杨房沟水电站导流隧洞进口围堰防渗施工  

Anti-seepage construction of cofferdam at diversion tunnel inlet of Yangfanggou Hydropower Station

作　　者：刘涛[1] 张俊德 赵东海[1] 

机构地区：[1]中国水利水电第七工程局有限公司,四川成都610058 [2]长江水利委员会工程建设监理中心,湖北武汉430010

出　　处：《人民长江》2016年第20期55-57,共3页Yangtze River

摘　　要：杨房沟水电站导流隧洞进口围堰覆盖层主要为混合土卵石层及漂石混合土层,采取高压喷射灌浆和覆盖层帷幕灌浆相结合的方式进行防渗处理。详细介绍了高压喷射灌浆和覆盖层帷幕灌浆的施工工艺,施工难点及特殊情况的处理措施。工后质量检查以及围堰汛期挡水效果均表明联合防渗处理措施是成功的,其经验可为类似复杂覆盖层灌浆工程施工提供参考。The cofferdam overlayer at the diversion tunnel inlet of Yangfanggou Hydropower Station is mainly composed of mixed soil pebble layer and boulder mixed soil layer, high - pressure jet - grouting and overlayer curtain grouting were combined in anti - seepage treatment. Construction techniques and difficulties of jet - grouting and overlayer curtain grouting, and treatment for special condition are introduced in detail. Post - construction quality inspection and the results of water retaining of the cofferdam in flood season proved that the anti - seepage scheme was successful, which can provide reference for grouting of similar complicated overlayer.

关 键 词：围堰防渗 高压喷射灌浆 覆盖层灌浆 杨房沟水电站 

分 类 号：TV543[水利工程—水利水电工程]