGeologyConstructionEngineeringDevelopmentCenter   Projecthostandparticipants:ZhaoMingte,TanZhimin,QiJingyin,WangHong   ContributedbyZhaoMingte    1ProjectOverview   1.1Engineeringandgeologicaloverview   InordertodeveloptheGuangxiBauxiteMine,GuangxiHuayinAluminumCo.,Ltd.decidedtobuildanaluminaplantinMajiTownship,DebaoCounty,Guangxi.Accordingtotheoverallarrangementoftheprojectconstruction,theownerrequestedwithinonemonth(ieMarch18to4,2004).Onthe18thofthemonth,theblastingtaskofeightlimestoneorphanchambersintheplantareawascompleted.   1.2Topographyandgeologyinthedetonationarea   Thefourlimestonemountainsinthealuminumplantsitearetoweringandsteeplonepeaks.Theslopeanglesoftheslopesareallgreaterthan45°.Mostofthesurfaceofthemountainisexposedlimestone,withscatteredlocalvegetationandlithologyfromthicktothickthicklimestone.Thelithologyisrelativelyhard,f=7~lO,therockstratumis165/NE,therocklayerdipis27°,thesurfaceoftherockmassisweaklyweathered,thejointfissuresaredeveloped,andthesolitarypeaksarealldevelopedwithcaves,theirsizesaredifferent,andtheshapeisirregular.Mostofthemdevelopinthemiddleandlowerpartsofthemountain,andthereisnowaterinthehole. Therearetwogroupsoffault-fracturezonesneartheeast-westdirection,withawidthofl~3m.Thefracturedzoneofthefaultfracturezoneextendsfromthetoptothefootofthemountain. Thefaultzoneisakeratinousweaksilicifiedrock.   No.2is430mlong,220mwideand63.1mhigh,withablastingcapacityof380,000m3;No.3isolatedpeakis240mlong,200mwide,72.92mhigh,withablastingcapacityof250,000m3;No.4isolatedpeakis280mlongandwide120m,height52m,blastingquantity90,000m3;No.8solitarypeaklength260m,width110m,height45.2m,blastingquantity110,000m3.4solitarypeaksrequireblastingfloorelevation690m,totalblastingcapacityis83Millionm3.   1.3Thesurroundingenvironmentoftheexplosionarea   Theblastzoneisatypicalkarstlandform,whichisarelativelyflatdepression.Itissurroundedbyundulatingpeakclusters.Fourorphanpeaksarelocatedinthecenterofthevalley.Theyaredistributedinashapeofafigure,amongwhicharethe3rd,4thand2ndpeaks.Thedistanceis60-80m,the8thisolatedpeakisfarapart,andthedistancebetweenthe4thpeakis500m. Therearevillagesaroundthefourisolatedpeaks.Thenearestdistancetothevillageis80m(multipleobjects),andtherestareabove200-250m.Inadditiontotheresidentialareas,therearehigh-voltagelinesandcommunicationstations.(structure)andfacilities,thedistancefromtheexplosionzoneisabout400~500m(asshowninFigure1).    1.4Technicalrequirementsforblastingdesign   GuangxiHuayinAluminumCo.,Ltd.putsforwardthefollowingrequirementsforthedesignofchamberblastingtechnology:   (1)Blastingelevation:allbrokenabove690melevation.   (2)Therockmassafterblastingislessthan300mm,accountingfor60%;300-600mmormore,30%;600mmormore,accountingfor10%.   (3)Projectduration:March18toApril18,atotalof30days.   (4)Noharmtothehousesandotherfacilitiesaroundtheexplosionarea.   2blastingdesign   2.1Blastingplan   Thepurposeofthisblastingistoflatten4orphanpeaks,andtheblastingfragmentshavegradingrequirements.Theenergydistributionofthestrip-shapeddrugroomisuniform,andtheblockandgradingcontrolisbetter.Atthesametime,thelowerpartofthefourisolatedpeaksareconsidered.Thethicklayerandthethicklayeroflimestone,withthemiddlelayeroflimestoneinterposedtherebetween,sotheconcentratedchamberblastingisusedinthethicklayersection,andtheblastingschemecombiningthestripmedicinechamberandtheconcentratedmedicinechamberisgenerallyadopted. Inordertoeffectivelyprotectthebuilding(structure)aroundtheexplosionarea,thedrugroomisarrangedinlayers,theupperdrugroomisdesignedtostrengthenthelooseblasting,thelowerdrugroomislooseblasting,andtheminimumresistancelineiscontrolledwithin20m. Thedetonatingtubeisusedtodetonatethenetwork. Theblastingschemesofthefoursolitarypeaksareasfollows:   (1)No.2orphanpeakiselliptical,withlittlechangeintopography.Themiddleandupperpartsaremedium-thicklayeredlimestone,andthelowerpartisthicktothickthicklayeredlimestone.Twolayersofdrugroomarearranged,andtheupperlayerisstrip-shapedmedicine.Theroomisreinforcedbylooseblasting,andthelowerlayerislooseblastingofconcentrateddrugroom.   (2)TheNo.3orphanpeakisanearlyverticalcylindricalpeak,andthelithologyisamediumthicklayeredlimestone.Threelayersofdrugchambersarearranged.Theuppertwolayersofthedrugchamberarestrip-shapeddrugchambers,whicharecollapsedandblasted.Concentrateddrugroomlooseningblasting.   (3)The4thpeakissimilartothetiger-likeshape.Thefirst(southend)isamedium-thicklayeredlimestone,thelowerpartandthenorthpartarethickandthickthicklayeredlimestone,thesouthissetupwithtwolayersofmedicinerooms,andthenorthissetwithalayerofmedicine.Room,usingconcentrateddrugroomlooseblasting.   (4)No.8orphanpeakissimilartodiamondshape,lithologyismediumthicklayeredlimestone,80monthenorthwestsideofthemountainismulti-objective,mostofthehousesaremudbrickstructure,twolayersofdrugroomarearranged,andthestrip-shapeddrugroomisloosened.blasting.   2.2Designprinciples   Thechamberblastingperiodistight,thes
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Completiontime:April2004   ProjectLocation:MaweiTownship,DebaoCounty,Guangxi   Completedunit:GuangxiGeologyConstructionEngineeringDevelopmentCenter   Projecthostandparticipants:ZhaoMingte,TanZhimin,QiJingyin,WangHong   ContributedbyZhaoMingte    1ProjectOverview   1.1Engineeringandgeologicaloverview   InordertodeveloptheGuangxiBauxiteMine,GuangxiHuayinAluminumCo.,Ltd.decidedtobuildanaluminaplantinMajiTownship,DebaoCounty,Guangxi.Accordingtotheoverallarrangementoftheprojectconstruction,theownerrequestedwithinonemonth(ieMarch18to4,2004).Onthe18thofthemonth,theblastingtaskofeightlimestoneorphanchambersintheplantareawascompleted.   1.2Topographyandgeologyinthedetonationarea   Thefourlimestonemountainsinthealuminumplantsitearetoweringandsteeplonepeaks.Theslopeanglesoftheslopesareallgreaterthan45°.Mostofthesurfaceofthemountainisexposedlimestone,withscatteredlocalvegetationandlithologyfromthicktothickthicklimestone.Thelithologyisrelativelyhard,f=7~lO,therockstratumis165/NE,therocklayerdipis27°,thesurfaceoftherockmassisweaklyweathered,thejointfissuresaredeveloped,andthesolitarypeaksarealldevelopedwithcaves,theirsizesaredifferent,andtheshapeisirregular.Mostofthemdevelopinthemiddleandlowerpartsofthemountain,andthereisnowaterinthehole. Therearetwogroupsoffault-fracturezonesneartheeast-westdirection,withawidthofl~3m.Thefracturedzoneofthefaultfracturezoneextendsfromthetoptothefootofthemountain. Thefaultzoneisakeratinousweaksilicifiedrock.   No.2is430mlong,220mwideand63.1mhigh,withablastingcapacityof380,000m3;No.3isolatedpeakis240mlong,200mwide,72.92mhigh,withablastingcapacityof250,000m3;No.4isolatedpeakis280mlongandwide120m,height52m,blastingquantity90,000m3;No.8solitarypeaklength260m,width110m,height45.2m,blastingquantity110,000m3.4solitarypeaksrequireblastingfloorelevation690m,totalblastingcapacityis83Millionm3.   1.3Thesurroundingenvironmentoftheexplosionarea   Theblastzoneisatypicalkarstlandform,whichisarelativelyflatdepression.Itissurroundedbyundulatingpeakclusters.Fourorphanpeaksarelocatedinthecenterofthevalley.Theyaredistributedinashapeofafigure,amongwhicharethe3rd,4thand2ndpeaks.Thedistanceis60-80m,the8thisolatedpeakisfarapart,andthedistancebetweenthe4thpeakis500m. Therearevillagesaroundthefourisolatedpeaks.Thenearestdistancetothevillageis80m(multipleobjects),andtherestareabove200-250m.Inadditiontotheresidentialareas,therearehigh-voltagelinesandcommunicationstations.(structure)andfacilities,thedistancefromtheexplosionzoneisabout400~500m(asshowninFigure1).    1.4Technicalrequirementsforblastingdesign   GuangxiHuayinAluminumCo.,Ltd.putsforwardthefollowingrequirementsforthedesignofchamberblastingtechnology:   (1)Blastingelevation:allbrokenabove690melevation.   (2)Therockmassafterblastingislessthan300mm,accountingfor60%;300-600mmormore,30%;600mmormore,accountingfor10%.   (3)Projectduration:March18toApril18,atotalof30days.   (4)Noharmtothehousesandotherfacilitiesaroundtheexplosionarea.   2blastingdesign   2.1Blastingplan   Thepurposeofthisblastingistoflatten4orphanpeaks,andtheblastingfragmentshavegradingrequirements.Theenergydistributionofthestrip-shapeddrugroomisuniform,andtheblockandgradingcontrolisbetter.Atthesametime,thelowerpartofthefourisolatedpeaksareconsidered.Thethicklayerandthethicklayeroflimestone,withthemiddlelayeroflimestoneinterposedtherebetween,sotheconcentratedchamberblastingisusedinthethicklayersection,andtheblastingschemecombiningthestripmedicinechamberandtheconcentratedmedicinechamberisgenerallyadopted. Inordertoeffectivelyprotectthebuilding(structure)aroundtheexplosionarea,thedrugroomisarrangedinlayers,theupperdrugroomisdesignedtostrengthenthelooseblasting,thelowerdrugroomislooseblasting,andtheminimumresistancelineiscontrolledwithin20m. Thedetonatingtubeisusedtodetonatethenetwork. Theblastingschemesofthefoursolitarypeaksareasfollows:   (1)No.2orphanpeakiselliptical,withlittlechangeintopography.Themiddleandupperpartsaremedium-thicklayeredlimestone,andthelowerpartisthicktothickthicklayeredlimestone.Twolayersofdrugroomarearranged,andtheupperlayerisstrip-shapedmedicine.Theroomisreinforcedbylooseblasting,andthelowerlayerislooseblastingofconcentrateddrugroom.   (2)TheNo.3orphanpeakisanearlyverticalcylindricalpeak,andthelithologyisamediumthicklayeredlimestone.Threelayersofdrugchambersarearranged.Theuppertwolayersofthedrugchamberarestrip-shapeddrugchambers,whicharecollapsedandblasted.Concentrateddrugroomlooseningblasting.   (3)The4thpeakissimilartothetiger-likeshape.Thefirst(southend)isamedium-thicklayeredlimestone,thelowerpartandthenorthpartarethickandthickthicklayeredlimestone,thesouthissetupwithtwolayersofmedicinerooms,andthenorthissetwithalayerofmedicine.Room,usingconcentrateddrugroomlooseblasting.   (4)No.8orphanpeakissimilartodiamondshape,lithologyismediumthicklayeredlimestone,80monthenorthwestsideofthemountainismulti-objective,mostofthehousesaremudbrickstructure,twolayersofdrugroomarearranged,andthestrip-shapeddrugroomisloosened.blasting.   2.2Designprinciples   Thechamberblastingperiodistight,thes
Blast demolition of a hyperbolic tower
Blast demolition of a hyperbolic tower
Time of issue : 2019-04-19 17:41:00
Completiontime:December2003   ProjectLocation:XinwenPowerPlant,Tai'anCity,ShandongProvince   Completedby:GuangdongHongdaBlastingEngineeringCo.,Ltd.   Projecthostandparticipants:ZhengBingxu,LinZaijian,FuJianqiu,LuoWeitao,WangTie   Writers:LinZaijian,XingGuangwu,LuYi   1ProjectOverview   Inordertoexpandandrenovate,thethermalpowerplantofShandongElectricPowerPipelineCo.,Ltd.needstodismantlethemainbuildingsintheoriginalplantarea.Thehyperboliccoolingtowerisoneofthem. Thebuildingisareinforcedconcretestructurewithatotalheightof51.30m,atotalsquareof614m3,about1470t,thediameterofthecoolingtower,thebottomis36.5m,thetopis21.8m,thesmallestpartis20.9m;themaximumwallthicknessis25cm,theminimumwallthickness10cm;thereservoiris1.8mdeep;thewatertoweris47.4mhigh,anditselevationisshowninFigure1. Thereare5840cm×40cmreinforcedconcretecolumnsontheperipheryofthereservoir.Thecoolwatertowerhasa10mhighcoolingplatform.Theplatformisprefabricatedreinforcedconcretemembers.Thereisnostructuralconnectionwiththecoolwatertowerwall.Thereare68undertheplatform.30cm×30cmreinforcedconcretecolumnsupport,thesurroundingenvironmentisopen,thegenerallayoutisshowninFigure2.   2Selectionofblastingplan   Thecoolwatertowerisahyperbolicfaçadewithalightandthinwallstructure,whichisnarrowerandwiderthanthebottom,andisdifficulttodump. Theblastingschemeofthewatertowerdrawsontheblastingdesignmodeofthetubularstructure,butalargeexplosionheightshouldbeadoptedtoobtainalargeimpactenergy,sothatthethin-walledcylinderwithlong-termcorrosionandsevereweatheringiseasilybrokenanddisintegratedwhenittouchestheground.Goodblastingeffect. Thesupportcolumnofthe10mplatformisalsoblasted.   3Selectionofblastingparameters   3.1Notchhigh   Thetrapezoidalnotchisused,andthenotchis12mhigh.   3.2Notchlengthandnotchcenterangle   Whenthecylinderisblownupbydirectionalblasting,thecenterangleoftheblastingnotchisusuallybetween210°and225°.Aftermanycomparisons,itisconsideredappropriatetotake215°. Thecoldwatertowerhasa10mhighnotchperimeterof101.2m,anotcharclengthofLP=101.2×(215/360)=60.90m,andaretentionarclengthL1=101.2-60.90=40.30m.   3.3Pretreatmentandformationofblastinggap   Sincetheareaof​​thenotchislarge,iftheconcretewallcolumnsinthethin-wallednotchareallblasted,thenumberofblastholesistoolarge,andtheblastingworkloadislarge. Therefore,forthecharacteristicsofthisproject,thefour"edges"ofthetrapezoidalnotchareblastedorpretreated,thatis,atrapezoidalnotchisformed,andthetowerwallinthe"edgeline"doesnotneedtobeblasted,andthecoolwatertowercancollapse. Itsspecificapproachis:   (1)Thenotch"bevelededge"is2mwideandisformedbyremovingtheconcretefromthetowerwallwithwind.   (2)Usinga10mhigh-temperaturecoldwaterplatformasadrilling-eyeconstructionplatform,thetowerwallisraisedupto2m. Atthesametime,pretreatmentiscarriedoutintheblastingarea,the1.2mwidetowerwallispreliminarilyremoved,the1.5mwidetowerwallblastingisretained,andsoon. Thiscanreducetheamountofblastingwork.   (3)Thebottomofthetowerbodyis1.5mhigh.   (4)Cut3slitswithaheightof6mandawidthof1.2mintheforwarddirectionof+12.Omtoweakentherigidityofthetowerbodyandmakethetowerbodyeasytobreakwhenitcollapses.   3.4Holearrangementandsingleholecharge   3.4.1Towerwallblastholeparameters   Sincethewallthicknessofthe10mhighnotchisonly20cm,thediameteroftheselectedblastholeis32mm,theholespacingisa=20cm,therowspacingisb=20cm,theholedepthisl=12cm,theunitconsumptionisK=2000g/m3,andthesingleholedoseq=16g.   3.4.2bottomobliquesupportcolumnblastholeparameters   Thebottomsupportcolumnalsoblasts215°centerangle,atotalof38slantingstruts,eachcolumnofsinglerowofholes,holespacinga=20cm,holedepthl=25cm,unitconsumptionK=1500g/m3,singleholedoseq=50g.   3.4.3Coolwaterplatformsupportcolumnblastholeparameters   Theholedistancea=15cm,theholedepthl=20cm,theunitconsumptionK=1.5kg/m3,andthesingleholedoseq=20g.   3.5Blastingnetworktimedifference   Inthisblastingnetwork,thedetonatorusesamilliseconddelaynon-electricdetonator. Thespecifictimedifferenceis:thecoolingplatformsupportis25ms,theplatformofthe10mhighplatformis300ms,thebottomslopesupportis600ms,theconnectionismadeoffour-wayandplasticdetonatingtube,thetowerwallnotch,thebottomsupport,thecoolwaterplatformsupportfirstformtwoTheringisclosedandthentheringsareoverlappedmultipletimestoformaclosedduplexcrossovernetwork.   4Safetymeasures   (1)Becausethewallofthecoolwatertoweristhin,theblastingareaislarge,theblastholeisdense,andthesingleconsumptionofexplosivesisalsolarge.Therefore,thedrillingpositionanddepthmustbestrictlycontrolled,andthebalanceofthemedicinepackageshouldbekeptascloseaspossible. Thiscancontroltheflyingdistanceoftheflyingstoneandensurethattheexplosioniscompletelybroken.   (2)Double-layeredJingjingandsafetynetattachedtotheoutsideoftheblastingpartofthetowerwall.Thiskindofnear-bodyprotectioncanblocktheflyingstoneandshortentheflyingdistanceoftheflyingstone.   5Vibrationsafetycheck   Thesafetyvibrationofthisprojectismainlycomposedoftwoparts,thatis,theseismicwavegeneratedbytheexplosiveexplosionandthevibrationcausedbytheimpactofthegroundwhenthebuildin
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Completiontime:December2003   ProjectLocation:XinwenPowerPlant,Tai'anCity,ShandongProvince   Completedby:GuangdongHongdaBlastingEngineeringCo.,Ltd.   Projecthostandparticipants:ZhengBingxu,LinZaijian,FuJianqiu,LuoWeitao,WangTie   Writers:LinZaijian,XingGuangwu,LuYi   1ProjectOverview   Inordertoexpandandrenovate,thethermalpowerplantofShandongElectricPowerPipelineCo.,Ltd.needstodismantlethemainbuildingsintheoriginalplantarea.Thehyperboliccoolingtowerisoneofthem. Thebuildingisareinforcedconcretestructurewithatotalheightof51.30m,atotalsquareof614m3,about1470t,thediameterofthecoolingtower,thebottomis36.5m,thetopis21.8m,thesmallestpartis20.9m;themaximumwallthicknessis25cm,theminimumwallthickness10cm;thereservoiris1.8mdeep;thewatertoweris47.4mhigh,anditselevationisshowninFigure1. Thereare5840cm×40cmreinforcedconcretecolumnsontheperipheryofthereservoir.Thecoolwatertowerhasa10mhighcoolingplatform.Theplatformisprefabricatedreinforcedconcretemembers.Thereisnostructuralconnectionwiththecoolwatertowerwall.Thereare68undertheplatform.30cm×30cmreinforcedconcretecolumnsupport,thesurroundingenvironmentisopen,thegenerallayoutisshowninFigure2.   2Selectionofblastingplan   Thecoolwatertowerisahyperbolicfaçadewithalightandthinwallstructure,whichisnarrowerandwiderthanthebottom,andisdifficulttodump. Theblastingschemeofthewatertowerdrawsontheblastingdesignmodeofthetubularstructure,butalargeexplosionheightshouldbeadoptedtoobtainalargeimpactenergy,sothatthethin-walledcylinderwithlong-termcorrosionandsevereweatheringiseasilybrokenanddisintegratedwhenittouchestheground.Goodblastingeffect. Thesupportcolumnofthe10mplatformisalsoblasted.   3Selectionofblastingparameters   3.1Notchhigh   Thetrapezoidalnotchisused,andthenotchis12mhigh.   3.2Notchlengthandnotchcenterangle   Whenthecylinderisblownupbydirectionalblasting,thecenterangleoftheblastingnotchisusuallybetween210°and225°.Aftermanycomparisons,itisconsideredappropriatetotake215°. Thecoldwatertowerhasa10mhighnotchperimeterof101.2m,anotcharclengthofLP=101.2×(215/360)=60.90m,andaretentionarclengthL1=101.2-60.90=40.30m.   3.3Pretreatmentandformationofblastinggap   Sincetheareaof​​thenotchislarge,iftheconcretewallcolumnsinthethin-wallednotchareallblasted,thenumberofblastholesistoolarge,andtheblastingworkloadislarge. Therefore,forthecharacteristicsofthisproject,thefour"edges"ofthetrapezoidalnotchareblastedorpretreated,thatis,atrapezoidalnotchisformed,andthetowerwallinthe"edgeline"doesnotneedtobeblasted,andthecoolwatertowercancollapse. Itsspecificapproachis:   (1)Thenotch"bevelededge"is2mwideandisformedbyremovingtheconcretefromthetowerwallwithwind.   (2)Usinga10mhigh-temperaturecoldwaterplatformasadrilling-eyeconstructionplatform,thetowerwallisraisedupto2m. Atthesametime,pretreatmentiscarriedoutintheblastingarea,the1.2mwidetowerwallispreliminarilyremoved,the1.5mwidetowerwallblastingisretained,andsoon. Thiscanreducetheamountofblastingwork.   (3)Thebottomofthetowerbodyis1.5mhigh.   (4)Cut3slitswithaheightof6mandawidthof1.2mintheforwarddirectionof+12.Omtoweakentherigidityofthetowerbodyandmakethetowerbodyeasytobreakwhenitcollapses.   3.4Holearrangementandsingleholecharge   3.4.1Towerwallblastholeparameters   Sincethewallthicknessofthe10mhighnotchisonly20cm,thediameteroftheselectedblastholeis32mm,theholespacingisa=20cm,therowspacingisb=20cm,theholedepthisl=12cm,theunitconsumptionisK=2000g/m3,andthesingleholedoseq=16g.   3.4.2bottomobliquesupportcolumnblastholeparameters   Thebottomsupportcolumnalsoblasts215°centerangle,atotalof38slantingstruts,eachcolumnofsinglerowofholes,holespacinga=20cm,holedepthl=25cm,unitconsumptionK=1500g/m3,singleholedoseq=50g.   3.4.3Coolwaterplatformsupportcolumnblastholeparameters   Theholedistancea=15cm,theholedepthl=20cm,theunitconsumptionK=1.5kg/m3,andthesingleholedoseq=20g.   3.5Blastingnetworktimedifference   Inthisblastingnetwork,thedetonatorusesamilliseconddelaynon-electricdetonator. Thespecifictimedifferenceis:thecoolingplatformsupportis25ms,theplatformofthe10mhighplatformis300ms,thebottomslopesupportis600ms,theconnectionismadeoffour-wayandplasticdetonatingtube,thetowerwallnotch,thebottomsupport,thecoolwaterplatformsupportfirstformtwoTheringisclosedandthentheringsareoverlappedmultipletimestoformaclosedduplexcrossovernetwork.   4Safetymeasures   (1)Becausethewallofthecoolwatertoweristhin,theblastingareaislarge,theblastholeisdense,andthesingleconsumptionofexplosivesisalsolarge.Therefore,thedrillingpositionanddepthmustbestrictlycontrolled,andthebalanceofthemedicinepackageshouldbekeptascloseaspossible. Thiscancontroltheflyingdistanceoftheflyingstoneandensurethattheexplosioniscompletelybroken.   (2)Double-layeredJingjingandsafetynetattachedtotheoutsideoftheblastingpartofthetowerwall.Thiskindofnear-bodyprotectioncanblocktheflyingstoneandshortentheflyingdistanceoftheflyingstone.   5Vibrationsafetycheck   Thesafetyvibrationofthisprojectismainlycomposedoftwoparts,thatis,theseismicwavegeneratedbytheexplosiveexplosionandthevibrationcausedbytheimpactofthegroundwhenthebuildin
Xinjiang Jinghe police successfully disposed of a hazardous accident transport vehicle accident
Xinjiang Jinghe police successfully disposed of a hazardous accident transport vehicle accident
At15o'clockonthe29thofNovember,XinjiangJinghepolicesuccessfullydisposedatrafficaccidentinvolvinghazardouschemicalstransportvehiclesonthe312NationalRoad,andeliminatedamajorsafetyhazardintime.   Atabout15o'clockonthesameday,theaccidentsquadronofthetrafficpolicebrigadeofJingheCountyPublicSecurityBureaureceivedareportsayingthatadangerouschemicalstruckwastransportedalongthe312NationalRoadfromthewesttotheeasttotheJingheRiverattheoldrailwaystationofthe312NationalRoadinJingheCounty.NeartheroadsectionoftheBaotouSubstation,arolloveraccidentoccurredwhenthevehicleenteredtheintersection,andonepersonwasslightlyinjured.Thevehicleslammedtheliquefiedgastankatanytime.   Afterthetrafficpolicebrigaderushedtothescene,itquicklystartedthedangerouschemicalsvehicleaccidenthandlingplan,timelysentthepoliceinformationtothe110commandcenter,andnotifiedtherelevantdepartments. Thecarisfullof25tonsofpetroleumliquefiedgas,whichisaflammableandexplosivegas.Afterthepoliceandfireofficersinspectedtheliquefiedgastanksthatfellovertheground,theyfoundthattherewasnoleakageofliquefiedgas,buttherewasstillinstability,likeaUntimelybombsthreatenthelivesofcivilianpolice,fireofficersandotherrescuers.   Inordertoensuresafety,thepolicehandledthescene:First,evacuatetheonlookersimmediately,setuptwo-waytrafficcontrolwithinonekilometeroftheincidenttoensurethesafetyofthestaffintherescuearea;second,immediatelynotifytheunitofthevehicleinXinjiangLimingXinshunIndustryandTradeDangerousChemicalsTransportationCo.,Ltd.,letitsunitheadimmediatelyrushedtothescene;Third,theJingheCountyTrafficPolicePatrolGroupdispatchedalargenumberofpoliceforcestomaintaintrafficorderonthespot,preventsecondaryaccidents,andthenstarttheaccidentvehicleCarryoutarescue.   Afteron-siteinvestigation,investigationandevidencecollection,itwasfoundthatat15:20onNovember29,Gudroveanewheavy-dutysemi-trailertractorG63506(equippedwith25tonsofflammablehazardousmaterials)toDushanziCity.Whentheroadisfrozen,theroadturnsoverwhentheroadisturnedtothefork,causingonepersontobeinjuredandthevehicletobedamaged. After6hoursofrescue,finallyat21o'clockthatnight,thevehiclehazardouschemicalswereeffectivelydisposedof,theaccidentsitewascompletelyclearedandevacuated,andthe312NationalRoadresumednormalpassage.   Currently,thecaseisbeingprocessed.
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At15o'clockonthe29thofNovember,XinjiangJinghepolicesuccessfullydisposedatrafficaccidentinvolvinghazardouschemicalstransportvehiclesonthe312NationalRoad,andeliminatedamajorsafetyhazardintime.   Atabout15o'clockonthesameday,theaccidentsquadronofthetrafficpolicebrigadeofJingheCountyPublicSecurityBureaureceivedareportsayingthatadangerouschemicalstruckwastransportedalongthe312NationalRoadfromthewesttotheeasttotheJingheRiverattheoldrailwaystationofthe312NationalRoadinJingheCounty.NeartheroadsectionoftheBaotouSubstation,arolloveraccidentoccurredwhenthevehicleenteredtheintersection,andonepersonwasslightlyinjured.Thevehicleslammedtheliquefiedgastankatanytime.   Afterthetrafficpolicebrigaderushedtothescene,itquicklystartedthedangerouschemicalsvehicleaccidenthandlingplan,timelysentthepoliceinformationtothe110commandcenter,andnotifiedtherelevantdepartments. Thecarisfullof25tonsofpetroleumliquefiedgas,whichisaflammableandexplosivegas.Afterthepoliceandfireofficersinspectedtheliquefiedgastanksthatfellovertheground,theyfoundthattherewasnoleakageofliquefiedgas,buttherewasstillinstability,likeaUntimelybombsthreatenthelivesofcivilianpolice,fireofficersandotherrescuers.   Inordertoensuresafety,thepolicehandledthescene:First,evacuatetheonlookersimmediately,setuptwo-waytrafficcontrolwithinonekilometeroftheincidenttoensurethesafetyofthestaffintherescuearea;second,immediatelynotifytheunitofthevehicleinXinjiangLimingXinshunIndustryandTradeDangerousChemicalsTransportationCo.,Ltd.,letitsunitheadimmediatelyrushedtothescene;Third,theJingheCountyTrafficPolicePatrolGroupdispatchedalargenumberofpoliceforcestomaintaintrafficorderonthespot,preventsecondaryaccidents,andthenstarttheaccidentvehicleCarryoutarescue.   Afteron-siteinvestigation,investigationandevidencecollection,itwasfoundthatat15:20onNovember29,Gudroveanewheavy-dutysemi-trailertractorG63506(equippedwith25tonsofflammablehazardousmaterials)toDushanziCity.Whentheroadisfrozen,theroadturnsoverwhentheroadisturnedtothefork,causingonepersontobeinjuredandthevehicletobedamaged. After6hoursofrescue,finallyat21o'clockthatnight,thevehiclehazardouschemicalswereeffectivelydisposedof,theaccidentsitewascompletelyclearedandevacuated,andthe312NationalRoadresumednormalpassage.   Currently,thecaseisbeingprocessed.
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The fourth blasting vibration measurement technology seminar was held
BlastingVibrationTestingTechnologySeminar  BlastingVibrationTestingTechnologySeminar   OnApril15-17,2011,ChinaEngineeringBlastingAssociationhelda“BlastingVibrationTechnologySeminar”atButterflyValleyHotelinNanhai,GuangdongProvince.TheconferencewashostedbyChinaEngineeringBlastingAssociation,GuangzhouZhongboSafetyNetTechnologyCo.,Ltd.,YangtzeRiverWaterConservancyThecommitteewasco-organizedbytheYangtzeRiverScientificResearchInstituteandSouthChinaUniversityofTechnology,andGaoYintong,secretarygeneraloftheassociation,presidedoverthemeeting.  ChairmanWangXuguangattendedthemeetingtomakeanimportantspeech   ChairmanWangXuguangattendedthemeetingandmadeanimportantspeech. AcademicianWangpointedout:Atthebeginningofthe12thFive-YearPlan,thesituationinallwalksoflifeisverygood.Thisisagoodpromotionforthedevelopmentofourengineeringblastingindustry,anditalsomakesusfeelacertainpressure. Blastingvibrationmonitoringisamajoreventinourengineeringblastingindustry.ThesafetyaccidentsthattheChinaEngineeringBlastingAssociationhasbeeninvolvedininrecentyearsareallrelatedtotheimpactofblastingvibration.Therefore,theblastingvibrationpropagationlawshouldbewellrecorded,andadatabaseshouldbeestablished.Class,summary,refiningandprocessingcaneffectivelypromotetheresearchofblastingtheoryandpromotethebetterdevelopmentofengineeringblastingindustry.   AcademicianWangreviewedandsummarizedtheresearchworkonvibrationmeasurementintheindustrysincetheChinaEngineeringBlastingAssociation's"StudyontheImpactofBlastingVibrationandTestingTechnology"heldinHangzhouonApril10,2009.WangAcademicianpointedoutthattheChinaAssociationofExplosivesfrom2009SinceAprilofthisyear,threesymposiumsonblastingvibrationtestinghavebeenheld.Thismeetingisthefourthspecialmeeting.Afterthemeeting,thedevelopmentdirectionofindustrialblastingtestingtechnologyandvibrationtestinginstrumentsshouldbeclarifiedandshouldbeimplemented.Apersonisresponsibleforimplementation.   WuXinxia,​​QuGuangjian,GaoYing,HuangYuewen,LongYuan,YangNianhua,GaoWenxue,ChenQiliangandotherexpertsmadespecialspeeches,GuangzhouZhongboSafetyNetTechnologyCo.,Ltd.,SouthChinaUniversityofTechnologyandYangtzeRiverWaterResourcesCommissionChangjiangAcademyofSciencesandotherunitsontheblastingVibrationremotetesting,calibrationandsystemmanagementweredemonstratedanddemonstratedonsite.  ProfessorWuXinxiafromtheYangtzeRiverScientificResearchInstituteoftheYangtzeRiverWaterResourcesCommission  ProfessorQuGuangjianfromGuangzhouZhongboSafetyNetTechnologyCo.,Ltd.  AssociateProfessorGaoYingfromSouthChinaUniversityofTechnology  SeniorEngineerHuangYangwenfromtheYangtzeRiverScientificResearchInstituteoftheYangtzeRiverWaterResourcesCommittee  ProfessorLongYuanfromthePLAUniversityofScienceandTechnology  ResearcherYangNianhuafromChinaAcademyofRailwaySciences  ProfessorofHighLiterature,BeijingUniversityofTechnology  AssociateProfessorChenQiliangfromGuangzhouZhongboSafetyNetTechnologyCo.,Ltd.   ProfessorWuXinxiafromtheYangtzeRiverScientificResearchInstituteoftheYangtzeRiverWaterResourcesCommitteeintroducedtheconstructionconceptandmanagementmodeofthe"DangerDetectionRemoteSensingInformationManagementSystemforEngineeringBlasting"basedontheInternetofThingstechnology,andthecorrespondingblastingremoteintelligentrecorderandblastingvibrationremotecalibrationequipment;GuangzhouZhongboProfessorQuGuangjianofSafetyNetTechnologyCo.,Ltd.introducedtheimportanceofbuildingavibrationmeasurementinformationmanagementsystemandthecomposition,functionandobjectivesofthevibrationmeasurementinformationmanagementsystem,aswellasremotecalibrationtechnology,dataprocessingandmethods;AssociateProfessorGaoYingofSouthChinaUniversityofTechnologyThekeytechnologyofremotecalibrationandvibrationmeasurementplatformbasedonvibrationgridisalsodemonstrated.TheseniorengineerofYangtzeRiverWaterResourcesCommitteeYangYuewenintroducedthecomposition,performanceandremotecalibrationmethodofblastingdatamonitoringsystembasedonInternetofThings.TheproblemwasdiscussedbyProf.LongYuanfromPLAUniversityofScienceandTechnology.Theresearchonthestandardizationofengineeringblastingvibrationtestingtechnologywasintroduced.ResearcherYangNianhuaofChinaRailwayScienceResearchInstituteintroducedthetechnologyoffieldtestingofblastingvibration;ProfessorGaoWenofBeijingUniversityofTechnologyintroducedshallowtunnel Excavationblastingvibrationremotemonitoringsystemandtestingtechnology;AssociateProfessorChenQiliangofGuangzhouZhongboSafetyNetTechnologyCo.,Ltd.takesthewesternpipelineblastingvibrationmonitoringpracticeasanexampletointroducethestepsandcontentsofblastingvibrationmonitoringwork,anddiscussestheblastingvibrationmonitoringtechnologyinthenearApplicationproblemsinpipelineblastingengineering.   Afteraheateddiscussion,theparticipatingexpertsaffirmedthattheapplicationofinformationnetworktechnologyinthefieldofengineeringblastingisthefuturedevelopmenttrend,andputforwardthepreparationofthe"TechnicalTeachingMaterialsforEngineeringBlastingVibrationMeasurementTechnology"and"TechnicalSpecificationsforEngineeringBlastingVibrationInspection(S
Associate Professor Chen Qiliang from Guangzhou Zhongbo Safety Net Technology Co., Ltd.   Professor Wu Xinxia from the Yangtze River Scientific Research Institute of the Yangtze River Water Resources Committee introduced
Announcement:TheMinistryofPublicSecurityissuedtwostandardsforgradingmanagementofblastingoperations   AccordingtotheRegulationsontheSafetyManagementofCivilExplosives,theMinistryofPublicSecurityissuedtwostandardsforthegradingmanagementofblastingoperationsonMay2,2012-"QualificationRequirementsandManagementRequirementsforBlastingOperationUnits"(GA990-2012),Theblastingoperationprojectmanagementrequirements(GA991-2012)(hereinafterreferredtoas"twostandards"),andissuedthe"Noticeontheimplementationoftheblastingoperationunitqualificationconditionsandmanagementrequirements"and"blastingoperationprojectmanagementrequirements"》.   Recently,theMinistryofPublicSecuritywillorganizeandcarryoutnationalpublicityactivities. TheProvincialDepartmentwill,inaccordancewiththespiritoftheMinistryofPublicSecurity'snoticeandtherequirementsofpublicity,combinedwiththepracticeofpublicsecuritymanagementintheblastingoperationindustryofourprovince,carefullystudyandformulatetheimplementationofworksteps,conductresearch,developaworksystem,establishaspecialorganization,andcarryoutimplementationworkinanorderlymanner. Thespecificworkrequirementsaretobenotifiedbytheprovincialgovernment.   AccordingtothenoticeoftheMinistryofPublicSecurity,theworkofcleaningupandrectifyingtheexistingblastingoperationsunitsandissuingthe"BlastingOperationUnitPermit"shallbecompletedbyDecember31,2012. Therefore,asofJanuary1,2013,anyunitmustholdtheBlastingOperationUnitPermittoengageinblastingoperations,otherwiselegalliabilityshouldbepursued. Beforethatdate,theoriginallegal"ExplosivesUsePermit"cancontinuetobeusedbyunitsthathavenotbeenorderedtostoptheiremployment.Thecommercialblastingoperationunitcanstillholdaneffectiveconstructiondepartment"blastinganddemolition"qualification.Thedocumentsareintheprovincetoundertaketheblastingoperationitemsofthecorrespondingtype.   Fromnowon,theprovincewillnolongerapprovetheoriginal"ExplosiveGoodsUsePermit",andthepublicsecurityorganswillstopacceptingtheconditionalreviewworkoftheconstructionandconstructiondepartmententrustedbytheconstructiondepartmentto"blastinganddemolitioncontractingqualifications".   downloadattachment:   1.Noticeontheimplementationofthe"QualificationConditionsandManagementRequirementsforBlastingOperationUnits"and"ManagementRequirementsforBlastingOperationProjects"   2.Qualificationconditionsandmanagementrequirementsoftheblastingoperationunit   3.Blastingoperationprojectmanagementrequirements
Special Report on Demolition Blasting of 104 Meters High Building in Zhongshan City, Guangdong Province
Editor'snote:   ThePeakGardenwasbuiltin1994andwascappedin1997.The34-storeybuildingis344.1metershigh.Itisaframe-supportedshearwallstructure.Itisthetallestbuildingdemolishedbydomesticblastingandhasappliedtobecomethe"Asia'sfirstexplosion".Oneofthefewhigh-risebuildings. ThePeakGardenwasappliedforblastinginFebruarytoofficialblastingonAugust13.Thetimewasupto6months.Thedayswearelookingforwardtoarefinallycoming,andIwishtheChinesepeopleasuccessfulblast!   Joyaftersuccessfulblasting    Figure1   FigureII   Successfulblastingofthetopgarden    PreparetoblastChenShaopantoprovidepictures    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess   ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess  ChenShaopanprovidespicturesoftheblastingprocess   ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess    ChenShaopanprovidespicturesoftheblastingprocess   ChenShaopanprovidespicturesoftheblastingprocess   "Asia'sfirst-explosion"trackingreport-   Unfinished15yearsofplanning   "Asia'sfirstexplosion"     ——Theblastingofthe104.1mhighbuildingofShijiePeakGardeninZhongshan,Guangdong   "Five,four,three,two,one,detonation!"   At10:30onthemorningofAugust13,withtheorderofLiuWen,thechairmanofthesmashingengineeringheadquartersofShijiePeakGarden,thestaffofGuangdongZhongrenGroupConstructionCo.,Ltd.Pressedthepulsedetonatorinyourhand. "嘣,嘣,嘣..."18consecutiveloudnoises,afterashort3.6seconds,atotalheightof104.1meters,atotalof34layersofZhongshanShijiePeakGardenunfinishedbuildingsweighingtensofthousandsoftonsofbody,oneSuddenly,hesuddenly"squats"andsuddenlyrushestowardthewestsideoftheopenspace. Thethreehigh-poweredfireenginesthathavebeenwaitingforalongtimeimmediatelysprayedahugeamountofwatermist,andcarriedout“interceptioninterception”onthedust“whitesmoke”causedbytheexplosion,andsprinkledwatertoreducedust. Congratulationsontheheadquartersofthemeetingroomonthe4thfloorofShunjingGarden,andthesimpleviewingplatformsetuponthebalconyburstintoapplause. Atthispoint,theblastingprojectofthePeakGarden,whichisknownasthe"Asia'sNo.1Blast",wasacompletesuccess. Afterthat,itwillenterthedemolitionandclean-upphaseforupto50days.   ItisunderstoodthatthetopofthehillgardenislocatedinthesouthsideofZhongshanCollege,DongchengDistrict,ZhongshanCity,ZhongshanCity,ontheeastsideofthesnowroad,willbebuiltintheStarCityBuilding. Thebuildingtobeexplodedis104.1meters,withatotalof34floors(including1basement),33.8meterswidefromeasttowest,38.5meterslongfromnorthtosouth,and27875squaremeters. Thebuildingisframe-supportedshearwallstructure,arrangedina“well”shape.The1stfloorandthebasementareframestructures,the2-32floorsareshearwallstructures,andthemiddlepartisthecoretube. Theeastsideofthebuildingis44metersawayfromthebottomoftheslope,thesoutheastsideis40metersawayfromDongyueTemple;thesouthsideis5.2metersawayfromthewall,only6metersawayfromthenearestresidentialhouse;thewestsideis81metersawayfromthebottomoftheslope. Thebuildingwasbuiltin1994andwascappedin1997. Forvariousreasons,thebuildinghasnotbeenofficiallyputintouse.IthasbeenrenamedasthePeakGarden,YangmingMountainVilla,StarCity,andZhongshanCity,butithasneverbeenabletogetridofthefateofthe"unfinished". InJune2007,thebuildingwastransferredtoZhongshanChangjiangZhaoyeRealEstateDevelopmentCo.,Ltd.asawhole. InordertocopewiththeoverallplanningdevelopmentofZhongshanCity,acceleratethepaceofrenovationoftheoldcity,andaccordingtothecompany'sprojectplanningneeds,decidedtouseblastingdemolition,theplotwillberebuiltafterthedemolition.   OnFebruary25,commissionedbythePublicSecurityBureauoftheMinistryofPublicSecurity,theGuangdongProvincialPublicSecurityDepartmentandtheZhongshanPublicSecurityBureau,theChinaEngineeringBlastingAssociationhostedareviewmeetinginBeijingonthe“BlastingDemolitionProjectoftheUnfinishedBuildingoftheShijiazhuangPeakGardeninZhongshanCity”.TheexpertgroupledbyWangXuguang,academicianoftheChineseAcademyofEngineeringandchairmanoftheChinaEngineeringBlastingAssociation,listenedtothebriefingandreviewrequirementsoftheProvincialPublicSecurityDepartmentandtheMunicipalPublicSecurityBureauontheblastingproject,andintroducedtheconstructionplanoftheGuangdongZhongrenGroup.Afterquestioninganddiscussion,thereviewopinionswereputforwardandtheMunicipalPublicSecurityBureauwasapprovedtoapprovetheconstructionoftheproject. Inordertoensurethesafetyandsuccessoftheblastingdemolitionproject,theZhongshanMunicipalGovernmenthasspeciallysetupacoordinationheadquarters,whichisresponsiblefort
Call for papers on participation in the "6th International Conference on Explosives and Blasting Technology of China, Japan and Korea"
Allrelevantunits:   The6thInternationalConferenceonExplosivesandBlastingTechnologyofChina,JapanandKoreawasscheduledtobeheldinSouthKoreafromOctober12to16,2011.Theconferenceincludedexplosives,detonationequipment,geotechnicalblasting,mineblastinganddemolitionblasting. Inordertostrengtheninternationalacademicexchangesandtechnicalcooperation,theChinaEngineeringBlastingAssociationisnowissuingnoticesofessaystorelevantunitsanddepartments.Expertsfromenterprises,institutions,researchinstitutesanduniversitiesarewelcometosignupandactivelycontributetotheconference.   Theessaycontentisasfollows:   1.Callforpapers:   TheauthorisaskedtofirstsubmitanEnglishabstractofabout200to400words(includingthetitleofthearticle,author,unit,contactnumberande-mail)andkeywords. Thebestchoiceis3to5keywords.   Second,thedraftschedule:   (1)DeadlineforsubmissionofEnglishabstracts:July20,2011   (2)DeadlineforsubmissionoffulltextinEnglish:September10,2011   Third,themodeofsubmission:   PleasesendtheEnglishabstracttotheemailaddress:cseb@cseb.org.cnormingxiuzhu@yahoo.com.cn   Contact:ZhuMingxiu   Contactnumber:(010)88399565   Fax:(010)68344564   Contactaddress:No.1WenxingStreet,Xizhimen,Beijing100044
Seven years of honing the "Blasting Net" sharp display
Time of issue : 2019-05-30 10:01:00
TheCoalIndustryPublishingHousepublishedthenewbook"ThePracticalManualforCoalMineBlasting"publishedinApril2008,andintroducedthedetailsof"ZhongboNet"intheentiresectionofChapter23ofChapter23,fullyaffirmingitssafetytothecoalmineblastingindustry.Informationproductionplaysanimportantrole.   ItisenoughtoprovethatundertheleadershipoftheChinaEngineeringBlastingAssociationandthestrongsupportoftheblastingassociationsofvariousprovincesandcities,aftersevenyearsoftempering,intheeraofrapiddevelopmentofinformationtechnology,"ChinaBlastNetwork"hasbecomeChinawithoutanydispute.Theforerunnerofthedevelopmentofinformationizationintheengineeringblastingindustryhasbecomethelinkoftheinformationtransmissionoftheblastingindustryandthecivilexplosiveequipmentindustryandtheinformationcenterfortheacquisitionofrelevantinformation.   "ChinaBlastNetwork"hasbeenrecognizedbytheindustryasthefirstportalsiteoftheblastingindustry. Theloudandmeaningfulnameof"BlastingNet"isonceagainrevealed!   ChinaBlastingNetworkEditorialDepartment   April10,2009

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