Research On Risk Propagation Laws Of Operation Sudden Accident In Subway Network

In recent years,the construction of subway lines has become faster and faster,the structure of the subway network has become more and more complex while it has become more intelligent in terms of operation and management in major cities in China.The urban subway network is a complex network that connects multiple subway lines through some transfer stations.Once operation sudden accident occurs at a single point of one line,the accident risk will spread to the entire line even other lines through transfer stations quickly,and then affects the safety and efficiency of operation of the entire subway network.Therefore,it is of great significance to study the propagation law of operational accident risk in the subway network.A research idea called point-to-line-to-network was used in this study,which started from sudden operation accident of a single point.Firstly,the propagation law of subway operation accident risk through single line was obtained through establishing a risk propagation model of subway operation sudden accident and taking the Line 2 of Beijing Metro as an example.Secondly,the risk indicators of the transfer station were determined by qualitative analysis and quantitative calculation,then the evolution laws of the operation sudden accident risk in the transfer station through Anylogic simulation analysis were obtained.Finally,based on the above research,the risk propagation law of operation sudden accident in subway network was obtained by taking the Beijing subway network as an example.The risk propagation law of operation sudden accident in subway network has importance to formulate the corresponding emergency linkage measures of network,and the ability that the subway operation system to cope with and handle abnormal events.