摘要
以德江隧道出口段岩溶蓄水构造为研究对象,在岩溶水文地质调查的基础上,我们论述了岩溶地貌类型、岩溶及岩溶蓄水构造特征,分析了隧道区内岩溶蓄水构造与隧道的水力关系。对德江隧道出口段进行了分区段水文地质评价。同时,采用大气降水入渗系数法和地下水疏干法,对地下河及管道型蓄水构造的影响段(隧道ZK9+650~ZK10+500段)进行涌水量预测,涌水量达18.25 ×104 m3/d。该研究成果为隧道防治水设计提供了依据。
Taking the karst water storage structure in the exit section of Dejiang tunnel as the research ob-ject, based on the karst hydrogeological survey, we discussed and analyzed the karst landform types, the characteristics of karst and karst water storage structure, and analyzed the hydraulic relationship between the karst water storage structure and the tunnel. Further, we conducted hydrogeological evaluation of the exit section of Dejiang tunnel. Meanwhile, the methods of atmospheric precipitation infiltration coefficient and groundwater drainage are used to predict the water inflow of the affected section (tunnel ZK9+650~ZK10+500), where there is underground river and pipeline-typed water storage structure, and the water inflow reaches 18.25 ×104 m3/d. The research results provide a basis for the design of tunnel water control.
