地震层析成像方法及其在岩体结构研究中的应用

SEISMIC TOMOGRAPHY AND ITS APPLICATIOMN TO ROCK MASS STRUCTURE STUDY

根据岩体结构理论 ,软弱结构面对岩体变形与破坏具有优先控制作用 ,它与围岩在地震波传播性质 (波速与衰减特性 )上的差别 ,可以利用地震层析成像技术 ,对它进行空间定位 ,进而研究岩体的内部结构特征。针对岩体结构研究的特点 ,本文提出将地震波走时成像方法与地震波衰减成像方法 (振幅与脉冲宽度 )集成到一个处理流程中 ,实现了岩体结构的综合成像方法。

According to the rock mass structure theory, weak structural face plays a prior control role in rock mass deformation and fracture. It is different in seismic wave propagation characteristics (velocity and attenuation) from surrounding intact rocks, so we can use seismic tomography to determine the spacfial location of weak structural face, and hence to study structural characteristics of rock mass. For study of rock mass structure, we combined the seismic wave travel time tomography and the seismic wave attenuation tomography into an integrated method for detecting weak structural interfaces occuring in rock mass.