Abstract
After the earthquake, it is important to ensure the emergency supplies are provided in time. However, not only the timeliness, but also the fairness from different perspectives should be considered. Therefore, we use a multilevel location-routing problem (LPR) to study the fairness of distribution for emergency supplies after earthquake. By comprehensively considering the time window constraints, the partial road damage and dynamic recovery in emergency logistics network, the stochastic driving time of the vehicle, and the mixed load of a variety of emergency materials, we have developed a multiobjective model for the LRP in postearthquake multimodal and fair delivery of multivariety emergency supplies with a limited period. The goal of this model is to minimize the total time in delivering emergency supplies and to minimize the maximum waiting time for emergency supplies to reach demand points. A hybrid heuristic algorithm is designed to solve the model. The example shows that this algorithm has a high efficiency and can effectively realize the supply of emergency supplies after the earthquake within the specified period. This method might be particularly suitable for the emergency rescue scenarios where the victims of the earthquake are vulnerable to mood swings and the emergency supplies need to be fairly distributed.
Highlights
Earthquake is one of the most devastated natural disasters to human beings
By comprehensively considering the time window constraints, the partial road damage and dynamic recovery in emergency logistics network, the stochastic driving time of the vehicle, and the mixed load of a variety of emergency materials, we have developed a multiobjective model for the location-routing problem (LRP) in postearthquake multimodal and fair delivery of multivariety emergency supplies with a limited period
In order to save the lives of the people in disaster areas and minimize the losses caused by the earthquake, emergency supplies must be distributed to the rescue points in disaster areas as soon as possible after the earthquake, especially in the initial stage of rescue
Summary
Earthquakes usually affect a large area including the local infrastructure and a huge population. Various emergency supplies are needed and quantity is usually high. One of the common obstacles is the lack of supplies in the initial stage of the rescue. The demand of type and quantity of emergency supplies is various depending on the stage of rescue [1]. In order to save the lives of the people in disaster areas and minimize the losses caused by the earthquake, emergency supplies must be distributed to the rescue points in disaster areas as soon as possible after the earthquake, especially in the initial stage of rescue. Ensuring the supply of emergency materials is the key to effectively carry out the rescue work after the earthquake
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