Highway roadside landslide stability analysis and management research

Abstract

In order to manage the landslide on the side of a highway, the main sliding surface of the slope was determined by combining the monitoring data; and the finite element model was constructed to analyze the stress field and displacement field of the slope, and it was determined that the stability coefficient of the slope before the reinforcement did not satisfy the requirements of the engineering specification, and it was in the state of understability; the reinforcement scheme of "double-row skid-resistant piles + intercepting and draining Based on the analysis results and experts' opinions, the "double-row anti-slip pile + cut-off drainage" reinforcement scheme is formulated, and numerical analysis is used to analyze the stress and displacement changes of the reinforced slope and anti-slip pile, which verifies the feasibility of the reinforcement scheme. The research results show that: (1) the stability coefficient of the main slip surface of the slope before reinforcement is 0.913, which does not meet the requirements of engineering specifications. (2) The plastic deformation around the anti-slip pile after reinforcement is obviously reduced relative to that before reinforcement, indicating that the reinforcement scheme is effective. (3) The stability coefficient of the main section after reinforcement is improved by 30% relative to that before reinforcement, indicating that the reinforcement scheme is feasible.