Study Of Metro Emergency Evacuation Problem Based On Passenger Flow Characteristics

With more and more cities of domestic open subway,subway passenger volume is also increasing year by year.Because of subway transport superiority,it has been the main way to relieve urban traffic pressure.As the subway stations are mostly in the closed underground space,resulting in long passenger evacuation route,passenger-intensive,fewer entrances and exits of the station,if occur an emergency situation,it will cause very serious consequences.It is a very important research topic to evacuate the passengers to the safe area outside the station in the shortest time after the sudden occurrence of the accident,in order to reduce the loss of passengers and property.According to the relevant literature at home and abroad,the paper analyzes the time characteristics of the passenger flow of the station,and classifies the emergent situation of the subway station.Analysis of domestic and international subway station emergencies,evacuation time is a very important factor,subway passenger flow evacuation should be based on reasonable passenger evacuation time for each step of the evacuation work.According to the "NFPA30: Standard of Railway Passenger Transport System",and Chinese "Subway Design Code"(GB50157.2013),the establishment of passenger evacuation model is based on analyzing the influence of passenger flow characteristics,station structure and station equipment to passenger evacuation time.Finally,taking LuKou Airport Station of Nanjing metro as an example,the author calculates the passenger evacuation time of LuKou Airport Station by means of evacuation time model,"Design Code for Subway"(GB50157.2013)and "NFPAl30: Railway Passenger Transport System Standard",it has been proved that the calculation result of evacuation time model in this paper conforms to the practical application of metro station,by compared the results of three kind calculations.Finally,according to passenger evacuation time to develop a more reasonable subway emergency evacuation plan passenger flow.The results of this paper put forward two suggestions for subway operation.In the case of passenger flow evacuation,according to the model of evacuation time in this paper,the evacuation time and the number of passengers need evacuated be predicted with the characteristics of station passenger flow.We should develop a more reasonable passenger evacuation plan.