[1] College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, China
[2] China Three Gorges Construction Engineering Corporation, Chengdu, China
[3] Huangzhong District Water Conservancy Bureau, Xining, China
[4] Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, China Three Gorges University, Ministry of Education, Yichang, China