周宁水电站地下厂房开挖爆破地震波衰减规律的研究
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摘要
周宁水电站地下厂房尺寸为66.82m×17.90m×42.20m(长×宽×高)的大硐室,其围岩为新鲜完整的钾长花岗岩。在爆破开挖中,为保护岩锚梁壁,在对保护层采用预裂爆破的条件下对其进行了爆破振动安全监测,分析了在该施工条件下爆破对花岗岩体的爆破振动效应,用回归方法计算求出其地震波衰减系数α和因素系数k,总结出新鲜完整花岗岩体中爆破地震波的传播规律,从而推断爆破对围岩的损伤度,并以此指导后期工程中爆破参数的选择和安全控制方案。所得完整花岗岩体的爆破地震波传播参数,可为同类工程提供参考依据。
The underground workshop of Zhouning Hydropower Station is a large chamber with size of 66.82 m× 17.90 m×42.20 m(L×H×W );its wall rock is lengthened crisp and whole granite. In order to protect rock anchor and girder wall,safety monitoring of exploding tremor is considered for the wall rock after adopting presplit blasting to protected layer in the courses of blasting and digging. This paper analyzes the domino effect of blasting tremor that blasting brought,acquires attenuation coefficient α of earthquake wave and equation coefficient k by using the regression analysis method;summarizes the transmitting rule of blasting earthquake wave indwell the crisp and whole granite,consequently. The scathing extent is deduced,which is used to supervise the upper preferences and the scheme of safety command. The transmitting parameter of earthquake wave can provide reference to similar engineering.
The underground workshop of Zhouning Hydropower Station is a large chamber with size of 66.82 m× 17.90 m×42.20 m(L×H×W );its wall rock is lengthened crisp and whole granite. In order to protect rock anchor and girder wall,safety monitoring of exploding tremor is considered for the wall rock after adopting presplit blasting to protected layer in the courses of blasting and digging. This paper analyzes the domino effect of blasting tremor that blasting brought,acquires attenuation coefficient α of earthquake wave and equation coefficient k by using the regression analysis method;summarizes the transmitting rule of blasting earthquake wave indwell the crisp and whole granite,consequently. The scathing extent is deduced,which is used to supervise the upper preferences and the scheme of safety command. The transmitting parameter of earthquake wave can provide reference to similar engineering.
引文
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[12]刘文韬,俞茂宏,赵坚,等.岩石的连续损伤本构模型及在地下爆炸波数值计算中的应用[J].岩石力学与工程学报,2004,23(13):2149–2156.(Liu Wentao,Yu Maohong,Zhao Jian,et al.Continuous damaged constitutive model of rock and its application to numerical simulation for underground strong explosion[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(13):2149–2156.(in Chinese))
[13]王元汉,李卧东,李启光,等.岩爆预测的模糊数学综合评判方法[J].岩石力学与工程学报,1998,17(5):493–501(Wang Yuanhan,Li Wodong,Lee P K K,et al.Method of fuzzy comprehensive evaluations for rockburst prediction[J].Chinese Journal of Rock Mechanics and Engineering,1998,17(5):493–501.(in Chinese))
[2]邱祥波,李术才,李树忱.三维地应力回归分析方法与工程应用[J].岩石力学与工程学报,2003,22(10):1613–1617.(Qiu Xiangbo,Li Shucai,Li Shuchen.3D geostress regression analysis method and its application[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(10):1613–1617.(in Chinese))
[3]钱七虎,陈士海.爆破地震效应[J].爆破,2004,21(2):1–5.(Qian Qihu,Chen Shihai.Blasting vibration effect[J].Blasting,2004,21(2):1–5.(in Chinese))
[4]中华人民共和国国家标准编写组.爆破安全规程(GB722–2003)[S].北京:北京标准出版社,2003.(The National Standards Compilation Group of People′s Republic of China.Safety Rules of Blasting(GB722–2003)[S].Beijing:Standards Press of Beijing,2003.(in Chinese))
[5]中华人民共和国行业标准编写组.水工建筑物岩石基础开挖工程施工技术规范(SL–94)[S].北京:水利电力出版社,1994.(The Professional Standards Compilation Group of People′s Republic of China.Building Rock Basic Excavation Project Construction Technical Specification of the Water Conservancy Project(SL–94)[S].Beijing:Water Resources and Electric Power Press,1994.(in Chinese))
[6]王德胜,龚敏,杜金科.孟家狗硐室爆破地震测试[J].爆破,2004,21(3):96–98.(Wang Desheng,Gong Min,Du Jinke.Virbration characteristics of a linear charge blasting[J].Blasting,2004,21(3):96–98.(in Chinese))
[7]孟吉夏,惠鸿斌.爆破测试技术[M].北京:冶金工业出版社,1992.(Meng Jixia,Hui Hongbin.Testing of Blasting[M].Beijing:China Metallurgical Industry Press,1992.(in Chinese))
[8]周纪芗.实用回归分析方法[M].上海:上海科学技术出版社,1990.(Zhou Jixiang.Practical Method of Regression Analysis[M].Shanghai:Shanghai Scientific and Technical Publishers,1990.(in Chinese))
[9]刘朝荣.工业技术应用数理统计方法[M].武汉:湖北科学技术出版社,1985.(Liu Chaorong.Statistical Method of Mathematics and Physics of Industrial Technical Application[M].Wuhan:Hubei Science Technology Press,1985.(in Chinese))
[10]刘红岩,王根旺,陈福刚.以损伤度量为特征的岩石损伤理论研究进展[J].爆破,2004,21(1):9–12.(Liu Hongyan,Wang Genwang,Chen Fugang.Research development of rock damage theory characterized by damage variables[J].Blasting,2004,21(1):9–12.(in Chinese))
[11]刘传孝,王同旭,杨永杰.高应力区巷道围岩破碎范围的数值模拟及现场测定方法研究[J].岩石力学与工程学报,2004,23(14):2413–2416.(Liu Chuanxiao,Wang Tongxu,Yang Yongjie.Numerical simulation on fractured zone of roadway in high in-situ stress area by3DEC and its GPR verification in site[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(14):2413–2416.(in Chinese))
[12]刘文韬,俞茂宏,赵坚,等.岩石的连续损伤本构模型及在地下爆炸波数值计算中的应用[J].岩石力学与工程学报,2004,23(13):2149–2156.(Liu Wentao,Yu Maohong,Zhao Jian,et al.Continuous damaged constitutive model of rock and its application to numerical simulation for underground strong explosion[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(13):2149–2156.(in Chinese))
[13]王元汉,李卧东,李启光,等.岩爆预测的模糊数学综合评判方法[J].岩石力学与工程学报,1998,17(5):493–501(Wang Yuanhan,Li Wodong,Lee P K K,et al.Method of fuzzy comprehensive evaluations for rockburst prediction[J].Chinese Journal of Rock Mechanics and Engineering,1998,17(5):493–501.(in Chinese))
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