铜锣山岩溶发育及隧道对地下水疏干影响特征

Karst development and tunnel effect on groundwater drainage characteristics in Tongluo mountain karst valley region

针对隔档式背斜构造岩溶山区隧道建设导致的地下水大量疏干、地表水严重漏失的问题,以重庆铜锣山玉峰山隧道附近的旱土村至关心村一带岩溶槽谷区为研究对象,通过综合分析该区域地质调查资料及玉峰山隧道建设相关资料,得出该区岩溶发育具有垂直分带性,岩溶竖向连通程度与岩层倾角具有相关性,受地质构造影响,岩溶发育呈现出各向异性,隧道轴线两侧和背斜两翼地下水疏干影响均呈现出不对称性。

Focus on the problem of groundwater drainage and surface water leakage in partition style anticline structure karst mountain area, which is initiated by tunnel constructior~, this article chooses karst trough valley among Hantu village to Guanxin village in Tongiuo mountain near the Yufeng mountain tunnel as the object. Through the comprehensive analysis of the regional geological survey data and Yufeng mountain tunnel construction information, it is concluded that the karst is developed with vertical zonality, and the karst vertical connectivity is related to the strata dip angle. Influenced by geological structure, karst development presents the property of anisotropy, the influence of groundwater drainage by tunnel construction is asymmetric on both sides of the tunnel axis and the anticline axis.