High Slope Construction At Highway Cuts Security Risk Assessment

With the rapid progress of our society and the vigorous development of the economy,the pace of transport infrastructure construction is accelerating.In the process of the development and construction of the western mountainous areas,there are many high cuttings due to their special geographical environment.There are certain risks in the construction of these forms of high slopes,which can affect some of the effects of the road in construction.Therefore,we need to improve the risk assessment theory and index system of highway high cuttings through efforts.Based on predecessors' research results,combined with the actual situation in our country,this thesis will focus on the construction of highway roadbed slope safety risk,try to from the perspective of a number of factors,the stage of high cutting slope construction safety risk evaluation,and also will analysis high cutting slope of highway construction stage of risk factors,according to different forms of highway roadbed,take different evaluation index.Every method is not everything,so the slope construction phase of the safety risk assessment theory is one of the developing trend of complement each other,the two or more methods combined with the application.Firstly,the author thinks that the risk factors affecting the stability of the slope should be identified first,and then the risk factors should be found.The risk factors are mainly derived from the scale of construction,the conditions of geology,the induced factors,the environment of construction and the integrity of the data.Then it USES the expert survey method and the index system method to evaluate the safety risk of the construction of the highway.Expert investigation method,mainly rely on some experts of high cutting slope of professional knowledge and experience,through the investigation on the spot,on the basis of according to the characteristics of the scale of the project construction,engineering,construction of environmental aspects synthetically to make the corresponding evaluation and forecast of a kind of way.Index system method,is based on the scale of construction,geological conditions,induced factors,construction environment,data integrity index can be divided into five main reflection of the high cutting slope risk categories.On the basis of index classification,the evaluation index is put forward.At the same time,the activity of the construction work around the perimeter,especially the piling and blasting.It is necessary to determine whether the two factors affect the construction safety of the highway in high slope.If the impact is made,the two indicators of piling and blasting need to be added in the current index system.Finally,the construction safety risk of a highway in guangzhou is evaluated.Through the discussion of evaluation methods and evaluation indexes,the evaluation theory and index system of construction safety risk of high slope construction will be further improved,which makes the conclusion of risk assessment more reliable.