Stability Analysis Of High Slope And Optimum Design Of Treatment Scheme

With the continuous construction of transportation infrastructure,large-scale geological disasters occur frequently,among which landslide disasters are particularly prominent,seriously affecting the safety of people’s lives and property.Based on the high slope treatment project of K4+600~K4+700 section of Qili connecting line of Hangxinjing Express way in Quzhou City,this paper evaluates the stability of high slope based on actual monitoring data,and puts forward the feasibility of optimizing anti-slide piles.Based on the limit equilibrium method,the stability of high slope under different working conditions is analyzed.Based on the strength reduction method,the stability of high slope under nat ural and rainstorm conditions is analyzed by FLAC3D software,and compared with the actual monitoring data.On the basis of stability analysis,FLAC3D software is used to optimize the pile position,pile spacing,pile length and cross-sectional area of high slope anti-slide piles.The achievements are as follows:(1)Analyzing the monitoring data of high slope,combining with the field geological survey data,evaluating the stability of high slope,and putting forward the feasibility of optimizing the anti-slide pile of K4+600~K4+700 section of high slope.(2)According to the engineering geological conditions of high slopes,a two-dimensional calculation model of high slopes is established.The limit equilibrium method is used to analyze the high slopes under natural,rainstorm and earthquake conditions,and the safety factors under different conditions are obtained.At the same time,the reliability of the high slope is analyzed,and the failure probability of the high slope is put forward.On this basis,the sensitivity of the stability of the high slope to various influencing factors is studied.(3)The three-dimensional calculation model of high slope is established by FLAC3D software,and the stability of high slope under natural and rainstorm conditions is studied by strength reduction method.The validity of the simulation is verified by comparing with the actual monitoring data.Based on FLAC3D software,the displacement and stability coefficients of high slope under different parameters(pile position,pile length,pile spacing,pile cross section)are analyzed,and the optimal reinforcement scheme of anti-slide pile is put forward considering economic benefits.