Research On The Allocation Of Relief Supplies For Subway Emergencies

With the rapid development of subway system in China, the influence of the subway in the city traffic also grows as the days passed, and at the same time, the subway is in the ground, relatively closed, and of the huge traffic, once the incident occurred, such as the train collision, fire etc, it is extremely easy causing many casualties, and leading to serious economic losses. In the face of emergencies, timely and effective control of the developing process has become of paramount importance of the rescue work. The key of subway rescue work is the allocation of relief supplies, emergency relief supplies in place can not only avoid the deterioration of the situation, better able to restore the property, to save lives.The allocation of relief supplies is a systematic process. This process covers the emergency station location and the preparatory phase of the relief supplies before the subway emergencies, distribution of relief supplies during the subway emergencies. All are indispensable. This paper from the point of the relief supplies, has conducted the thorough research on the two problems, one is the location problem of subway emergency stations, and another is to optimize the allocation of emergency relief supplies. The specific research process is as follows:Firstly, based on the definition and classification of the subway emergencies and combined with domestic and foreign subway emergency case, the paper makes a deeper analysis of the subway system emergencies, summarizes the potential hazards, disaster cause and influence scope of the four kinds of the subway emergencies, so as to summary the characteristics of the subway emergencies and to clear the process of the emergency rescue work, establishing the general principle for the follow-up study.Secondly, according to the specific requirements of the subway emergency relief supplies configuration, a model of emergency station location is established in this paper, which uses the generalized maximal covering location problem. The model of emergency station location considers the short-time traffic as the weight of the disaster area, and the level of coverage of the disaster area is determined by the response time. In a limited number of emergency stations, all the disaster areas are covered by the selected emergency stations, as well as the weights is maximized. Then the paper enumerates an example of using the particle swarm optimization(PSO) to solve.Finally, subway emergency relief supplies are divided into two stages, respectively is the static allocation and dynamic allocation. In the static configuration phase, the paper constructs the optimization model on the basis of the minimum requirement of subway emergency station, and then an example and the solution is given. In the dynamic configuration phase, the paper establishes a model, which goals are the earliest emergency start time and the minimum number of emergency stations.Through the study of allocation of emergency relief supplies to the subway emergencies, this paper can provide theoretical support for emergency work in the preliminary stage of development. The research results can not only enrich the perfect configuration mode of the emergency relief supplies in theory, but also help to improve the emergency rescue capability of the subway corporations in practice.