Evacuation Model and Application for Emergency Events

Under a unexpected disaster, The fundamental purpose of emergency evacuation is to take a scientific and effective evacuation strategy to maximize the population of the evacuation of the affected in the shortest time, and in which, the construction of evacuation routes and the distribution of evacuation intersection flow is the key of the realization of this purpose. In this paper, aiming at the problem of multi salvation points with priority, we study the issue of emergency evacuation from the perspective of mathematical analysis combining with interrelated algorithms of operations research and optimize network-flow-based analysis, and establish the emergency evacuation model in order to minimize the total evacuation time; also we bring forward the most short-circuit thinking based on discrete time , design the corresponding real-time dynamic algorithm to obtain the optimal solution of the target model , and establish the emergency evacuation decision-making system based on this model and the ArcGIS platform . This study has important practical significance for the prevention or reduction of accidents and emergency management, achieving fast, efficient and scientific decision-making and the protection of people´s lives and property. At the same time it offers the reference for competent authorities for the development of emergency contingency plans and emergency evacuation.