西藏旁多水利枢纽坝基深厚覆盖层防渗分析论证

旁多工程坝基覆盖层深厚。防渗面积大，且处于4000m以上的高海拔地区。因此，坝基防渗形式的选择合理与否是个关键问题。为此。通过比较灌浆帷幕、混凝土防渗墙、上墙下幕以及悬挂式防渗墙等方案，从防渗可靠性、施工技术条件、电力资源损失、运行检修条件及工程投资等诸多方面进行了综合比较，优选出坝基防渗的最佳方案。

Analysis and demonstration of deep overburden seepage for dam foundation of Pangduo hydro project in Tibet

The Pangduo hydro project has deep overburden and large anti-seepage area,which is located in the high altitude area more than 4000m.Therefore,how to reasonably select the anti-seepage pattern of dam founda-tion is the key to the problems.By comparing these schemes of the curtain grouting,the concrete anti-seepage wall,upper wall and down curtain,hanging type anti-seepage wall,etc.the paper selects the optimum scheme of dam foundation anti-seepage by the comprehensive comparison from the many aspects of ant...