东庄水库岩溶渗漏与防渗研究进展  

Advances in Research on Karst Leakage and Anti-seepage Design of Dongzhuang Reservoir

作　　者：李清波[1] 万伟锋[1] 王泉伟[1] 周益民[1] 戴其祥[1] 邹剑峰[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《资源环境与工程》2015年第5期671-676,共6页Resources Environment & Engineering

摘　　要：东庄水库渗漏问题是制约东庄水库建设的三大技术问题之一。回顾了60余年勘测设计历程及各个阶段关于岩溶渗漏问题的认识,对2010年以后新一轮勘测设计工作取得的成果进行了总结:东庄水库工程区不具备发育古、老岩溶的背景条件,主要为第四纪以来沿河谷发育的近代岩溶,没有连通的管道系统,库坝区地下水位主要受坝址下游风箱道泉群排泄基准控制,悬托河仅出现在河床及近岸地段,两岸远处存在地下水分水岭,岩体透水性总体上随高程降低而减弱,河床高程以下主要为微—弱透水岩体,有"底"可寻。综合勘察研究成果表明东庄坝址具备成库建坝条件。水库蓄水后主要渗漏途径为坝基及左右坝肩绕坝渗漏,为溶隙型渗漏,对水库的防渗方案宜采用坝基防渗与坝肩延伸防渗方案。The karst leakage is one of three key technological problems that restrict the construction of Dongzhuang reser -voir.By reviewing the investigation and study of karst leakage in past 60 years,the new investigation and study achieve-ments after 2010 are summarized .Dongzhuang reservoir had no development conditions of paleo-karst and old-karst .The karst in the reservoir region mainly developed along the river since the Quaternary and had no karst pipe system .The groundwater level is controlled by the discharge datum level of Fengxiangdao springs .Hanging river only distributes along the river bank and riverbed .Groundwater watershed exist far away both sides of dam site .On the whole ,the rock permea-bility decreases with the fall of the elevation .And the rock below the riverbed elevation is micro permeable and weak per-meable.So the reservoir can reach its bottom .Comprehensive investigation and research results show that the Dongzhuang dam site has the conditions for construction of reservoir and dam .Dam foundation and abutment will be the main seepage path through dissolved-fissure after impoundment of Dongzhuang reservoir .Therefore the seepage control scheme of dam foundation seepage control and extended abutment seepage control is suitable for the reservoir .

关 键 词：东庄水库 岩溶 渗漏 防渗 

分 类 号：P642.25[天文地球—工程地质学] TV697.32[天文地球—地质矿产勘探]