江坪河水电站淤泥质基础高土石围堰施工技术  

Construction Technology of High Earth-rockfill Cofferdam in Muddy Ground in Jiangpinghe Hydroelectric Power Station

作　　者：严匡柠[1] 张海英[1] 李宜忠[1] 

机构地区：[1]武警水电第二总队,江西南昌330096

出　　处：《施工技术（下半月）》2012年第6期1-4,共4页Construction Technology

基　　金：武警水电第二总队2012-2014年度科研规划项目

摘　　要：江坪河水电站土石围堰处于古堰塞湖沉积淤泥层上,其最大堰高83.4m。为确保围堰施工质量、安全及进度等要求,结合上游围堰工程特点及现场实际水文地质情况,对弹性混凝土防渗墙成槽及置换区淤泥开挖技术方案进行优化,并采用网格式喷射混凝土替代膜上干砌块石压重施工技术,缩短了围堰施工工期,保证了围堰防渗效果,取得了较好的经济效益和社会效益。Earth-rockfill cofferdam of Jiangpinghe Hydroelectric Station locates at muddy layer of ancient dammed lake, and the maximum altitude of the cofferdam is 83.4m. For ensuring the construction quality, safety and progress, combined with the characteristics of upstream cofferdam and hydrogeology conditions, the technical schemes are optimized including elastic concrete leakage wall trenching technology and mud excavation in replacement area. RC net sprayed concrete technology is adopted instead of uniform pressure by dry stone technology. The construction period is shorted, and the anti- seepage effect of cofferdam is ensured, then good social and economic benefits are obtained.

关 键 词：水电站 围堰 基础 防渗墙 

分 类 号：TU753.1[建筑科学—建筑技术科学]