Stability of Bank Slope Under Reservoir Water Drawdown
Changing reservoir level is one of the most important factors causing a slope failure of banks. This paper introduces a series of analyses of transient groundwater flows in a soil embankment under reservoir water level fluctuations and analyses of the stability of the embankment in the Three Gorges reservoir area of the Yangtze River. The analysis results demonstrate that the change of phreatic line dependant on the permeability during the drawdown process;the safety factor of slope with high permeability is larger than that of slope with low permeability. At the same time, permeability anisotropy is also a factor that influence the safety factor. These analyses provide basis for slope stability analysis and optimization of the slope design in the Three Gorges reservoir area.
Slope stability reservoir water drawdown transient seepage unsaturated soils anisotropic seepage
LIU Xinting ZHANG Zhenhua
Engineering Faculty, China Univ. of Geosciences, Wuhan China, 430074 College of Hydraulic & Environm Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Th
国际会议
成都
英文
533-537
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）