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Blasting Demolition Project of Chongwen District Cultural Center in Beijing

Blasting Demolition Project of Chongwen District Cultural Center in Beijing

  • Categories:Accident case
  • Author:
  • Origin:
  • Time of issue:2019-04-19 17:59
  • Views:2

(Summary description)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(

Blasting Demolition Project of Chongwen District Cultural Center in Beijing

(Summary description)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(

  • Categories:Accident case
  • Author:
  • Origin:
  • Time of issue:2019-04-19 17:59
  • Views:2
Information

Completion time: November 2001

 

  Project location: northwest corner of the intersection of Chongwenmenwai Street and Zhushikou East Street, Beijing

 

  Completion unit: China University of Mining and Technology Beijing Zhongda Blasting Technology Engineering Company

 

  Project host and participants: Liu Dianshu, Wang Shuren, Chen Shoufeng, Wang Shunyu, Gao Quanchen, Du Yulan, Wang Daihua, Wan Lin, Ji Xiaopeng, Li Shenglin

 

  Writer: Liu Dianshu

 

 北京崇文区文化馆爆破拆除工程

 

  1 Project Overview

 

  The proposed Chongwen District Cultural Center in Beijing is a reinforced concrete frame structure with a width of 24m from east to west and a length of 57.2m from north to south. The total construction area is about 8,200m2. The main part (south) has 12 floors above ground and 1 underground floor. The height above the ground is 45.2m. Controlled blasting demolition; three layers above the northern ground (including the mezzanine), with a height of 13.9m, is intended to be mechanically removed after blasting.

 

  The building is located in Chongwen District, Beijing, bordering Chongwenmenwai Street in the east and Zhushikou East Street in the south. It is a main thoroughfare, with dense traffic and pedestrians. The surrounding environment is shown in Figure 1.

 

Guizhou Runde blasting

 

  It should be pointed out that there is a cable corridor on the east side of the cultural museum at a distance of 3.5m from the building, running north-south. There are more than 20 high-voltage cables and communication cables of 250,000-500,000 V. There must be no damage during blasting; Municipal facilities such as brick walls and advertising light boxes at the 3.Om line need to be protected.

 

  2 Controlled blasting scheme

 

  According to the structural characteristics of the building and the environmental conditions, it is an ideal choice to control the southward dumping of the building, but if the collapse direction is south, the underground cable will be threatened during the collapse and accumulation of the building, and It is bound to push down the walls and damage to municipal facilities such as light boxes. Through the analysis and research on the collapse and accumulation of buildings, the building should be controlled to collapse at least 15° west to the west to ensure the safety of surrounding municipal facilities.

 

  Since the structure is symmetrical, the deflection of the building to the southwest 15° direction can only be achieved by the detonation time difference control technique, that is, the building structure is destroyed and disintegrated in the air by controlling the detonation time difference between the rows and the columns. The tendency to produce a south-west collapse, forcing the building to deflect westward during the collapse of the south, is theoretically feasible, and there are plenty of examples of successful applications in engineering. Therefore, the overall scheme of controlled blasting is determined as follows: non-electrical control detonation technology combining hole extension and intra-hole delay, and fully utilizing the control effect of detonation time difference, strictly controlling the detonation sequence of each part, and sequentially blowing up a certain height range Inside the supporting column, a blasting gap is formed at the bottom of the building, and the building disintegrates in a piece by piece under the action of gravity bending moment, so that the torsion deflection of the building is inclined to collapse in the direction of 15° west to the west. Based on engineering experience and structural analysis, the detonation time difference is designed to be 1.0 to 1.5 s.

 

  3 blasting parameter design

 

  3.1 Blasting height

 

  According to structural analysis and overturning mechanics calculation, combined with similar blasting engineering parameters, the designed blasting height is mainly one to two floors above ground. The center column is blasted to the third floor, and the last row blasts only one hole at the bottom of the first layer, forming looseness. Hinge, the first three rows of blasting in the basement section, the last row is retained, and the blasting cut of the center section is shown in Figure 2.

 

Guizhou Runde blasting

 

  3.2 blasthole parameters and single hole dose

 

  In the blasting height range, the load-bearing columns (walls) are all clothed, and the columns with square sections are in principle arranged with holes for easy drilling and charging, and the direction of the holes must be avoided. The pore network parameters of the main structure are shown in Table 1.

 

 北京崇文区文化馆爆破拆除工程

 

 The single hole volume of the blasthole is calculated according to the volume formula: Qi=kabl

 

  Where Qi - single pore dose, kg;

 

  a —— blast hole spacing, m;

 

  b ——The larger section size or wall thickness of the column section, m;

 

  l ——The smaller size of the column section or the wall hole spacing, m;

 

  k ——explosive unit consumption, kg/m3.

 

  The amount of explosives listed in Table 1 is the standard amount of the ground layer. The second to third floors are reduced by 10% to 15%, and the basement portion is increased by 20%.

 

  3.3 Detonation sequence and blasting time difference

 

  In order to ensure the safety of the cable trench on the east side of the building and the surrounding building facilities, the building to be demolished collapses in the south-west direction according to the design. The detonation sequence of the design is shown in Figure 3.

 北京崇文区文化馆爆破拆除工程

 

 

  In order to achieve a smooth deflection, the following technical measures have been taken in the design and engineering implementation:

 

  (1) The two holes at the bottom of the first row of the No. 4 column in the same row are designed to be simultaneously detonated at the same time as the previous section. The purpose is to form a rotating hinge, which is conducive to the tendency of the upper structure to move westward;

 

  (2) The 2nd to 3rd floors of the fourth row of columns (row D) are detonated in the first layer of 2.0s in order to prevent the building from being broken from the upper three floors during the collapse process, resulting in a recoil;

 

  (3) The ground layer of the column El is completely blasted, and the explosion height of the column D4 is reduced, and only the ground layer is blasted. According to the successful experience of a number of large-scale demolition blasting projects, the blasting still uses a four-way connected detonating tube blasting network.

 

  4 Blasting safety and protection

 

  (1) In order to ensure the safety of the cable trench, before the blasting, on the east side of the building, a damping groove with a width of 1.5m and a depth of 3.0m is dug along the wall. Practice has proved that this measure plays an important role in the safety protection of cable trenches.

 

  (2) Strictly control the maximum amount of explosive charge, and control the blasting vibration speed of the surrounding building facilities within the scope specified in the Blasting Safety Regulations (GB6722-1986), and arrange them in the underground cable trench and key parts of the ground. Three blasting vibration monitoring points were used.

 

  (3) The outer wall and window of all the charging parts on the ground are covered with four layers of color strips of four layers of enamel clips. The key parts are protected with 5-6 layers of Jingjing 3 layers of colored strips, and the flying stones generated by the blasting will be used. Control within the explosion zone.

 

  (4) Set up the shelf on the west side of the building, and hang two layers of coloring cloth on the west side of the building to control the secondary splash formed by the impact of the floor impact of the building to ensure the safety of the newly built commercial residential building on the west side.

 

  5 Conclusion

 

  (1) After careful design and careful construction organization, the Chongwen District Cultural Center was blasted at 0:30 on November 18, 2001. After the detonation, the building collapsed according to the design direction. The structure was fully dismantled and stacked, and the stacking height was 5.0-7.0m. . The surrounding buildings and municipal facilities are safe and sound.

 

  (2) From the measurement and analysis of the blasting pile after blasting, the collapse direction of the building is 18°-20° south to west, reaching the pre-explosion design requirement of 15° west to west, indicating the theory of controlling the deflection of the building by using the detonation time difference. The analysis is correct, technical processing and engineering applications are successful, providing valuable experience for future controlled blasting.

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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.   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WuXinxia,​​QuGuangjian,GaoYing,HuangYuewen,LongYuan,YangNianhua,GaoWenxue,ChenQiliangandotherexpertsmadespecialspeeches,GuangzhouZhongboSafetyNetTechnologyCo.,Ltd.,SouthChinaUniversityofTechnologyandYangtzeRiverWaterResourcesCommissionChangjiangAcademyofSciencesandotherunitsontheblastingVibrationremotetesting,calibrationandsystemmanagementweredemonstratedanddemonstratedonsite.  ProfessorWuXinxiafromtheYangtzeRiverScientificResearchInstituteoftheYangtzeRiverWaterResourcesCommission  ProfessorQuGuangjianfromGuangzhouZhongboSafetyNetTechnologyCo.,Ltd.  AssociateProfessorGaoYingfromSouthChinaUniversityofTechnology  SeniorEngineerHuangYangwenfromtheYangtzeRiverScientificResearchInstituteoftheYangtzeRiverWaterResourcesCommittee  ProfessorLongYuanfromthePLAUniversityofScienceandTechnology  ResearcherYangNianhuafromChinaAcademyofRailwaySciences  ProfessorofHighLiterature,BeijingUniversityofTechnology  AssociateProfessorChenQiliangfromGuangzhouZhongboSafetyNetTechnologyCo.,Ltd.   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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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