井间地震层析成像技术的应用  

THE APPLICATION OF CROSS-HOLE SEISMIC TOMOGRAPHY

作　　者：冯彦谦[1] 赵广茂[1] 孟宪波[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司,天津300251

出　　处：《物探与化探》2011年第3期345-348,共4页Geophysical and Geochemical Exploration

摘　　要：阐述了井间地震层析成像的正反演技术——基于最短路径法的射线追踪正演技术和基于LSQR算法的反演技术的原理,并且通过数值模型对正反演算法进行了较细致的研究,重建了地下构造原像,效果较好。结合工程应用实例,进一步表明井间地震层析成像技术能够更清晰、更客观地反映出地下构造情况,为地质结构研究和后期施工提供更详实的资料。最后,对层析成像的分辨率进行了探讨,指出了层析成像质量的影响因素。This paper explains the forward and inversion methods,which include ray-tracing based on the shortest path ray-tracing method and inversion calculation based on LSQR.The authors made detailed researches on the two algorithms,rebuilt the original image of underground structures,with fairly good effect obtained.Exemplified by engineering application,the results indicate that cross-hole seismic tomography can reflect underground conditions and also provide more concrete data for the study of geological structure and final-period construction.The resolution of the cross-hole seismic tomography is discussed,and the factors affecting the image quality are indicated.

关 键 词：井间地震 最短路径 射线追踪 LSQR算法 层析成像 

分 类 号：P631.8[天文地球—地质矿产勘探]