Study On The Method Of Tunnel Construction Risk Assessment Based On Set Pair Analyssis And Triangular Fuzzy Number

With the urgent need,and the rapid development of tunnel construction,the security problems of tunnel construction is becoming more and more widely attented.A large number scholars of domestic and foreign have conducted on the risk assessment study of tunnel and underground space engineering,and has made remarkable achievements.However,there are some engineering geological characteristics of concealment,complexity and uncertainty in tunnel engineering construction.In recent years,there still have many safety accidents,serious threat to people’s life and property safety.It follows that tunnel engineering risk assessment is still an imperfect subject,for example: strong subjectivity,practicality is not strong and high requirements of staff.So the tunnel engineering risk assessment research is still very urgent and important work.Based on the domestic and foreign research of tunnel engineering risk assessment,to solve the main defect,reference to the mathematical sciences research results of uncertainty problems —the set pair analysis(SPA)with triangular fuzzy set method.Accoding to the needs of Bijiashan tunnel construction of Guiyang-Qianxi highway in Guizhou province,carrid out the study of tunnel construction risk assessment based on the set pair analysis(SPA)with triangular fuzzy set method.The main works of the paper include:(1)Introducing the theory of set pair analysis in the field of mathematics,using the theory of set pair analysis coupled with triangular fuzzy number method to deal with uncertainty problem.According to this method to establish coupling method based on set pair analysis and triangular fuzzy number of tunnel construction risk assessment model.(2)The tunnel construction risk assessment model of set pair analysis(SPA)with triangular fuzzy number method is applied to the Bijiashan tunnel construction of Guiyang-Qianxi highway in Guizhou province.Based on the engineering practice,using this method in the risk assessment of tunnel construction stage,achieved the results of risk assessment.Comparing the results with the traditional methodand,confirmed that set pair analysis(SPA)with triangular fuzzy number tunnel risk evaluation method is feasible,reasonable and scientific and consistent with the actual situation.(3)Summarizes the steps and process of tunnel risk assessment theory of set pair analysis(SPA)with triangular fuzzy number.And the paper has made a contribution for the application of this method in the civil engineering.At the same time,it has pointed out the defects and shortcomings existing in the research,and looking forward to becoming more and more completed.