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Principle and design of demolition blasting
Principle and design of demolition blasting
Time of issue : 2019-05-30 16:49:00
01equivalentenergyprinciple   Accordingtotheblastingobject,conditionsandcontrolrequirements,itispreferredtocontroltheexplosionparameters,thatis,toselecttheoptimalaperture,holedepth,numberofholes,holedistance,rowspacingandexplosiveunitconsumption,etc.,usingappropriatechargingstructure,detonationmethodandexplosiveThevariety,inordertoachievetheblastenergygeneratedbyeachblastholeisequaltotheminimumenergyrequiredtobreakthemediumaroundthehole. Thatistosay,themediumisonlyproducedwithacertainwidthofcrackorlooselybrokeninplace,withouttheresidualenergythatcausesharm,whichistheprincipleofequalenergy.   02differentialprincipleenergydeconcentratingprinciple   Thedifferentialprincipleofcontrolledblastingistodecentralizeandquantifythetotalchargerequiredforexplodingacertaintarget,soitisalsocalledtheprincipleofdecentralizationandtrace. Inotherwords,itisto“quantifythetotalcharge”intothescatteredblastholes,andtoexplodeinmultiplestagesthroughbatchdelay,whichnotonlymeetstherequirementsofblastingquality,butalsosignificantlyreducestheblastinghazard.thegoalof.   03destabilityprinciple   Onthebasisofcarefulanalysisandstudyofthestressstate,loaddistributionandactualbearingcapacityofbuildingsorstructures,controlblastingisusedtoblastsomekeycomponentsoftheload-bearingstructure,sothatitlosesitsbearingcapacityandatthesametimedestroysthestiffnessofthestructure.Theprinciplethatthebuildingorstructurecollapsesordirectionalallycollapsesundertheactionofitsownweightinthecaseofoveralllossofstability.Thisprincipleiscalledtheprincipleofinstability.   04bufferprinciple   Onthebasisoftheblastingenergyandchargestructurewhicharesuitableforcontrollingblasting,theimpactofthepeakpressureoftheblastingstresswaveonthemediumisweakened,sothattheblastingenergyisreasonablydistributedandutilized,whichiscalledthebufferprinciple.   05protectionprinciple   Onthebasisofresearchingandanalyzingthebasiclawsofcontrolledblastingtheoryandblastinghazard,byusingeffectivetechnicalmeasures,theblastinghazardthathasbeencontrolledisfurtherprotected,whichiscalledtheprotectionprinciple.   06demolitionblastingtechnologydesigntechnicaldesignofdemolitionblasting   Technicaldesignisthecorepartofthedemolitionblasting,whichisbasedontheprinciplesproposedbytheblastingscheme. Thecontentsinclude:engineeringoverview,programselection,selectionofblastingparameters,charge,blastingnetworkdesign,safetydistancecalculation,accidentpreventionandtreatmenttechnology,blastingdesigndrawings.   07demolitionblastingconstructiondesignworkingdesignofdemolitionblasting   Constructiondesignmainlyincludesconstructionmethods,organizationmanagement,constructionsafetyandsoon.   08shearbreakingformulaareaandvolumeformula;shearcrushformula   Theformulastatesthattheenergyconsumptionofexplosivesinademolitionblastshouldconsistoftwoparts:theenergyoftherheologicalorplasticdeformationoftheinnerlayerofthemediumandtheenergyconsumedbythefracturemedium. Theformulaestablishedaccordingtothisiscalledtheshearbreakingformula.   09Empiricalformulaconsideringthefragmentationdegree   Fortheconcretetestblockwithoutblasting,itisdestroyedintheformofradialexplosioncracks. Atthistime,therelationshipbetweenthenumberofslitsIVandtheunitconsumptionqis: N=KNq2/3   WhereNisthenumberofslits;   KN-afactorrelatedtotheperformanceoftheexplosiveandthecriticalbreakingspeedofthematerial;   q——Unitexplosiveconsumption.   10heightofbreaking;destructionheight   Inordertomakethebuildingunstableandcollapse,theexplosionofthebuildingcarrierisdestroyed.   11minimumdestructionheightminimumdestroyingheight   Inordertomaketheframeunstable,itisnecessarytofirstbreaktheconcreteofacertainheightofthecolumnandbreakitawayfromthesteelframe. Whenthestaticpressureloadonthetopoftheskeletonexceedsitsultimatecompressivestrengthorreachesthecriticalloadofinstability,thecolumncollapsesandcollapses. Thecolumnfailureheightthatsatisfiestheaboveconditionsiscalledtheminimumdamageheighthmin. Theload-bearingcolumndamageheighthisgreaterthantheminimumdamageheight.   12Demolitionblastingdesigncontentdesigncontentofdemolitionblasting   Theblastingdesigncanbedividedintothreestages:feasibilitystudy,technicaldesignandconstructiondrawingdesign. ClassAdemolitionblastingshouldbecarriedoutinstrictaccordancewiththeabovethreestages. Bandcdemolitionblastingcancombinefeasibilitystudyandtechnicaldesignonce.   13demolitionblastingdesignreviewofdemolitionblasting   ThedemolitionblastingdesignofGradeA,GradeBandGradeCshallbesubjecttotheapprovaloftherelevantdepartmentsandshallnotbecommencedwithoutapproval.   14singleholepatternarrangementformholepatternofbuildinginfrastructureblastingdemolition   Thearrangementoftheblastholesisspecificallydeterminedaccordingtotheshape,positionandstructuralcharacteristicsoftheblastingbody.Verticalholesorhorizontalholesaregenerallyused(verticalholesshouldbeconsideredfirst).   Factorsaffectingtheamountofcharge;factorsdeterminingcharge;   Therearemanyfactorsaffectingtheamountofcharge,including:1)theperformanceofexplosives;2)thenatureofthematerialbeingexploded;3)theblastingcond
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01equivalentenergyprinciple   Accordingtotheblastingobject,conditionsandcontrolrequirements,itispreferredtocontroltheexplosionparameters,thatis,toselecttheoptimalaperture,holedepth,numberofholes,holedistance,rowspacingandexplosiveunitconsumption,etc.,usingappropriatechargingstructure,detonationmethodandexplosiveThevariety,inordertoachievetheblastenergygeneratedbyeachblastholeisequaltotheminimumenergyrequiredtobreakthemediumaroundthehole. Thatistosay,themediumisonlyproducedwithacertainwidthofcrackorlooselybrokeninplace,withouttheresidualenergythatcausesharm,whichistheprincipleofequalenergy.   02differentialprincipleenergydeconcentratingprinciple   Thedifferentialprincipleofcontrolledblastingistodecentralizeandquantifythetotalchargerequiredforexplodingacertaintarget,soitisalsocalledtheprincipleofdecentralizationandtrace. Inotherwords,itisto“quantifythetotalcharge”intothescatteredblastholes,andtoexplodeinmultiplestagesthroughbatchdelay,whichnotonlymeetstherequirementsofblastingquality,butalsosignificantlyreducestheblastinghazard.thegoalof.   03destabilityprinciple   Onthebasisofcarefulanalysisandstudyofthestressstate,loaddistributionandactualbearingcapacityofbuildingsorstructures,controlblastingisusedtoblastsomekeycomponentsoftheload-bearingstructure,sothatitlosesitsbearingcapacityandatthesametimedestroysthestiffnessofthestructure.Theprinciplethatthebuildingorstructurecollapsesordirectionalallycollapsesundertheactionofitsownweightinthecaseofoveralllossofstability.Thisprincipleiscalledtheprincipleofinstability.   04bufferprinciple   Onthebasisoftheblastingenergyandchargestructurewhicharesuitableforcontrollingblasting,theimpactofthepeakpressureoftheblastingstresswaveonthemediumisweakened,sothattheblastingenergyisreasonablydistributedandutilized,whichiscalledthebufferprinciple.   05protectionprinciple   Onthebasisofresearchingandanalyzingthebasiclawsofcontrolledblastingtheoryandblastinghazard,byusingeffectivetechnicalmeasures,theblastinghazardthathasbeencontrolledisfurtherprotected,whichiscalledtheprotectionprinciple.   06demolitionblastingtechnologydesigntechnicaldesignofdemolitionblasting   Technicaldesignisthecorepartofthedemolitionblasting,whichisbasedontheprinciplesproposedbytheblastingscheme. Thecontentsinclude:engineeringoverview,programselection,selectionofblastingparameters,charge,blastingnetworkdesign,safetydistancecalculation,accidentpreventionandtreatmenttechnology,blastingdesigndrawings.   07demolitionblastingconstructiondesignworkingdesignofdemolitionblasting   Constructiondesignmainlyincludesconstructionmethods,organizationmanagement,constructionsafetyandsoon.   08shearbreakingformulaareaandvolumeformula;shearcrushformula   Theformulastatesthattheenergyconsumptionofexplosivesinademolitionblastshouldconsistoftwoparts:theenergyoftherheologicalorplasticdeformationoftheinnerlayerofthemediumandtheenergyconsumedbythefracturemedium. Theformulaestablishedaccordingtothisiscalledtheshearbreakingformula.   09Empiricalformulaconsideringthefragmentationdegree   Fortheconcretetestblockwithoutblasting,itisdestroyedintheformofradialexplosioncracks. Atthistime,therelationshipbetweenthenumberofslitsIVandtheunitconsumptionqis: N=KNq2/3   WhereNisthenumberofslits;   KN-afactorrelatedtotheperformanceoftheexplosiveandthecriticalbreakingspeedofthematerial;   q——Unitexplosiveconsumption.   10heightofbreaking;destructionheight   Inordertomakethebuildingunstableandcollapse,theexplosionofthebuildingcarrierisdestroyed.   11minimumdestructionheightminimumdestroyingheight   Inordertomaketheframeunstable,itisnecessarytofirstbreaktheconcreteofacertainheightofthecolumnandbreakitawayfromthesteelframe. Whenthestaticpressureloadonthetopoftheskeletonexceedsitsultimatecompressivestrengthorreachesthecriticalloadofinstability,thecolumncollapsesandcollapses. Thecolumnfailureheightthatsatisfiestheaboveconditionsiscalledtheminimumdamageheighthmin. Theload-bearingcolumndamageheighthisgreaterthantheminimumdamageheight.   12Demolitionblastingdesigncontentdesigncontentofdemolitionblasting   Theblastingdesigncanbedividedintothreestages:feasibilitystudy,technicaldesignandconstructiondrawingdesign. ClassAdemolitionblastingshouldbecarriedoutinstrictaccordancewiththeabovethreestages. Bandcdemolitionblastingcancombinefeasibilitystudyandtechnicaldesignonce.   13demolitionblastingdesignreviewofdemolitionblasting   ThedemolitionblastingdesignofGradeA,GradeBandGradeCshallbesubjecttotheapprovaloftherelevantdepartmentsandshallnotbecommencedwithoutapproval.   14singleholepatternarrangementformholepatternofbuildinginfrastructureblastingdemolition   Thearrangementoftheblastholesisspecificallydeterminedaccordingtotheshape,positionandstructuralcharacteristicsoftheblastingbody.Verticalholesorhorizontalholesaregenerallyused(verticalholesshouldbeconsideredfirst).   Factorsaffectingtheamountofcharge;factorsdeterminingcharge;   Therearemanyfactorsaffectingtheamountofcharge,including:1)theperformanceofexplosives;2)thenatureofthematerialbeingexploded;3)theblastingcond
Accord Group's important scientific and technological achievements declaration project completed expert appraisal
Accord Group's important scientific and technological achievements declaration project completed expert appraisal
SecuritiesTimesNetworkNewsOnJuly30th,YahuaGroupcompletedtheexpertappraisaloftheChinaEngineeringBlastingIndustryAssociationinthescientificandtechnologicalachievementsdeclarationproject"YahuaDigitalElectronicDetonatorTechnologyandApplication"inChengdu.   Thewell-knownsevenexpertsfromthedomesticcivilexplosionindustryformedtheappraisalcommittee.WangXuguang,academicianoftheChineseAcademyofEngineering,wasappointedasthedirectoroftheappraisalcommittee.ZhengWei,chairmanoftheYahuaGroup,GaoXin,presidentandvicepresidentLiangYuanqiangattendedtheappraisalmeeting.   Yahuadigitalelectronicdetonatortechnologyfromthechipcircuitdesign,packaging,production,testinganddetonationsystemdesignareindependentintellectualpropertyrights,theuseofintegratedignitioncomponentstoreplacethetraditionalhotbridgewiremedicine,comprehensivelyandsystematicallyenhancethedigitalelectronicdetonatortechnologyReliability. Atthesametime,thedigitalelectronicdetonatordetonationsystemdevelopedbyYahuahasadoptedtheAPPpushdetonationterminalmodetorealizetherapidsettingandoptimizationdesignofdifferentdelayschemesforengineeringblasting.   TheparticipatingexpertsreviewedtherelevantmaterialsandlistenedtothereportoftheYahuaGroupprojectteam.Afterquestioninganddiscussion,theyfullyaffirmedthetechnicalresearchanddevelopmentachievementsoftheYahuaDigitalElectronicDetonatorintermsofquasi-explosivenessandeaseofoperation.YahuaDigitalElectronicDetonatorhasmadehighpraiseforitshighsafety,highquasi-explosionrate,convenientoperationandeconomiccostofblasting.IthassincerelypraisedtheexplorationandeffectivenessofAccordtopromotenewproductsandtechnologiesintheindustry.ContinuedencouragementandunanimouslybelievethatthetechnicaldevelopmentandapplicationofthedigitalelectronicdetonatorbyAccordBlastinghasadomesticleadinglevelandreachedtheinternationallevel. (Source:ChinaBlastingNetwork)
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SecuritiesTimesNetworkNewsOnJuly30th,YahuaGroupcompletedtheexpertappraisaloftheChinaEngineeringBlastingIndustryAssociationinthescientificandtechnologicalachievementsdeclarationproject"YahuaDigitalElectronicDetonatorTechnologyandApplication"inChengdu.   Thewell-knownsevenexpertsfromthedomesticcivilexplosionindustryformedtheappraisalcommittee.WangXuguang,academicianoftheChineseAcademyofEngineering,wasappointedasthedirectoroftheappraisalcommittee.ZhengWei,chairmanoftheYahuaGroup,GaoXin,presidentandvicepresidentLiangYuanqiangattendedtheappraisalmeeting.   Yahuadigitalelectronicdetonatortechnologyfromthechipcircuitdesign,packaging,production,testinganddetonationsystemdesignareindependentintellectualpropertyrights,theuseofintegratedignitioncomponentstoreplacethetraditionalhotbridgewiremedicine,comprehensivelyandsystematicallyenhancethedigitalelectronicdetonatortechnologyReliability. Atthesametime,thedigitalelectronicdetonatordetonationsystemdevelopedbyYahuahasadoptedtheAPPpushdetonationterminalmodetorealizetherapidsettingandoptimizationdesignofdifferentdelayschemesforengineeringblasting.   TheparticipatingexpertsreviewedtherelevantmaterialsandlistenedtothereportoftheYahuaGroupprojectteam.Afterquestioninganddiscussion,theyfullyaffirmedthetechnicalresearchanddevelopmentachievementsoftheYahuaDigitalElectronicDetonatorintermsofquasi-explosivenessandeaseofoperation.YahuaDigitalElectronicDetonatorhasmadehighpraiseforitshighsafety,highquasi-explosionrate,convenientoperationandeconomiccostofblasting.IthassincerelypraisedtheexplorationandeffectivenessofAccordtopromotenewproductsandtechnologiesintheindustry.ContinuedencouragementandunanimouslybelievethatthetechnicaldevelopmentandapplicationofthedigitalelectronicdetonatorbyAccordBlastinghasadomesticleadinglevelandreachedtheinternationallevel. (Source:ChinaBlastingNetwork)
Demolition and blasting of buildings (structures)
Demolition and blasting of buildings (structures)
Time of issue : 2019-05-30 16:40:00
01columnaryprismialobject Itreferstoacomponentthatisalwayslargerinsizethantheothertwodimensions. Suchasbeams,columns,etc. 02blockblockobject Astructureinwhichthethree-waysizeisgenerallylargeiscalledablock. Suchasfoundation,pierandsoon.   03thinwallstructure Structuresthatarealwaysmuchsmallerinsizethantheothertwo-waydimensions,suchaswalls,floors,andthelike. 04alldemolitionblastcleandemolishingblast Alldemolitionblastingrequiresthatalltheexplodedbodiesbebroken. Ifthemachineisshipped,theblocksizemaybeappropriatelylarger;ifmanualslagisused,thebrokenblocksizeshouldnotbetoolarge. 05cuttingandblastingjoint-cuttingblast 1)Cuttingandblastingaredividedintotwosituations,oneistodisassemblethecomponent,theotheristoremoveapartofthecomponent,retainapart,andtheretainedpartisnotdestroyed,andmustusepre-crackingorsmoothblasting. 2)Inengineering,theplane-symmetriclong-shapedshapedenergypackismainlyusedforcuttingmetalsheetsandpipes,anditisapromisingprocessforcuttinghullsteelsheets. 06Principleofcuttingandblastingprincipleofjoint-cuttingblast Thecuttingblastingmethodusestheblastingmethodtoformacrackinthedirectionoftheconnectionoftheblasthole,soastoachievethepurposeofremovingapartoftheretainingpart. Accordingtotherockblastingmechanism,whentheexplosiveisexplodedinsidetherock,itisdividedintothecrushingzone,thefracturezoneandthevibrationzoneaccordingtothedegreeofrockdamage. Theprincipleofcuttingandblastingistoeliminatethecrushingzoneandcontrolthecrackzone. 07presplitblasting Pre-crackingblastingistoarrangearowofpre-crackingholesalongthecuttingjoint.Afterthefirstdetonation,apre-crackisformedalongthepre-crackinghole,andthenthenon-retainedpartisblastedanddismantled. Duetothepre-crack,theretainedpartneedstobeprotected. 08smoothwallblasting Thedifferencebetweensmoothcutblastingandpre-splittingblastingisthatthelightfaceisfinallydetonated.Itisnotonlyresponsiblefortheformationofcracks,butalsoforthecrushingofconcreteinfrontofthelightface. 09thin-wallstructuredemolitionblastingofthinwallstructure Duetothethinplatestructure,itcanonlybedrilledalongthesmallestdimension.Itscharacteristicsareasfollows:1)Theminimumresistancelineisconsistentorobliquetothedirectionoftheblasthole,andnolateralfreesurfacecanbeused;2)Theblastholeisshallowandtheminimumresistancelineissmall.Therefore,itisveryeasytoproduceflyingstones;3)theblastholeisshallow,theholespacingandtherowspacingaresmall,thusincreasingthedrillingandchargingworkload,andtheblastingcostisincreased. 10floorblastinghardgroundblasting Floorreferstoapavementorsiteconstructedofartificialmaterials. Demolitionofconcretepavedroadsorsitesbyblastingiscalledfloorblasting. 11wideholeblastingofwidegroundblastingofhardground Becausetheconventionalfloorblastingisdifficult,intheengineeringpractice,awide-pitchblastingtechniquedifferentfromconventionalblastingissummarized. Thekeyofwide-pitchfloorblastingisthatthedepthoftheblastholeisequaltothethicknessδofthefloor.Generally,theholespacingoftheblastholeis2to4timesthatofconventionalblasting,andtheconsumptionofunitexplosiveis1.5to2timesthatofconventionalblasting. Demolitionblastingofstandhighbuildings High-risestructuresgenerallyrefertostructureswithlargeratiosofheightanddiameter,suchaschimneysandwatertowers.Theyarecharacterizedbyhighcenterofgravityandsmallsupportarea,sotheyareveryeasytodestabilizeandcollapseorcollapseundergravitytodisintegrate,sothedestructionofthestructureisAsaresultofgravity,blastingisonlyameansofdestabilizingthestructure. 13structureofwatertowers Thewatertowerisdividedintotwotypes:trusstypesupportandcylindricalsupportaccordingtoitssupporttype. Thetrusstypesupportisareinforcedconcretestructure,andtheremovalmethodissimilartothereinforcedconcreteframestructure;thecylindricalsupportisgenerallyabrickstructure,andtheremovalmethodissimilartothechimneyremoval. Thetoptankisgenerallyareinforcedconcretestructure. 14chimneystructurechimneystructure Theshapeofindustrialandcivilchimneysismostlycylindrical,andafewaresquare. Accordingtothematerialsused,itisdividedintotwotypes:reinforcedconcretestructureandbrickstructurechimney. 15chimneyremovalmethodsdemolishingmethodsofchimneys Therearemanytypesofdemolitionmethodscommonlyusedathomeandabroad,whichcanbebroadlysummarizedintothefollowingthreecategories: 1)mechanicalremovalmethod;2)manualremovalmethod;3)blastingremovalmethod. 16directionalblastingdemolitionofslimandhighbuildings Themainprincipleofthedirectionalcollapsedesignistoblastablastinggaplargerthan1/2ofthebottomcircumferenceatthebottomofthedumpingside,therebydestroyingthestabilityofthestructure,resultingintheinstabilityoftheoverallstructureandtheshiftofthecenterofgravity.Theoverturningmomentisformedbytheweight. Forceittocollapseinapredetermineddirectionwithinacertainrange. 17toweringbuildingscollapsedcollapsedblastingdemolitionofslimandhighbuildings Thetallbuildingsarefoldedfirstandthencollapsedtotouchtheground. Foldingcollapsecanbedividedintotwoways:one-wayfoldingcollapseandtwo-wayfoldingcollapse. Itispreferredaccordingtothesizeofthesurroundingarea. 18high-risebui
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01columnaryprismialobject Itreferstoacomponentthatisalwayslargerinsizethantheothertwodimensions. Suchasbeams,columns,etc. 02blockblockobject Astructureinwhichthethree-waysizeisgenerallylargeiscalledablock. Suchasfoundation,pierandsoon.   03thinwallstructure Structuresthatarealwaysmuchsmallerinsizethantheothertwo-waydimensions,suchaswalls,floors,andthelike. 04alldemolitionblastcleandemolishingblast Alldemolitionblastingrequiresthatalltheexplodedbodiesbebroken. Ifthemachineisshipped,theblocksizemaybeappropriatelylarger;ifmanualslagisused,thebrokenblocksizeshouldnotbetoolarge. 05cuttingandblastingjoint-cuttingblast 1)Cuttingandblastingaredividedintotwosituations,oneistodisassemblethecomponent,theotheristoremoveapartofthecomponent,retainapart,andtheretainedpartisnotdestroyed,andmustusepre-crackingorsmoothblasting. 2)Inengineering,theplane-symmetriclong-shapedshapedenergypackismainlyusedforcuttingmetalsheetsandpipes,anditisapromisingprocessforcuttinghullsteelsheets. 06Principleofcuttingandblastingprincipleofjoint-cuttingblast Thecuttingblastingmethodusestheblastingmethodtoformacrackinthedirectionoftheconnectionoftheblasthole,soastoachievethepurposeofremovingapartoftheretainingpart. Accordingtotherockblastingmechanism,whentheexplosiveisexplodedinsidetherock,itisdividedintothecrushingzone,thefracturezoneandthevibrationzoneaccordingtothedegreeofrockdamage. Theprincipleofcuttingandblastingistoeliminatethecrushingzoneandcontrolthecrackzone. 07presplitblasting Pre-crackingblastingistoarrangearowofpre-crackingholesalongthecuttingjoint.Afterthefirstdetonation,apre-crackisformedalongthepre-crackinghole,andthenthenon-retainedpartisblastedanddismantled. Duetothepre-crack,theretainedpartneedstobeprotected. 08smoothwallblasting Thedifferencebetweensmoothcutblastingandpre-splittingblastingisthatthelightfaceisfinallydetonated.Itisnotonlyresponsiblefortheformationofcracks,butalsoforthecrushingofconcreteinfrontofthelightface. 09thin-wallstructuredemolitionblastingofthinwallstructure Duetothethinplatestructure,itcanonlybedrilledalongthesmallestdimension.Itscharacteristicsareasfollows:1)Theminimumresistancelineisconsistentorobliquetothedirectionoftheblasthole,andnolateralfreesurfacecanbeused;2)Theblastholeisshallowandtheminimumresistancelineissmall.Therefore,itisveryeasytoproduceflyingstones;3)theblastholeisshallow,theholespacingandtherowspacingaresmall,thusincreasingthedrillingandchargingworkload,andtheblastingcostisincreased. 10floorblastinghardgroundblasting Floorreferstoapavementorsiteconstructedofartificialmaterials. Demolitionofconcretepavedroadsorsitesbyblastingiscalledfloorblasting. 11wideholeblastingofwidegroundblastingofhardground Becausetheconventionalfloorblastingisdifficult,intheengineeringpractice,awide-pitchblastingtechniquedifferentfromconventionalblastingissummarized. Thekeyofwide-pitchfloorblastingisthatthedepthoftheblastholeisequaltothethicknessδofthefloor.Generally,theholespacingoftheblastholeis2to4timesthatofconventionalblasting,andtheconsumptionofunitexplosiveis1.5to2timesthatofconventionalblasting. Demolitionblastingofstandhighbuildings High-risestructuresgenerallyrefertostructureswithlargeratiosofheightanddiameter,suchaschimneysandwatertowers.Theyarecharacterizedbyhighcenterofgravityandsmallsupportarea,sotheyareveryeasytodestabilizeandcollapseorcollapseundergravitytodisintegrate,sothedestructionofthestructureisAsaresultofgravity,blastingisonlyameansofdestabilizingthestructure. 13structureofwatertowers Thewatertowerisdividedintotwotypes:trusstypesupportandcylindricalsupportaccordingtoitssupporttype. Thetrusstypesupportisareinforcedconcretestructure,andtheremovalmethodissimilartothereinforcedconcreteframestructure;thecylindricalsupportisgenerallyabrickstructure,andtheremovalmethodissimilartothechimneyremoval. Thetoptankisgenerallyareinforcedconcretestructure. 14chimneystructurechimneystructure Theshapeofindustrialandcivilchimneysismostlycylindrical,andafewaresquare. Accordingtothematerialsused,itisdividedintotwotypes:reinforcedconcretestructureandbrickstructurechimney. 15chimneyremovalmethodsdemolishingmethodsofchimneys Therearemanytypesofdemolitionmethodscommonlyusedathomeandabroad,whichcanbebroadlysummarizedintothefollowingthreecategories: 1)mechanicalremovalmethod;2)manualremovalmethod;3)blastingremovalmethod. 16directionalblastingdemolitionofslimandhighbuildings Themainprincipleofthedirectionalcollapsedesignistoblastablastinggaplargerthan1/2ofthebottomcircumferenceatthebottomofthedumpingside,therebydestroyingthestabilityofthestructure,resultingintheinstabilityoftheoverallstructureandtheshiftofthecenterofgravity.Theoverturningmomentisformedbytheweight. Forceittocollapseinapredetermineddirectionwithinacertainrange. 17toweringbuildingscollapsedcollapsedblastingdemolitionofslimandhighbuildings Thetallbuildingsarefoldedfirstandthencollapsedtotouchtheground. Foldingcollapsecanbedividedintotwoways:one-wayfoldingcollapseandtwo-wayfoldingcollapse. Itispreferredaccordingtothesizeofthesurroundingarea. 18high-risebui
Dexing Copper Mine successfully implemented large blasting
Dexing Copper Mine successfully implemented large blasting
InOctober2007,DexingCopperMinesuccessfullyimplementedthelargestblastatthelevelofHuangkeng305inBeishan.ThisblasteffectivelywidenedtheworkingfaceoftheHuangkengminingareaandensuredthestrippingasplanned.Continuedpreparationsfortherelevantprojects.   Theblastingislocatedatthelevelof305inHuangkeng,Beishan,with140effectiveholesandatotaldesignedchargeof90tons.Thefrontoftheexplosionareaisahigh-steepslopewithcomplexoriginallandformsandmanyperipheralequipment.Therefore,theblastinghashighsafetyandtechnicalrequirements.. Thepartyandgovernmentoftheminerequiredtheminingfieldtoorganizetheeliteforcesbasedonpartymembers,doagoodjobinorganizingandcoordinatingallaspects,andensurethesafetyofsurroundingpersonnelandequipmentwhileensuringthequalityofblasting.   Inordertocompletetheblastingtaskefficiently,theblastingtechniciansformulatedtheblastingdesignplaninadvance,strictlygraspedtheon-siteconstructionmanagement,accuratelyloadedthecharge,andmeasuredthefillingheightforeachhole.Forthecomplexityoftheoriginallandform,thefrontholeshrinkagereductionnetworkImprovetheunitconsumptionofexplosivesandensurethequalityofblasting;increasethesurfacenetworktoextendthetime,minimizethevibration,strictlycontrolthescatteringofgravel;usethebottomspacertoensurethebottomplateisflat. Duringtheblasting,thealertpositionisstrictlydeployed,andthepersonnelinthewarningareaareevacuatedintimetoprotectthesurroundingequipmentandcontroltheentryandexitofthevehicle.   Aftercarefulpreparation,theHuangkeng305levelwassuccessfullyblasted,thesurroundingequipmentandpersonnelweresafeandsound,theminingroadwasunimpeded,andtheblastingwasacompletesuccess.   (ZhangFumin)
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InOctober2007,DexingCopperMinesuccessfullyimplementedthelargestblastatthelevelofHuangkeng305inBeishan.ThisblasteffectivelywidenedtheworkingfaceoftheHuangkengminingareaandensuredthestrippingasplanned.Continuedpreparationsfortherelevantprojects.   Theblastingislocatedatthelevelof305inHuangkeng,Beishan,with140effectiveholesandatotaldesignedchargeof90tons.Thefrontoftheexplosionareaisahigh-steepslopewithcomplexoriginallandformsandmanyperipheralequipment.Therefore,theblastinghashighsafetyandtechnicalrequirements.. Thepartyandgovernmentoftheminerequiredtheminingfieldtoorganizetheeliteforcesbasedonpartymembers,doagoodjobinorganizingandcoordinatingallaspects,andensurethesafetyofsurroundingpersonnelandequipmentwhileensuringthequalityofblasting.   Inordertocompletetheblastingtaskefficiently,theblastingtechniciansformulatedtheblastingdesignplaninadvance,strictlygraspedtheon-siteconstructionmanagement,accuratelyloadedthecharge,andmeasuredthefillingheightforeachhole.Forthecomplexityoftheoriginallandform,thefrontholeshrinkagereductionnetworkImprovetheunitconsumptionofexplosivesandensurethequalityofblasting;increasethesurfacenetworktoextendthetime,minimizethevibration,strictlycontrolthescatteringofgravel;usethebottomspacertoensurethebottomplateisflat. Duringtheblasting,thealertpositionisstrictlydeployed,andthepersonnelinthewarningareaareevacuatedintimetoprotectthesurroundingequipmentandcontroltheentryandexitofthevehicle.   Aftercarefulpreparation,theHuangkeng305levelwassuccessfullyblasted,thesurroundingequipmentandpersonnelweresafeandsound,theminingroadwasunimpeded,andtheblastingwasacompletesuccess.   (ZhangFumin)
The demolition blasting of the 500,000-ton shipyard cofferdam in Zhoushan Golden Bay, Zhejiang Province was a complete success.
The demolition blasting of the 500,000-ton shipyard cofferdam in Zhoushan Golden Bay, Zhejiang Province was a complete success.
ZhejiangZhoushanGoldenGulfShipbuildingCo.,Ltd.LushanXiancaotanRepairShipbuildingBaseNo.5islocatedonthewestbankofXiaochangTushan,ChangtuTown,DaishanCounty,ZhejiangProvince,eastofLushanWaterway. Thesizeofthedockis510m(length)×120m(width)×14.4m(deep),whichisthelargestdockcurrentlyunderconstructioninChina. Thedockcofferdamhasatotallengthof122metersandatotalvolumeof55,000cubicmeters. Thecofferdamisacompositecofferdam.Theupperparthasriprap,pottingstoneandbuttressretainingwall.Undertheretainingwall,thereisasteelpipecolumnwithaholediameterof850mm,aspacingof1mandalengthof8-17m.Thedockpierandthecofferdamareintegratedintoone.Theminimumdistancebetweenthebottomplateandthecofferdamislessthan1m,andtherearealargenumberofsteelpipessupportedatbothendsofthecofferdam. Thestructureofthecofferdamandthesurroundingenvironmentareverycomplicated,andtheconstructionperiodistightanddifficult.   Astheship'scofferdamblastingisrareinthecountry,ZhejiangDachangBlastingEngineeringCo.,Ltd.,asadesignandconstructionunit,invitedHuoYongji,ZhangZhengyu,LiuHonggangandotherfamousblastingexpertstodemonstratetheplanseveraltimesduringthedesignstageoftheblastingscheme.Theblastingdesignplanwasexpert.Fullyaffirmed. TheblastwasidentifiedasaClassAdemolitionblast.   Theblastingdemolitionofthecofferdamiscarriedoutwithagentlyinclinedhorizontalhole,whichisdividedinto260sections.Themaximumdepthofthemainblastingholeis38meters,and52tonsofexplosivesareused.Aftertheexplosion,variousmonitoringindicatorsshowthattheblastingseismicwaveandflyingstonearecompletelycontrolledwithinthedesignallowablerange.Within.   Aftertheexplosion,thedockdoorwasclosedsmoothlyandnoshallowspotswerefound. Afewdayslater,thedredginginthedockwascompleted,thefacilitiesinthedocksuchasthepumphousewereintact,andthedockwasdeliveredforuseafteracceptance.Thismarkedthesuccessfulcompletionofthedemolitionblastingofthedockcofferdam.   Thedemolitionandblastingoftheship'scofferdamhascreatedthelargestandmostcomplicatedstructureofthesametypeofcofferdaminChina.   CCTV,ZhejiangTVandothernewsmediareportedonthis.   (GuanZhiQian)
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ZhejiangZhoushanGoldenGulfShipbuildingCo.,Ltd.LushanXiancaotanRepairShipbuildingBaseNo.5islocatedonthewestbankofXiaochangTushan,ChangtuTown,DaishanCounty,ZhejiangProvince,eastofLushanWaterway. Thesizeofthedockis510m(length)×120m(width)×14.4m(deep),whichisthelargestdockcurrentlyunderconstructioninChina. Thedockcofferdamhasatotallengthof122metersandatotalvolumeof55,000cubicmeters. Thecofferdamisacompositecofferdam.Theupperparthasriprap,pottingstoneandbuttressretainingwall.Undertheretainingwall,thereisasteelpipecolumnwithaholediameterof850mm,aspacingof1mandalengthof8-17m.Thedockpierandthecofferdamareintegratedintoone.Theminimumdistancebetweenthebottomplateandthecofferdamislessthan1m,andtherearealargenumberofsteelpipessupportedatbothendsofthecofferdam. Thestructureofthecofferdamandthesurroundingenvironmentareverycomplicated,andtheconstructionperiodistightanddifficult.   Astheship'scofferdamblastingisrareinthecountry,ZhejiangDachangBlastingEngineeringCo.,Ltd.,asadesignandconstructionunit,invitedHuoYongji,ZhangZhengyu,LiuHonggangandotherfamousblastingexpertstodemonstratetheplanseveraltimesduringthedesignstageoftheblastingscheme.Theblastingdesignplanwasexpert.Fullyaffirmed. TheblastwasidentifiedasaClassAdemolitionblast.   Theblastingdemolitionofthecofferdamiscarriedoutwithagentlyinclinedhorizontalhole,whichisdividedinto260sections.Themaximumdepthofthemainblastingholeis38meters,and52tonsofexplosivesareused.Aftertheexplosion,variousmonitoringindicatorsshowthattheblastingseismicwaveandflyingstonearecompletelycontrolledwithinthedesignallowablerange.Within.   Aftertheexplosion,thedockdoorwasclosedsmoothlyandnoshallowspotswerefound. Afewdayslater,thedredginginthedockwascompleted,thefacilitiesinthedocksuchasthepumphousewereintact,andthedockwasdeliveredforuseafteracceptance.Thismarkedthesuccessfulcompletionofthedemolitionblastingofthedockcofferdam.   Thedemolitionandblastingoftheship'scofferdamhascreatedthelargestandmostcomplicatedstructureofthesametypeofcofferdaminChina.   CCTV,ZhejiangTVandothernewsmediareportedonthis.   (GuanZhiQian)
The Engineering Engineering College successfully controlled the blasting demolition of the highest reinforced concrete chimney in China.
The Engineering Engineering College successfully controlled the blasting demolition of the highest reinforced concrete chimney in China.
OnOctober30,2007,theEngineeringCollegeofPLAUniversityofScienceandTechnologysuccessfullyblasteda180mhigh-risereinforcedconcretechimneyattheNanjingThermalPowerPlant.ThechimneyisthehighestchimneyinChina.   Environment:Thechimneyblastingenvironmentiscomplex.Thesouthsideofthe180mhighchimneyis95mawayfromthefactory-ownedtraintrack,170mawayfromthesouthoftherailwayplant;thewestsideis155mawayfromHuanengPowerPlant,theeastsideis161mawayfromthefactorywall,and178mawayfromthewallwaterplant.Onthenortheastside,theoldofficebuildingtobedemolishedbythepowerplantis178maway,andthenearestresidentbuildingis182mawayfromthewall.   Structure:Theouterradiusofthebottomofthechimneyis7.980m,theinnerradiusis7.560m,thewallthicknessis0.42m;theouterouterradiusis2.580m,theinnerradiusis2.420m,thewallthicknessis0.20m;thechimneylineris0.24mthick,andtheperliteinsulationlayeris0.10m. Thereisonechimneyflue,thebottomoftheflueis5mfromtheground,theflueis8.4mhigh(thereinforcementisdenseintherangeof8.4~12.5m,thereinforcementisgraduallynormalin12.5m),themouthwidthis4.8m;theupperedgeoftheflueItis13.4mabovetheground.Becausethechimneyisinvariablesectionintherangeof21m~25mhigh,thethicknessofthechimneywallof25m~32misuniform. The0~55melevationconcreteisC30,the55~130melevationconcreteisC25,andthe130melevationconcreteisC20. Thevolumeofconcreteandliningofthebarrelis2217m3,thevolumeoftheinsulationlayeris61.59m3,andthetotalmassofthechimneyisabout5542T.   Incision:Accordingtocomputersimulation,thechimneyneedstomeettheinstantaneoussupportrequirementofthechimneyretentionpartintheinflowofmorethan10mintheflue.Therefore,thepositionofthechimneyincisionisselectedfrom25.0mto28.0m. Fortheconvenienceofwork,setupaerialworkscaffolding.   Backward:Aslongasthecollapsedsiteis178mawayfromtheoldofficebuildinginthenortheastdirection,thechimneyiscutatahighpositionof25-28m.Theactuallandinglengthofthechimneyisabout155m,andthelandinglengthbasicallymeetstherequirements.   Measures:180mchimneycollapsedirection,usingcoalashtoaccumulateseveraldamsevery25m,thelengthofeachdamis155m,130m,105m,80m,55m;thedambodyis2mwideandthewidthiswide4m,damlength40m,pileheight2m,usethepreparationbagtofillthecoalashatthetopofthedamandtiethemouth,laying6layers,thetotalheightis3m,theflatlandbetweeneachdamispavedwithcoalashordrysoil,thickness0.5m;another6mhighanti-shockwallispileduponbothsidesoftheoldofficebuilding;thechimneyisturnedupsidedowntoliftafew3mdeepdampinggroovestoformathree-sidedditchdamping. Andoutsidethethree-sideddampinggroove,usethesteelpipeframetohangthebamboofencetohangthenet,andsetupasplash-proofwallwithaheightof15m.   Construction:ProjectDepartmentofEngineeringEngineeringCollegeofPLAUniversityofScienceandTechnology,after25daysofcarefulconstruction(5daysforscaffolding,8daysforperforationconstruction,6daysforpre-treatment,1dayforpre-treatmentblasting,andstackingpreventionwithperforationandpre-treatment)Thewallwassplashedfor15days,thechargeprotectionwas2days,thehigh-altitudescaffoldingwasremovedfor2days,andthechimneyblastingwascarriedoutfor1day.Theblastingwasverysuccessful.   Effect:Afterthechimneyblasting,thechimneysalllandedat15.924seconds.Thecenterlineofthelandingisbasicallycoincidentwiththecenterlineofthewholestation.Thedeviationis1.5degreestotheleft(thechimneyisslightlytiltedtotheleftwhenitis120mormore)   Theseismicdataattheresidentialwallonthenortheastsideoftheblastingarea(182mfromtherootofthechimneyand30mfromthetopofthechimney)areasfollows:   Intheverticaldirection,themaximumvalueofthevibrationvelocityintheverticaldirectionis0.2448cm/s;   At8seconds,theincisioncylinderfelltotheground,andtheverticalvibrationvelocitywas0.04cm/s.   At11.68seconds,thebarrelbodytouchedthegroundoneafteranother,andtheverticalvibrationspeedwas0.191cm/s.   At15.924seconds,thetopofthechimneyiscompletedandthewaveformbecomesastraightline.   Safety:Afterblasting,afteron-siteinspection,thefrontandmiddlesectionsofthechimneyblockwerebroken,thebacksectionwasflattened,thedamwassqueezedtoformacleargap,thesandwasextrudedtobothsides,andthesandbagswereindividuallythrowntothegroundof15m,withasmallamountofsand.Splashedtothewalloftheoldofficebuildingat26meters(thebuildingwasoriginallydemolished,thechimneywasblasted,thebuildingwasquicklyremoved)butnosplashingconcretepieceswereseen20metersaway.   Residentsnearthe200-meterwarninglinereportedthattheblastingnoisewasnotlargeandthevibrationwasnotobvious.Thehousingclosesttothechimneyhead30mwaswitnessedbytheresidentsoftheneighborhoodcommittee,theengineersoftheMinistryandtheownerofthehousehold.Threebeerbottleswereinvertedonthebed,onthetableandontheground.Thedoorwasevacuatedbeforetheblasting.Aftertheblasting,thethreepartiesjointlyopenedthedooroftheoccupant.Threebeerbottleswereinvertedandthedirectoroftheneighborhoodcommitteetookthelead.Theblastwassuccessfullycarriedout.Veryhighevaluation.   Thedustisnotbig. Duetothe2~3windsofthesoutheastwindduringtheblasting,andthelightraininthefirst12hours,theairandthegroundaremoist,andthesmokegeneratedduringtheblastingisbasicallyscatteredinthesiteforabout5min
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OnOctober30,2007,theEngineeringCollegeofPLAUniversityofScienceandTechnologysuccessfullyblasteda180mhigh-risereinforcedconcretechimneyattheNanjingThermalPowerPlant.ThechimneyisthehighestchimneyinChina.   Environment:Thechimneyblastingenvironmentiscomplex.Thesouthsideofthe180mhighchimneyis95mawayfromthefactory-ownedtraintrack,170mawayfromthesouthoftherailwayplant;thewestsideis155mawayfromHuanengPowerPlant,theeastsideis161mawayfromthefactorywall,and178mawayfromthewallwaterplant.Onthenortheastside,theoldofficebuildingtobedemolishedbythepowerplantis178maway,andthenearestresidentbuildingis182mawayfromthewall.   Structure:Theouterradiusofthebottomofthechimneyis7.980m,theinnerradiusis7.560m,thewallthicknessis0.42m;theouterouterradiusis2.580m,theinnerradiusis2.420m,thewallthicknessis0.20m;thechimneylineris0.24mthick,andtheperliteinsulationlayeris0.10m. Thereisonechimneyflue,thebottomoftheflueis5mfromtheground,theflueis8.4mhigh(thereinforcementisdenseintherangeof8.4~12.5m,thereinforcementisgraduallynormalin12.5m),themouthwidthis4.8m;theupperedgeoftheflueItis13.4mabovetheground.Becausethechimneyisinvariablesectionintherangeof21m~25mhigh,thethicknessofthechimneywallof25m~32misuniform. The0~55melevationconcreteisC30,the55~130melevationconcreteisC25,andthe130melevationconcreteisC20. Thevolumeofconcreteandliningofthebarrelis2217m3,thevolumeoftheinsulationlayeris61.59m3,andthetotalmassofthechimneyisabout5542T.   Incision:Accordingtocomputersimulation,thechimneyneedstomeettheinstantaneoussupportrequirementofthechimneyretentionpartintheinflowofmorethan10mintheflue.Therefore,thepositionofthechimneyincisionisselectedfrom25.0mto28.0m. Fortheconvenienceofwork,setupaerialworkscaffolding.   Backward:Aslongasthecollapsedsiteis178mawayfromtheoldofficebuildinginthenortheastdirection,thechimneyiscutatahighpositionof25-28m.Theactuallandinglengthofthechimneyisabout155m,andthelandinglengthbasicallymeetstherequirements.   Measures:180mchimneycollapsedirection,usingcoalashtoaccumulateseveraldamsevery25m,thelengthofeachdamis155m,130m,105m,80m,55m;thedambodyis2mwideandthewidthiswide4m,damlength40m,pileheight2m,usethepreparationbagtofillthecoalashatthetopofthedamandtiethemouth,laying6layers,thetotalheightis3m,theflatlandbetweeneachdamispavedwithcoalashordrysoil,thickness0.5m;another6mhighanti-shockwallispileduponbothsidesoftheoldofficebuilding;thechimneyisturnedupsidedowntoliftafew3mdeepdampinggroovestoformathree-sidedditchdamping. Andoutsidethethree-sideddampinggroove,usethesteelpipeframetohangthebamboofencetohangthenet,andsetupasplash-proofwallwithaheightof15m.   Construction:ProjectDepartmentofEngineeringEngineeringCollegeofPLAUniversityofScienceandTechnology,after25daysofcarefulconstruction(5daysforscaffolding,8daysforperforationconstruction,6daysforpre-treatment,1dayforpre-treatmentblasting,andstackingpreventionwithperforationandpre-treatment)Thewallwassplashedfor15days,thechargeprotectionwas2days,thehigh-altitudescaffoldingwasremovedfor2days,andthechimneyblastingwascarriedoutfor1day.Theblastingwasverysuccessful.   Effect:Afterthechimneyblasting,thechimneysalllandedat15.924seconds.Thecenterlineofthelandingisbasicallycoincidentwiththecenterlineofthewholestation.Thedeviationis1.5degreestotheleft(thechimneyisslightlytiltedtotheleftwhenitis120mormore)   Theseismicdataattheresidentialwallonthenortheastsideoftheblastingarea(182mfromtherootofthechimneyand30mfromthetopofthechimney)areasfollows:   Intheverticaldirection,themaximumvalueofthevibrationvelocityintheverticaldirectionis0.2448cm/s;   At8seconds,theincisioncylinderfelltotheground,andtheverticalvibrationvelocitywas0.04cm/s.   At11.68seconds,thebarrelbodytouchedthegroundoneafteranother,andtheverticalvibrationspeedwas0.191cm/s.   At15.924seconds,thetopofthechimneyiscompletedandthewaveformbecomesastraightline.   Safety:Afterblasting,afteron-siteinspection,thefrontandmiddlesectionsofthechimneyblockwerebroken,thebacksectionwasflattened,thedamwassqueezedtoformacleargap,thesandwasextrudedtobothsides,andthesandbagswereindividuallythrowntothegroundof15m,withasmallamountofsand.Splashedtothewalloftheoldofficebuildingat26meters(thebuildingwasoriginallydemolished,thechimneywasblasted,thebuildingwasquicklyremoved)butnosplashingconcretepieceswereseen20metersaway.   Residentsnearthe200-meterwarninglinereportedthattheblastingnoisewasnotlargeandthevibrationwasnotobvious.Thehousingclosesttothechimneyhead30mwaswitnessedbytheresidentsoftheneighborhoodcommittee,theengineersoftheMinistryandtheownerofthehousehold.Threebeerbottleswereinvertedonthebed,onthetableandontheground.Thedoorwasevacuatedbeforetheblasting.Aftertheblasting,thethreepartiesjointlyopenedthedooroftheoccupant.Threebeerbottleswereinvertedandthedirectoroftheneighborhoodcommitteetookthelead.Theblastwassuccessfullycarriedout.Veryhighevaluation.   Thedustisnotbig. Duetothe2~3windsofthesoutheastwindduringtheblasting,andthelightraininthefirst12hours,theairandthegroundaremoist,andthesmokegeneratedduringtheblastingisbasicallyscatteredinthesiteforabout5min
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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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