Research On Emergency Evacuation Of Metro Station Based On Cellular Automata

Metro transfer stations are important network nodes which can connect various Metro lines effectively.Compared with other ordinary stations,subway transfer stations have the characteristics of complex space structure,large passenger flow and concentration of personnel.Once an emergency occurs in a transfer station,mass trampling casualties are easy to be caused because of the unfamiliarity of passengers with the environment and transfer facilities.In this paper,pedestrians in metro transfer stations are taken as the research object.On the basis of obtaining pedestrian's psychological and behavioral characteristics from field investigation,the important factors affecting pedestrian evacuation are obtained.Then,typical pedestrian's psychological and behavioral characteristics are selected as the influencing factors.Based on the traditional cellular automata model,the corresponding improved model was established and the safety of metro stations was simulated by software.The sexual indicators were explored.Firstly,analyzing the psychological and behavioral characteristics of evacuees in the process of emergency evacuation through the investigation of pedestrian questionnaires.On this basis,the important factors affecting evacuation were analyzed concretely,including evacuees' walking speed,physiological factors,psychological factors and evacuation environmental factors.Secondly,aiming at the data mining processing of field investigation,the quantitative analysis of the psychological and behavioral characteristics of pedestrians in the process of emergency evacuation was carried out,and constructing the micro-psychological and behavioral characteristics of evacuees.Then the psychological and behavioral characteristics of evacuees in emergencies were modeled respectively.Finally,establishing the simulation program by using MATLAB based on the example analysis,and the validity of the model was verified by setting up experiments.Taking BeiDaJie Metro Transfer Station in Xi'an City as an example,the dynamic simulation was implemented to visually reflect the characteristics of evacuees' escape behavior selection at the transfer station,and the rated number of evacuees and accident-prone locations were proposed according to the current situation of the facilities.