Numerical Analysis and Reinforcement Management of Slopes

Abstract

In order to manage a roadside landslide, a qualitative and quantitative stability analysis of the main landslide face was carried out based on the ground investigation data; a numerical analysis model was constructed to analyze the stress field, displacement field and stability coefficient change of the main landslide face, which verified the reliability of the results from qualitative and quantitative analyses; a numerical calculation was carried out to analyze the stress field calculation and stability coefficient change of the formulated "Anchor + Drainage" reinforcement scheme; the feasibility and reliability of the reinforcement scheme were also verified. Numerical calculations were used to calculate the stress field, displacement field and stability coefficient changes of the proposed "anchor + cut-off drainage" reinforcement scheme, which verified the feasibility and reliability of the reinforcement scheme. The results show that: (1) the qualitative and quantitative analysis results are relatively reliable, and the stability coefficient of the slope before reinforcement does not meet the requirements of the engineering specification, which indicates that the slope is unstable and there is a risk of deformation damage. (2) The average stress and displacement changes of the slope after reinforcement are significantly reduced, and the average stress and displacement of the anchors are increased, indicating that the reinforcement program effectively prevents the deformation and sliding of the slope. (3) The stability coefficient of the slope after reinforcement is improved by 25.9% relative to that before reinforcement, indicating that the reinforcement scheme is feasible.