Research On Safety Comprehensive Evaluation Of Highway Slope Based On Automatic Real-time Monitoring

The number of highway slopes and the scale of new construction in our country are among the top in the world.In order to ensure the safety of highway slope and to determine the degree of influence of engineering activities or environmental conditions,the safety evaluation of highway slopes must be carried out.Due to the uncertainty of the influencing factors and the ambiguity of the nature of the slope,monitoring methods are generally used to obtain the safety status of the slope in actual engineering.However,although the work on highway slope monitoring has made great progress,it is still slightly inadequate in the comprehensive utilization and integration of monitoring information,and the multi-source monitoring information of highway slopes cannot be effectively reflected in the safety comprehensive evaluation system.In response to the above problems,the thesis takes a cutting slope as the research object,based on the engineering characteristics and the slope deformation and failure mechanism,the automatic real-time monitoring system of the cutting slope is designed,and the monitoring system is divided into different modules according to the different functions,giving the monitoring system strong scalability.Based on the real-time automated monitoring data of highway slopes,using grey system theory and fuzzy analytic hierarchy process,the multi-source monitoring information of the automated monitoring system is effectively integrated into the slope safety evaluation system,and the comprehensive safety evaluation of highway slopes is carried out.(1)Based on the engineering characteristics and the deformation mechanism of the slope,an automatic real-time monitoring system is designed for the cutting slope,and the monitoring system is divided into different modules according to the different functions.(2)The slope real-time monitoring data is preprocseeed by using the Rhineda criterion and interpolation algorithm and a gray prediction model is built to predict the development trend of slope deformation,realizing the prediction of slope deformation and stability.Based on the processed highway slope monitoring data,the information about slope deformation is extracted and the safety of highway slope monitoring points is evaluated.(3)The fuzzy analytic hierarchy process is introduced to construct a highway slope safety evaluation index system.The multi-source influence factors of highway slope safety is comprehensively considered to determine the safety level of highway slopes,and the overall safety status of highway slopes is evaluated.The slope safety evaluation and early warning system is established based on the evaluation results.