Safety Risk Assessment Of Highway Construction In Mountainous Areas

With the rapid progress of our society and the vigorous development of our economy,the construction of transportation infrastructure is increasing day by day.As one of the important infrastructure in our country,highway plays a pivotal role in social and economic development,and the construction of Mountain Trunk Highway as a more complicated highway construction project involves a wide range of factors affecting construction safety,and there is a high degree of uncertainty,and the internal connection is complicated,which will hinder the construction process of mountain trunk highway.How to carry out risk assessment research on the construction safety risk of mountain trunk highway,especially in the remote areas of Inner Mongolia,and improve the safety and economic benefits of trunk highway construction in remote areas are an urgent problem to be solved.This paper analyzes the literature and case engineering,based on the complex construction environment and technical characteristics of the mountain Trunk Highway,first of all,starts with the basic theory of safety risk assessment of Mountain Trunk Highway Engineering Construction,analyzes the basic concept,constitutive elements and generating mechanism of risk,and puts forward the correlation principle,analogy principle and The principle of inertia and the principle of quantitative change to qualitative transformation are the five basic principles,and secondly,the basic process of risk assessment is pointed out: risk identification,analysis,estimation,evaluation and decision-making.Then from the overall and special two angles,the Mountain trunk Highway Construction Safety risk assessment.From the point of view of overall risk assessment,the index system method,expert investigation evaluation method and Accident tree analysis method are used,and the overall risk assessment Index system of bridge engineering and the overall risk assessment index system of cutting slope construction safety are established by using the index system method.From the point of view of special risk assessment,the activity Condition risk evaluation method,analytic hierarchy process and grey fuzzy comprehensive evaluation method are adopted,and finally,on the basis of analyzing the characteristics of highway construction safety assessment in mountainous areas,the safety risk assessment model of Mountain Trunk highway construction is determined,and the safety assessment is carried out in combination with Inner Mongolia Mountain Trunk Highway.The construction safety of the bridge and the construction safety of the cutting slope are evaluated by using the index system method and the accident tree analysis method.Then the analytic hierarchy process is used to evaluate the safety risk of high slope excavation,and the risk control ability is evaluated synthetically based on grey fuzzy method.Based on the safety risk analysis of Mountain Trunk highway construction,this paper establishes the safety risk assessment system of mountain Trunk highway construction,constructs the risk assessment model,and fully combines the knowledge of safety early warning theory,establishes the key points of safety prevention in construction stage,and puts forward the risk countermeasure and suggestion.