The Study Of Numerical Simulation Of Slope Stability And Anchor Cable Reinforcement

Landslide is one of the most important branches of slope engineering，involved extensiverailway、highway、mining and other engineering industris. In recent years, domestic and foreignscholars have attached great importance attention to the problem of slope instability，it isparticularly important in the project practice to seek rational and effective measure of landslidesupport.This paper introduces the mechanism of slope, discuss the landslide force characteristics,yield failure criteria of rock and soil material and slope failure criterion. And mainly arranges theprestressed anchor reinforcement slope mechanism and the physical properties effect of theanchor effect on anchorage body, deduct calculation formula of anchoring force and anchoragelength for soil slope.This article used the theoretical analysis,numerical simulation and fieldmonitoring data combined method,make the sanmiaoxiang landslide of the sichuan province asthe object,base on the a large of the geological and hydrological data of the study area,combinedwith the geological survey、design、monitoring、fieldand indoor geotechnical test etc.Simulationof the slope under the natural state stability with the finite difference software FLAC3D,the resultshows that the slope is in creep stage, and with the monitoring data for comparativeanalysis.Indicate the simulation results is correctly. Considering the local hydrogeologicalconditions, through the numerical simulation analysis of rainfall and earthquake effect on slopestability, show that rainfall and earthquake have great effect on slope stability influence, safetycoefficient reduces. Redistribution of stress, displacement increases, causing the instability ofslope sliding. Consider the use of anchor cable and anti sliding pile two scheme of slopereinforcement, analysis shows that use anchor to support slope can provide active stressdominated,make the slope distribution of principal stress change, stress direction adjustment andanchoring force direction is consistent, active stress spread to the surrounding, so achieve theeffect of slope reinforcement.of possibility,make the numerical simulation of prestressed anchorcable to reinforce slope under the rainfall and earthquake.The simulation results show thatprestressed anchor cable force makes the slope stress redistribution,so make the slope stability.