Enziping 2# Landslide Stability Analysis And Treatment Scheme

The stability of the dam near the dam bank is often a bottleneck in the construction of hydropower stations.In the southwestern region of China,mountains and valleys,rapids,water is rich,is the hot spots of hydropower development.But these areas are complex geological conditions,often brewing large landslides.Its stability will directly affect the safety of the dam and the normal operation of the reservoir.Therefore,the scientific evaluation of the landslide is very necessary.In this paper,the landslide,topography,stratigraphic lithology and geological structure of the landslide area are summarized,and the morphological characteristics and forming mechanism of the landslide are studied in this paper.The numerical simulation of the landslide is carried out by finite element numerical simulation software MIDAS/GTS,which reveals the displacement,stress variation and deformation characteristics of the landslide in the water level rise,the rainstorm condition and the earthquake condition.Finally,the engineering impact of the landslide body is studied.Draw the following conclusions:(1)The physical simulation shows that the slope of the 2 # landslide is the type of slippage and tectonic failure,and the formation mechanism is mainly under the cutting of the Jinsha River(2)Based on the finite element numerical simulation software Midas / GTS,the three-dimensional modeling analysis of the Renziping 2 # landslide is carried out.The stability of the slope is verified by the finite element method.The results show that the landslide The stability coefficient is 1.06 in the natural state,and the slope is in the unstable state and the displacement and deformation are increased under the condition of the dry water level and the flood level.Under the earthquake condition,the displacement of the landslide The maximum of 1.4m is 4 seconds when the seismic wave is applied.From the point of view of the deformation cloud,the deformation of the landslide is in the low water level and the flood level.The deformation occurs mainly in the slippery body.Under the earthquake condition,the landslide is from bedrock to slippery Body are deformed.(3)Using the empirical formula method of the Academy of Water Sciences and the method of Pan Jiazheng to calculate the surge of landslide,it is concluded that the landslide is 1.5 m after falling into the reservoir area and has no effect on the safety of the hydropower station.