清远抽水蓄能电站上库堵漏灌浆施工技术  

Plugging Grouting Technology for Upper Reservoir of Qingyuan Pumped Storage Power Station

作　　者：代福[1] DAI Fu(Sinohydro Foundation Engineering Co.Ltd.,Tianjin 301700,China)

机构地区：[1]中国水电基础局有限公司,天津301700

出　　处：《工程建设与设计》2018年第23期186-188,共3页Construction & Design for Engineering

摘　　要：清远抽水蓄能电站建成蓄水后,发现上库主坝坝基渗水量较设计值偏大很多,经检测判断,是主坝的心墙混凝土垫层以下强风化带和弱风化上带浅层基岩部位存在渗漏。要想处理该部位的渗漏,需要从深度超过50m的新建黏土心墙上钻孔穿透整个心墙、混凝土垫层、下部基岩;同时,为了解决微小裂隙灌浆处理效果,采用了水泥膨润土混合浆液和新型材料硅溶胶浆液,最终取得了良好的效果。Alter the Qingyuan pumped storage power station is built, it is found that the water permeability of the main dam foundation of the upper reservoir is much larger than that of the original design value. It is judged by the detection that there is leakage in the shallow bedrock of the strong weathering zone and weak weathering zone below the core concrete cushion of the main dam. In order to deal with the leakage of the site, boreholes need to be drilled through the entire core wall, concrete bedding, and underlying bedrock from a new clay core wall more than 50m deep. In order to solve the effect of the small crack grouting treatment, the cement bentonite mixture slurry and the new material silicon soluble glue slurry have been adopted, and the good results have been achieved at the end.

关 键 词：黏土心墙 钻孔 堵漏灌浆 硅溶胶 

分 类 号：TV698.23[水利工程—水利水电工程]