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Demolition Blasting Project of Hangzhou Jinyang Hotel

Demolition Blasting Project of Hangzhou Jinyang Hotel

(Summary description)Completiontime:November2001   ProjectLocation:ShangchengDistrict,HangzhouCity,ZhejiangProvince   Completedby:ZhejiangZhenchongGeotechnicalEngineeringCo.,Ltd.   Projecthostandparticipants:XuePeixing,PanJianlin,LiuWenquan,XuYonggen,YeCongwu,ChenJianguo,WuNanping   Writer:XuePeixing,YeCongwu    1ProjectIntroduction   HangzhouJinyangHotelwasrebuiltfromtheoriginalHangzhouCottonKnittingFactoryComplexwithatotalconstructionareaof​​approximately5,000squaremeters. Itis44mlongfromeasttowestand15mwidefromnorthtosouth.ThebuildinghasthreerowsofcolumnsA,DandFfromsouthtonorth.ThedistancebetweenAandDis7m,andthedistancebetweenDandFis8m.Thebuildinghas7floorsandtheelevatorroomis8stories. Thebuildinghastwostairs,onetotwoaxlesforthemainladderandtwotothreeaxlesfortheelevator. Thebuildingisaconcreteframestructure.ThesectiondimensionsoftheAandFaxisreinforcedconcretecolumnsonthenorthandsouthsidesofthebuildingare400mm×500mm,thesizeofthemiddleDaxiscolumnis400nlln×600ram,andthefloorgirdersare“ten”shapedbeamswithasectionsizeof750mm×250mm,thecolumnsandbeamsarecastonsite,thefirstandsecondfloorsaremadeofC30concrete,andtherestareC20concrete. Thefloorisprefabricated,thetoiletiscastinplace,theouterwallandtheD-axisframeinfillwallare75thbrick,andtheinnerpartitionisathree-holecoalchipwithathicknessof200mm. Thereisapodiumonthenorthsideofthebuilding,whichisabrick-concretestructure.   ThebuildingislocatedontheeastsideoftherailwaycrossingofWangjiangRoad.Itissurroundedbyurbanresidentialareas.Thebuildingsaredenselypackedandtheenvironmentisverycomplicated.Thenorthsideofthebuildingis14mawayfromWangjiangRoad.Thereisahigh-voltagelinealongtheroad.EastoftheroadisHangzhouCottonKnittingFactory,SouthTheside8misa2-storeyoriginalhotelannexhouse.Itisnowatemporarybuildingforroadconstruction.Itisadenseresidentialareaandasmallcommoditystreetoutsidetheexplosionarea.Theeastsideis8.5m,whichisa6-storeycommercialandresidentialbuilding.Thebottomflooristhefarmer'smarket,thehotelandthehotel.Thereisasimplefenceinthemiddleofthecommercialandresidentialbuilding,about2mhigh,11monthewestsideisa2-storeyoldresidentialbuilding,woodenstructure,blueroofandslopingroof,andthepartoftheroadhasbeendemolished,whichhasbecomethedefectivebuildingofhalfwall.Thereisa380Vwireinthenorth-southeastframeatabout8mhigh,andthereareф400waterpipesintheundergroundlmoftheWangjiangRoadsidewalk(seeFigure1). DemolitionBlastingProjectofHangzhouJinyangHotel   2Blastingdemolitionplan   2.1Determinationofblastingdumpingplan   Toachievethedirectionalcollapseofthebuilding,itisrequiredtohavearelativelyopenspaceinthedirectionofcollapseofthebuilding. Thehorizontaldistanceofthesiteinthedirectionofitsdumpingshouldnotbelessthan2/3~3/4buildingheight. Accordingtotheheightof29mofJinyangHotel,itisobviousthatthedistancebetweenJinyangHotelandthebuildings(commercialandresidentialbuildings,residentialbuildings)andstructures(high-voltagelines,waterpipes)tobeprotectedarenotuptothisrequirement. Consideringthatthedistancebetweentheeastandsouthsidesisonlyone-thirdoftheheightofthebuilding,theresidentialbuildingonthewestsideisonthesouthside,andthereisahigh-voltagelinetobeprotected.Fromtheconstructionsiteanalysis,thebetterwaytodumpisThegroundcollapsesmainly,anditslopesslightlytothenorthandwest.Sincethewestelevatorroomisthehighestpointofthewholebuilding,itisnecessarytocontrolthecollapserangeoftheexplosiontothenorth. Itwasdecidedtoadopttheobliquefoldingfoldingandlongitudinallong-notchblastingdemolitionschemeofthefirsttwo-spancollapseinthewestsideandthecollapseoftherear9-spantothenorth-northdirection.   Duetotheshortnorth-southdirectionofthebuildingandthelongeast-westdirection,itisdifficulttoimplementthedumpingtothewest.Toensurethesuccessfulimplementationofthedumpingschemeandgoodblastingeffect,thefollowingimplementationprinciplesaredetermined:   (1)Ensurethatthefirsttwospansonthewestsidearefullycollapsed,andthatthebackninespanshaveacertainspacetodumpwestward;   (2)Therear9-spanadoptsadouble-notchformtoensurethatthebuildingcanbeverticallydumpedvertically;   (3)Themilliseconddelaydetonationtechnologyisadoptedtorealizetherequirementofdumpingtothenorth-northdirection,andatthesametimereducethevibrationhazardtotheoldresidentialbuildingonthewestsideduringblasting.   2.2Designofmainblastingparameters   2.2.1Clothholeprinciple   (1)Thewestsideofthe2rowsof3rowsofcolumns1to6layersofuniformholes,toensurethatthetwo-spanblastingfullycollapsed.   (2)Therear9spansarearrangedwithatriangularnotchtothewestinonelayerandfivelayersrespectively.Thefrontedgeofthenotchisarrangedinthreelayers,thefrontedgeofthenotchisarrangedintwolayers,andthesecondrowoftheeastrowisarrangedastworotatingholes.   (3)Arrange2to3setsofholesoneachofthe2ndand3rdlayersofthecross-shapedgirdertocrushthebeam,anddrill2to3holesineachgroup,drillingfromtoptobottom.   (4)Stairsandelevatorsareencryptedaccordingtotheactualsituationoftheexplosionpoint;   (5)TheD-axisandtheblastingheightofeachrowofthecolumnintheeast-westdirectionareshowninthefigure.TheholediameterandtheblastingheightoftheF-axisarethesa

Demolition Blasting Project of Hangzhou Jinyang Hotel

(Summary description)Completiontime:November2001   ProjectLocation:ShangchengDistrict,HangzhouCity,ZhejiangProvince   Completedby:ZhejiangZhenchongGeotechnicalEngineeringCo.,Ltd.   Projecthostandparticipants:XuePeixing,PanJianlin,LiuWenquan,XuYonggen,YeCongwu,ChenJianguo,WuNanping   Writer:XuePeixing,YeCongwu    1ProjectIntroduction   HangzhouJinyangHotelwasrebuiltfromtheoriginalHangzhouCottonKnittingFactoryComplexwithatotalconstructionareaof​​approximately5,000squaremeters. Itis44mlongfromeasttowestand15mwidefromnorthtosouth.ThebuildinghasthreerowsofcolumnsA,DandFfromsouthtonorth.ThedistancebetweenAandDis7m,andthedistancebetweenDandFis8m.Thebuildinghas7floorsandtheelevatorroomis8stories. Thebuildinghastwostairs,onetotwoaxlesforthemainladderandtwotothreeaxlesfortheelevator. Thebuildingisaconcreteframestructure.ThesectiondimensionsoftheAandFaxisreinforcedconcretecolumnsonthenorthandsouthsidesofthebuildingare400mm×500mm,thesizeofthemiddleDaxiscolumnis400nlln×600ram,andthefloorgirdersare“ten”shapedbeamswithasectionsizeof750mm×250mm,thecolumnsandbeamsarecastonsite,thefirstandsecondfloorsaremadeofC30concrete,andtherestareC20concrete. Thefloorisprefabricated,thetoiletiscastinplace,theouterwallandtheD-axisframeinfillwallare75thbrick,andtheinnerpartitionisathree-holecoalchipwithathicknessof200mm. Thereisapodiumonthenorthsideofthebuilding,whichisabrick-concretestructure.   ThebuildingislocatedontheeastsideoftherailwaycrossingofWangjiangRoad.Itissurroundedbyurbanresidentialareas.Thebuildingsaredenselypackedandtheenvironmentisverycomplicated.Thenorthsideofthebuildingis14mawayfromWangjiangRoad.Thereisahigh-voltagelinealongtheroad.EastoftheroadisHangzhouCottonKnittingFactory,SouthTheside8misa2-storeyoriginalhotelannexhouse.Itisnowatemporarybuildingforroadconstruction.Itisadenseresidentialareaandasmallcommoditystreetoutsidetheexplosionarea.Theeastsideis8.5m,whichisa6-storeycommercialandresidentialbuilding.Thebottomflooristhefarmer'smarket,thehotelandthehotel.Thereisasimplefenceinthemiddleofthecommercialandresidentialbuilding,about2mhigh,11monthewestsideisa2-storeyoldresidentialbuilding,woodenstructure,blueroofandslopingroof,andthepartoftheroadhasbeendemolished,whichhasbecomethedefectivebuildingofhalfwall.Thereisa380Vwireinthenorth-southeastframeatabout8mhigh,andthereareф400waterpipesintheundergroundlmoftheWangjiangRoadsidewalk(seeFigure1). DemolitionBlastingProjectofHangzhouJinyangHotel   2Blastingdemolitionplan   2.1Determinationofblastingdumpingplan   Toachievethedirectionalcollapseofthebuilding,itisrequiredtohavearelativelyopenspaceinthedirectionofcollapseofthebuilding. Thehorizontaldistanceofthesiteinthedirectionofitsdumpingshouldnotbelessthan2/3~3/4buildingheight. Accordingtotheheightof29mofJinyangHotel,itisobviousthatthedistancebetweenJinyangHotelandthebuildings(commercialandresidentialbuildings,residentialbuildings)andstructures(high-voltagelines,waterpipes)tobeprotectedarenotuptothisrequirement. Consideringthatthedistancebetweentheeastandsouthsidesisonlyone-thirdoftheheightofthebuilding,theresidentialbuildingonthewestsideisonthesouthside,andthereisahigh-voltagelinetobeprotected.Fromtheconstructionsiteanalysis,thebetterwaytodumpisThegroundcollapsesmainly,anditslopesslightlytothenorthandwest.Sincethewestelevatorroomisthehighestpointofthewholebuilding,itisnecessarytocontrolthecollapserangeoftheexplosiontothenorth. Itwasdecidedtoadopttheobliquefoldingfoldingandlongitudinallong-notchblastingdemolitionschemeofthefirsttwo-spancollapseinthewestsideandthecollapseoftherear9-spantothenorth-northdirection.   Duetotheshortnorth-southdirectionofthebuildingandthelongeast-westdirection,itisdifficulttoimplementthedumpingtothewest.Toensurethesuccessfulimplementationofthedumpingschemeandgoodblastingeffect,thefollowingimplementationprinciplesaredetermined:   (1)Ensurethatthefirsttwospansonthewestsidearefullycollapsed,andthatthebackninespanshaveacertainspacetodumpwestward;   (2)Therear9-spanadoptsadouble-notchformtoensurethatthebuildingcanbeverticallydumpedvertically;   (3)Themilliseconddelaydetonationtechnologyisadoptedtorealizetherequirementofdumpingtothenorth-northdirection,andatthesametimereducethevibrationhazardtotheoldresidentialbuildingonthewestsideduringblasting.   2.2Designofmainblastingparameters   2.2.1Clothholeprinciple   (1)Thewestsideofthe2rowsof3rowsofcolumns1to6layersofuniformholes,toensurethatthetwo-spanblastingfullycollapsed.   (2)Therear9spansarearrangedwithatriangularnotchtothewestinonelayerandfivelayersrespectively.Thefrontedgeofthenotchisarrangedinthreelayers,thefrontedgeofthenotchisarrangedintwolayers,andthesecondrowoftheeastrowisarrangedastworotatingholes.   (3)Arrange2to3setsofholesoneachofthe2ndand3rdlayersofthecross-shapedgirdertocrushthebeam,anddrill2to3holesineachgroup,drillingfromtoptobottom.   (4)Stairsandelevatorsareencryptedaccordingtotheactualsituationoftheexplosionpoint;   (5)TheD-axisandtheblastingheightofeachrowofthecolumnintheeast-westdirectionareshowninthefigure.TheholediameterandtheblastingheightoftheF-axisarethesa

Information

Completion time: November 2001

 

  Project Location: Shangcheng District, Hangzhou City, Zhejiang Province

 

  Completed by: Zhejiang Zhenchong Geotechnical Engineering Co., Ltd.

 

  Project host and participants: Xue Peixing, Pan Jianlin, Liu Wenquan, Xu Yonggen, Ye Congwu, Chen Jianguo, Wu Nanping

 

  Writer: Xue Peixing, Ye Congwu

 

 杭州金洋宾馆拆除爆破工程

 

  1 Project Introduction

 

  Hangzhou Jinyang Hotel was rebuilt from the original Hangzhou Cotton Knitting Factory Complex with a total construction area of ​​approximately 5,000 square meters. It is 44m long from east to west and 15m wide from north to south. The building has three rows of columns A, D and F from south to north. The distance between A and D is 7m, and the distance between D and F is 8m. The building has 7 floors and the elevator room is 8 stories. The building has two stairs, one to two axles for the main ladder and two to three axles for the elevator. The building is a concrete frame structure. The section dimensions of the A and F axis reinforced concrete columns on the north and south sides of the building are 400mm×500mm, the size of the middle D axis column is 400nlln×600ram, and the floor girders are “ten” shaped beams with a section size of 750mm× 250mm, the columns and beams are cast on site, the first and second floors are made of C30 concrete, and the rest are C20 concrete. The floor is prefabricated, the toilet is cast in place, the outer wall and the D-axis frame infill wall are 75th brick, and the inner partition is a three-hole coal chip with a thickness of 200mm. There is a podium on the north side of the building, which is a brick-concrete structure.

 

  The building is located on the east side of the railway crossing of Wangjiang Road. It is surrounded by urban residential areas. The buildings are densely packed and the environment is very complicated. The north side of the building is 14m away from Wangjiang Road. There is a high-voltage line along the road. East of the road is Hangzhou Cotton Knitting Factory, South The side 8m is a 2-storey original hotel annex house. It is now a temporary building for road construction. It is a dense residential area and a small commodity street outside the explosion area. The east side is 8.5m, which is a 6-storey commercial and residential building. The bottom floor is the farmer's market, the hotel and the hotel. There is a simple fence in the middle of the commercial and residential building, about 2m high, 11m on the west side is a 2-storey old residential building, wooden structure, blue roof and sloping roof, and the part of the road has been demolished, which has become the defective building of half wall. There is a 380V wire in the north-south east frame at about 8m high, and there are ф400 water pipes in the underground lm of the Wangjiang Road sidewalk (see Figure 1).

 

Demolition Blasting Project of Hangzhou Jinyang Hotel

 

  2 Blasting demolition plan

 

  2.1 Determination of blasting dumping plan

 

  To achieve the directional collapse of the building, it is required to have a relatively open space in the direction of collapse of the building. The horizontal distance of the site in the direction of its dumping should not be less than 2/3~3/4 building height. According to the height of 29m of Jinyang Hotel, it is obvious that the distance between Jinyang Hotel and the buildings (commercial and residential buildings, residential buildings) and structures (high-voltage lines, water pipes) to be protected are not up to this requirement. Considering that the distance between the east and south sides is only one-third of the height of the building, the residential building on the west side is on the south side, and there is a high-voltage line to be protected. From the construction site analysis, the better way to dump is The ground collapses mainly, and it slopes slightly to the north and west. Since the west elevator room is the highest point of the whole building, it is necessary to control the collapse range of the explosion to the north. It was decided to adopt the oblique folding folding and longitudinal long-notch blasting demolition scheme of the first two-span collapse in the west side and the collapse of the rear 9-span to the north-north direction.

 

  Due to the short north-south direction of the building and the long east-west direction, it is difficult to implement the dumping to the west. To ensure the successful implementation of the dumping scheme and good blasting effect, the following implementation principles are determined:

 

  (1) Ensure that the first two spans on the west side are fully collapsed, and that the back nine spans have a certain space to dump westward;

 

  (2) The rear 9-span adopts a double-notch form to ensure that the building can be vertically dumped vertically;

 

  (3) The millisecond delay detonation technology is adopted to realize the requirement of dumping to the north-north direction, and at the same time reduce the vibration hazard to the old residential building on the west side during blasting.

 

  2.2 Design of main blasting parameters

 

  2.2.1 Cloth hole principle

 

  (1) The west side of the 2 rows of 3 rows of columns 1 to 6 layers of uniform holes, to ensure that the two-span blasting fully collapsed.

 

  (2) The rear 9 spans are arranged with a triangular notch to the west in one layer and five layers respectively. The front edge of the notch is arranged in three layers, the front edge of the notch is arranged in two layers, and the second row of the east row is arranged as two rotating holes.

 

  (3) Arrange 2 to 3 sets of holes on each of the 2nd and 3rd layers of the cross-shaped girder to crush the beam, and drill 2 to 3 holes in each group, drilling from top to bottom.

 

  (4) Stairs and elevators are encrypted according to the actual situation of the explosion point;

 

  (5) The D-axis and the blasting height of each row of the column in the east-west direction are shown in the figure. The hole diameter and the blasting height of the F-axis are the same as those of the D-axis. The blasting height of the A-axis is slightly lower than D and F, that is, one hole is less. So that the notch is slightly skewed to the north side.

 

  2.2.2 cloth hole parameters

 

  In principle, the cloth hole is opposite to the narrow side of the column, and the hole distance is 1.5 to 1.8 times of the minimum resistance line. The floor beam is drilled from top to bottom, and each part is provided with a set of holes, the number of holes is 2 to 3, and the wall The body is made of a 40cm×40cm hole mesh plum-shaped cloth hole, and the hole depth is 2/3 of the thickness of the wall; the stairs and the elevator room are appropriately encrypted according to the actual situation of the explosion point. The pore parameters of the main columns and beams are shown in Table 1.

 

Demolition Blasting Project of Hangzhou Jinyang Hotel

 

  2.3 dose design

 

  The single-hole charge is calculated according to the volume formula: Q1=qaBH, where Q1 is the charge per hole, g; q is the calculated unit dose, g/m3; a is the hole distance, m; B and H are the columns respectively Wall section size, m; calculation unit dosage q is selected according to the drilling position, the selection principle is:

 

  (1) The bottom column should adopt a large unit consumption to ensure that the bottom column is fully damaged, taking q=1000~1200g/m3;

 

  (2) The second unit and above columns should adopt a small unit consumption, and take q=600~800g/m3;

 

  (3) The thickness of the beam is small, and a large unit consumption should be adopted, taking q=1000~1200g/m3;

 

  (4) The wall can adopt a small unit consumption, and take q=500~700g/m3. The specific unit consumption has been appropriately adjusted according to the test results.

 

  2.4 detonation network design

 

  The second series of semi-second detonating tube detonators are used in the hole of the project, and the detonating tube detonator is connected into the network format closed network by the four-way hole, and the closed network is formed by the same-stage electric detonator forming a series network. Multi-point excitation detonation. According to the implementation principle of the dumping direction, the detonation sequence is arranged from three directions:

 

  (1) In the up and down direction, the detonation sequence of the first gap first burst and the lower gap burst is used, and the bursting height is reduced to reduce the bursting vibration intensity;

 

  (2) In the east-west direction, the detonation sequence of the west side first explosion and the east side explosion is used to achieve the effect of the building leaning to the west side. The lower gap divides the east-west direction into four sections, and each of the three columns is a section. , from the west side to the east side of each partition sequentially delayed detonation;

 

  (3) In the north-south direction, a row of columns on the south side of the first section on the west side is deferred from the north side column, and the purpose is to make the west side of the building tilt toward the north.

 

  The specific initiation sequence is:

 

  (1) The 1st to 3rd rows of columns of the F and D axes are simultaneously detonated;

 

  (2) After the third row, the row is blasted at intervals of 380ms;

 

  (3) The A-axis and the same row of columns are detonated 380ms later than the F and D-axis columns;

 

  (4) The same row and coaxial columns, walls and beams are simultaneously detonated;

 

  (5) The fourth layer detonated at 380ms in the evening, and the A-axis explosion height was slightly lower than the D and F axes.

 

  2.5 pretreatment design

 

  Since many buildings have been added since the dismantled building was changed from the original complex to the hotel, in order to reduce the drilling workload and ensure the blasting and crushing effect, the lower layers of the blasting body are required to return to the original state of the frame structure, that is, basically only the beam is retained. And the column and a small number of partition walls, at the same time, some key parts that affect the collapse are pre-localized to ensure the smooth disintegration of the building during blasting. The pre-treatment must ensure that the structure of the building is stable and safe, and only the non-bearing wall is removed for blasting. Partial walls, stairs, etc. that have an impact on the collapse of the work. The pre-treatment work before blasting mainly includes:

 

 杭州金洋宾馆拆除爆破工程

 

 (1) Demolition of doors, windows and pipelines, equipment, elevators, etc. of the building;

 

  (2) The first floor podium on the north side of the building is a post-added brick-concrete structure, which is manually removed before the explosion;

 

  (3) 1 to 5 layers of the middle partition wall, 1 to 3 layers of D-axis wall and 1 layer of peripheral walls are manually removed or partially removed;

 

  (4) The east-west side stairs are partially damaged before blasting;

 

  (5) Partial treatment of the elevator car and part of the beam to reduce the structure of the place.

 

  3 Safety measures

 

  Due to the complicated environment around the demolished building, the individual flying stones that may be generated during the blasting must be controlled within a certain range when performing the demolition blasting operation. In the demolition blasting of Jinyang Hotel, the following protective measures are mainly taken:

 

  (1) leaving the wall with no direct relationship between the bottom layer and the blasting as a protective barrier during blasting;

 

  (2) The bottom of the bottom layer is surrounded by bamboo poles as the wall of the construction site and the near-body protection during blasting;

 

  (3) The blasting part of the column is covered with bamboo plaque, woven bag, barbed wire and other materials for multi-layer cover protection. The bottom column is used for a large amount of material. The blasting flying stone direction is close to the outside of the blasting part of the building. A certain height is used as a key protection measure. All coverage protection is higher or wider than the blasting site;

 

  (4) The part of the sidewalk with underground pipelines is covered with sandbags and other materials.

 

  4 blasting effect

 

  The demolition blasting of Jinyang Hotel was successfully implemented on November 19, 2001. After the detonation, the north side of the building on the west side of the building first sank in the north, and the south side part was obviously pulled by the north side building to the north. The west to the east continued to sink and collapse. The blasting did not cause any damage to the surrounding buildings. The explosion height was about 6m. The collapse of the east side explosion was about 5m, the west side was about 6m, the south side was about 4m, the southeast corner was 2m, and the north side was about 8m. Achieved the intended purpose.

 

  5 reviews

 

  The demolition blasting of Jinyang Hotel is characterized by the use of vertical double gaps to solve the problem of insufficient building collapse distance. When the longitudinal orientation is dumped, the center of gravity of the building is difficult to shift out of the gap. In fact, the building still basically collapses in situ when blasting, but the slight deviation to the northwest side is beneficial to the safety of the other side. On the detonation network, the blasting arranged the detonation time difference from the three-dimensional arrangement, and played a key role in achieving the dumping mode of “mainly collapsed in situ, slightly tilted to the west and northward”. The project adopts a combination of longitudinal long slits and reasonable implementation of staged delayed blasting, which realizes the oblique folding dumping of buildings and effectively controls the collapse range.

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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   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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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