井间地震成像技术及其在岩溶探测中的应用

摘要

Cross -well seismic is a geophysical technology, it can perspective the target body through the way that one well shots and another well receives the signal, it can invert internal structure of geological body using seismic wave traveling time and energy attenuation. In this paper, we firstly introduce the principle of cross-well seismic tomography technology and reconstruction algorithm, then set up a geological model to make the physical simulation test and use the simultaneous iterative reconstruction algorithm (SIRT) to reconstruct the single, thence the efficiency and accuracy of the algorithm is tested. Through the application of karst detecting in expressway, it shows that cross-well seismic technology has good effect in solving the practical engineering problems.%井间地震是通过井中激发,在另外一口井中接收地震波,利用地震波走时和能量衰减来反演目标体内部结构的一种地球物理方法.该文首先介绍了井间地震成像原理,重建算法；然后建立简单的地质模型进行物理模拟试验,采用同时迭代重建算法(SIRT)进行反演重建,检验该算法的效率和精度；通过某高速公路岩溶探测的应用,表明井间地震方法在解决实际工程问题上具有良好的应用效果.