Accidents in chemical industrial parks can result in mass casualties and the risk usually escalates due to domino effects. However, most of the existing models of emergency logistics do not account for domino effect and may be unsuitable for emergency response to accidents in chemical industrial parks. This paper presents a mathematical model proposed for optimal assignments of allocating and scheduling emergency resources for rescuing victims and preventing accident spreading simultaneously. The detailed characteristics of accident scenarios and emergency resources are taken into account. Based on this, the efficiency of emergency response is evaluated by the total number of fatalities and the amount of losses caused by domino effects which are the optimal objectives of the model. A numerical case study was conducted by solving the model using a designed heuristic algorithm. The results showed the applicability and reliability of the proposed model for making optimal assignments for emergency response to accidents in chemical industrial parks.

化学工业园区的事故可能导致大量人员伤亡，并且由于多米诺骨牌效应，风险通常会升级。但是，大多数现有的应急物流模型都无法说明多米诺骨牌效应，因此可能不适用于化学工业园区对事故的应急响应。本文提出了一个数学模型，该模型旨在为紧急情况下的应急人员分配和调度应急资源的最佳分配。考虑了事故场景和紧急资源的详细特征。在此基础上，通过死亡总数和多米诺骨牌效应（该模型的最佳目标）造成的损失量来评估应急响应的效率。通过使用设计的启发式算法求解模型来进行数值案例研究。结果表明，所提出的模型可用于化学工业园区事故应急响应的最佳分配。