Exploration and practice of the fault reinforcement technique for left abutment of Xianghongdian reservoir
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.
万方数据
维普
