瓦窑坡隧道岩溶地质超前预报

研究目的:瓦窑坡隧道地质条件非常复杂,处于构造剥蚀中低山区,地表溶蚀强烈,存在岩溶、冲沟浅埋段和破碎带等不良地质现象。为预防隧道塌方、突泥、突水等事故,迫切需要提高超前地质预报在岩溶隧道预报中的精度。研究结论:(1)本研究以地质法为基础,TGP206地质超前预报系统为主要手段,预报了溶洞类型、位置及规模;(2)地震反射法适用于预报长距离范围内的不良地质体的构造轮廓;(3)地质震达主要适用于短距离内的地质预报。

Advanced Karst Geological Forecast Area for Wayaopo Tunnel

Research purposes:The geological conditions of Wayaopo Tunnel are complex and unfavorable with the structural abrasion,karst,shallow-buried gully,fracture zones and so on.In order to prevent the tunnel collapse,mud irruption,water bursting and other accidents,it is necessary to enhance the precision of the geological forecast for the karst tunnel. Research conclusions:(1) Based on geology method,the type,location and scale of the karst cavity were predicted mainly by using the advanced geological forecast system TGP206.(2) The seismic reflection method was available for forecast of the structure profile of the long-distance unfavorable geological body.(3) The GPR was available for the forecast of short-distance unfavorable geological body.