乌兹别克斯坦卡姆奇克隧道岩爆段的围岩特点
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摘要
乌兹别克斯坦卡姆奇克隧道具有地应力最大主应力为水平方向,且与隧道轴线接近垂直的特点。以该隧道2014年12月底前发生的132处岩爆为基础数据,对岩爆处围岩岩块的力学特性及节理走向与隧道的夹角、节理倾角等进行了试验研究和统计分析。结果表明:卡姆奇克隧道发生岩爆的花岗闪长岩和正长斑岩具有强度高、破坏前变形小且主要是弹性变形、应变能消耗比大于1的特点;卡姆奇克隧道的岩爆主要出现在拱顶。
The characteristics of Uzbekistan Kamchik tunnel are that the maximum principal stress of the crustal stress is horizontal and close to the axis of the tunnel. Data from 132 rock burst occurred in the tunnel before the end of December 2014 was collected. The mechanical characteristics of the surrounding rock mass and the angle between the joint and the tunnel and the dip of the joint were tested and statistically analyzed. The results show that the granodiorite and the orthophyre with rock burst in the Kumchik tunnel have high strength, small deformation before damage and mainly elastic deformation, and the strain energy consumption ratio is more than one; the Kumchik tunnel rock burst mainly occurs in the arch crest.
The characteristics of Uzbekistan Kamchik tunnel are that the maximum principal stress of the crustal stress is horizontal and close to the axis of the tunnel. Data from 132 rock burst occurred in the tunnel before the end of December 2014 was collected. The mechanical characteristics of the surrounding rock mass and the angle between the joint and the tunnel and the dip of the joint were tested and statistically analyzed. The results show that the granodiorite and the orthophyre with rock burst in the Kumchik tunnel have high strength, small deformation before damage and mainly elastic deformation, and the strain energy consumption ratio is more than one; the Kumchik tunnel rock burst mainly occurs in the arch crest.
引文
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[14]谢勇谋,巨能攀.浅析隧洞围岩宏微观结构与岩爆[J].岩石力学与工程学报,2005,16(4):58-61.
[15]李忠,汪俊民.重庆陆家岭隧道岩爆工程地质特征分析与防治措施研究[J].岩石力学与工程学报,2005,24(18):3398-3402.
[16]刘佑荣,唐辉明.岩体力学[M].北京:化学工业出版社,2008:219-220.
[17]王喜华.雅鲁藏布江峡谷段某深埋隧道岩爆特征分析[J].水利与建筑工程学报,2016,14(6):25-29.
[2]Stacey T R.Dynamic Rock failure and its containment[C]//Proceedings of the First International Conference on Rock Dynamics and Applications.Lausanne:CRCPress,2013:57-70.
[3]Alexsander M Linkov.Keynote lecture:New geomechanical approaches to develop quantitative seismicity[C]//Rockburst and Seismicity in Mines.Rotterdam:A.A.Balkema,1997:151-166.
[4]Mueller W.Numerical simulation of rock bursts[J].Mining Science&Technology,1991,12(1):27-42.
[5]陈云,阮怀宁,朱珍德.深埋隧洞岩爆成因机理分析与防治研究[J].水利与建筑工程学报,2014,12(1):209-212.
[6]钱七虎.地下工程建设安全面临的挑战与对策[J].岩石力学与工程学报,2012,31(10):1945-1956.
[7]张镜剑,傅冰骏.岩爆及其判据和防治[J].岩石力学与工程学报,2008,27(10):2034-2042.
[8]徐林生.二郎山公路隧道岩爆特征与防治措施的研究[J].土木工程学报,2004,37(1):61-64.
[9]周德培,洪开荣.太平驿隧洞岩爆特征及防治措施[J].岩石力学与工程学报,1995,19(2):171-178.
[10]White B G,Whyatt J K.Role of fault slip on mechanisms of rock burst damage,Lucky Friday Mine,Idaho,USA[C]//Proceedings of the Second Southern African Rock Engineering Symposium.Portgual:International Society of Rock Mechanics,1999:169-178.
[11]冯夏庭,陈炳瑞,明华军,等.深埋隧洞岩爆孕育规律与机制:即时型岩爆[J].岩石力学与工程学报,2012,31(3):433-444.
[12]谭以安.岩爆特征及岩体结构效应[J].中国科学:B辑化学生命科学地学,1991(9):985-991.
[13]周辉,孟凡震,张传庆,等.深埋硬岩隧洞岩爆的结构面作用机制分析[J].岩石力学与工程学报,2015,34(4):720-727.
[14]谢勇谋,巨能攀.浅析隧洞围岩宏微观结构与岩爆[J].岩石力学与工程学报,2005,16(4):58-61.
[15]李忠,汪俊民.重庆陆家岭隧道岩爆工程地质特征分析与防治措施研究[J].岩石力学与工程学报,2005,24(18):3398-3402.
[16]刘佑荣,唐辉明.岩体力学[M].北京:化学工业出版社,2008:219-220.
[17]王喜华.雅鲁藏布江峡谷段某深埋隧道岩爆特征分析[J].水利与建筑工程学报,2016,14(6):25-29.