Study On Stability Analysis Of Highway Rock Slope And Its Reinforcement Technique

Abstract:High slope stability problems have been major issue during the process of infrastructure construction in our country. Highway construction in China’s western region often leads to cutting high slope. Under the impact of man-made slope cutting, blasting vibration, surface water erosion, groundwater infiltration the steady natural slope with special geological conditions is likely to occur excessive deformation and leads to surface crack, internal slip surface, stability sustained reductions eventual instability and failure and trigger landslides, collapse or other geological disasters. Based on the above understanding, In this paper, the rock mass slope stability and support technology was studied, The research content and research conclusions are as follows:(1) Based on the slope stability at home and abroad research methods summary, the limit equilibrium principle can be used to calculate the stability of the slope has the characteristics of simple and rapid, has been widely used. Finite difference can be used to calculate the rock and soil body of large deformation problem has many advantages, can the rock mass stress and deformation characteristics do comprehensive analysis, Can simulate slope excavation, supporting process, Limit equilibrium method to analyze slope stability is a good supplement.(2) Based on the analysis of the regional geological features, the example slope topography condition is complex, geologic function strong, lead to broken slope rock mass, structure loose, under the influence of the human engineering, the stability of the slope is extremely easy to reduce, gradually formed landslide, need to undertake rational support treatment.(3) Using the limit equilibrium method to studied the slope excavation stability, research shows that:After the slope excavation cannot satisfy the standard minimum requirements, need to take corresponding control measures; On the slope support measures for the optimization design, the slope anchor support, anchor spacing take3meters、length20meters、Angle45°。(4) Based on finite difference method were analyzed the slope, analysis results showed that:with the excavation, slope horizontal displacement and vertical displacement are gradually increasing, vertical displacement in the slope central is caused by the shear deformation, Slope feet displacement is due to excavation unloading rebound cause, the anchor and frame structure beams to a combination of side slope support treatment, this calculation scheme to meet the requirements of slope stability, so finally to adopt the management scheme on the slope to undertake administrative。(5)Due to the example slope use anchor and frame structure beams combination supporting scheme, considering the possible problems in construction process, priestesses anchor cable sash girder construction technology、construction method and Priestesses tensioning construction of a detailed research and discusses。...