长江科学院院报2012，Vol.29Issue(9)：103-106,4.DOI:10.3969/j.issn.1001-5485.2012.09.024
库水位变化对库岸滑坡稳定性影响的预测研究
Prediction of Landslide Stability of Reservoir Bank under the Influence of Water Level Fluctuation
摘要
Abstract
Landslide stability affected by long-term reservoir water level fluctuation is predicted by finite equilibrium method considering the coupling between seepage field and stress field. Shaiwangba landslide in the Three Gorges Reservoir area is taken as a case study. Through numerical calculation, the stability factor considering the displacement incremental variable and pore water pressure incremental variable is acquired. By analyzing the stability factor during the decrease of reservoir water level in 5 hydrological years, the nonlinear fitted curve of minimum stability factor is obtained. Results show that the stability factor tends to be steady at 1. 172, and the landslide phreat-ic line tends to be constant with the variation of reservoir water level. It' s concluded that deformation will take place at the Shaiwangba landslide during the first 2-3 years after the impoundment, and will remain stable in subsequence.关键词
水库滑坡/渗流-应力场耦合/极限平衡法/稳定性分析Key words
reservoir landslide/ coupling between seepage field and stress filed/ limit equilibrium method/ stability analysis分类
建筑与水利引用本文复制引用
黄栋,乔建平,张小刚..库水位变化对库岸滑坡稳定性影响的预测研究[J].长江科学院院报,2012,29(9):103-106,4.基金项目
中国科学院知识创新工程重要方向项目(KZCX2-YW-Q03-5) （KZCX2-YW-Q03-5）
国家自然科学基金(41001007) （41001007）
国家科技支撑计划课题(2012BAK10B04) （2012BAK10B04）
