微震定位原理与实现
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摘要
根据震源定位的基本算法,编制了基于M atlab的震源定位程序。用实际工程中监测到的微震数据进行震源定位,展示了震源点分布的三维图像,定位结果与震源实际位置和S irose is软件的定位结果进行比较,验证了本程序的实用性。介绍了微地震监测技术及其研究现状。采用P波到时为主要指标,对监测到的地震波形进行分析,讨论了数据优化组合的方式及其对定位精度的影响。详细介绍了微震定位算法、及其实现过程和实现结果,分析了定位误差的原因。
According to the basic algorithm of source location,a Matlab-based positioning procedure of the source was established.The Microseismic monitoring data of practical projects were used for source positioning.The 3D groups of the location were displayed.The positioning results and the actual source location are compared with the results by Siroseis software to verify the practicality of the procedure.The micro-seismic monitoring technology and its research status were researched.The arrival time of P wave was the main parameter to discuss the microseismic waveform.The way of data optimization grouping and its impact on the positioning accuracy were discussed.The microseism location algorithm and its process and outcome of the realization were introduced in detail,and the reason of the location error was described.
According to the basic algorithm of source location,a Matlab-based positioning procedure of the source was established.The Microseismic monitoring data of practical projects were used for source positioning.The 3D groups of the location were displayed.The positioning results and the actual source location are compared with the results by Siroseis software to verify the practicality of the procedure.The micro-seismic monitoring technology and its research status were researched.The arrival time of P wave was the main parameter to discuss the microseismic waveform.The way of data optimization grouping and its impact on the positioning accuracy were discussed.The microseism location algorithm and its process and outcome of the realization were introduced in detail,and the reason of the location error was described.
引文
[1]彭新明,孙友宏,李安宁.岩石声发射技术的应用现状[J].世界地质,2000,19(3):303-306.
[2]于克君,骆循,张兴民.煤层顶板“两带”高度的微地震监测技术[J].煤田地质与勘探,2002,30(1):47-51.
[3]Rutledge J T,Phillips W S,House L S,et a1.Microseismic map-ping of a Cotton Valley hydraulic fracture using decimated down-holearrays,ExpandedAbstracts[M].NewOrleans:Ann InternatMtg SOc Explor Geophys.1998.
[4]姜福兴,Luo Xun,杨淑华.采场覆岩空间破裂与采动应力场的微震探测研究[J].岩土工程学报,2003,25(1):23-25.
[5]姜福兴,杨淑华,Luo Xun.微地震监测揭示的采场围岩空间破裂形态[J].煤炭学报,2003,28(4):357-360.
[6]姜福兴,Luo Xun.微震监测技术在矿井岩层破裂监测中的应用[J].岩土工程学报,2002,24(2):147-149.
[2]于克君,骆循,张兴民.煤层顶板“两带”高度的微地震监测技术[J].煤田地质与勘探,2002,30(1):47-51.
[3]Rutledge J T,Phillips W S,House L S,et a1.Microseismic map-ping of a Cotton Valley hydraulic fracture using decimated down-holearrays,ExpandedAbstracts[M].NewOrleans:Ann InternatMtg SOc Explor Geophys.1998.
[4]姜福兴,Luo Xun,杨淑华.采场覆岩空间破裂与采动应力场的微震探测研究[J].岩土工程学报,2003,25(1):23-25.
[5]姜福兴,杨淑华,Luo Xun.微地震监测揭示的采场围岩空间破裂形态[J].煤炭学报,2003,28(4):357-360.
[6]姜福兴,Luo Xun.微震监测技术在矿井岩层破裂监测中的应用[J].岩土工程学报,2002,24(2):147-149.
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