Study On Monitoring Analysis And Safety Early Warning Research Of The Stability Of Wachangping Slope Of Yaxi Expressway

According to statistics in recent years,China's annual economic loss of nearly30 billion yuan is caused by unstable slopes.In order to avoid accidents or reduce losses,effective measures can be taken in a timely manner based on monitoring and early warning.This article takes Wachangping slope as the object,and analyzes the deformation and failure characteristics of the slope based on comprehensive data collection and engineering geological conditions.Combining with the current deformation stage of the Wachangping slope,a practical monitoring program is formulated,and automatic monitoring of the Wachangping slope is developed.Through FLAC^3D numerical simulation,the deformation of the slope before and after the supporting measures is compared with the monitoring results.According to the slope monitoring plan,the slope early warning system was established,and the slope early warning indicators and early warning system were preliminarily formulated.The main research results of this article are as follows:?1?Combining the preliminary engineering data and on-site investigation,analyze the deformation characteristics,stability influencing factors and the supporting measures of the Wachangping slope of Yaxi Expressway.?2?On the basis of fully understanding the engineering background of the research object,the monitoring purpose is clear,and the slope monitoring system is designed and constructed;based on the obtained monitoring data,the rainfall,the displacement of the slope body and the stress of the supporting structure are compared systematically Ground analysis and evaluation of slope stability based on monitoring results.?3?FLAC^3D numerical simulation software is used to simulate and analyze the deformation and stability of the slope before and after the support measures are taken.The distribution characteristics of the displacement,stress and plastic zone of the slope body before and after the support are systematically analyzed,and the simulation results are compared with Comparison of monitoring results to further evaluate the stability of the slope.?4?Using slope early warning classification and early warning index research,combined with the deformation characteristics and stability status of Wachangping slope,a number of early warning indexes are proposed,including rainfall early warning index,total slope deformation early warning index,and slope deformation The rate early warning index and the early warning index of the macroscopic signs of the slope have finally constructed a comprehensive early warning system.