摘要
Abstract
Taking a reservoir project as an example,a three-dimensional finite element model of the seepage field was established to analyze the phreatic line and total-head line within the dam,seepage discharge from the reservoir basin,and the variation patterns of hydraulic gradients in different materials under the normal reservoir water level,normal drawdown,and rapid drawdown conditions,thereby revealing the mechanism by which the reservoir water level affects the dam seepage field.The results show that the concrete face slab and geomembrane can effectively lower the elevation of the phreatic line within the dam,reduce seepage from the reservoir basin,and decrease the hydraulic gradients of different materials.In addition,no seepage hysteresis occurs during normal or rapid drawdown,and the probability of seepage failure in the dam is low.关键词
有限元计算/库水位变化/渗流分析/水力梯度/渗流量Key words
Finite element calculation/reservoir water-level variation/seepage analysis/hydraulic gradient/seepage discharge分类
建筑与水利
