Simulation Research On Safe Evacuation In Subway Station

The advantage of the subway is self-evident in the urban public transport,but the subway operating environment mostly located under the ground,meanwhile,the passenger volume is large,space is closed,in the event of fire?explosion?earthquake and other emergencies,people's evacuation behavior is very complex,because they not only bear the negative impact of the accident itself,but also bear considerable psychological pressure,which can easily lead to a large number of deaths,the security risks of subway emergency evacuation are serious.Herd is inherent psychological characteristics of human beings,especially in the emergency evacuation of this particular environment cannot be completely eliminated,and the interaction influence between human beings?human beings and environment,and other dynamic factors are likely to have a significant impact on the evacuation results.Based on the existing domestic and foreign research results,this paper analyzes the psychological and behavioral of the emergency evacuation in subway station.And put forward the concept of herd coefficient in the simulation,by setting the position and quantity of the evacuees to simulate the conformity phenomenon caused by herd mentality in the emergency evacuation.Based on the principle of multi-agent modeling,this article establishes a personnel emergency evacuation model by AnyLogic simulation platform that incorporates social forces,validates the model through computer simulation experiments,and obtains the influence of crowd herd psychology on emergency evacuation time: when conformity coefficient is less than 0.4,the herd mentality plays a favorable guiding role,evacuation efficiency is the highest when the coefficient is 0.2;when coefficient is greater than 0.4,the evacuation time is increasing,herd behavior reduce the efficiency seriously.Finally,take subway station as the research background,established a microcosmic simulation model of Shenyang North subway station to simulate pedestrian behavior to observe the evacuation process in different herd mentality.Compared the simulation results of this example model with previous theoretical results,prove the validity of simulation system and the practicability of this paper's conclusion.The research results of the paper will provide theoretical and methodological guidance for the scientific development and modification of the management of the subway station and emergency evacuation plan,and provides guidance to the safety management personnel.It is effective to eliminate the emergency evacuation time and effectively eliminate the subway station accidents and reduce the loss of accidents is of great significance.