Slope reinforcement and stability monitoring after tunnel collapse in the right abutment of Changma Reservoir
The spillway tunnel of Changma reservoir in Gansu Province was seriously collapsed during the dam construction period, which triggered the displacement of the rock slope and jeopardized the slope stability in the right bank. This paper introduces the reinforcement measures based on field investigation, laboratory tests and numerical analyses. Consolidation grouting method was recommended to strength the slope toe after study on the slope stability and finally implemented to prevent the further deformation of the right bank slope. The field monitoring program and results are also presented in this paper. The stability analysis with distinct element method and the field monitoring data showed that the slope is safe and stable after the reinforcement.
spillway tunnel collapse slope reinforcement monitoring toppling failure slope stability
HOU Yujing DONG Feng Zhang Bingyin
China Institute of Water Resources and Hydropower Research, Beijing, 100044 Gansu Jiudian Gorge Wate & Hydropower Development Co., LTD, Lanzhou, 730000 Tsinghua University, Beijing, 100084
国际会议
西安
英文
1-15
2005-11-01（万方平台首次上网日期，不代表论文的发表时间）