Stability Analysis And Support Evaluation On Sandstone And Mudstone Gently Dipping Beded Slope

With the implementation of the western development strategy, human engineering activities resulted in a massive landslide, not only seriously endangered the lives of people, but also caused large economic losses. The stability evaluation and reinforcement supporting effect on sandstone and mudstone gently dipping bedded slope has been the focus of research of the southwest mountain slope, the research issues involving railways, roads, utilities, mining construction engineering industry and so on. Over the years, scholars at home and abroad on the slope stability analysis of evaluation reinforcement effect and diseases formed a series of more mature theories and methods, however, the specific projects on the reliability study related to the reinforcement and gently dipping bedded sand-shale slope instability failure are relatively few, it is necessary to have a deep study on gently dipping bedded sandstone and mudstone slope failure mechanism, stability, reinforcement effect analysis and evaluation.This paper is based on the construction of key technology research projects of China Communications shares mountainous area of resource-saving highway, combined with mala river sandstone and mudstone dipping bedding slope (K27+265right side of the slope) excavation and support processes, we carry out bedding-site monitoring, stability analysis, evaluation of research supporting effect reinforcement sandstone and mudstone gently dipping slope. In accordance with the Access to information-Analysis site investigation-Monitoring Data Analysis-Establishing mode-Numerical Analysis-Supporting Evaluation:First, we refer to sandstone and mudstone dipping bedding slope relevant literature and Find out research status on sandstone and mudstone gently dipping bedded slopes; on the basis of the existing analysis data on slope, we have a research on slope regional engineering geological conditions, graphical environment and the deformation mechanisms occurring slope failure, based on the acquisition data of surface displacement field testing, the soil pressure, the anchor stress, the deep soil displacement, we analysis the slope deformation trends, we use the theory of Engineering Geology, Elastic-plastic mechanics, Rock Mechanics, Numerical Analysis to analysis the slope deformation, stress development.we use Rigid body limit equilibrium methodof the traditional method and PLAXIS numerical simulation based on mohr coulomb criterion to analysis the overall development process of slope deformation; In the finite element calculations, we use12-node element model based on the conditions of the analysis based on the molar Coulomb criterion to have a research on the changes in slope soil displacement, stress and safety factor, simultaneously, reference to the site monitoring data, we analysis numerical results. At last, we evaluate the slope supporting effect from suitability, technical conditions and the overall impact of the security situation, at the same time make a prediction on slope stability, analysis slope supporting levels and strengthening state and predict the future deforming trend of the slope.