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为合理评价孟底沟水电站渗控措施的渗控效果,针对孟底沟水电站坝址区复杂的地质条件和渗控措施,建立了厂坝区整体三维渗流有限元模型,采用排水子结构、变分不等式及自适应罚函数相结合的方法(SVA方法)研究了孟底沟厂坝区渗流特性。结果表明,现有的防渗排水系统有效降低了厂坝区地下水位,厂坝区渗漏量在渗控系统作用下得到了有效控制。研究结果可为该水电站后期运行及抽排系统设计提供依据,也可为西南高山峡谷地区类似工程提供参考。
In order to rationally evaluate the seepage control effect of Mengdinggou hydropower station seepage control measures, aiming at the complex geological conditions and seepage control measures in the dam site area of Mengdinggou hydropower station, a three-dimensional finite element model of seepage control in the dam area is established. The drainage substructure, Subdivision inequality and adaptive penalty function (SVA method) to study the seepage characteristics of Mengding ditch dam area. The results show that the existing seepage-proof drainage system effectively reduces the water table in the dam area, and the seepage volume in the dam area is effectively controlled by the seepage control system. The results of this study can provide the basis for the later operation of the hydropower station and the design of pumping system. It can also provide reference for similar projects in Southwest alpine gorge area.