Safety Evaluation Technology Of Soil Slope Based On Deformation Monitoring

With the rapid development of economy in our country,the process of transportation infrastructure construction has also been developed.Whether it is the construction of roads,railways or water conservancy project involves the soil slope engineering problems.Because of the complex topography and geological conditions of our country,there are many different kinds of geological disasters which may result in great destruction.The problem of slope stability in engineering construction has been increasingly emphasized.This paper mainly describes the from different angles(according to the soil characteristics,according to the soil structure,according to the characteristics of slope deformation,according to the slope geometry)on soil slope make the corresponding.classification,and on the slope of each failure type and its motion characteristics and damage mechanism of summary analysis.Analysis of the impact of geometric factors and mechanical parameters of soil,when the slope height or angle increases will make the safety coefficient of the slope reduce,slope soil cohesion or internal friction angle increases,slope safety factor will increase.In order to facilitate the discussion,we will in the homogeneous soil slope as a representative analysis,by using FLAC3D numerical simulation software,to build the typical model for homogeneous soil slope,using strength reduction on the slope of the "initial deformation gradually development ultimately undermine" the whole process of research and analysis,draw the relation between the change of the slope stability coefficient with the development law of the whole process of slope deformation evolution process and relationship between the slope displacement information and the safety factor.In the use of FLAC3D strength reduction method,when the slope failure occurs,it can be seen from the horizontal displacement diagram,in the slope will form a "boundary",that is,the slope of the sliding surface.By means of homogeneous earth slope deformation and failure characteristics were analyzed,and draw a circular arc sliding damage to the main damage form of the homogeneous soil slope,the important position of monitoring points should be set on the slope toe slightly trailing edge cracking parts to peak area,we should especially focus on the top edge after the fracture zone and slope toe slightly on site.The whole process of the development of slope soil mass displacement can be fully reflected by the stage of(linear deformation stage,accelerated deformation stage,violent deformation stage)three slope deformation.Based on the calculated displacement data,1stOpt combined with automatic search function,the fitting formula can that said "angle","displacement" and "tilt angle,displacement" respectively with the general formula of the nonlinear relationship between safety factor.Finally,it is concluded that the "information of the displacement and slope stability evaluation method system.The Guangzhou Zengcheng and Conghua Expressway blocks extension K14+380 to K14+600 on the right side of the safety monitoring methods and monitoring results are introduced in the paper.At the same time,the proposed method will applied to the slope stability evaluation.According to the measured displacement data,real-time grasp the slope of the steady state,providing practical reference to the slope safety monitoring and stability analysis of the road.