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岩溶是铁路、高速公路等基础设施建设的地质隐患。岩溶与周围围岩存在密度,介电常数,波速等物性差异,使得可以用地球物理方法来对其进行探测。本文介绍了在宜万铁路齐岳山隧道平导右边墙上用地震映像法进行隧道岩溶的探测情况,取得了较好的地质效果。研究表明地震映像方法是一种高效快捷的物探方法,不仅可用于铁路公路隧道隧底的岩溶勘察,也可用于隧道边墙外的岩溶勘察。
Karst is a geological hazard for the construction of infrastructure such as railway and expressway. The existence of density, dielectric constant, wave velocity and other physical properties of karst and the surrounding rock make it possible to use geophysical methods to detect it. This paper introduces the exploration of tunnel karst by the method of seismic mapping on the right guide wall of Qiyueshan tunnel of Yiwan Railway and achieves better geological effects. The study shows that the seismic mapping method is a fast and efficient geophysical exploration method. It can be used not only for karst exploration at the tunnel bottom of railway tunnels, but also for karst exploration outside the tunnel side walls.