某大坝右岸覆盖层内渗流性状和防渗缺陷分析  

Analyses of Seepage Properties and Impervious Defects in Right-bank Overburden of a Dam

作　　者：吕高峰[1] 王玉洁[1] 朱锦杰[1] 张猛[1] 

机构地区：[1]国家能源局大坝安全监察中心,浙江杭州310014

出　　处：《水力发电》2015年第11期47-50,54,共5页Water Power

摘　　要：某大坝右岸覆盖层最大深度达到420m。工程运行中发现右岸渗漏量较大,且右岸山坡右岸地下水位整体偏高,局部山坡和排水廊道发生渗透破坏。结合工程现场检查情况和现有监测资料对该大坝右岸渗流性状进行综合分析,分析渗水的主要来源和途径、渗流稳定以及防渗系统存在的缺陷,并运用有限元模型分析防渗系统缺陷对渗流的影响,为工程运行与处理提供参考性意见。A dam is built on a deep overburden with a maximum depth of 420 m in the right bank. The actual operation finds that a large amount of leakage appears on right bank, the underground water level in right bank is high and the local hillside and the drainage gallery have been damaged by the seepage. The seepage character analyses are conducted by combining on-site inspections and existing monitoring records. The main source, seepage path, seepage stability and defects are analyzed. The effects of defects of seepage control system are also studied by using FEM. The analysis results will provide references for following operation and treatment of project.

关 键 词：覆盖层 防渗墙 渗流 地下水位 缺陷 分析 

分 类 号：TV698.12[水利工程—水利水电工程]