Title :
Coupling analysis of seepage and stress of the unsaturated soil under the rainfall condition
Author :
Wu, Hengbin ; He, Zeping ; Gao, Panke
Author_Institution :
Sch. of Civil Eng., Chongqing Three Gorge Univ., Chongqing, China
Abstract :
The mechanical parameters of rock mass in reservoir bank would be affected by the changes of water level and the rainfall condition, and the slope stability would be change with that. the coupling of seepage and stress of unsaturated soil, considering the condition of rainfall, is analyzed in this paper. The water head distribution and critical line of pore water pressure got by the seepage analysis are useful for practical engineering. The sensitivity analysis is taken to study the effect of mechanical parameters of soil on slope stability. The results show that the parameter of cohesion is most sensitive to the safety factor of slope, the friction angle is in second and the unsaturated shear strength angle is least sensitive.
Keywords :
rain; reservoirs; rocks; shear strength; soil; cohesion; coupling analysis; friction angle; pore water pressure; rainfall condition; reservoir bank; rock mass mechanical parameters; seepage analysis; sensitivity analysis; slope safety factor; slope stability; stress; unsaturated shear strength angle; unsaturated soil; water head distribution; water level; Couplings; Materials; Numerical stability; Permeability; Soil; Stability analysis; Stress; coupling of seepage and stress; rainfall; slope stability; unsaturated soil;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5893345
