A model for correcting speed of evacuation from subway station considering human-environment factors

doi:10.16265/j.cnki.issn1003-3033.2017.08.004

Abstract

Abstract: In order to improve the efficiency of crowd evacuation in subway accident, a model taking human-environment factors into account was built for correcting speed of evacuation from subway stations. Before building the model, emergency evacuation design requirements of subway stations and factors affecting the crowd evacuation were analyzed from two aspects of human and environment. Eight factors influencing the speed, such as the subway structure, carrying baggage and others, were identified, and an index system was established for evaluation of the effect on speed. The entropy values of speed indexes were calculated to determine the speed correction value using the unascertained measure theory. The model was applied to a fire accident in a subway station in Xi'an city, for which a simulation of crow evacuation was made. The results show that the total time of evacuation simulated is 264.0 s before the speed correction, and the total time of evacuation after speed correction is 337.0 s,that is to say correction makes the evacuation time longer and the personnel risk greater.

Key words: emergency evacuation, speed correction model, uncertainty measure, factor influencing speed, subway station

CLC Number:

X913.4

ZHENG Xiazhong, XIANG Leilei, JIN Lianghai, CHEN Shu, CHEN Yangao. A model for correcting speed of evacuation from subway station considering human-environment factors[J]. China Safety Science Journal, 2017, 27(8): 19-24.

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