Abstract:Jiare landslide is located in Jiaxue Township of Seda County in Ganzi Prefecture and it is a typical traction landslide with average slope of the landslide body about 35°, it is mainly composed of gravel soil. The landslide is about 195m in length, 280m in width and 15m in average thickness. The total mass of the landslide body is about 600,000m3, which is a medium-sized landslide. At present, the deformation of the upper and middle parts of the landslide mass is obvious. Once the landslide occurs, it will directly threaten the safety of the life and property of 160 people in 41 local families. Based on the field geological survey, this paper makes a qualitative analysis on the deformation and failure mechanism of the landslide body and makes a quantitative analysis by using 3-dimensional finite element numerical simulation, which is of great significance for the study on the stability of the same kind of landslide.

Abstract:Take the example of deformation and failure of landslide in Huanglianshu of Three Gauge and according to the monitoring on ground displacement, rainfall, underground water and the reservoir water level, the effects by the interactions between the changes of monitoring parameters and of hazard factors are analyzed and the deformation and failure mechanism are studied. The paper summed up the preliminary study results which not only has important theoretical significance for monitoring and early warning for landslide, but also has reference value and guiding significance for forecasting just before sliding caused by reservoir water level and rainfall.