Analysis And Evaluation Of Fire Safety Of Urban Subway

Safety is a prerequisite for good operation of urban rail transit,and daily operations cannot be separated from the discussion and research on safety.At present,China’s urban rail transit system is developing rapidly,operating lines are constantly increasing and the scale is constantly expanding;mileage has steadily increased,and passenger traffic has increased significantly.At the same time,more and more security issues emerged during operations.Among them,fire accidents have received widespread attention due to their high frequency and serious consequences.Through research,it is found that there are many fire risk factors in subway stations.Not only is it difficult to predict and difficult to prevent and control,but because the subway itself is closed and the environment is limited,once a fire accident occurs,it will cause a lot of casualties and serious economic losses.In recent years,China’s risk management model has gradually changed from passive to active,and post-analysis has been transformed into ex ante prevention.Therefore,the research on the mechanism,evolution,and danger of influencing factors affecting subway fire safety;the comprehensive identification,control,and scientific risk assessment of research are particularly important.Through statistical analysis of classic subway fire accident cases at home and abroad in the past sixty years,the main types of fire occurrences,the distribution pattern of fire accident consequence levels,the correlation between fire accident cause types and the severity of injuries were investigated;the fault tree analysis method was used to estimate the subway The evolution process of the fire accident is qualitatively analyzed,and the minimum diameter set,minimum cut set,and structural importance are obtained.Explore the ways of subway fire occurrence,prevention and control,and the main and secondary factors affecting fire safety;divide the fire safety evaluation index system into four categories: evacuation ability,fire extinguishing ability,safety management ability,fire prevention ability,12 secondary indicators,and The 36 thirdlevel indicators are determined by the function of group decision-making in the analytic software yaahp.In addition,according to the research results and the actual situation of the subway,the evaluation index levels are divided,and a multi-level matter-element subway fire safety evaluation model is established.Taking the X subway as a case study,the safety evaluation of the system and subsystems and individual indicators is performed to determine its safety status.Based on the reliability of the constructed model,it provides strong support for subway fire prevention and control.