Beam超前地质预报技术在铜锣山隧道中的应用

APPLICATION OF AN ELECTRICAL METHOD BEAM|FOR ADVANCED GEOLOGICAL EXPLORATION TO TUNNELING IN TONGLUO MOUNTAINS FOR DIAN-LIN HIGHWAY

摘要: Beam是一种新型的电法超前预报技术,目前在国内应用很少。文章首先介绍了Beam超前地质预报方法的工作原理,然后结合Beam在国内垫邻高速公路铜锣山隧道施工中的首次应用,对该方法的具体工作过程和预报结果进行了介绍。与地质雷达、TSP预报结果以及实际开挖情况进行对比表明,Beam对掌子面前方水体具有良好的探测效果。最后对Beam在国内的推广应用提出了建议。

Abstract: The BEAM is a new kind of electrical method that is used in advanced geological exploration during tunneling It has been rarely used in China. This paper firstly introduces the operation principle of the BEAM technique, and then discusses the first application to the tunneling in TongLuo Mountain for Dian-Ling highway. The detailed work process and results are presented. Comparison among the results of BEAM, GPR, TSP and the actual case after cutting indicates that BEAM has a fairly good efficiency when there is ground water in the rock mass ahead of tunnel work face. At last, some advice is summarized on how to use this method in China.