| Subway is one of the modern urban rail transportation, personnel is numerous in subway train, once there is a fire, may cause significant casualties, may also happen group die group of injury accidents. Therefore, research on the safety evacuation of subway train under fire condition, puts forward safety evacuation preparedness of subway train and effective technical measures, which can effectively prevent and reduce fire casualties, guarantee personnel life safety furthest. So in this paper the research on safety evacuation preparedness of subway train under fire has certain practical significance.This paper taking line 1 of Chengdu subway for research object, analyzed and studied the safety evacuation of subway train by adopting combination of research methods of on-the-spot investigation, theoretical analysis and numerical simulation. This paper first analyzed the fire reasons and fire harmfulness of subway, introduced the present research situation of the safety evacuation technology; then Cheng Du subway was introduced, then simulated and analyzed the evacuation of subway under four cases:normal condition, fire happened in carriage 1, fire happened in carriage 2, fire happened in carriage 3, by using numerical simulation software Pathfinder and BuildingExodus, and did a comparative analysis of the numerical simulation results; finally proposed subway fire prevention measures, combined with numerical simulation results and reference, put forward safety evacuation preparedness when subway train in running tunnel and station, and put forward some prevention measures and technical measures to guarantee subway personnel life safety. There exist certain disparity when did numerical simulation by using software Pathfinder and BuildingExodus, but calculation results was close, which shows the evacuation simulation result is reasonable and credible. |
