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随着地铁站等大规模半封闭式交通枢纽的增加,其应急疏散问题受到了越来越多的关注。以社会力行人疏散仿真模型为基础,将毒气扩散模型添加到仿真环境中,改进原有的社会力模型,建立符合地铁站发生毒气恐怖事件时的行人应急疏散模型,称其为整合社会力模型。该模型在原有社会力模型中添加了行人之间的凝聚力和紧急情况时反映人心理的紧张因子,并与毒气扩散仿真环境进行整合,能较为真实的反应出突发事件发生前后人群疏散的整个过程。最后利用提出的新仿真模型模拟出地铁站突发毒气恐怖事件的背景下对乘客进行疏散的过程,指出及时发现毒气源、有效引导疏散的重要性。
With the increase of large-scale semi-enclosed transportation hubs such as subway stations, emergency evacuation has drawn more and more attention. Based on the evacuation simulation model of social forces, the model of diffusion of toxic gas is added to the simulation environment to improve the original model of social forces and establish a model of pedestrian emergency evacuation in line with the metro-gas terrorist incident in the subway station, which is called the integrated social force model . The model adds the cohesion between pedestrians and the stress factor reflecting the psychology in emergencies in the original social force model and integrates with the toxic gas diffusion simulation environment to more accurately reflect the entire population evacuation before and after the emergency event process. In the end, the new simulation model is used to simulate the evacuation of passengers in the background of the sudden poisonous gas terrorist incident in the subway station. It is pointed out that the importance of timely detection of toxic gas sources and effective guidance of evacuation should be pointed out.