硐室爆破下隧洞振动监测及分析
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摘要
金堆城南露天揭顶硐室爆破爆区正下方210m有一高6m、宽5m的输水隧洞,为确保硐室爆破时隧洞的安全,硐室爆破分3次进行.通过在隧洞内监测一爆区小药量硐室爆破对隧洞的振动影响,寻找硐室爆破的振动传播规律,为二爆区较大硐室爆破提供参考依据.实践证明,振动监测为指导硐室大爆破提供了重要的依据,也可以为类似硐室爆破下的隧洞安全评估提供参考.
210 m under JDC chamber blasting area is a hydraulic tunnel with 6 metres high and 5 metres wide.The chamber blasting was divided into three districts in order to pretect the hydraulic tunnel when the chamber blasting was detonated.The blasting vibration produced in the 1st blasting district was tested to find the earthquake wave transmitting influence of the hydraulic tunnel under chamber blasting,which will provide a reference for the 2nd district blasting whose charge is nearly two times to the charge of the 1st blasting district.The experiences have proved that the testing results of chamber blasting earthquake can provide an reference to supervise the later chamber blasting,the transmitting parameter of earthquake wave can provide a reference to similar engineering for safty assessment.
210 m under JDC chamber blasting area is a hydraulic tunnel with 6 metres high and 5 metres wide.The chamber blasting was divided into three districts in order to pretect the hydraulic tunnel when the chamber blasting was detonated.The blasting vibration produced in the 1st blasting district was tested to find the earthquake wave transmitting influence of the hydraulic tunnel under chamber blasting,which will provide a reference for the 2nd district blasting whose charge is nearly two times to the charge of the 1st blasting district.The experiences have proved that the testing results of chamber blasting earthquake can provide an reference to supervise the later chamber blasting,the transmitting parameter of earthquake wave can provide a reference to similar engineering for safty assessment.
引文
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[2]焦永斌,高赛红,邓飞,等.260t级硐室爆破地震测试及降震分析[J].矿业研究与开发,2006,26(4):83-85.(JIAO Yong-bin,GAO Sai-hong,DENGFei,et al.Test of earthquake induced by 260tchargechamber blasting and the vibration reduction meas-ures[J].Mining Research and Development,2006,26(4):83-85.(in Chinese))
[3]王德胜,龚敏,杜金科,等.孟家沟硐室大爆破震动测试[J].爆破,2004,21(3):96-98,104.(WANG De-sheng,GONG Min,DU Jin-ke,et al.Virbrationcharacteristics of a linear charge blasting[J].Blas-ting,2004,21(3):96-98,104.(in Chinese))
[4]刘维忠.酒钢集团西沟矿东山头硐室爆破[J].工程爆破,2011,17(4):45-48,62.(LIU Wei-zhong.Chamber blasting of the east mountain in Xigou Mineof Jjiuquan Iron&Steel Group[J].Engineering Blas-ting,2011,17(4):45-48,62.(in Chinese))
[5]杨年华,张志毅.复杂环境下硐室爆破振动控制的应用研究[J].工程爆破,2008,14(1):20-23.(YANGNian-hua,ZHANG Zhi-yi.Application research ofcontrolling vibration from chamber blasting in thecomplicated environment[J].Engineering Blasting,2008,14(1):20-23.(in Chinese))
[6]易长平,卢文波,张建华,等.爆破振动作用下城门洞形衬砌的临界振速研究[J].岩土力学,2008,29(8):2203-2208.(YI Chang-ping,LU Wen-bo,ZHANGJian-hua,et al.Study on critical failure vibration ve-locity of arch with vertical wall lining subjected toblasting vibration[J].Rock and Soil Mechanics,2008,29(8):2203-2208.(in Chinese))
[7]郝飞.对硐室爆破设计中一些问题的探讨[J].隧道建设,2007,27(3):21-23.(HAO Fei.Discussion onsome problems in chamber blasting design[J].Tun-nel Construction,2007,27(3):21-23.(in Chinese))
[8]白俊.峨口铁矿北采场硐室大爆破安全控制技术[J].工程爆破,2002,8(3):70-72.(BAI Jun.Safetytechnology for large-scale chamber blasting in north-ern mining area of Ekou iron open pit[J].Engineer-ing Blasting,2002,8(3):70-72.(in Chinese))
[9]贾虎,郑文豫,徐颖.基于有限元数值计算的硐室爆破震动分析[J].矿冶工程,2007,27(4):14-16.(JIAHu,ZHENG Wen-yu,XU Ying.Analysis of chamberblasting vibration based on finite element numericalsimulation[J].Mining and Metallurgical Engineer-ing,2007,27(4):14-16.(in Chinese))
[10]殷延军.金堆城揭顶硐室爆破群药包起爆时序的设计控制[J].中国钼业,2010,34(6):19-21.(YINYan-jun.The design control of multi-charges ms-delay initiation timing for explosive in the coyoteblasting of JDC[J].China Molybdenum Industry,2010,34(6):19-21.(in Chinese))
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