喀斯特地区抽水蓄能电站上水库防渗标准浅析

Seepage control standard for head reservoir of pumped-storage hydropower station in karst area

琅琊山抽水蓄能电站上水库是国内第一座建于喀斯特地区并采用局部防渗处理的抽水蓄能电站水库,库区喀斯特发育,渗漏问题突出。为当探寻合理可行的防渗控制标准,采用三维有限元渗流场和喀斯特地区地下水汇流理论等计算分析手段,对库区渗漏量进行了定量分析计算研究,认为将日渗漏量占总库容的比值控制在0.5‰以下,在技术和经济上是可行的,也是比较合适的渗漏控制标准。

The head reservoir of Langyashan Pumped- storage Hydropower Station is the first domestic pumped- storage reservoir in karst area which adopts partial seepage treatment. Due to the karst topography,seepage problem occurs frequently in the reservoir. To find out a proper and viable seepage control standard,a quantitive study on seepage discharge in the reservoir area is conducted by the means of three- dimensional finite element analysis of the seepage field and ground water confluence theory in karst area. According to the result,it is technically and economically feasible to set the daily seepage discharge below 0. 5‰of the gross reservoir storage capacity,which is also a proper seepage control standard.