Study On Safety Evacuation Model Of Large Supermarket In Fire

People in fire can safely evacuate whether or not which is closely related to life safety,How to effectively prevent and reduce casualties caused by fire,which has become the hot area of public safety research.Large-scale supermarket gathers a lot of people and materials,once in fire,there will be many casualties and large economic losses.This paper studies the evacuation of large-scale supermarket.People can safely evacuate which depends on the required safety egress time of people less than the available required safety egress time of building. The article first analyzes the research status and methods of evacuation model in domestic and foreign,then poses the research content and the paper's technology roadmap.The required safety egress time of people is generally determined by setting up evacuation model. To set up evacuation model, First of all, understanding the basic theoretical knowledge of evacuation and the existing model,then analyzing factors impact on the safety evacuation, this paper makes a detailed analysis on the two contents. Basing on the theoretical analysis the paper sets up the evacuation model of large-scale supermarket,determines the moving route of people,force,people characteristics and speed.The available required safety egress time of large-scale supermarket is calculated by fire simulation software. In this paper, the software selected for the fire simulation is FDS, which through a rational setting of the fire scene and fire growth model to simulate fire and smoke development and the process of spread,get the time of dangerous status.Finally the paper makes a evacuation and fire simulation of a supermarket in huainan according to the evacuation model and the FDS software,demonstrates the significance of studying evacuation model.