Analysis of the impact of reservoir water level fluctuation on the stability of cohesive colluvial landslide in the Three Gorges Reservoir Area

Based on the test data, survey data and the real-time monitoring data, this paper makes the Tangjiao #1 cohesive landslide in Three Gorges Area to be the research object, analyzing and studying the impact of reservoir water level fluctuation rates on stability of typical cohesive colluvial landslide with the help of the SEEP/W and SLOPE/W of Geoscience software GeoStudio. The results show that the impact of changing reservoir level on reservoir landslide stability is controlled by a variety of factors, including the hydrodynamic pressure, hydrostatic pressure, and uplift force, physical and mechanical properties (c, phi value change) and the stability trend depends on the dominant factor(s).