丙烯酸盐在细微裂隙防渗帷幕灌浆中的应用  

Application of Acrylate in Anti-Seepage Curtain Grouting for Small Cracks

作　　者：陈伏牛 韩建东 杨晓鹏 CHEN Funiu;HAN Jiandong;YANG Xiaopeng(Powerchina Northwest Engineering Corporation Limited,Xi'an 710065,China;Powerchina Northwest Water Conservancy and Hydropower Engineering Consulting Co., Ltd., Xi'an 710061,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065 [2]中国水利水电建设工程咨询西北有限公司,西安710061

出　　处：《西北水电》2021年第1期41-44,共4页Northwest Hydropower

摘　　要：两河口水电站为砾石土直心墙堆石坝,最大坝高295 m,岩性为砂板岩。大坝底层灌浆平洞帷幕水泥灌浆完成检查合格后仍有微渗水现象,鉴于大坝底层灌浆帷幕长期承受300 m以上超高水头运行且蓄水后渗水处理难度大等特点,采用丙烯酸盐材料对细微裂隙进行化学灌浆,防渗帷幕效果明显,保证了蓄水和大坝长期安全运行。Lianghekou Hydropower Station is a gravel-soil upright-core rockfill dam with a maximum dam height of 295 m and a lithology of sand slate.After curtain cement grouting of the grouting adit at the dam bottom is completed and passed acceptance inspection,micro-seepage is still observed.The grouting curtain has the characteristics of long-term operation with an ultra-high head of more than 300 m and its seepage treatment is difficult after water storage.The acrylate material is used for chemical grouting of the small cracks which is significantly effective for the anti-seepage and ensures water storage and long-term safe operation of the dam.

关 键 词：细微裂隙 防渗帷幕 水泥灌浆 丙烯酸盐灌浆 

分 类 号：TV543.5[水利工程—水利水电工程]