响洪甸水库左坝肩断层加固技术探索与实践  

Exploration and practice of the fault reinforcement technique for left abutment of Xianghongdian reservoir

作　　者：王砚海 WANG Yanhai(Anhui Xianghongdian Reservoir Management Office)

机构地区：[1]安徽省响洪甸水库管理处,安徽六安237300

出　　处：《大坝与安全》2024年第4期63-68,共6页Dam & Safety

摘　　要：响洪甸水库大坝为我国自行设计施工的第一座等半径定圆心混凝土重力拱坝。1962-1965年,响洪甸水库枢纽工程填平补齐阶段,在左坝肩发现F_2断层,之后对F_2断层进行了3次地质复查,对左坝肩岩体进行了帷幕灌浆和固结灌浆处理。经大坝稳定计算,左坝肩110 m高程以上基本荷载工况下的稳定安全系数最小值为2.68,不满足规范要求,通过采用抗滑墩+预应力锚索和固结灌浆等综合加固措施,使稳定安全系数最小值达到3.52,满足了规范要求,说明大坝左坝肩加固处理措施有效。The Xianghongdian reservoir dam is the first concrete gravity arch dam with equal radius and fixed center that designed and constructed by China.During the filling and repairing stage of Xianghong-dian reservoir from 1962 to 1965,F2 fault was found on the left abutment.Afterwards,three geological re-views were conducted on the F2 fault,and curtain and consolidation grouting treatment were carried out on the left abutment rock mass.According to the dam stability calculation,the minimum stability safety factor of left abutment above the elevation of 110 meters under the basic load condition was 2.59,which did not meet the code requirements.By adopting comprehensive reinforcement measures such as anti-slip pier+prestressed anchor cable and consolidation grouting,the minimum stability safety factor reached 3.52,which met the code requirements,indicating that the reinforcement treatment measures of left abutment are effective.

关 键 词：响洪甸水库 左坝肩 断层加固技术 

分 类 号：TV622[水利工程—水利水电工程]