【摘要】 根据渗流分析确定了老虎嘴水电站左岸防渗墙上下游的水压力荷载,应用非线性有限元计算得到了施工期、蓄水期以及地震情况下的坝基沉降和防渗墙位移、应力等,论证了该方案在技术上是合理可行的。采用渗流分析所得的防渗墙上下游水压力作为结构分析的荷载,计算结果能更准确地反映防渗墙的实际受力情况。更多还原

【Abstract】 The structure of the 80 m hight impervious wall in left bank of Laohuzui Hydropower station is complex.Its right part connects with bedrock but the left part is hanging.Based on the 3-dimensional seepage analysis,the ground water pressure acted on the impervious wall is determined firstly for the optimal plan of seepage control.By use of the non-linear 3-dimensional FEM,the settlements of dam foundation and deformation and stress of impervious wall in the stages of construction and water impoundment and earthquake are obtained.It is proved that the design scheme of impervious wall is feasible and reasonable in technology.Here,it is more efficient for modelling the underground water pressure acted on the impervious wall by the seepage analysis.更多还原