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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。
The stress and seepage coupled equations are used to calculate the composite seepage control system of the composite wall film of the dam of Zhushusu Reservoir and the gravelly clay core wall. Considering the relative slip caused by the different soil materials on both sides of the composite membrane and the composite membrane having higher tensile strength and restraining soil strain, the contact units and the line units are respectively treated.