Research On The Revival Mechanism And Stability Of Baiquesi Landslide

Baiquesi landslide is located in slopes after Baiquesi township government in Lueyang county of Shaanxi Province. The landslide is a medium-sized old accumulation landslide, occur resurrection influenced by artificial excavation, rainfall and earthquake, threatening the safety of township government and settlements under the slope. Therefore, based on the Baiquesi landslide as the research object, used the method of field survey, indoor experiment, numerical simulation and limit equilibrium method, analysis the influence factors of landslide and stability mechanism of the resurrection, and put forward reasonable prevention and control measures.This article main research content:(1)Through the field exploration, engineering geological mapping and drilling engineering geological method, found out the basic characteristics of the old landslide, morphological and deformation and destruction. Found by studying the influence factors of landslide are mainly four factors: geological structure, rainfall, earthquake and human engineering activity, and analyzes the mechanism resurrect of the landslide.(2)Using finite element software(MIDAS) model for different excavation case, for each model and simulated under natural and saturated state, analyzing changing circumstance of the stress and strain of the landslide under different conditions, analysis of landslide mechanism.(3) Calculate the landslide stability of different slope used the limit equilibrium method, the results show that the landslide is in unstable state of the site excavation case, through the emergency excavation, the la ndslide is basically stable- stable state, show that explain emergency excavation effect is obvious, but does not meet the safety requirements. Calculate the stability coefficient of landslide and residual slide force, provide the ba sis for control measures.(4) Baiquesi landslide is in basically stable- stable state, but it can’t meet the safety requirements, therefore, according to the basic characteristics of landslide and its stability, and put forward reasonable prevention and control measures.