复合土工薄膜心墙坝渗流场与应力场的耦合计算

采用应力与渗流耦合方程组，对竹寿水库心墙坝应用复合土工薄膜连同砾质粘土心墙作组合防渗体进行了计算。考虑了复合膜两侧土料的不同而产生的相对滑移，及复合膜具有较高抗拉强度而抑制土体应变，分别按接触单元和线单元进行处理。

Coupling calculation of stress and seepage characteristic in composite geomembrane core-rock dams

Composite geomembrane is an ideal impermeable material because of its high mechanical strength and good anti-seepage property. Coupled equations of stress-strain and seepage are adopted in the paper to analyse and calculate the common action of stress, strain and seepage on the core dam in Zhushou reservoir in which composite geomembrane laid on upper stream sides of gravelly clay core wall was combined to prevent seepage. In view of the different property of soil at the two sides of composite geomembrane, the relative slide is considered, it can be treated according to contact element, and linear element in the calculation owing to that composite geomembrane which possesses high tensile strength can restrain the soil strain.