地震视负速度法在隧道超前地质预报中的应用

Application of Seismic Negative Apparent Velocity Method to Geological Predication in Tunnel

地震视负速度法是一种快速、有效、经济的物探法超前地质预报技术,其本质是利用物性差异来解决地质问题的一种勘查方法。本文阐述了地震视负速度法技术,结合实例介绍了该方法在探明隧道掌子面前方一定距离内的地质情况的应用中所取得的实际效果,并提出了在实际应用中部分需要注意的问题。说明采用地震视负速度法从事隧道超前地质预报是一种行之有效的方法。

The negative velocity of seismic techniques is a fast, efficient and economical method in the geophysical and geological prediction technology, and the survey method is to make use of the differences of physical property to solve the geological problems. As the negative velocity of seismic techniques, combined with examples of the method introduced in the working face in front of the tunnel, this paper proved the achieved results within a certain distance of the application of geological conditions and put forward some points that should be paid attention to in the practical application. The result of application shows that the negative velocity of seismic techniques is effective in the geological prediction of the tunnel.