跨孔地震波波场数值模拟
|
摘要
基于跨孔测量方式分辨率高、探测范围广、结果图像直观等特点,本研究基于前人的工作选用有限差分方法进行跨孔地震波波动方程数值模拟,通过对模型采用边界吸收等处理,最后获得地震波在地下介质中传播的波场快照以及检波器接收记录。主要通过对断层、低速球、层状介质三种模型透射波波场特征的探讨,研究地下地质体结构,并且在方法上验证了有限差分法是一种计算速度快、占用内存小、编程简单的方法,在理论上验证了跨孔地震方法受外界干扰因素影响小,可推断、了解地质构造,为工程勘察提供依据。
Due to the advantages of high resolution,wide detection range and strong visualization of resulting images of cross-hole measurement method,based on the previous work,this study uses the finite difference method( FDM) to simulate seismic wave equation,treat the model by absorbing boundary conditions,obtain the wave field snapshots of seismic wave propagation in the subsurface and the data record. Through the research on the transmission wave field characteristics of three model include fault model,sphere of low wave velocity model and layered model,the underground geological structure is studied and the finite difference method is proved fast in calculation,small in memory cost and simple programming. Furthermore,cross-hole seismic method is easy to be performed and has strong robust to external disturbance,it provides a basis not only for inferring,understanding subsurface geological structure,but also provide a basis for engineering investigation.
Due to the advantages of high resolution,wide detection range and strong visualization of resulting images of cross-hole measurement method,based on the previous work,this study uses the finite difference method( FDM) to simulate seismic wave equation,treat the model by absorbing boundary conditions,obtain the wave field snapshots of seismic wave propagation in the subsurface and the data record. Through the research on the transmission wave field characteristics of three model include fault model,sphere of low wave velocity model and layered model,the underground geological structure is studied and the finite difference method is proved fast in calculation,small in memory cost and simple programming. Furthermore,cross-hole seismic method is easy to be performed and has strong robust to external disturbance,it provides a basis not only for inferring,understanding subsurface geological structure,but also provide a basis for engineering investigation.
引文
[1]陆基孟.地震勘探原理[M].山东:石油大学出版社,1993,1~2.
[2]肖玉辉,朱自强,鲁光银.岩溶地区高速公路路基探测与处理技术探讨[J].公路,2004,(4):19~23.
[3]周峻峰,刘四新,吴俊军.跨孔雷达探测地下异常体的数值模拟[J].吉林大学学报,2008,38(增刊):147~149.
[4]邱庆程,李伟和.跨孔地震CT层析成像在岩溶勘察中的应用[J].物探与化探,2001,25(3):236~240.
[5]McCann D M,Jackson P D,Culshaw M G.The use of geophysical surveying methods in the detection of natural cavities and mineshafts[J].Quarterly Journal of Engineering Geology,London,1987,59~73.
[6]Goulty N R,Thatcher J S,Findlay M J et al.Experimental investigation of cross hole seismic techniques for shallow coal exploration[J].Quarterly Journal of Engineering Geology,1990,217~228.
[7]Herwanger J V,Worthington M H,Lubbe R et al.A comparison of cross-hole electrical and seismic data in fractured rock[J].Geophysical Prospecting,2004,109~121.
[8]成谷,马在田,耿建华.地震层析成像发展回顾[J].勘探地球物理进展,2002,(6):6~12.
[9]张平松,李永盛,杨华忠.硬岩深孔爆破破坏范围地震CT测试[J].工程勘察,2012,40(5):30~33.
[10]季颖,陈颙.跨孔衍射层析成像技术[J].CT理论与应用研究,1991,(2):10~17.
[11]朱秀知,曾江.跨孔超地震波在混凝土灌注桩质量检测中的应用[J].中国煤田地质,2001,13(4):64~73.
[12]甘伏平,喻立平,卢呈杰等.岩溶区利用地震速度成像研究地下地质结构及特征[J].工程勘察,2012,40(8).
[13]孙宇,肖宽怀,赵永贵.地震CT勘探原理及其在公路隧道病害诊断中的应用[J].工程地质学报,2003,11(3):440~444.
[14]赵虎,李瑞,刘钰泉.跨孔弹性波CT在公路隧道病害诊断中的应用[J].新疆地质,2007,25(2):221~224.
[15]姬继法,潘纪顺.应用地质雷达探测小型不良地质体中的应用[J].地质与勘探,2002,38(1):80~82.
[16]李大宝.计算声学·声场的方程和计算方法[M].北京:科学出版社,2005.
[17]陈敬国.有限差分法地震波场数值模拟中的吸收边界条件[EB/OL].中国科技论文在线,2006.http://www.paper.edu.cn.
[18]云美厚,丁伟.地震子波频率浅析[J].石油物探,2005,44(6):578~581.
[19]邵秀民,刘臻.带吸收边界条件的地震波方程显式差分格式的稳定性分析[J].计算数学,2001,23(2):163~186.
[20]孙若昧.地震波传播有限差分模拟的人工边界问题[J].地球科学进展,1996,11(3):53~58.
[21]Clayton R,Enquist B.Absorbing boundary conditions for acoustic and elastic wave equations[J].Bull Seis Soc Am,1977,67(6):1529~1540.
[22]Reynolds.Boundary conditions for the numerical solution of wave propagation problems[J].Geophysics,1978,43(6):1099~1110.
[23]Kosloff R,Kosloff D.Absorbing boundaries for wave propagation problem[J].Comput Phys,1986,363~376.
[2]肖玉辉,朱自强,鲁光银.岩溶地区高速公路路基探测与处理技术探讨[J].公路,2004,(4):19~23.
[3]周峻峰,刘四新,吴俊军.跨孔雷达探测地下异常体的数值模拟[J].吉林大学学报,2008,38(增刊):147~149.
[4]邱庆程,李伟和.跨孔地震CT层析成像在岩溶勘察中的应用[J].物探与化探,2001,25(3):236~240.
[5]McCann D M,Jackson P D,Culshaw M G.The use of geophysical surveying methods in the detection of natural cavities and mineshafts[J].Quarterly Journal of Engineering Geology,London,1987,59~73.
[6]Goulty N R,Thatcher J S,Findlay M J et al.Experimental investigation of cross hole seismic techniques for shallow coal exploration[J].Quarterly Journal of Engineering Geology,1990,217~228.
[7]Herwanger J V,Worthington M H,Lubbe R et al.A comparison of cross-hole electrical and seismic data in fractured rock[J].Geophysical Prospecting,2004,109~121.
[8]成谷,马在田,耿建华.地震层析成像发展回顾[J].勘探地球物理进展,2002,(6):6~12.
[9]张平松,李永盛,杨华忠.硬岩深孔爆破破坏范围地震CT测试[J].工程勘察,2012,40(5):30~33.
[10]季颖,陈颙.跨孔衍射层析成像技术[J].CT理论与应用研究,1991,(2):10~17.
[11]朱秀知,曾江.跨孔超地震波在混凝土灌注桩质量检测中的应用[J].中国煤田地质,2001,13(4):64~73.
[12]甘伏平,喻立平,卢呈杰等.岩溶区利用地震速度成像研究地下地质结构及特征[J].工程勘察,2012,40(8).
[13]孙宇,肖宽怀,赵永贵.地震CT勘探原理及其在公路隧道病害诊断中的应用[J].工程地质学报,2003,11(3):440~444.
[14]赵虎,李瑞,刘钰泉.跨孔弹性波CT在公路隧道病害诊断中的应用[J].新疆地质,2007,25(2):221~224.
[15]姬继法,潘纪顺.应用地质雷达探测小型不良地质体中的应用[J].地质与勘探,2002,38(1):80~82.
[16]李大宝.计算声学·声场的方程和计算方法[M].北京:科学出版社,2005.
[17]陈敬国.有限差分法地震波场数值模拟中的吸收边界条件[EB/OL].中国科技论文在线,2006.http://www.paper.edu.cn.
[18]云美厚,丁伟.地震子波频率浅析[J].石油物探,2005,44(6):578~581.
[19]邵秀民,刘臻.带吸收边界条件的地震波方程显式差分格式的稳定性分析[J].计算数学,2001,23(2):163~186.
[20]孙若昧.地震波传播有限差分模拟的人工边界问题[J].地球科学进展,1996,11(3):53~58.
[21]Clayton R,Enquist B.Absorbing boundary conditions for acoustic and elastic wave equations[J].Bull Seis Soc Am,1977,67(6):1529~1540.
[22]Reynolds.Boundary conditions for the numerical solution of wave propagation problems[J].Geophysics,1978,43(6):1099~1110.
[23]Kosloff R,Kosloff D.Absorbing boundaries for wave propagation problem[J].Comput Phys,1986,363~376.
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