南水北调与水利科技Issue(2)：160-163,174,5.DOI:10.13476/j.cnki.nsbdqk.2014.02.038
复合土工膜库盆防渗上水库应力变形性态分析
Deformation and Stress Behavior Analysis of Upper Reservoir with Composite Geo-membrane as Impermeable Material
摘要
Abstract
The deformation of dams and reservoir basin of upper reservoir at the pumped storage power station can affect the an-ti-seepage structure and effects .The dam of upper reservoir at a pumped storage power station is a concrete faced rockfill dam and the impermeable material of reservoir bottom is composite geo-membrane .Aiming at the dam and the reservoir basin ,the 3-D non-linear finite element model was developed to simulate the filling process of the dam and backfill and the storage process of the reservoir .The deformation and stress of the dam ,backfill ,and composite geo-membrane were analyzed ,and the rationality of the structural design was demonstrated .The results showed that the displacement distribution and stress distribution of the dam were reasonable .The option on composite geo-membrane was reasonable as the safety factors met standard requirements .The composite geo-membrane can adapt to the deformation of the backfill very well without the occurrence of disengaging phenome-non .Emphasis should be put in the dividing area of backfill and bedrock as the gradient of the normal displacement equipotential line of composite geo-membrane was large and tensile stress was high .关键词
抽水蓄能电站/上水库/面板堆石坝/复合土工膜/应力变形/非线性有限元法Key words
pumped storage power station/upper reservoir/CFRD/composite geo-membrane/stress and deformation/Non-linear FEM分类
建筑与水利引用本文复制引用
周奕琦,沈振中,王伟,马秀伟,彭迪..复合土工膜库盆防渗上水库应力变形性态分析[J].南水北调与水利科技,2014,(2):160-163,174,5.基金项目
河海大学水文水资源与水利工程科学国家重点实验室专项基金 （）
