Analysis Of Stability And Design Of Control Measures Of Xiachangqu Landslide In Leibo Sichuan

China is a “landslide country”,the landslides are widely distributed in the southwest region(Sichuan,Yunnan,Guizhou,Tibet,etc.),the northwest region(Shaanxi,Gansu,etc)and the central southern regions(Hunan,Hubei,etc.).In the above-mentioned areas,the landslides are scattered,and they are concentrated in the rainy season or local rainstorm.The number of these landslides is large and has become a potential threat to the local people and social construction.According to the survey,there are more than 100 landslides and unstable slopes in Leibo County,Sichuan Province.Xiachangqu landslide is located in Wenshui Town,Leibo County,Sichuan Province,the upper left bank of the Jinsha River,it is in a deformed state at present.Due to the active activities of human engineering near the landslide,coupled with the impact of rainfall on the slope,it will promote the further deformation and damage of the landslide,seriously endangering the safety of the people and property of the lower part of the landslide.It is of great significance to provide a reliable reference for the study and control of landslide in this area.In this paper,the regional geological environment conditions of the landslide are analyzed in detail,and the factors affecting the stability of the landslide are summarized.The evolution mechanism of the landslide is analyzed and the steady state of the landslide under the heavy rain condition is simulated numerically.Engineering prevention and control measures,made the following research work in detail:(1)Through the collection of data and field investigation,detailed outline of the landslide area of the geological environment,for the next plant landslide research provides a solid foundation.As a geological background,the basic characteristics,influencing factors and deformation mechanism of the landslide are clarified.(2)On the basis of the theoretical analysis,according to the engineering geological conditions of the slope,the reasonable mechanical parameters are obtained through the indoor physical test,and the geomechanical model of landslide stability analysis is constructed.Using the limit equilibrium method and the numerical simulation method,the qualitative and quantitative stability analysis of the landslide under natural and heavy rain conditions is obtained.The results are obtained with the strain and displacement cloud,and the deformation mechanism of the landslide is further verified.(3)According to the research results and the characteristics of landslide,according to the design specifications,the paper puts forward the prevention and control measures suitable for the landslide in the next factory,that is,the prevention and control measures based on drainage engineering + pile wall.