基于监测反馈的病险土石坝防渗加固效果研究  

Research on the Seepage Control and Reinforcement Effect of Dangerous Earth Rock Dam Based on Monitoring Feedback

作　　者：蒋买勇[1,2] 刘贤鹏 杨晓雅 李金友 JIANG Mai-yong;LIU Xian-peng;YANG Xiao-ya;LI Jin-you(Hunan Polytechnic of Water Resources and Electric Power,Changsha 410131,Hunan Province,China;School of Water Resources and Hydropower Engineering,Wuhan University,Wuhan 430072,Hubei Province,China;Changsha Water Conservancy Bureau,Changsha 410100,Hunan Province,China)

机构地区：[1]湖南水利水电职业技术学院,湖南长沙410131 [2]武汉大学水利水电学院,湖北武汉430072 [3]长沙县水利局,湖南长沙410100

出　　处：《中国农村水利水电》2022年第10期204-210,共7页China Rural Water and Hydropower

基　　金：湖南省水利科技重大项目(湘水科计[2017]230-4);湖南省自然科学基金资助项目(2019JJ70053);湖南省水利科技项目(XSKJ2019081-20)。

摘　　要：为了实现土石坝渗流监测资料对其加固效果的反馈分析,以某水库主坝渗流为例,建立三维渗流模型进行有限元计算,模拟分析了正常蓄水位和设计洪水位两种工况下土石坝的渗流性态。通过监测资料分析表明:有限元计算结果能反映出较为真实的土石坝渗流场情况,经过除险加固后的土石坝整体防渗效果良好,但大坝右岸下游侧和棱体排水上部区域存在潜在渗流溢出点,该水库主坝渗流场计算结果符合土石坝渗流规律,其结果可为大坝渗流问题分析提供可靠的科学依据。In order to realize the feedback analysis of reinforcement effect from seepage monitoring data of the earth rock dam,taking a reservoir main dam as an example,a three-dimensional seepage model is established for finite element calculation,and the seepage condition of earth-rock dam under normal storage level and design flood level is simulated and analyzed. The analysis of monitoring data shows that the finite element calculation results can reflect the relatively real seepage field of the earth rock dam. The overall anti-seepage effect of the earth rock dam after danger removal and reinforcement is good. There are potential seepage overflow points in the downstream of the right bank of the dam and the upper part of the ridge drainage. The calculation results of the seepage field of the main dam of the reservoir accord with the seepage law of earth-rock dam. The results provide a reliable scientific basis for the analysis of dam seepage.

关 键 词：土石坝 有限元法 渗流分析 监测反馈 

分 类 号：TV223.4[水利工程—水工结构工程]