云南龙马水电站大坝渗漏成因分析及处理  

Genetic analysis and treatment of leakage in Longma concrete face rockfill dam in Yunnan

作　　者：李毅[1] 李颖[1] 白海林[1] 张玉龙[1] 黄仕俊[1] 

机构地区：[1]中国水电顾问集团昆明勘测设计研究院,昆明650033

出　　处：《西北水电》2011年第B09期57-61,共5页Northwest Hydropower

摘　　要：龙马水电站运行阶段,随着库水位不断上升,陆续出现大坝渗流量不断增加、变形增大、坝顶防浪墙施工缝张开等异常现象。通过分析大坝渗流量变化及其变形规律,当蓄水高度超高97m后的大坝变形和渗漏量均有突变增大趋势,还分析了绕坝渗流、引水洞、排沙洞、溢洪道、降雨量等影响因素。分析结果表明,由于大坝面板缺陷促成渗漏量不断增加,变形随之增大,这为大坝检查及处理提供了决策依据。文章着重介绍了与大坝渗漏有关所取得的监测成果,对面板坝变形特点及薄弱部位进行总结。During the operation stage of Longrna hydropower station, the rise of reservoir water level causes the increasing of dam leakage and deformation, and the opening of construction joints of dam crest wave wall. The paper analyzes the variation of dam leakage and dam deformation law. It indicates that the leakage and deformation increase abruptly when the water level is higher than 97m. of the influence factors such as bypass seepage, headrace tunnel, sand-sluicing tunnel, spillway and rainfall are also analyzed. The results show that dam face defects cause the increase of dam leakage and deformation, which provides basis for decision making on dam. inspection and defects treatment. It also introduces the monitoring data relative to the s dam leakage and sums up the deformation features of dam.

关 键 词：面板堆石坝 监测 渗流 变形 龙马水电站 

分 类 号：TV698.12[水利工程—水利水电工程]