土石坝心墙病害致渗流场畸变数值模拟研究  

Numerical Simulation of Seepage Field Distortion Caused by Core Wall Disease of Earth-Rock Dam

作　　者：徐霁云 汤雷[1] 王海军[1] 王雄锋 XU Jiyun;TANG Lei;WANG Haijun;WANG Xiongfeng(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,Jiangsu,China)

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029

出　　处：《水力发电》2023年第4期36-41,共6页Water Power

基　　金：国家重点研发计划项目课题(SQ2021YFC3000080)。

摘　　要：土石坝在我国大坝总量中所占比例很大,并且大量土石坝存在超龄超限服役等问题,导致这些大坝发生渗漏破坏的概率有所增加,给大坝运行造成严重的安全隐患。为此,以长河坝为例,通过数值模拟计算研究了当土石坝心墙存在病害且发生渗漏形成优势渗流通道后的渗流场分布,并结合现有大坝渗漏检测技术揭示了渗流场畸变表征与病害位置的联系,为土石坝病害探测提供了新的思路。The earth-rock dams account for a large proportion of dams in China,and a large number of earth-rock dams are in service beyond the age limit,which results in an increase in the possibility of leakage damage and causes serious hidden dangers for the safe operation of these dams.Therefore,taking Changheba Dam as an example,the seepage field distribution is studied through numerical simulation when the core wall of earth-rock dam is diseased and the leakage occurs to form dominant seepage channel,and combined with existing dam leakage detection technology,the relationship between seepage field distortion and disease location is revealed,which will provide a new idea for the detection of earth-rock dam disease.

关 键 词：土石坝 心墙病害 畸变渗流场 数值模拟 有限元 长河坝水电站 

分 类 号：TV641.1[水利工程—水利水电工程]