Stability Analysis And Reinforcement Research Of K178+500～700Landslide In Tong-huang Freeway

With China’s economic strategy is leaning to the west and the implementation of thenational western development strategy, the loess area, the rapid development of highwayconstruction, will face and its complex geological environment, the stability of loess slopeproblems has become one of the important subject currently needs careful study. Therefore,correct evaluation of slope stability, make the engineering construction conform to theprinciple of safe, reasonable, is very important.With copper K178+500~700tonghuang highway landslide as the engineering background,through the integrated research methods such as theoretical analysis and numerical calculation,carried out "landslide stability analysis and reinforcement technology research". In this paper,the landslide area location, weather, hydrology, topography, stratum lithology and geologicalstructure is introduced in detail, combining with the engineering geological conditions,according to field investigation, from landslide, structure, morphology, deformation andsliding surface of sliding zone, fully understand the characteristic of the landslide. Seriouslyanalyzed the landslide, this paragraph presents the formation mechanism of the landslide, andthe sensitive factors affecting the formation of the landslide is obtained for the weak structuralplane and high opening conditions. The stability of the landslide with the method of qualitativeand quantitative analysis, qualitative analysis of the landslide under natural conditions in astable state. According to the geological investigation data and indoor test, the stability oflandslide is calculated by the limit equilibrium state, the mechanical parameters of landslide isdefined; Using transfer coefficient method, the stability coefficient of landslide has carried onthe calculation and analysis, concluded that the landslide is at a stable time, steady state.ANSYS finite element software to research the landslide are simulated through the stress andstrain analysis showed that the interface of landslide sliding trend is relatively large. Finally bring forward the scheme of governance of the landslide anti-slide pile, gravity retaining walland drainage measures of combining the composite reinforcement measures, landslide shouldbe paid attention to in the process of strengthening construction of related matters.Based on the actual copper tonghuang highway project as the background, has carried onthe analysis and calculation on the stability of landslide and landslides are studied, somecounter measures in highway management for the future similar landslide has a certainreference.