节理岩体地下洞室稳定性的静动力响应分析
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摘要
节理岩体地下洞室在地震作用下的安全响应是众多专家学者关注的问题之一,本文针对该问题采用三维离散元法研究节理地下洞室的稳定性,建立了一个含节理组的地下洞室模型进行分析研究。分别对洞室开挖后在常规荷载作用下的响应、洞室开挖后在地震荷载作用下的响应以及开挖支护后在地震荷载作用下的响应等三种工况进行模拟,得出了洞室在三种工况下的应力和位移变化情况。研究表明:地震对洞室的破坏非常大且时间短暂,支护后的洞室围岩能够使破坏时间延迟,在一定时间内增强了洞室围岩的抗震能力。本文的工作不仅对含节理的地下洞室开挖后的围岩变形和支护提供借鉴,而且对地下洞室和隧道的抗震设计具有指导意义。
The safety response of jointed rock in underground caverns is one of the problems that draw the attention of geology specialists and scholars.Adopting three-dimensional discrete element method,a numerical model of jointed rock underground cavern was established to study its stability.The safety response after excavation is simulated respectively under the routine loads,seismic loads and seismic loads with bolting support.The variation of stress and displacement under these three conditions are obtained.The research shows that the damage from earthquake to caverns is huge and quick while bolting support can postpone the destruction of the cavern and increase the resistant capability of the cavern in certain period of time.The result can provide reference to the study of the deformation and bolting of underground caverns,and can be directive to the seismic design of underground caverns and tunnels.
The safety response of jointed rock in underground caverns is one of the problems that draw the attention of geology specialists and scholars.Adopting three-dimensional discrete element method,a numerical model of jointed rock underground cavern was established to study its stability.The safety response after excavation is simulated respectively under the routine loads,seismic loads and seismic loads with bolting support.The variation of stress and displacement under these three conditions are obtained.The research shows that the damage from earthquake to caverns is huge and quick while bolting support can postpone the destruction of the cavern and increase the resistant capability of the cavern in certain period of time.The result can provide reference to the study of the deformation and bolting of underground caverns,and can be directive to the seismic design of underground caverns and tunnels.
引文
[1]陶振宁.岩石力学理论与实践[M].北京:水利电力出版社,1989.(Tao Zhenning.Theory and practice of rock mechanics[M].Beijing:Water Resource and Electric Power Press,1989.(in Chinese))
[2]周维垣.高等岩石力学[M].北京:水利电力出版社,1990.(Zhou Weiyuan.Advanced rock mechanics[M].Beijing:Water Resource and Electric Power Press,1990.(in Chinese))
[3]黄国明.节理岩体描述及其工程应用[D].成都:成都理工大学,1999.(Huang Guoming.Joint rock mass is described and its engineering application[D].Chengdu:Chengdu University of Technology,1999.(in Chinese))
[4]陈剑平.岩体随机不连续面三维网络数值模拟技术[J].岩土工程学报,2001,23(4):397-402.(Chen Jianping.3-D net work numerical modeling technique for random discontinuities of rock mass[J].Chinese Journal of Geotechnical Engineering,2001,23(4):397-402.(in Chinese))
[5]Chen Jianyun,Jing Li,Zhou Jing.Seismic analysis of large 3-D underground caverns based on high performance recursive method[J].International Journal of Solids and Structures,2004,41(11-12):3081-3094.
[6]夏祥,李俊如,李海波,等.爆破荷载作用下岩体振动特征的数值模拟[J].岩土力学,2005,26(1):50-56.(Xia Xiang,Li Junru,Li Haibo,et al.Blasting vibration characteristics under the load of the numerical simulation of rock[J].Rock and Soil Mechanics,2005,26(1):50-56.(in Chinese))
[7]隋斌,朱维申,李晓静.地震荷载作用下大型地下洞室群的动态响应模拟[J].岩土工程学报,2008,30(12):1877-1882.(Sui Bin,Zhu Weishen,Li Xiaojing.Simulation on dynamic response of large underground opening complex under seismic loads[J].Chinese Journal of Geotechnical Engineering,2008,30(12):1877-1882.(in Chinese))
[8]李海波,马行东,李俊如,等.地震荷载作用下地下岩体洞室位移特征的影响因素分析[J].岩土工程学报,2006,28(3):358-362.(Li Haibo,Ma Xingdong,Li Junru,et al.Study on influence factors of rock cavern displacement under earthquake[J].Chinese Journal of Geotechnical Engineering,2006,28(3):358-362.(in Chinese))
[9]张丽华,陶连金.节理岩体地下洞室群的地震动力响应分析[J].世界地震工程,2002,18(2):158-162.(Zhang Lihua,Tao Lianjin.Dynamic response analysis of large underground excavations in jointed rock[J].World Earthquake Engineering,2002,18(2):158-162.(in Chinese))
[10]王泳嘉,邢纪波.离散元法及其在岩土力学中的应用[M].辽宁:东北工学院出版社,1991.(Wang Yongjia,Xing Jibo.The discrete element method and its application in rock and soil mechanics[M].Liaoning:Northeast Institute of Technology Press,1991.(in Chinese))
[11]郑颖人,王永甫,王成,等.节理岩体隧道的稳定分析与破坏规律探究-隧道稳定性分析讲座之一[J].地下空间与工程学报,2011,7(4):649-656.(Zheng Yingren,Wang Yongfu,Wang Cheng,et al.Stability analysis and exploration of failure law of joint rock tunnel-Seminar on tunnel stability analysis[J].Chinese Journal of Underground Space and Engineering,2011,7(4):649-656.(in Chinese))
[12]王振,韩春,贾超,等.深埋节理岩体隧洞开挖与支护的3DEC模拟[J].水电能源科学,2013,31(6):150-152.(Wang Zhen,Han Chun,Jia Chao,et al.Three-dimensional element code simulation of high buried depth joint rock tunnel excavation and bolt support[J].Water Resources and Power,2013,31(6):150-152.(in Chinese))
[13]马行东,李海波.地震波入射方向对地下岩体洞室动态响应的初步分析[J].水力发电,2007,33(1):23-25.(Ma Xingdong,Li Haibo.Primary analysis of different incidence propagation on dynamic response of underground rock cavern under earthquake[J].Journal of Hydroelectric Engineering,2007,33(1):23-25.(in Chinese))
[14]Lin m,Kicker d,Damjancb,et al.Mechanical degradation of emplacement drifts at yucca mountain-A modeling case study-part I:Nonlithophysal rock[J].International Journal of Rock Mechanics&Mining Sciences,2007,(44):351-367.
[15]王涛,熊将,郭武祥,等.地震荷载作用下地下厂房围岩稳定的离散元计算方法研究[J].长江科学院院报,2005,26(12):58-62.(Wang Tao,Xiong Jiang,Guo Wuxiang,et al.Research on stability of rock mass around underground powerhouse cavern by discrete element method under earthquake[J].Journal of Yangtze River Scientific Research Institute,2005,26(12):58-62.(in Chinese))
[16]吕涛.地下水与地震作用下节理岩体地下洞室围岩力学响应研究[D].北京:北京工业大学,2005.(Lv Tao.Study on the mechanical response of the surrounding rock mass of the underground excavation in the jointed rock mass with the consideration groundwater and the seismic loading[D].Beijing:Beijing University of Technology,1999.(in Chinese))
[17]孙文杰,孔亮,郑颖人,等.基于安全系数的地铁车站衬砌优化设计探讨[J].地下空间与工程学报,2012,8(1):116-121.(Sun Wenjie,Kong Liang,Zheng Yingren,et al.Discussion on lining optimization design of subway station based on safety factor[J].Chinese Journal of Underground Space and Engineering,2012,8(1):116-121.(in Chinese))
[2]周维垣.高等岩石力学[M].北京:水利电力出版社,1990.(Zhou Weiyuan.Advanced rock mechanics[M].Beijing:Water Resource and Electric Power Press,1990.(in Chinese))
[3]黄国明.节理岩体描述及其工程应用[D].成都:成都理工大学,1999.(Huang Guoming.Joint rock mass is described and its engineering application[D].Chengdu:Chengdu University of Technology,1999.(in Chinese))
[4]陈剑平.岩体随机不连续面三维网络数值模拟技术[J].岩土工程学报,2001,23(4):397-402.(Chen Jianping.3-D net work numerical modeling technique for random discontinuities of rock mass[J].Chinese Journal of Geotechnical Engineering,2001,23(4):397-402.(in Chinese))
[5]Chen Jianyun,Jing Li,Zhou Jing.Seismic analysis of large 3-D underground caverns based on high performance recursive method[J].International Journal of Solids and Structures,2004,41(11-12):3081-3094.
[6]夏祥,李俊如,李海波,等.爆破荷载作用下岩体振动特征的数值模拟[J].岩土力学,2005,26(1):50-56.(Xia Xiang,Li Junru,Li Haibo,et al.Blasting vibration characteristics under the load of the numerical simulation of rock[J].Rock and Soil Mechanics,2005,26(1):50-56.(in Chinese))
[7]隋斌,朱维申,李晓静.地震荷载作用下大型地下洞室群的动态响应模拟[J].岩土工程学报,2008,30(12):1877-1882.(Sui Bin,Zhu Weishen,Li Xiaojing.Simulation on dynamic response of large underground opening complex under seismic loads[J].Chinese Journal of Geotechnical Engineering,2008,30(12):1877-1882.(in Chinese))
[8]李海波,马行东,李俊如,等.地震荷载作用下地下岩体洞室位移特征的影响因素分析[J].岩土工程学报,2006,28(3):358-362.(Li Haibo,Ma Xingdong,Li Junru,et al.Study on influence factors of rock cavern displacement under earthquake[J].Chinese Journal of Geotechnical Engineering,2006,28(3):358-362.(in Chinese))
[9]张丽华,陶连金.节理岩体地下洞室群的地震动力响应分析[J].世界地震工程,2002,18(2):158-162.(Zhang Lihua,Tao Lianjin.Dynamic response analysis of large underground excavations in jointed rock[J].World Earthquake Engineering,2002,18(2):158-162.(in Chinese))
[10]王泳嘉,邢纪波.离散元法及其在岩土力学中的应用[M].辽宁:东北工学院出版社,1991.(Wang Yongjia,Xing Jibo.The discrete element method and its application in rock and soil mechanics[M].Liaoning:Northeast Institute of Technology Press,1991.(in Chinese))
[11]郑颖人,王永甫,王成,等.节理岩体隧道的稳定分析与破坏规律探究-隧道稳定性分析讲座之一[J].地下空间与工程学报,2011,7(4):649-656.(Zheng Yingren,Wang Yongfu,Wang Cheng,et al.Stability analysis and exploration of failure law of joint rock tunnel-Seminar on tunnel stability analysis[J].Chinese Journal of Underground Space and Engineering,2011,7(4):649-656.(in Chinese))
[12]王振,韩春,贾超,等.深埋节理岩体隧洞开挖与支护的3DEC模拟[J].水电能源科学,2013,31(6):150-152.(Wang Zhen,Han Chun,Jia Chao,et al.Three-dimensional element code simulation of high buried depth joint rock tunnel excavation and bolt support[J].Water Resources and Power,2013,31(6):150-152.(in Chinese))
[13]马行东,李海波.地震波入射方向对地下岩体洞室动态响应的初步分析[J].水力发电,2007,33(1):23-25.(Ma Xingdong,Li Haibo.Primary analysis of different incidence propagation on dynamic response of underground rock cavern under earthquake[J].Journal of Hydroelectric Engineering,2007,33(1):23-25.(in Chinese))
[14]Lin m,Kicker d,Damjancb,et al.Mechanical degradation of emplacement drifts at yucca mountain-A modeling case study-part I:Nonlithophysal rock[J].International Journal of Rock Mechanics&Mining Sciences,2007,(44):351-367.
[15]王涛,熊将,郭武祥,等.地震荷载作用下地下厂房围岩稳定的离散元计算方法研究[J].长江科学院院报,2005,26(12):58-62.(Wang Tao,Xiong Jiang,Guo Wuxiang,et al.Research on stability of rock mass around underground powerhouse cavern by discrete element method under earthquake[J].Journal of Yangtze River Scientific Research Institute,2005,26(12):58-62.(in Chinese))
[16]吕涛.地下水与地震作用下节理岩体地下洞室围岩力学响应研究[D].北京:北京工业大学,2005.(Lv Tao.Study on the mechanical response of the surrounding rock mass of the underground excavation in the jointed rock mass with the consideration groundwater and the seismic loading[D].Beijing:Beijing University of Technology,1999.(in Chinese))
[17]孙文杰,孔亮,郑颖人,等.基于安全系数的地铁车站衬砌优化设计探讨[J].地下空间与工程学报,2012,8(1):116-121.(Sun Wenjie,Kong Liang,Zheng Yingren,et al.Discussion on lining optimization design of subway station based on safety factor[J].Chinese Journal of Underground Space and Engineering,2012,8(1):116-121.(in Chinese))
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