岩口水库岩溶渗漏除险加固防渗处理

The Research of Reinforcement Anti-seepage Treatment for Karst Leakage of Yankou Reservoir

岩口水库存在地表溶隙、洼地、落水洞等岩溶发育,加上施工质量差和库水长期反复淘刷引起铺盖层破损、开裂、跨塌等问题,建库以来渗漏严重,致使水库无法有效蓄水。为了有效解决工程渗漏问题,确保水库正常效益的发挥,根据水库渗漏现状和工程区水文地质条件,设计采用库内建坝和土工膜防渗两种工程措施进行比选。优选的土工膜结合砼防渗枢纽布置方案,能够最大限度利用现有库容,充分利用水资源,可以有效缓解火石岗乡工程性缺水严重问题。

The ineffective water storage caused by serious leakage by surface loopholes and depression,sinkhole and other karst development,poor construction quality and cover layer damage,cracking,cross-collapse by long-term flood scouring have been introduced respectively.In order to solve these problems and ensure the reservoir＇s benefit,two measures are compared and selected,which are building a new dam in the reservoir or geomembrane anti-seepage.The testing results show that geomembrane seepage control scheme can fully use the capacity of the reservoir and the water resources,which can effectively alleviate the engineering water seriously shortage problem in Huo Shigang rural.