Study Of Stability Analysis On The Landslide At Yinta In Fugu County

Rock mass bedding landslide accounted for landslide more than half of the total number of disasters, and this kind of landslide stability analysis and evaluation for landslide disaster prevention has important significance. Fugu County, with the rapid development of economy, in order to solve the problem, the government new construction development, the implementation of the large area of digging filling in the ditch, controlled by regional tectonics, lithology and other factors, in a wide range of excavation zone formation of bedding rock landslide. The Fugu new landslide and landslide has important practical significance to solve local rock mass bedding landslide prevention, select typical sand shale interbedding rock mass along the landslide, Yin tower ditch landslide as an example, the stability analysis.Based on the analysis of landslide geological environment conditions, basic characteristics and formation mechanism of the landslide stability, using different analysis methods to evaluate the stability of the landslide before and after excavation, the main achievements are as follows:（1） using the limit equilibrium method and the strength reduction of FLAC^3D under different conditions of the landslide stability was evaluated, the analysis results are as follows: In the condition of weight of the landslide stability coefficient ranged from 1.10 to 1.25, is in a stable state; landslide in the rainstorm condition stability coefficients ranged from 0.83 to 0.98, in an unstable state. The safety coefficient is 1.3, residual downslide force is 268 1533.1 KN/m, the safety coefficient is 1.4, the slope of the residual sliding force is 633.1 2300.6 KN/m, this stage has been slipping, and the slope excavation engineering in the later stage, will inevitably cause slippery slope to play, timely protection processing. The landslide is obtained through numerical simulation of Yinta FLAC^3D using strength reduction method: the stability coefficient of landslide slope 0.90, has been destroyed, causing a number of fracturing tank, slope has produced the slope displacement, that has begun to decline; finally analyzes the stress and strain condition of the landslide, you can clearly see the stress concentration area landslide.（2） a preliminary control plan of the landslide and the proposed Yinta, Yinta simulated excavation landslide classification, simulate the change of stress in the slope, slope and slope in the process of each stage of the displacement and the whole landslide stability change, which has important reference value for slope engineering and protective engineering landslide later, and expounds the influence of excavation on slope landslide classification and importance in the process of slope.