The Deformation Process Of Yu Jia Ping Landslide Under Rainfall And Slip Mechanism

Landslide is one of the most damaging types of disasters in geological disasters.With the steady implementation of China's Western development strategy,the West airport construction enters the rapid development stage,these airports have the characteristics of bad climatic environment,poor geological condition,complicated terrain,excessive seismic intensity zone and high-fill slope.Therefore,most mountainous airports are plagued by geological hazards of slope.As Landslide is the most common geological hazard of slope instability,the research on itsmechanism,stability and control solution is of great significance for protecting the life and property of people,maintain local stability,and build a harmonious so.This article takes the Yu Jia Ping landslide as the research object,through the field reconnaissance,unifies the related reconnaissance and the indoor experiment,etc.,fully grasps the landslide area information about: hydrology meteorology,the terrain landform,the stratum lithology,the geological structure,the hydrogeological condition and so on.Through the analysis of the geological condition of the Yu Jia Ping landslide,this paper makes a thorough analysis on the boundary and morphology scale,landslide zoning,landslide structure characteristics,influencing factors and deformation and failure process.Firstly,In consideration of two large-scale landslide has been occurred in the Yu Jia Ping since 2009,this paper combins the field investigation and the study of the deformation and failure process.Moreover,the landslide deformation process under rainfall is emphatically analyzed,and the geological prototype of the slope before and after sliding is restored,and the progressive relationship of the sliding landslide is also analyzed.Then,The deformation process of landslides under rainfall,the effect of rainwater on rock and soil,the mechanism of landslide genesis and the characteristics of basic deformation and failure are systematically analyzed and researched.By adopting the direct shear experiment of soil-sample to control moisture content,the variation regularity of cohesive force and internal friction angle with moisture content in landslide body was investigated.The stability coefficient of landslide along each sliding surface and potential sliding surface under different working conditions is calculated by using the method of limit equilibrium theory and transfer coefficient,and the stability of the landslide is evaluated under different working conditions.Finally,the numerical simulation of vector displacement and plastic deformation zone of slope is applied by ANSYS,and the deformation and failure characteristics of landslide under rainfall condition are simulated by finite element numerical simulation,and the stability and future development trend of landslide are analyzed.