The two-stage integrated allocation model for local emergency supplies

In the aftermath of natural disasters, the timely delivery of emergency supplies to affected individuals is of paramount importance, with the distribution of local emergency supplies playing a critical role in emergency relief endeavors. Before rear rescue supplies become available, local emergency supplies are the primary focus of allocation. By considering factors such as supply quantity, transportation vehicles, rescue time constraints, minimum satisfaction rate, road disruptions, and maximum road capacity, a two-stage comprehensive allocation model is established for the distribution of local emergency supplies from multiple supply points to multiple demand points. This model comprises a first-stage centralized reserve and comprehensive allocation model for local emergency supplies, with the objective of minimizing time, as well as a second-stage decentralized reserve and comprehensive allocation model for local emergency supplies, with the objectives of fairness and minimizing losses. The principles and approaches for solving these models are presented. The research endeavors to expedite and ensure accurate rescue operations, effectively tackling the challenges associated with the "last mile" of post-disaster rescue efforts, while maximizing the protection of lives and property for the affected population.