吊江岩水电站覆盖层地基防渗墙优化设计  

Design Optimization of Cutoff Wall in Dam Foundation with Deep Overburden in Diaojiangyan Hydropower Station

作　　者：郑重阳[1] 彭辉[1] 闫秦龙[1] 刘帅[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《水力发电》2012年第12期31-34,共4页Water Power

基　　金：国家自然科学基金资助项目(50909054);湖北省自然科学基金资助项目(2008CDZ069)

摘　　要：针对当前深厚覆盖层坝基防渗墙设计过于保守及其建设工期较长的现实,以吊江岩水电站工程为例,采用有限单元法理论,对防渗墙的深度和厚度进行优化设计,研究分析了不同防渗条件下水头、坡降的变化规律;通过三维有限元分析校核其结构稳定性,定量地提出了既经济又安全的防渗墙设计方案。In view of too conservative design of cutoff wall in dam foundation with deep overburden and longer construction period of this cutoff wall at present, the design optimizations on the depth and thickness of cutoff wall are studied by FEM after taking Diaojiangyan Hydropower Station as an example. The changes of water head and hydraulic gradient under different seepage control programs are analyzed. The structural stabilities of cutoff walls are checked by 3-D FEM and an economic and safe design scheme of cutoff wall is finally proposed by quantitative method.

关 键 词：深厚覆盖层 防渗墙 有限单元法 允许渗透坡降 吊江岩水电站 

分 类 号：TV543.8[水利工程—水利水电工程]