心墙坝浸润线简化计算方法  

Simplified method for core dam saturation line calculation

作　　者：肖钧升 沈振中[1,2] 于洋[2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,南京210098 [2]河海大学水利水电学院,南京210098

出　　处：《南水北调与水利科技》2016年第1期114-118,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金(51179062)~~

摘　　要：通过理论分析和数值计算,在考虑坝体与防渗墙的相对渗透系数关系的基础上,提出了估算心墙坝坝体浸润线的一种简化计算方法,给出了浸润线位置的拟合公式。以白鸭山水库大坝为例,将该简化方法与有限元法的计算结果进行对比,表明该简化方法合理、可行。这一简化计算方法可大大减少中小型水库大坝在进行除险加固方案比选时的计算工作量。The saturation line position is one of the main bases for flow characteristics evaluation of earth rock dams,which must be calculated before the comparing and selecting the appropriate anti-seepage reinforcement program of dangerous earth-rock dam.Considering the relationship between the relative permeability coefficient of the dam and the cut-off wall,a simplified calculation method was proposed to estimate the saturation line of the core dam by theoretical analysis and numerical calculation.A fitting formulation was developed to calculate the position of the saturation lines.The simplified calculation methods proved to be reasonable when comparing with the results of finite element methods based on the dam of Baiyashan Reservoir.The simplified calculation method can significantly reduce the computational workload when comparing and selecting the reinforcement program of small and medium-sized reservoir dams.

关 键 词：土石坝 渗流特性 除险加固 相对渗透系数 心墙坝 坝体浸润线 

分 类 号：TV223[水利工程—水工结构工程]