人民珠江2025，Vol.46Issue(3)：39-45,7.DOI:10.3969/j.issn.1001-9235.2025.03.006
铅山混凝土面板坝面板失效和临时度汛条件下三维渗流特性
Three-Dimensional Seepage Characteristics of Yanshan Concrete Slab Dam under Slab Failure and Temporary Flood Conditions
摘要
Abstract
Concrete slabs and water stop joints are the main seepage control structures of the slab rockfill dams.Slab cracking or water stop failure will significantly affect the distribution of seepage fields in the local area of the cracks or the failure site,which will threaten the normal service performance of the dam.To investigate the seepage safety problems caused by local slab cracking and failure of water stop structures,different positions of slab cracking and water stop failure were designed,and a three-dimensional seepage finite element analysis model of the concrete slab dam of Yanshan pumping and storage power station was established.The evolution law of seepage potential distribution,seepage gradient,and seepage flow rate was studied.The effects of slab cracking and water stop failure were explored,and the sensitivity of the cushion material's permeability coefficient under temporary flood conditions was analyzed.The results show that the seepage flow rate through the slab increases as the water stop structure fails,and the cracking position decreases.Under temporary flood conditions,the maximum average seepage gradient of the cushion decreases with the increase in permeability coefficient.When the permeability coefficient of the cushion increases from 1.0×10-5 m/s to 5.0×10-5 m/s,the maximum average seepage gradient of the cushion decreases by 1.94.It is suggested that the permeability coefficient of the cushion should be greater than 5.0×10-5 m/s,which can improve the stability and safety of cushion seepage under temporary flood conditions.The research results can provide a theoretical basis for the design and construction of a slab rockfill dam anti-seepage system of similar pumping and storage power stations.关键词
混凝土面板坝/面板失效/临时度汛/渗流分析/铅山抽蓄电站Key words
concrete slab dam/slab failure/temporary flood/seepage analysis/Yanshan pumping and storage power station分类
水利科学引用本文复制引用
岳潇,陈德文,黄馨怡,甘磊,沈振中..铅山混凝土面板坝面板失效和临时度汛条件下三维渗流特性[J].人民珠江,2025,46(3):39-45,7.基金项目
国家自然科学基金项目(52179130) （52179130）
山东电力工程咨询院有限公司咨询项目(37-2023-21-K0030) （37-2023-21-K0030）
