混凝土面板堆石坝接缝水下防渗修复技术  

Underwater anti-seepage repair technology for joints of concrete face rock-fill dam

作　　者：程庆超 胡召根 许鑫[2] 曹腾腾[2] 勾仕禧 CHENG Qingchao;HU Shaogen;XU Xin;CAO Tengteng;GOU Shixi(Hangzhou Guodian Dam Safety Engineering Co.,Ltd.)

机构地区：[1]杭州国电大坝安全工程有限公司,浙江杭州310014 [2]天生桥一级水电开发有限责任公司,贵州兴义562400

出　　处：《大坝与安全》2023年第3期64-67,71,共5页Dam & Safety

摘　　要：混凝土面板接缝挤压破坏是高面板堆石坝的主要破坏形式之一。挤压破坏产生后,破坏面沿垂直缝从坝顶延伸至水下部分,导致面板接缝防渗结构损坏,对大坝造成严重的渗漏危害。根据项目特征研究面板接缝化学灌浆和SR防渗结构相结合的水下防渗修复施工技术,通过工程实例应用分析,可有效处理水下面板接缝挤压破坏引起的防渗结构损坏问题,为类似工程提供借鉴。The crushing failure of concrete face slab joints is one of the main failure forms of high concrete face rock-fill dam,and it is easy to extend from dam top to the underwater part along the vertical joint,causing damage to the anti-seepage structure and serious leakage hazards to the dam.This paper introduces the underwater repair technology combined with chemical grouting for concrete face slab joints and SR anti-seepage structure.By analysis of engineering examples,it is obtained that the technology can effectively deal with the problem of leakage caused by crushing failure of underwater face slab joints,providing reference for similar projects.

关 键 词：面板接缝 挤压破坏 化学灌浆 水下防渗 

分 类 号：TV698[水利工程—水利水电工程]