In recent years, terrorist attacks all over the world caused many civilian casualties seriously. Under the knife and axe terrorist attack, there are usually four groups of event-related persons, that is, pedestrians, terrorists, police, and safety guards in the scene. The behavior of them is different, but they are rarely considered together in existing litterateurs, especially the police and safety guards. In this paper, we propose the FFPS (extended floor-field model combined with on-site control actions of police and safety guards) model to study pedestrian evacuation dynamics considering terrorist attack on-site control action differences between police and security guards. The FFPS model consists of three aspects. First, pedestrian evacuation dynamics in terrorist attack environment is modeled. Second, the behavior of terrorists, police and safety guards is studied. Third, the differences of on-site control actions between police and safety guards are studied. We set up the scenario for simulation. The influence of terrorists’ number and location, police and security guards’ different actions, police entering time, police shooting distance, police and safety guards’ spatial position, and police control strategy on evacuation dynamics are analyzed in detail. Those results provide valuable insights to quickly control terrorists, and sharply reduce casualties in terrorist attack environment.

中文翻译：

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考虑恐怖袭击现场控制行动警察与保安差异的行人疏散动态

近年来，世界各地发生恐怖袭击事件，造成大量平民伤亡。刀斧恐怖袭击下，现场通常有四组事件相关人员，即行人、恐怖分子、警察、保安。他们的行为各有不同，但现有的文献很少将他们放在一起考虑，尤其是警察和保安。在本文中，我们提出了FFPS（扩展地板场模型结合警察和保安人员的现场控制动作）模型来研究考虑警察和保安人员之间的恐怖袭击现场控制动作差异的行人疏散动力学。 FFPS模型由三个方面组成。首先，对恐怖袭击环境下的行人疏散动态进行建模。其次，研究恐怖分子、警察和保安人员的行为。第三，研究了警察和保安人员现场控制行为的差异。我们设置了模拟场景。详细分析了恐怖分子的数量和位置、警察和保安的不同动作、警察进入时间、警察射击距离、警察和保安的空间位置以及警察控制策略对疏散动态的影响。这些结果为快速控制恐怖分子、大幅减少恐怖袭击环境中的人员伤亡提供了宝贵的见解。