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采用邓肯张材料本构模型和渗流的流固耦合方法对土石坝复合土工膜防渗问题进行了计算和分析。主要分析了复合土工膜作为土石坝的防渗体时,坝体在竣工期和稳定渗流期能否满足安全要求,土工膜能否有效降低坝体内的浸润线,并对土工膜面板防渗方案和心墙防渗方案进行对比。结果表明,土工膜做为防渗体能够使大坝满足安全运行的要求,土工膜心墙防渗方案在应力应变和防渗方面要优于土工膜面板防渗方案。
Duncan Zhang constitutive model and seepage fluid-structure interaction method are used to calculate and analyze seepage prevention of earth-rock dam composite geomembrane. When the composite geomembrane as a seepage control body of earth-rock dam is mainly analyzed, whether the dam can meet the safety requirements during the completion and steady seepage periods can effectively reduce the wetting line in the dam, and the geomembrane anti-seepage plan Contrast with the anti-seepage plan of the core wall. The results show that the geomembrane as a seepage control body can make the dam meet the requirements of safe operation. The geomembrane core seepage control scheme is better than the geomembrane anti-seepage scheme in terms of stress, strain and seepage prevention.