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Blasting Demolition of a 21-story Full Shear Wall Structure Building

Blasting Demolition of a 21-story Full Shear Wall Structure Building

  • Categories:case study
  • Author:
  • Origin:
  • Time of issue:2019-05-05 15:28
  • Views:3

(Summary description)Completiontime:June2004 ProjectLocation:WuningTown,DongyangCity,ZhejiangProvince Completedunit:ZhejiangJinganBlastingEngineeringCo.,Ltd. Projecthostandparticipants:WangXiaMing,ChengCailin,GuPing,DuZhonglong,HeHuawei ContributedbyChengCailinandDuZhonglong    1ProjectOverview   TheWuningTownGovernmentBuildingofDongyangCityislocatedattheintersectionofRenminRoadandZhenxingRoadinDongyangCity,ZhejiangProvince.Theeastsideisabout18mawayfromRenminRoad,thesouthsideisabout50mawayfromZhenxingRoad,thenorthsideis25mfortheNationalLandBuilding,andthewestis9mforresidentialbuildings.   Thebuildingisdividedintotwoparts,themainbuildingandthepodium.Itfacessouthandisintheshapeofa“sail”. Themainbuildinghas19floorsintheeasthalfand2layersinthewesthalf.Thetotalheightis70.3mandthebuildingareaisaboutl1000m. . Themainbuildingisafullshearwallstructure,withthe"work"shapeshearwallasthemainload-bearingmember,thecontactbeamasthelapjointmember,theeast-westspanplustheelevatorshaftforthesevencolumns,thenorth-southspanplusthecorridorforthethree-span,thewestsideofthemainbuildingTherearedoubleelevatorshaftsandinnerstairs.Therearesingleelevatorshaftsandinnerstairsontheeastside.Theeastandwestsidesofthebuildingareasymmetricalinstructure;themainbuildingisafour-storypodiuminthesouth,northandwest,whichisaframestructure. ThesurroundingenvironmentofthebuildingisshowninFigure1.    2Characteristicsanddifficultiesofthedemolitionproject   (1)Thebuildingtobedemolishedisafullshearwallstructure.Duetotheasymmetricalstructureontheeastandwestsidesofthebuilding,theheightisdifferent,andthecenterofgravityiswestward.Therefore,theopeningstressoftheblastinggapisbalancedtoensuretheaccuracyofthedirectionaldumpingaftertheexplosion.   TheplanestructureofthebuildingisshowninFigure2.  (2)Thebuildingislocatedinthedowntownarea,andtherearemanybuildings(structures)tobeprotected.Itis9mfromthewestofthebuildingand45mfromthesouth.Thereareoverheadpowerlinesandcommunicationlinesonthesouthrevitalizationroad.55m;12montheeastsidehasavarietyofimportantpipelinefacilitiessuchasundergroundcommunicationcables,militaryopticalcables,undergroundcables,etc.,andthereareф600mmcementwatersupplypipesat17montheeastside.   (3)Becausetheconstructionperiodisonly20days,plustheconstructioniscatchingupwiththestudents'collegeentranceexaminationandthemiddleschoolentranceexaminationperiod,itisimpossibletoworkovertimeatnight,whichbringsgreatdifficultytotheconstructionprogress.   3Selectionofblastingdemolitionplan   Accordingtotheon-siteenvironmentalconditionsandthestructuralcharacteristicsofthebuilding,ablastingdemolitionschemewithmultiplegapstothesouthisused.   3.1Blastinggap   Themaximumnotchheightofthelowernotch,theformula:H=Btanф   IntheformulaB-thewidthofthebuilding,B=16.2m;ф-thenotchelevationangle,takeф=41°,tanф=0.87.   ThesurrogatevalueiscalculatedasH=14.1m.   Theheightofthetoppanelofthefourthfloorofthebuildingisjust14.1m,whichmeansthatthefrontrowcanbefrieduptothefourthfloor. Inordertomakethebuildingcollapsesmoothly,theheightoftheelevatorshaftandthestairwellisincreasedbyonelayerhigherthantheheightofthefrontrowofcolumns.   Twoauxiliarygapsareopenedinthe9thto10thfloorsand14thto15thfloorsofthebuilding.TheinternalI-shapedshearwallisalsopre-treatedanddrilledandblasted.TheblastinggapandtheholeareshowninFigure3.   3.2Pretreatmentofshearwall   Themainbuildingisdividedintofrontandreartwo-spanI-shapedshearwalls,thatis,thenorthandsouthspans.Inordertoreducethedrillingandblastingworkload,theintermediatepre-treatmentcanformfourrowsofload-bearingcolumnswithT-shapedends,whichbecomethemainbearingofthemainbuilding.Thecomponentisthendrilledandblasted. Thethreeprinciplesofshearwallpre-cuttingare:1)theprincipleofensuringthesafetyandstabilityofthebuildingbeforeexplosion;2)theprincipleofretainingtheshearwallnode;3)theprincipleofnormalizingthepost-bodyshearwallcolumn.   3.3drillingandblastingparameters   ThebuildingtobeexplodedismainlycarriedbytheI-shapedshearwall.Theblastholesontheshearwallarearrangedintwoways,namelyverticalshallowholes.Inordertoensuretheblastingeffect,theflyingstoneiscontrolled,andthelongitudinaldrillingparalleltotheshearwallisdecided..   Calculationofblastingparameters:theapertureф=38~40mm,theminimumresistancelineisl/2ofthethicknessoftheshearwall,ieW=O.125m,theholespacingδ=(1.5~2.0)W(m),takeδ=20~25cm,theholedepthListhewidthoftheshearwallwallminus25cm,ifthewallwidthexceeds1.5m,youcanentertheholefrombothsidesoftheshearwallsection. Attheelevatorshaft,themaximumholedepthontheshearwallis2.6m,andthecenterlineoftheblastholeisnotmorethan2cmparalleltotheshearwall. Atotalof1,720longitudinalholesarearrangedontheshearwallcolumn,whichisabout2095meters.   Thethin-wallstructureoftheshearwallis1000-1200g/m3forthebottomexplosive.Thesingle-explosionconsumptionofthetwo-layerexplosiveis800g/m3,andtheexplosiveconsumptionoftheuppertwoblastingshearwallsiscontrolledat600g/m3.   4Constructionprocess   4.1Deferredsegmentationanddetonationnetwork   Thenon-electricdetonatorsofMS2,HS2,HS3andHS4aredetonatedintheholeofthe1~4rowofshearholes

Blasting Demolition of a 21-story Full Shear Wall Structure Building

(Summary description)Completiontime:June2004 ProjectLocation:WuningTown,DongyangCity,ZhejiangProvince Completedunit:ZhejiangJinganBlastingEngineeringCo.,Ltd. Projecthostandparticipants:WangXiaMing,ChengCailin,GuPing,DuZhonglong,HeHuawei ContributedbyChengCailinandDuZhonglong    1ProjectOverview   TheWuningTownGovernmentBuildingofDongyangCityislocatedattheintersectionofRenminRoadandZhenxingRoadinDongyangCity,ZhejiangProvince.Theeastsideisabout18mawayfromRenminRoad,thesouthsideisabout50mawayfromZhenxingRoad,thenorthsideis25mfortheNationalLandBuilding,andthewestis9mforresidentialbuildings.   Thebuildingisdividedintotwoparts,themainbuildingandthepodium.Itfacessouthandisintheshapeofa“sail”. Themainbuildinghas19floorsintheeasthalfand2layersinthewesthalf.Thetotalheightis70.3mandthebuildingareaisaboutl1000m. . Themainbuildingisafullshearwallstructure,withthe"work"shapeshearwallasthemainload-bearingmember,thecontactbeamasthelapjointmember,theeast-westspanplustheelevatorshaftforthesevencolumns,thenorth-southspanplusthecorridorforthethree-span,thewestsideofthemainbuildingTherearedoubleelevatorshaftsandinnerstairs.Therearesingleelevatorshaftsandinnerstairsontheeastside.Theeastandwestsidesofthebuildingareasymmetricalinstructure;themainbuildingisafour-storypodiuminthesouth,northandwest,whichisaframestructure. ThesurroundingenvironmentofthebuildingisshowninFigure1.    2Characteristicsanddifficultiesofthedemolitionproject   (1)Thebuildingtobedemolishedisafullshearwallstructure.Duetotheasymmetricalstructureontheeastandwestsidesofthebuilding,theheightisdifferent,andthecenterofgravityiswestward.Therefore,theopeningstressoftheblastinggapisbalancedtoensuretheaccuracyofthedirectionaldumpingaftertheexplosion.   TheplanestructureofthebuildingisshowninFigure2.  (2)Thebuildingislocatedinthedowntownarea,andtherearemanybuildings(structures)tobeprotected.Itis9mfromthewestofthebuildingand45mfromthesouth.Thereareoverheadpowerlinesandcommunicationlinesonthesouthrevitalizationroad.55m;12montheeastsidehasavarietyofimportantpipelinefacilitiessuchasundergroundcommunicationcables,militaryopticalcables,undergroundcables,etc.,andthereareф600mmcementwatersupplypipesat17montheeastside.   (3)Becausetheconstructionperiodisonly20days,plustheconstructioniscatchingupwiththestudents'collegeentranceexaminationandthemiddleschoolentranceexaminationperiod,itisimpossibletoworkovertimeatnight,whichbringsgreatdifficultytotheconstructionprogress.   3Selectionofblastingdemolitionplan   Accordingtotheon-siteenvironmentalconditionsandthestructuralcharacteristicsofthebuilding,ablastingdemolitionschemewithmultiplegapstothesouthisused.   3.1Blastinggap   Themaximumnotchheightofthelowernotch,theformula:H=Btanф   IntheformulaB-thewidthofthebuilding,B=16.2m;ф-thenotchelevationangle,takeф=41°,tanф=0.87.   ThesurrogatevalueiscalculatedasH=14.1m.   Theheightofthetoppanelofthefourthfloorofthebuildingisjust14.1m,whichmeansthatthefrontrowcanbefrieduptothefourthfloor. Inordertomakethebuildingcollapsesmoothly,theheightoftheelevatorshaftandthestairwellisincreasedbyonelayerhigherthantheheightofthefrontrowofcolumns.   Twoauxiliarygapsareopenedinthe9thto10thfloorsand14thto15thfloorsofthebuilding.TheinternalI-shapedshearwallisalsopre-treatedanddrilledandblasted.TheblastinggapandtheholeareshowninFigure3.   3.2Pretreatmentofshearwall   Themainbuildingisdividedintofrontandreartwo-spanI-shapedshearwalls,thatis,thenorthandsouthspans.Inordertoreducethedrillingandblastingworkload,theintermediatepre-treatmentcanformfourrowsofload-bearingcolumnswithT-shapedends,whichbecomethemainbearingofthemainbuilding.Thecomponentisthendrilledandblasted. Thethreeprinciplesofshearwallpre-cuttingare:1)theprincipleofensuringthesafetyandstabilityofthebuildingbeforeexplosion;2)theprincipleofretainingtheshearwallnode;3)theprincipleofnormalizingthepost-bodyshearwallcolumn.   3.3drillingandblastingparameters   ThebuildingtobeexplodedismainlycarriedbytheI-shapedshearwall.Theblastholesontheshearwallarearrangedintwoways,namelyverticalshallowholes.Inordertoensuretheblastingeffect,theflyingstoneiscontrolled,andthelongitudinaldrillingparalleltotheshearwallisdecided..   Calculationofblastingparameters:theapertureф=38~40mm,theminimumresistancelineisl/2ofthethicknessoftheshearwall,ieW=O.125m,theholespacingδ=(1.5~2.0)W(m),takeδ=20~25cm,theholedepthListhewidthoftheshearwallwallminus25cm,ifthewallwidthexceeds1.5m,youcanentertheholefrombothsidesoftheshearwallsection. Attheelevatorshaft,themaximumholedepthontheshearwallis2.6m,andthecenterlineoftheblastholeisnotmorethan2cmparalleltotheshearwall. Atotalof1,720longitudinalholesarearrangedontheshearwallcolumn,whichisabout2095meters.   Thethin-wallstructureoftheshearwallis1000-1200g/m3forthebottomexplosive.Thesingle-explosionconsumptionofthetwo-layerexplosiveis800g/m3,andtheexplosiveconsumptionoftheuppertwoblastingshearwallsiscontrolledat600g/m3.   4Constructionprocess   4.1Deferredsegmentationanddetonationnetwork   Thenon-electricdetonatorsofMS2,HS2,HS3andHS4aredetonatedintheholeofthe1~4rowofshearholes

  • Categories:case study
  • Author:
  • Origin:
  • Time of issue:2019-05-05 15:28
  • Views:3
Information

Completion time: June 2004

 

Project Location: Wuning Town, Dongyang City, Zhejiang Province

 

Completed unit: Zhejiang Jingan Blasting Engineering Co., Ltd.

 

Project host and participants: Wang Xia Ming, Cheng Cailin, Gu Ping, Du Zhonglong, He Huawei

 

Contributed by Cheng Cailin and Du Zhonglong

 

21层全剪力墙结构大楼的爆破拆除

 

  1 Project Overview

 

  The Wuning Town Government Building of Dongyang City is located at the intersection of Renmin Road and Zhenxing Road in Dongyang City, Zhejiang Province. The east side is about 18m away from Renmin Road, the south side is about 50m away from Zhenxing Road, the north side is 25m for the National Land Building, and the west is 9m for residential buildings.

 

  The building is divided into two parts, the main building and the podium. It faces south and is in the shape of a “sail”. The main building has 19 floors in the east half and 2 layers in the west half. The total height is 70.3m and the building area is about l1000m. The main building is a full shear wall structure, with the "work" shape shear wall as the main load-bearing member, the contact beam as the lap joint member, the east-west span plus the elevator shaft for the seven columns, the north-south span plus the corridor for the three-span, the west side of the main building There are double elevator shafts and inner stairs. There are single elevator shafts and inner stairs on the east side. The east and west sides of the building are asymmetrical in structure; the main building is a four-story podium in the south, north and west, which is a frame structure. The surrounding environment of the building is shown in Figure 1.

 

21层全剪力墙结构大楼的爆破拆除

 

  2 Characteristics and difficulties of the demolition project

 

  (1) The building to be demolished is a full shear wall structure. Due to the asymmetrical structure on the east and west sides of the building, the height is different, and the center of gravity is westward. Therefore, the opening stress of the blasting gap is balanced to ensure the accuracy of the directional dumping after the explosion.

 

  The plane structure of the building is shown in Figure 2.

21层全剪力墙结构大楼的爆破拆除

 

 (2) The building is located in the downtown area, and there are many buildings (structures) to be protected. It is 9m from the west of the building and 45m from the south. There are overhead power lines and communication lines on the south revitalization road. 55m; 12m on the east side has a variety of important pipeline facilities such as underground communication cables, military optical cables, underground cables, etc., and there are ф600mm cement water supply pipes at 17m on the east side.

 

  (3) Because the construction period is only 20 days, plus the construction is catching up with the students' college entrance examination and the middle school entrance examination period, it is impossible to work overtime at night, which brings great difficulty to the construction progress.

 

  3 Selection of blasting demolition plan

 

  According to the on-site environmental conditions and the structural characteristics of the building, a blasting demolition scheme with multiple gaps to the south is used.

 

  3.1 Blasting gap

 

  The maximum notch height of the lower notch, the formula: H=Btanф

 

  In the formula B - the width of the building, B = 16.2m; ф - the notch elevation angle, take ф = 41 °, tanф = 0.87.

 

  The surrogate value is calculated as H=14.1m.

 

  The height of the top panel of the fourth floor of the building is just 14.1m, which means that the front row can be fried up to the fourth floor. In order to make the building collapse smoothly, the height of the elevator shaft and the stairwell is increased by one layer higher than the height of the front row of columns.

 

  Two auxiliary gaps are opened in the 9th to 10th floors and 14th to 15th floors of the building. The internal I-shaped shear wall is also pre-treated and drilled and blasted. The blasting gap and the hole are shown in Figure 3.

 

  3.2 Pretreatment of shear wall

 

  The main building is divided into front and rear two-span I-shaped shear walls, that is, the north and south spans. In order to reduce the drilling and blasting workload, the intermediate pre-treatment can form four rows of load-bearing columns with T-shaped ends, which become the main bearing of the main building. The component is then drilled and blasted. The three principles of shear wall pre-cutting are: 1) the principle of ensuring the safety and stability of the building before explosion; 2) the principle of retaining the shear wall node; 3) the principle of normalizing the post-body shear wall column.

 

  3.3 drilling and blasting parameters

 

  The building to be exploded is mainly carried by the I-shaped shear wall. The blastholes on the shear wall are arranged in two ways, namely vertical shallow holes. In order to ensure the blasting effect, the flying stone is controlled, and the longitudinal drilling parallel to the shear wall is decided. .

 

  Calculation of blasting parameters: the aperture ф=38~40mm, the minimum resistance line is l/2 of the thickness of the shear wall, ie W=O.125m, the hole spacing δ=(1.5~2.0)W(m), take δ=20 ~25cm, the hole depth L is the width of the shear wall wall minus 25cm, if the wall width exceeds 1.5m, you can enter the hole from both sides of the shear wall section. At the elevator shaft, the maximum hole depth on the shear wall is 2.6m, and the center line of the blasthole is not more than 2cm parallel to the shear wall. A total of 1,720 longitudinal holes are arranged on the shear wall column, which is about 2095 meters.

 

  The thin-wall structure of the shear wall is 1000-1200g/m3 for the bottom explosive. The single-explosion consumption of the two-layer explosive is 800g/m3, and the explosive consumption of the upper two blasting shear walls is controlled at 600g/m3.

 

  4 Construction process

 

  4.1 Deferred segmentation and detonation network

 

  The non-electric detonators of MS2, HS2, HS3 and HS4 are detonated in the hole of the 1~4 row of shear holes in the building, the detonation of the non-electrical detonators of the MS2, HS2, HS3 and HS4 sections is used. The detonation of the detonators of HS5 is adopted for the gaps of 9 to 10 layers, and the detonation of the detonators of HS6 is adopted for the 14 to 15 layers of notches. The internal transmission blast network consists of two-way non-electric detonators and detonating cords; the external blasting network route blasting detonator and the compound closed four-way detonating tube blasting network. The network between the upper and lower floors has 8 paths on the 1st to 3rd floors, 4 channels on the 4th floor and above, and finally merges into two detonation buses.

 

  4.2 Detonation kit processing

 

  The in-hole initiation kit consists of a plurality of drug packs, detonating cords, and detonating detonators. In order to facilitate the charging, the medicine package and the detonating cord are tied together on the thin bamboo strips, and the medicine is wrapped around the detonating cord every 40cm and fixed; 15cm away from the tip of the detonating cord, the two detonators are activated. Tied up. The processed drug pack is slowly pushed into the blasthole, and the orifice is blocked by about 20cm, and the number of times is blocked, ensuring the quality of the blockage. The entire building was blasted with 4,200 non-electric detonators, including 3,440 holes in the hole, 760 rounds of external holes, 115 kg of emulsion explosives, and 1930 m of detonating cords.

 

  5 Vibration check and test

 

  5.1 Evaluation of blasting vibration

 

  The maximum single-shot dose of this blasting is 48kg; when the nearest distance is 25m, it is calculated that v=1.06cm/s. Therefore, the blasting vibration will not cause any damage to buildings around 25m.

 

  5.2 Assessment of collapse vibration

 

  The vibrations generated by the building (which weighs thousands of tons) when it hits the ground are threatening to the surrounding environment. We adopt multi-notch directional blasting, and the technical measures of segmentation and cross-span collapse make the building block the ground in turn. Effectively reduces the impact of landing vibration on surrounding buildings.

 

  5.3 Live real-time testing

 

  The site uses real-time blasting vibrometer for real-time testing. A total of 9 measuring points are placed on the protected buildings for real-time monitoring. The test results show that the maximum vibration is O.37cm/s. The reason why the measured value is less than the theoretical value is that the building is disintegrated in the air, and the buffer belt and the anti-vibration groove play a great role in damping.

 

  6 Other safety technical measures

 

  In order to ensure that the building is completely dumped and collapsed in the correct direction, the following measures have been taken:

 

  (1) Demolition of the podium machinery before the explosion; the pre-explosion pretreatment and the opening of the blasting gap are symmetrical to ensure that the building is backwards accurately.

 

  (2) For the protection of blasted flying stones, cover protection and detachment protection are adopted. The cover protection is covered by three layers of bamboo rafts and three layers of grass bags directly on the blasting body, and is fixed by wire tying; the detachment protection is to erect a fully enclosed protective truss with a bamboo raft at a distance of 1.5 m from the main building, the height of which is greater than the height of the blasting gap. Om.

 

  (3) Excavate the anti-vibration ditch on the east and west sides of the building. The width of the ditch is 1.5m and the depth is 2.Om. At the same time, three buffer belts and buffer belts are piled up with muck at 20m, 30m and 45m away from the building. The bottom width is 1.5m, the top width is 1.Om, and the height is 1.5m, and sandbags are laid on the surface of the buffer belt to prevent secondary splashes.

 

  7 blasting effect

 

  At 6 o'clock on June 22, blasting on time, the building collapsed to the south according to the design requirements, without deflection and recoil, the forward tilting distance is about 35m; the building is fully dismantled, the explosion height is less than 9m; there is no damage to the surrounding underground pipelines and communication cables. The southwest side residential building and the north side national land building were repeatedly tested and contrasted by the house quality inspection department and the notary department before and after the explosion, and the structure was not damaged. The blast was a complete success.

 

  8 Conclusion

 

  The success of this blasting operation mainly includes the following points:

 

  (1) Buildings with full shear wall structure, shear wall is the load-bearing component. Safety analysis and evaluation should be carried out on the pre-demolition plan before explosion to ensure safe blasting.

 

  (2) After the pre-treatment of the shear wall, it is necessary to keep the standardization of the wall column to facilitate the drilling and blasting operation and the extension of the section.

 

  (3) The drilling method of shear wall blasting is suitable for longitudinal drilling, and the blasting effect is better, and the flying stone is easy to protect, but

 

  The drilling quality is required to be high; the method of introducing the medicine package by the thin bamboo strip is very effective and simple for the positioning of multiple medicine bags in the deep hole; the detonation of the detonating cord in the blasthole doubles the detonator and the explosive The amount of use increases the synchronism of the detonation, thus ensuring the blasting effect.

 

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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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