Stability And Optimal Analysis Of Rock High Slope Of A Three Platform Of Zhun-Shuo Railway

With the development of national transportation,the railway network is becoming more and more dense.A railway may pass through several provinces and naturally encounter various engineering geological conditions.In order to meet the design needs,many deep-cut cutting slopes have been produced.In order to ensure the normal operation of the train,the stability of high slope along the line has been paid more and more attention.Based on the project of high slope treatment along Zhun-shuo railway,this paper selects the DK199+696 rock high slope of central pile number Using ABAQUS and Geo Studio software to analyze the stability under normal and rainfall conditions.Using ABAQUS software to analyze the stability under the condition of high slope excavation,the parameters of anti-slide pile are optimized and analyzed.The main findings are as follows:(1)The stability of the slope under normal and rainstorm conditions is analyzed based on ABAQUS and Geo Studio software.(2)Analysis of slope stability under excavation conditions.The smaller the excavation depth and the smaller the slope ratio,the greater the stability coefficient and the more stable the slope,but the larger the excavation amount,the higher the construction cost.(3)By setting slope ratio of 1: 0.75,1: 1,1: 1.25;excavation depth is 8m,10 m,12m,primary slope and secondary slope platform width of 2.5m,3.5m,4.5m respectively,obtained by abaqus modeling results,the sensitivity of slope ratio to slope stability coefficient is higher than that of platform width and excavation depth.(4)The change law of plastic zone,displacement,stability coefficient and displacement of anti-slide pile with different design parameters(pile position,pile spacing,pile cross section form)is analyzed based on ABAQUS simulation.The optimal reinforcement scheme of anti-slide pile with 4 m、pile spacing is square、the position of anti-slide pile is put forward at the platform of secondary slope.