The Risk Pre-warning Technology On Large Passenger Flow Evacuation In Subway

Subway transportation may occur in the process of fire,conflict,the train derailment,road casualties,sudden large passenger flow,equipment failures trample accident,to avoid the secondary damage large passenger flow evacuation work is particularly important.As a result,the subway large passenger flow evacuation safety analysis has brought to the attention of the people,if we can put forward effective large passenger flow evacuation evaluation method and system,combined with the specific station simulation debugging,can increase the speed of the rescue,reduce the big events of the passenger flow,improve the subway large passenger evacuation safety is very important.This paper through the analytic hierarchy process(AHP),Delphi method,large passenger flow of subway evacuation safety risk factors identification,establish a system of large passenger flow evacuation framework,risk pre-warning based on rough set theory to extract the core index,and the subway traffic warning level and threshold.In order to realize subway evacuation warning function,based on the self-organizing competitive neural network(artificial neural network,ANN)model,input the core index,through Matlab neural network Toolbox(neural network Toolbox,NNbox)calculation,the model is applied to in the field of metro safety pre-warning for the first time.Then,field survey,xi 'an road subway station in Dalian Anylogic simulation software is adopted to improve the actual traffic simulation,traffic warning key point,through the key points of monitoring,real-time grasp the key points of the passenger flow density,map traffic density,to calculate traffic warning time.Into the higher level of warning in order to effectively shorten the time and facilities decoration of xi 'an road station,traffic guidance puts forward four kinds of the improved scheme,and integration analysis,scheme of four kinds of improved greatly reduces the station hall,congestion phenomena,such as platform to validate the rationality of the integration plan,work for xi 'an road station of large passenger flow evacuation provides reference.Pre-warning platform,and finally establish the subway large passenger flow evacuation simulation demonstration,pre-warning system for subway evacuation profile in the subway is convenient,the safety risk factors,pre-warning screened,contingency plans and evaluation questionnaire to see and learn,guide evacuation passenger flow field safety management work.