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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:Center news
  • Author:
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  • Time of issue:2019-05-08 17:59
  • Views:3

(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.     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.   3.2blastholeparametersandsingleholedose   Intheblastingheightrange,theload-bearingcolumns(walls)areallclothed,andthecolumnswithsquaresectionsareinprinciplearrangedwithholesforeasydrillingandcharging,andthedirectionoftheholesmustbeavoided. TheporenetworkparametersofthemainstructureareshowninTable1.     2Overallplanforblastingdemolitiondesign   2.1Requirementsfortheprogram   (1)Explodeatanextraordinaryconstructionspeedbeforethebuildingmaybenaturallydumped. ItisexpectedthatthebuildingwillreachthecriticalstateofnaturaldumpingonDecember28,1995,anditispossibletosuddenlyacceleratethedumpingbeforethistime. Whenformulatingaplan,itmustbeconsideredasthefirstfactorinwinningtimeandsupernormalconstruction.   (2)Reliabletechnologyandeffectivemeasurestoensurethesafetyofpeople,propertyandbuildingsaround. Thebuildingissurroundedbyfactories,shopsandresidentialbuildings.Whendeterminingtheplan,itmustbeensuredthattheflyingstones,shockwavesandvibrationsduringtheblastingdonotcausedamageandinfluenceonthesurroundings.   (3)Accuratelyselectthefloortoovercomethedifficultyofnarrowingthecollapsedsiteandinsufficientdumpingdistance.Theheightabovethegroundofthebuildingis56m.Accordingtotheenvironmentalconditionsoftheexplosionarea,itcanonlybedirectedtothenorthwestdirection. Whendeterminingtheplan,thebestblastingfloormustbeselectedtosolvetheproblemofdumpingdistance;theheightoftheconstructionfloorshouldbehandledwell,andtheconstructioncanbesafelyevacuatedwhenthereisasuddenchange.   2.2Prog

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.     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.   3.2blastholeparametersandsingleholedose   Intheblastingheightrange,theload-bearingcolumns(walls)areallclothed,andthecolumnswithsquaresectionsareinprinciplearrangedwithholesforeasydrillingandcharging,andthedirectionoftheholesmustbeavoided. TheporenetworkparametersofthemainstructureareshowninTable1.     2Overallplanforblastingdemolitiondesign   2.1Requirementsfortheprogram   (1)Explodeatanextraordinaryconstructionspeedbeforethebuildingmaybenaturallydumped. ItisexpectedthatthebuildingwillreachthecriticalstateofnaturaldumpingonDecember28,1995,anditispossibletosuddenlyacceleratethedumpingbeforethistime. Whenformulatingaplan,itmustbeconsideredasthefirstfactorinwinningtimeandsupernormalconstruction.   (2)Reliabletechnologyandeffectivemeasurestoensurethesafetyofpeople,propertyandbuildingsaround. Thebuildingissurroundedbyfactories,shopsandresidentialbuildings.Whendeterminingtheplan,itmustbeensuredthattheflyingstones,shockwavesandvibrationsduringtheblastingdonotcausedamageandinfluenceonthesurroundings.   (3)Accuratelyselectthefloortoovercomethedifficultyofnarrowingthecollapsedsiteandinsufficientdumpingdistance.Theheightabovethegroundofthebuildingis56m.Accordingtotheenvironmentalconditionsoftheexplosionarea,itcanonlybedirectedtothenorthwestdirection. Whendeterminingtheplan,thebestblastingfloormustbeselectedtosolvetheproblemofdumpingdistance;theheightoftheconstructionfloorshouldbehandledwell,andtheconstructioncanbesafelyevacuatedwhenthereisasuddenchange.   2.2Prog

  • Categories:Center news
  • Author:
  • Origin:
  • Time of issue:2019-05-08 17:59
  • Views:3
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

 

  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.

 

 

北京崇文区文化馆爆破拆除工程

 

  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.

北京崇文区文化馆爆破拆除工程

 

  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

 

   2 Overall plan for blasting demolition design

 

  2.1 Requirements for the program

 

  (1) Explode at an extraordinary construction speed before the building may be naturally dumped. It is expected that the building will reach the critical state of natural dumping on December 28, 1995, and it is possible to suddenly accelerate the dumping before this time. When formulating a plan, it must be considered as the first factor in winning time and supernormal construction.

 

  (2) Reliable technology and effective measures to ensure the safety of people, property and buildings around. The building is surrounded by factories, shops and residential buildings. When determining the plan, it must be ensured that the flying stones, shock waves and vibrations during the blasting do not cause damage and influence on the surroundings.

 

  (3) Accurately select the floor to overcome the difficulty of narrowing the collapsed site and insufficient dumping distance. The height above the ground of the building is 56m. According to the environmental conditions of the explosion area, it can only be directed to the northwest direction. When determining the plan, the best blasting floor must be selected to solve the problem of dumping distance; the height of the construction floor should be handled well, and the construction can be safely evacuated when there is a sudden change.

 

  2.2 Program Analysis

 

  The determination of the building blasting plan mainly considers the time, environment, site, construction, safety and other factors, and proposes the following four options:

 

  The first plan: blasting the first to second floors, let the building tilt toward the west while tilting toward the northwest. The advantages of the scheme are: easy to construct, easy to protect, fast construction speed, quick withdrawal of construction workers in case of sudden changes, large aspect ratio of the building body, easy to dump. The disadvantage is that the blasting slag collapses in a large range. After the collapse, the slag will cover the west side of the road surface, causing traffic disruption and roadside pipeline damage, that is, it may interrupt the overhead communication, power supply lines and underground buried gas that are laid parallel to the road. Water pipe.

 

  The second option: blasting the 1st to 2nd floors and the 9th to 11th floors, let the building collapse and then collapse to the west while tilting slightly to the northwest. The advantage of this solution is that the construction site can meet the collapse requirements.The shortcoming is: the construction time is long, it is difficult to guarantee the on-time detonation before December 28, 1995. The folding part of the construction floor is too high, the aspect ratio is small, the drilling air pressure loss is large, the drilling speed is slow, the protection is difficult, and the sudden change When the construction workers did not have time to evacuate.

 

  The third option: blasting the 1st to 2nd floors and the 6th to 8th floors, let the building collapse, and when it collapses to the west, it tilts slightly toward the northwest. The advantage of this scheme is that the construction site can meet the collapse requirements, the aspect ratio of the folded part is greater than 1, and the borehole pressure loss is not large. The disadvantage is that the construction time is long and it is difficult to guarantee that it will detonate on time before December 28, 1995. Although the floor is lower than the second scheme, the protection is still difficult.

 

  The fourth option: make appropriate adjustments on the basis of the third scheme, that is, only blast the 6th to 8th floors, and the 1st and 2nd floors do not blast. The advantage of this solution is that it meets the time requirements to the utmost. The disadvantage is that the 4th to 5th floors will be damaged after the collapse of the building, and the blasting construction of the 1st to 3rd floors will be difficult.

 

  2.3 Implementation plan

 

  Through repeated analysis and comparison of time, site, construction, safety and other factors, weighed the pros and cons, and after expert argumentation, finally decided to adopt the "half west dumping" blasting program, the main contents are:

 

  (1) In order to gain time, only the 6th to 8th floors will be blasted, and the 6th to 18th floors will collapse to the west while tilting to the northwest. The 1st to 5th floors will be 6 to 18 floors. After the slag, the explosion will be carried out.

 

  (2) According to the existing blasting equipment, a hybrid detonation system combining electric detonator and non-electric detonator is adopted, and the inside of the hole is combined with the extension of the hole, and the delay interval between the segment and the segment is 300 to 400 ms.

 

  (3) Use sandbag wall protection to lay parallel to the direction of the dumping to reduce the second vibration.

 

  (4) The load-bearing wall is mainly vertical drilling, supplemented by parallel drilling.

 

  (5) The elevator in the building has a high rigidity, but its own anti-flying stone has good performance and can be completely destroyed when it is exploded.

 

  (6) The 6th to 8th stairwells are externally charged, covered with sandbags, and detonated simultaneously with the same floor.

 

  (7) The last row of load-bearing walls in each building along the dumping direction shall not be detonated to maintain relative stability and accurate dumping direction.

 

  (8) Ensure that the drilling, charging and networking of the sixth floor are completed before the building is dumped naturally. It is in a detonation state and is developed upwards to 8 floors. In the event of a sudden change, it only detonates 6 floors.

 

  3 blasting parameter design

 

  3.1 blasthole arrangement

 

  According to the wall structure and the actual operation, two types of cloth holes are used, namely, a vertical drilling form (A) with the wall and a parallel drilling form (B) with the wall.

 

  Form A: hole spacing a = 25 ~ 30 cm; row spacing b = a; hole depth L = 14 cm.

 

  Form B: hole pitch a = 25 ~ 30 cm; hole depth L = 50 ~ 150 cm.

 

  3.2 Dosage calculation

 

  The single-pore dose is calculated as g=KabH, and different K values ​​are selected according to different parts. The surrounding wall takes K=4000g/m3, the single hole charge q=50g; the partition wall takes k=5000g/m3, and the single hole charge q=50~75g. At the time of charging, 50 g and 75 g were staggered. Take k=6000g/m3 in the elevator and q=75g in single hole. A blasting test was carried out in the elevator part before the explosion, which proved that the above parameters are reasonable.

 

  The total charge of the building is about 360kg.

 

  3.3 Detonating network

 

  According to the structural characteristics of the building, the number of blastholes, the existing blasting equipment and the time constraints, the detonation system combined with the non-electrical millisecond detonating tube and the electric detonator is used, and the hole is combined with the hole extension.

 

  The sixth floor: 3, 5, 8 sections, the delay is 950ms → 1250ms → 2350ms, ∑ △ ≥ 1400ms, all the holes are delayed.

 

  The 7th floor: 4, 5, 8 sections, the delay is 650ms → 1550ms → 2350ms, ∑ △ ≥ 1700ms, delay in all holes.

 

  The 8th floor: 4, 5, 8 sections, the delay is 650ms → 1500ms → 2350ms, ∑ △ ≥ 1700ms, delay in all holes.

 

  The network adopts the form of “parallel-string-string”, that is, the detonating tube is connected with the electric detonator by “one grab” connection. Each tuft tube is detonated with two power generation detonators, and the two detonators are connected in series, then connected in series. Connect to the network.

 

  4 blasting effect

 

  After 72 hours of continuous construction, the building detonated on time at 10 am on December 26, 1995. At the moment of detonation, the building moved down first and then collapsed to the northwest. From the blasting effect:

 

  (1) The dumping direction is basically the same as the design dumping direction;

 

  (2) Shock waves and flying stones do not cause any harm to surrounding buildings;

 

  (3) The secondary vibration is damaged by the sandbag, and the surrounding buildings are intact;

 

  (4) After the collapse of the building, most of the shear walls and beams have been broken and broken, which is beneficial to the slag removal. The whole blasting effect has fully met the design requirements and the intended purpose.v

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 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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