Risk Identification And Application Research Of Highway Slope Engineering

With the rapid development of China’s highway transportation,the scale of highway slope construction involved has increased year by year.The construction of slope is a dynamic and changeable process,and the project has the characteristics of long construction period,difficult construction,large investment and extensive engineering construction.There are many uncertainties in the slope construction process,which makes it difficult to guarantee construction safety.At the same time,the 14 th Five-Year Plan clearly points out the need to comprehensively improve the ability to identify hidden dangers,but the current risk management research on highway slope risk identification is still slightly lacking.Therefore,it is of practical significance to carry out the risk identification research of highway slope engineering.This thesis comprehensively uses literature collection,field research,expert investigation,theoretical analysis and other methods to carry out the risk identification research of cutting slope engineering.Relying on the slope project of YA10 section of Puyan Expressway,the risk identification and application of the slope project of the graben slope project is applied.In the establishment of index system,the cause of accidents and the refined identification of risk sources were carried out research and exploration.The research work and results of the thesis are as follows:(1)The analytic hierarchy method and the Kent method were used to establish the framework of risk index system,collect and sort out relevant literature,norms,standards and other materials at home and abroad to summarize the risk factors of cutting slope engineering,and on this basis,supplement the risk factors through expert brainstorming,and use the optimized Delphi method to screen and sort out the risk factors,and finally form a relatively complete risk identification index system.(2)The mutation theory of nonlinear mathematics is introduced,combined with the theory of accident cause,a slope engineering accident cause model is constructed with unsafe behavior of people and unsafe state of things as control parameters and slope safety as state parameters.The model is further analyzed to point out the countermeasures that should be taken in different slope safety states to prevent the occurrence of risks.(3)The coupling matrix of project decomposition structure and risk decomposition structure is established for the refinement risk identification of cutting slopes,and on this basis,a three-dimensional risk source identification model is constructed based on the analysis of typical risk accidents in engineering measures,and the preliminary judgment of the main risk factors is realized on the basis of the establishment of the risk identification index system.