隧道地质超前预报钻孔雷达技术及应用

Tunnel Geological Advance Prediction Drilling Radar Technology and its Application

隧道的岩溶涌水位置预测是一项非常复杂的岩溶水文地质、工程地质问题。但从大量的典型隧道岩溶涌水案例分析可以确定隧道涌水的位置是可以进行预测的。隧道岩溶涌水是由于隧道在施工过程中揭露岩溶地下水系统管道(地下河、溶洞、裂隙等)并于岩溶地下水系统相互作用的结果。因此,研究分析隧道与岩溶地下水系统之间的相互位置关系和水力联系是进行隧道岩溶涌水预测的关键。隧道处于岩溶地下水系统的不同位置,涌水及地质灾害的特点不同,选用的评价方法也不同。在此基础上,选用适宜物探方法,结合水文地质分析是可以实现隧道涌水超前预报的。

The prediction of the location of karst water gushing in tunnels is a very complicated problem of karst hydrogeology and engineering geology.However,from the analysis of a large number of typical tunnel karst water inrush cases,it can be determined that the location of tunnel water inrush can be predicted.The karst water gushing in tunnels is the result of exposing the karst groundwater system pipelines(underground rivers,karst caves,cracks,etc.)and interacting with the karst groundwater system during the construction process of the tunnel.Therefore,studying and analyzing the interrelationships and hydraulic connections between tunnels and karst groundwater systems is the key to predicting karst water inrush in tunnels.The tunnel is located at different locations in the karst groundwater system,with different characteristics of water inrush and geological disasters,and the evaluation methods used are also different.On this basis,selecting suitable geophysical methods combined with hydrogeological analysis can achieve advanced prediction of tunnel water inflow.