综合地质探查在洞头山隧道涌水地层中的应用

Application of Comprehensive Geological Exploration in Dongtou Mountain Tunnel Gushing in Strata

在建的武靖高速公路洞头山隧道进口右洞掌子面施工至YK37+915处时突发涌水,为探明前方地质情况,提出了采用地质调查、TSP、GPR、红外探测和超前钻探等综合地质探查手段并相互验证,取得了较为精确的成果,其技术核心内容为:(1)采用TSP法探测前方不良地质体的空间分布;(2)采用GPR法精确探测不良地质体的准确位置及范围;(3)利用红外探测仪探测周边含水构造;(4)通过超前钻探验证物探结果,对不良地质体的性质、充填物、涌水量、水压及规模等进行定量准确探测。该研究可为后续施工的技术方案提供可靠的地质资料,并为类似工程提供参考。

Dongtou mountain tunnel of Wu Jing Expressway is under construction, when the right entrance tunnel face reached YK37 ＋915, it broke out water inflow. In order to conditions ahead , this paper presents the use of geological survey , TSP , GPR , infrared detection , ad-vanced drilling and others and mutual verification , it has achieved accurate results. The core content of the technology are 1. TSP method was used to detect the spatial distribution of the unfavorable geolog-ical body; 2. Using GPR method to accurately detect the unfavorable geolfrared detector to detect the surrounding water - bearing structure; 4. The geopby advanced drilling , then the properties of adverse geological body , filling , water inflow , water pressure and its scale , were detected accurately. This study provides reliable geological dataconstruction of the technical scheme , and provides reference for similar projects.