超前地质预报技术在隧道施工中的组合及应用

Combination and Application of Advanced Geological Forecasting Technology in the Tunnel Construction

在复杂地质条件下的隧道施工过程中,富水构造、断层破碎带及蚀变带等不良地质不仅制约了隧道正常施工,且在不同程度上影响着隧道的施工安全。本文选用“地质调查法+TSP+瞬变电磁法(Transient Electromagnetic Method,TEM)+地质雷达法+超前钻探”综合地质预报方法对侵入岩地区的某隧道开展综合地质预报,分析了掌子面工程地质与水文地质条件,为该隧道前方掌子面安全施工提供了可靠的地质资料支撑,具有十分重要的现实意义。

In the course of tunnel construction under complex geological conditions,the bad geological conditions such as water-rich structure,fault fracture zone and alteration zone not only restrict the normal construction of tunnel,but also affect the construction safety of tunnel in different degrees.In this paper,“Geological Survey Method + TSP(Tunnel Seismic Prediction) + TEM(Transient Electromagnetic Method)+ Geological Radar Method + Advanced Drilling” comprehensive geological prediction method is chosen to carry out comprehensive geological prediction of a tunnel in an intrusive rock area,this paper analyzes the engineering geological and hydrogeological conditions of the face,which provides reliable geological data for the safe construction of the face in front of the tunnel.