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为提高地铁站突发事件人群疏散效率,构建融合人-环特征的地铁站人群疏散速度修正模型。首先从人员、环境2个方面,分析地铁站突发事件疏散设计要求及人群疏散影响因素,选取地铁结构、携带行李等8个速度影响因子,建立速度影响指标体系;然后采用未确知测度理论,计算速度指标熵值,确定速度修正量值;最后以某地铁站火灾事故为例,修正人员移动速度,设置疏散个体参数,仿真地铁站火灾疏散过程。结果表明:速度修正前地铁站疏散仿真总时间为264.0 s,修正后疏散总时间为337.0 s,仿真修正后的疏散时间更长,人员危险性更大。
In order to improve the evacuation efficiency of the crowd in subway station, this paper constructs a modified model of evacuation speed of metro station population with human-ring characteristics. Firstly, the paper analyzes the evacuation design requirements and the evacuation factors of crowd evacuation in subway station from two aspects of personnel and environment, selects eight speed influence factors such as metro structure and baggage, and establishes the speed impact index system; then uses the unascertained measure theory , Calculate the entropy of speed index and determine the value of speed correction. Finally, take a subway station fire accident as an example, modify the speed of personnel movement, set the individual parameters of evacuation and simulate the evacuation process of subway station. The results show that the total time of evacuation simulation for subway station before speed correction is 264.0s, the total evacuation time is 337.0s, the evacuation time after simulation modification is longer, and the risk of personnel is greater.