高密度电阻率法在余凯高速公路岩溶隧道浅埋段地质探测中的应用研究

Application of High Density Resistivity Method in Geological Exploration of Shallow Buried Section of Yukai Expressway Karst Tunnels

岩溶隧道浅埋段因其特殊地质特征,施工开挖极可能揭露岩溶及地下水,极易发生坍塌、涌突水、涌突泥等地质灾害,严重危及施工人员安全,因此隧道施工期间对岩溶隧道浅埋段进行地质探测是十分必要的。高密度电阻率法数据采集密度大、效率高、显示直观,是岩溶隧道浅埋段地质调查中的有效方法之一。文章应用高密度电阻率法对余凯高速公路岩溶隧道浅埋段的岩溶发育特征进行探测,取得较好的地质预报效果,为隧道安全施工起到了指导作用。

Due to special geological features of shallow buried section of karst tunnels,it is very likely to expose karst and groundwater when construction of tunnel.It is prone to geological disasters such as collapse,water inrush,and muddy mud burst,which seriously endangers the safety of construction workers.Therefore,it is necessary to detect the shallow buried section of the karst tunnels during construction.As one of the effective methods in the investigation of shallow buried section of karst tunnels,the high-density resistivity method has advantages such as high data collection density,high efficiency and intuitive display.In this paper,the high-density resistivity method was used to detect the karst development characteristics of the shallow-buried section of Yukai high-speed karst tunnels,and good geological prediction results have been obtained,which has played a guiding role in tunnel safety construction.