Deformation and Stability Analysis of Zhangjiacitang Landslide Under the Action of Reservoir Water and Rainfall
The Three Gorges Reservoir,one of the largest reservoirs in China,is located in the middle reaches of the Yangtze River.It has complex topographic and geological conditions,neotectonic movement and external dynamics are active.A large number of water-related landslides in the Three Gorges Reservoir area are resurrected and deformed under the influence of annual reservoir water fluctuation and flood season rainfall.In order to study the influence of reservoir water and rainfall on the deformation and stability of water-related landslides in the reservoir area,the typical Zhangjiacitang landslide in the Three Gorges Reservoir Area was taken as an example,the spatio-temporal response rule of landslide deformation was studied by analyzing the GPS monitoring data from 2017 to 2021,and the stability of the landslide under actual working conditions was calculated by Geo-Studio numerical simulation.The results show that the landslide deformation of Zhangjiacitang gradually weakens from the middle back to the front,and the whole deformation shows the characteristics of pushing.Landslide stability is more sensitive to rainfall.The stability of landslide is worst in the period of reservoir water level decline combined with rainfall.The research results can provide reference for the prevention and control of the same type of water-related landslide in the Three Gorges Reservoir area.
Three Gorges reservoir areaZhangjiacitang landslidereservoir water levelrainfallstability analysis
NETL
NSTL
万方数据
