地震波在巷道弹塑性围岩中传播规律的数值模拟研究
|
摘要
基于有限元动力分析软件ANSYS/LS-DYNA模拟了地震波在具有初始应力情况下的巷道弹塑性围岩介质中的传播过程,分析了该条件下地震波在巷道周边的传播衰减规律。研究结果表明:随着传播距离的增加,地震波传播呈负指数函数关系衰减;地震波加速度幅值在近源场衰减速度快,远源场衰减减缓;当巷道正前方发生挠动时,随着离巷帮的距离越远,地震波加速度幅值越小;巷道围岩的弹、塑性应力状态也是影响地震波传播过程的一个重要因素,在弹塑性围岩介质中传播时,地震波能量的损耗主要是由于波形的几何扩展和介质的塑性变形引起的。
Based on the finite element dynamic analysis software ANSYS/LS-DYNA,the propagation process of seismic waves in the elastoplastic tunnel rock under initial stress was simulated,and the propagation and attenuation laws of seismic waves around tunnel were analyzed.The results indicate that:the amplitude attenuates by negative exponential law with seismic wave spreading in the coal and rock;the acceleration amplitude of seismic wave decays rapidly in near field and slowly in far field;when the perturbation is occurred in the dead ahead of tunnel,the further the distance between the point and the tunnel is,the smaller the acceleration of seismic wave is;the elastic and plastic stress state of tunnel rock is also an important factor to affect propagation process of seismic wave.The energy of seismic wave is mainly consumed because of geometric spreading of waveform and plastic deformation of medium.
Based on the finite element dynamic analysis software ANSYS/LS-DYNA,the propagation process of seismic waves in the elastoplastic tunnel rock under initial stress was simulated,and the propagation and attenuation laws of seismic waves around tunnel were analyzed.The results indicate that:the amplitude attenuates by negative exponential law with seismic wave spreading in the coal and rock;the acceleration amplitude of seismic wave decays rapidly in near field and slowly in far field;when the perturbation is occurred in the dead ahead of tunnel,the further the distance between the point and the tunnel is,the smaller the acceleration of seismic wave is;the elastic and plastic stress state of tunnel rock is also an important factor to affect propagation process of seismic wave.The energy of seismic wave is mainly consumed because of geometric spreading of waveform and plastic deformation of medium.
引文
[1]谭学术.矿井复杂动力现象研究[M].重庆:重庆大学出版社,1992.Tan Xueshu.Study on complex mining dynamic phenomenon[M].Chongqing:Chongqing University Press,1992.
[2]王俊平,陈宝心.爆破地震波作用下建筑物的动力响应分析方法[J].西部探矿工程,2005(9):134-137.Wang Junping,Chen Baoxin.Analysis method of dynamic response ofbuilding under blasting seismic wave[J].West-China ExplorationEngineering,2005(9):134-137.
[3]许增会,宋宏伟,赵坚.地震对隧道围岩稳定性影响的数值模拟分析[J].中国矿业大学学报,2004,33(1):41-44.Xu Zenghui,Song Hongwei,Zhao Jian.Numerical analysis of stabilityof tunnel surrounding rocks under earthquake[J].Journal of ChinaUniversity of Mining&Technology,2004,33(1):41-44.
[4]国胜兵,潘越峰,高培正,等.爆炸地震波模拟研究[J].爆炸与冲击,2005,25(4):335-340.Guo Shengbing,Pan Yuefeng,Gao Peizheng,et al.Numerical simula-tion of explosion seismic waves[J].Explosion and Shock Wave,2005,25(4):335-340.
[5]钟放庆,靳平,李孝兰,等.地下爆炸地震波的数值模拟及震源函数的研究[J].爆炸与冲击,2001,21(1):53-56.Zhong Fangqing,Jin Ping,Li Xiaolan,et al.Seismic wave simulationsand seismic functions for underground explosions[J].Explosion andShock Wave,2001,21(1):53-56.
[6]Walsh J B.Seismic waves attenuation in rock due to triction[J].JGR,1966,71:2 591.
[7]胡千庭,赵同彬,邹银辉,等.地下工程弹塑性介质模型的地震波衰减模拟[A].2006(沈阳)国际安全科学与技术学术研讨会论文集[C].沈阳:辽宁科学技术出版社,2006.Hu Qianting,Zhao Tongbin,Zou Yinhui,et al.Simulation of seismicwave attenuation on elastic-plastic model in the underground engi-neering[A].Proceedings of 2006(Shenyang)International Collo-quium on Safety Science and Technology[C].Shenyang:LiaoningScience&Technology Press,2006.
[8]杨军,尚昊,郭志昆.软土隧道地震反应的数值分析[J].建筑技术开发,2003,30(11):27-28.Yang Jun,Shang Hao,Guo Zhikun.FEA method of seismic responseabout the tunnel in soft soil[J].Building Technique Development,2003,30(11):27-28.
[9]Zhao Tongbin,Li Jiangong,Xiao Yaxun,et al.Propagation simulationand attenuation law analysis of seismic wave in elastoplastic tunnelrock medium[J].Journal of Coal Science&Engineering(China),2007,13(4):503-506.
[10]李建功.应力波在弹塑性煤岩体中传播衰减规律研究[D].青岛:山东科技大学,2008.Li Jiangong.Study on the stress wave propagation attenuation lawsin the elastoplastic coal and rock[D].Qingdao:Shandong Universi-ty of Science and Technology,2008.
[11]邹银辉.煤岩体声发射传播机理研究[D].青岛:山东科技大学,2007.Zou Yinhui.Study of AE signal propagation mechanism of rock andcoal[D].Qingdao:Shandong University of Science and Technolo-gy,2007.
[12]时党勇,李裕春,张胜民.基于ANSYS/LS-DYNA8.1进行显式动力分析[M].北京:清华大学出版社,2005.Shi Dangyong,Li Yuchun,Zhang Shengmin.Explicit dynamic anal-ysis based on ANSYS/LS-DYNA8.1[M].Beijing:Tsinghua Uni-versity Press,2005.
[13]Zou Yinhui.The study of acoustic emission(AE)forecasting coaland rock disaster technique[J].Journal of coal Science&Engi-neering(China),2009,15(2):157-160.
[14]文光才,李建功,邹银辉,等.矿井煤岩动力灾害声发射监测适用条件初探[J].煤炭学报,2011,36(2):278-282.Wen Guangcai,Li Jiangong,Zou Yinhui,et al.Preliminary study onthe application conditions of acoustic emission monitoring dynamicdisasters in coal and rock[J].Journal of China Coal Society,2011,36(2):278-282.
[15]Wen Guangcai,Li Jiangong,Yang Huiming,et al.Theory analysisand experimental study on propagationl laws of acoustic emission incoal and rock[A].2010 International Conference on Mine HazardsPrevention and Control[C].2010:757-763.
[2]王俊平,陈宝心.爆破地震波作用下建筑物的动力响应分析方法[J].西部探矿工程,2005(9):134-137.Wang Junping,Chen Baoxin.Analysis method of dynamic response ofbuilding under blasting seismic wave[J].West-China ExplorationEngineering,2005(9):134-137.
[3]许增会,宋宏伟,赵坚.地震对隧道围岩稳定性影响的数值模拟分析[J].中国矿业大学学报,2004,33(1):41-44.Xu Zenghui,Song Hongwei,Zhao Jian.Numerical analysis of stabilityof tunnel surrounding rocks under earthquake[J].Journal of ChinaUniversity of Mining&Technology,2004,33(1):41-44.
[4]国胜兵,潘越峰,高培正,等.爆炸地震波模拟研究[J].爆炸与冲击,2005,25(4):335-340.Guo Shengbing,Pan Yuefeng,Gao Peizheng,et al.Numerical simula-tion of explosion seismic waves[J].Explosion and Shock Wave,2005,25(4):335-340.
[5]钟放庆,靳平,李孝兰,等.地下爆炸地震波的数值模拟及震源函数的研究[J].爆炸与冲击,2001,21(1):53-56.Zhong Fangqing,Jin Ping,Li Xiaolan,et al.Seismic wave simulationsand seismic functions for underground explosions[J].Explosion andShock Wave,2001,21(1):53-56.
[6]Walsh J B.Seismic waves attenuation in rock due to triction[J].JGR,1966,71:2 591.
[7]胡千庭,赵同彬,邹银辉,等.地下工程弹塑性介质模型的地震波衰减模拟[A].2006(沈阳)国际安全科学与技术学术研讨会论文集[C].沈阳:辽宁科学技术出版社,2006.Hu Qianting,Zhao Tongbin,Zou Yinhui,et al.Simulation of seismicwave attenuation on elastic-plastic model in the underground engi-neering[A].Proceedings of 2006(Shenyang)International Collo-quium on Safety Science and Technology[C].Shenyang:LiaoningScience&Technology Press,2006.
[8]杨军,尚昊,郭志昆.软土隧道地震反应的数值分析[J].建筑技术开发,2003,30(11):27-28.Yang Jun,Shang Hao,Guo Zhikun.FEA method of seismic responseabout the tunnel in soft soil[J].Building Technique Development,2003,30(11):27-28.
[9]Zhao Tongbin,Li Jiangong,Xiao Yaxun,et al.Propagation simulationand attenuation law analysis of seismic wave in elastoplastic tunnelrock medium[J].Journal of Coal Science&Engineering(China),2007,13(4):503-506.
[10]李建功.应力波在弹塑性煤岩体中传播衰减规律研究[D].青岛:山东科技大学,2008.Li Jiangong.Study on the stress wave propagation attenuation lawsin the elastoplastic coal and rock[D].Qingdao:Shandong Universi-ty of Science and Technology,2008.
[11]邹银辉.煤岩体声发射传播机理研究[D].青岛:山东科技大学,2007.Zou Yinhui.Study of AE signal propagation mechanism of rock andcoal[D].Qingdao:Shandong University of Science and Technolo-gy,2007.
[12]时党勇,李裕春,张胜民.基于ANSYS/LS-DYNA8.1进行显式动力分析[M].北京:清华大学出版社,2005.Shi Dangyong,Li Yuchun,Zhang Shengmin.Explicit dynamic anal-ysis based on ANSYS/LS-DYNA8.1[M].Beijing:Tsinghua Uni-versity Press,2005.
[13]Zou Yinhui.The study of acoustic emission(AE)forecasting coaland rock disaster technique[J].Journal of coal Science&Engi-neering(China),2009,15(2):157-160.
[14]文光才,李建功,邹银辉,等.矿井煤岩动力灾害声发射监测适用条件初探[J].煤炭学报,2011,36(2):278-282.Wen Guangcai,Li Jiangong,Zou Yinhui,et al.Preliminary study onthe application conditions of acoustic emission monitoring dynamicdisasters in coal and rock[J].Journal of China Coal Society,2011,36(2):278-282.
[15]Wen Guangcai,Li Jiangong,Yang Huiming,et al.Theory analysisand experimental study on propagationl laws of acoustic emission incoal and rock[A].2010 International Conference on Mine HazardsPrevention and Control[C].2010:757-763.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心