Influence of door numbers and platform height on interval tunnel evacuation under a moving subway train with fire
As a fire accident occurs when a train moves in tunnel,it cannot stop to evacuate immediately.The fire smoke of the moving train with fire accident and the narrow space make evacuation process seriously threatened.A smoke spread and interval tunnel evacuation simulation model under the moving train with fire was built.The differences in evacuation behavior were analyzed when there were four or five doors in a carriage and a walkway height of 0,0.3,0.7 and 1.2 m.The results show that smoke caused by the moving train with fire is mainly distributed in the downstream area of the fire source,and the personnel evacuation is extremely restricted in the downstream area of the fire source.The evacuation time of four doors in a carriage is more than that of the five doors in a carriage.The time of leave carriage increases with the increase of the evacuation walkway height,and the evacuation time also increases.The high-temperature smoke causes the congestion at the upstream exit to be higher than the downstream exit.The congestion at the upstream exit of the fire source decreases with the decrease of the evacuation walkway height,and the congestion at the downstream exit of the fire source decreases initially,but then increases.
subway tunneltrain firestrain door numberevacuation walkway heightinterval tunnel evacuation
国家科技期刊平台
NSTL
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