Research On The Robust Optimization Of Dispatching Emergency Supplies Responding To Natural Disasters

Dispatching emergency supplies is one of the most important parts of emergencymanagement. A country or region when major natural disasters or sudden public eventsoccur, can rapidly and efficiently collecting and dispatching emergency supplies to thespecified disaster location is very important to effectively relieve disaster. But foremergency supplies transportation, one of the biggest characteristic is its high degree ofuncertainty, we can’t accurately estimate the number of emergency supplies in advance. Ifthe supply cannot satisfy the demand of emergency supplies as causing to enormousdemand fluctuations, a country or region is likely to experience again “secondary disaster”after the incident, namely after the occurrence of unexpected events, emergency suppliescannot be distributed to the victims timely, leading to social unrest.Therefore, constructing the model for robust optimization of dispatching emergencysupplies responding to natural disasters, help logistics-type emergency mobilization centerquickly response and secure the surge of emergency supplies demand in incidents; Toconsider factors such as the uncertainty of the emergency supplies demand, can help toenhance the rational allocation of emergency supplies; Provide reasonable suggestions toimprove the emergency logistics system, reduce the negative impact of emergencies.This article based on actuality and proposed that the dispatching emergency suppliesmodel should satisfy the demand and also economically viable. At the same time, consideremergency demand uncertainty and logistics-type emergency mobilization center key nodes,on this basis to build dispatching emergency supplies model.Aiming at the above problems, the framework of this paper is as follows:(1) This paper defines the connotation of robust and summarizes the differencesbetween robustness and stability, robustness and vulnerability based on the domestic andforeign literature. It also analyzes the characteristics of emergency supplies dispatchingrobustness. At the same time, conclude the robust optimization method to solve the model.(2) Under the reasonable assumptions, put the uncertainty of emergency suppliesdemand and logistics-type emergency mobilization center key nodes into the model, inorder to build a multi-objective robust optimization model of dispatching emergency supplywith the total transportation time, total cost, and the total transportation vehicles minimumas the target. (3) The numerical validation and the result analysis of the model. To check the validityof MODE model by using relevant data of Wenchuan earthquake, demonstrate theeffectiveness of the proposed model. And make comparison of the optimal value of thethree sub-targets with the robust optimization method under different disturbancecoefficient and control parameters of dispatching emergency supplies demand, to analyzeits comparison respectively.(4) Put forward the recommendations to improve the efficiency of dispatchingemergency supplies. According to the obtained results of the model of dispatchingemergency supplies (MDES model), from the point of view of stressing the important roleof logistics-type emergency mobilization center, cooperating with the third party logistics,emergency information platform construction, propose relevant policies and suggestions toimprove dispatching emergency supplies efficiency.