多种勘探测试方法在隧道水文地质勘察中的应用研究以云南省宜良至石林高速公路山冲箐隧道为例

当拟建隧道从地表水体底部穿越时，隧道建设对地表水体的疏干和地表水体渗漏对隧道的施工、运行的影响是建设者特别关注的问题。本次水文地质勘察工作采用了水文地质测绘、水文地质钻探、抽水试验、压水试验、现场多参数水质分析仪测试、室内水质全分析试验、钻孔波速测试等工作手段。通过多种勘探测试方法，查明了隧道区洞身段青草凹水库、清水沟水库的水文地质条件。青草凹水库、清水沟水库地表水与钻孔内地下水水力联系不明显。隧道开挖对青草凹水库、清水沟水库影响小，地表水体对隧道涌水量影响小。采用多种勘探测试方法能较好地查清地下工程与地表水体的相互影响关系。在类似项目的地下水含水介质研究及相关的勘察中具有较大的推广和应用价值。

APPLICATION OF VARIOUS EXPLORATION METHODS IN TUNNEL HYDROGEOLOGICAL INVESTIGATIONA CASE STUDY OF SHANCHONGJIN TUNNEL IN YILIANG TO SHILIN HIGHWAY,YUNNAN

When the proposed tunnel passes through the bottom of the surface water body, the influence of the surface water drainage and the leakage of the surface water body on the tunnel construction and operation is a special concern for the builders. In the tunnel hydrogeological investigation, hydrogeological survey, hydrogeological drilling, pumping test, water pressure test, field multi parameter water quality analyzer test, indoor water quality analysis test, drilling wave speed test were applied. The hydrogeological conditions of Qingcaoao reservoir and Qingshuigou reservoir in the tunnel area were identified through various exploration and testing methods. The hydraulic connection between the surface water of Qingcao'ao reservoir and Qingshuigou reservoir is not obvious. Tunnel excavation has little influence on Qingcao'ao reservoir and Qingshuigou reservoir, and surface water had little influence on tunnel water inflow. A variety of exploration methods can better identify the interaction between underground works and surface water bodies. It has great popularization and application value in the study of groundwater aquifer media and related investigation in the similar projects.