混凝土面板堆石混合坝性状的预测

Prediction of performance of concrete face rockfill dam combined with toe retaining wall

对宜兴抽水蓄能电站上水库主坝施工期性状进行了监测,基于原型观测资料采用反分析对本构模型及其参数进行了验证,在此基础上,采用数值分析、土工离心模型试验和原型观测相结合的方法预测了带有坝趾挡墙的混凝土面板堆石混合坝的应力变形性状和抗滑稳定性。结果表明:混凝土面板堆石混合坝是一种适合于复杂地形条件的、特别是适合于抽水蓄能电站上水库条件的理想坝型。

The performance of the main dam of the head reservoir at construction stage is observed for Yixing Pumped Storage Power Station. The constitutive model and calculating parameters are verified using the back analysis based on the prototype observation data. Its stress-deformation behaviors and stability against sliding are predicted using a combined method with numerical calculation, geotechnical centrifugal model tests and prototype observation. It is concluded that the concrete face rockfill dam combined with toe retaining walls is a good dam type suitable for complex topographical conditions, especially for head reservoir conditions of pumped storage power stations.