Research On Emergency Avacuation Model In Subway Station

With the high speed development of social economy, urban subway forms network. The subway as city important public traffic tool attracts a large of passenger flow because of its rapid and comfortable and punctual advantages, to a great extent, alleviating the road traffic congestion problems and being convenient for people to travel. However, the safety of subway is more and more serious. The unexpected events will cause number of casualties and property loss,such as large passenger flow, fire, gas leakage, terrorist attacks and so on, the consequence will be more serious if not timely and effective to evacuate people to a safe area. The evacuation problem under sudden accidents relates to many complex factors such as people and the environment and people-to-people interaction,then evacuation simulation model is established on the basis of these factors,which has certain guiding significance to the design of evacuation system and the organization of emergency evacuation.First of all,this paper analyses factors which affect the safe evacuation based on construction system in the station, sudden environmental accident and evacuation management. And also analyses behavioral characteristics of the evacuees from the staffs physical, cognitive, psychological, and special behavior impacted on special psychological.Second, the paper chooses the microscopic discrete model of cellular automata as modeling techniques based on the analysis and summary of existing evacuation models,which describes the factors that affect the evacuation,then establishs the emergency evacuation model of the subway station. Taking into account the familiarity and panic psychological factors of the environment,and introducing the influence coefficient of the station guide makes the model considered factors more comprehensive.The model proposes mobile standards when individual choices evacuation path,at the same time,has solved the problem that several persons compete the same gird.Finally, Visual C++development environment is used for the simulation of the evacuation process to simulate the dynamic process of the subway evacuation. And this paper analyzes the bottleneck of evacuation and discusses the relation between the station guide,personnel panic psychology and environmental familia and the evacuation time.