金佛山混凝土面板坝二维渗流计算分析  

Two-Dimensional Seepage Calculation Analysis of Jinfoshan Concrete Face Rockfill Dam

作　　者：赵迪[1] 梁越[1] 张慧萍[1] 

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074

出　　处：《水电能源科学》2013年第6期117-119,50,共4页Water Resources and Power

基　　金："十二五"国家科技支撑计划基金资助项目(2012BAB05B04;2011BAB09B01)

摘　　要：针对渗透水流对土石坝坝体、坝基的渗透破坏危害性极大问题,以金佛山水电站混凝土面板堆石坝为例,根据地质条件和渗流控制特点建立平面二维有限元计算模型,模拟了坝体在不同水位组合条件下的渗流场,研究了渗透破坏的可能性,并分析了防渗帷幕及坝基渗透系数的敏感性。计算结果表明,各种水位组合下混凝土面板及防渗帷幕起主要阻水作用,水力比降大,渗流场分布对防渗帷幕及坝基渗透系数不敏感,渗流流量相对敏感,为坝坡安全性和渗流稳定性评估提供了依据。In view of the problems that seepage influences the safety of earth and rock fill dams greatly,taking the Jinfoshan concrete face rockfill dam for an example,based on the geological conditions and seepage control characteristics,we establish two-dimensional finite element calculation model to simulate the seepage field in different water level combination.And then the possibility of seepage failure is studied.At the same time,it analyzes the sensitivity of impervious curtain and dam foundation＇s permeability coefficient.The calculation results show that concrete face and impervious curtain is the major resistance to water;the hydraulic gradient is large and the seepage field distribution has little sensibility with the change of impervious curtain and dam foundation＇s permeability coefficient;but seepage flow is sensitive.Thus,it provides basis for evaluation of the dam slope safety and the seepage stability.

关 键 词：二维渗流 金佛山面板堆石坝 防渗帷幕 渗流破坏 

分 类 号：TV641.2[水利工程—水利水电工程]