Research On Operational Safety Risk Assessment And Index System Of Urban Rail Transit

At present,the development of China's urban rail transit is changing with each passing day,subway lines are gradually increasing,and the coverage area is becoming wider and wider.Urban rail transit has entered the era of information technology.This paper collects statistics on subway accidents at home and abroad,finds the main types of subway accidents at home and abroad,and concludes that the accidents change with the year,month,week,and day.Through the analysis of the mechanism of accident causes,the elements affecting subway operations are divided into four aspects: “human-machine-environment-management”.Using system safety knowledge,an interpretation model is constructed for the subway operation system,and the risk factors are stratified.A level of analysis to learn the relationship between elements.The risk assessment model of a city's subway system was constructed,and the triangular fuzzy numbers were applied to the analytic hierarchy process to calculate the weight of each index.Finally,applying the risk grading theory,the four subsystems of the subway operation safety system are divided according to different levels of risk,and a fuzzy comprehensive evaluation method is used to determine the risk level of the system.