Numerical Simulation Of Fire And Evacuation Of Personnel In A Large Supermarket

Nowadays,people's pursuit of material and cultural level is getting higher and higher.In the cities,towns and large shopping supermarket everywhere,and the goods are complete,diverse,convenient procurement.Side confirms the impact of large supermarket shopping on people's daily lives and the role is growing.However,in order to meet the needs of people's lives,there are more or less flammable combustible goods in these supermarkets,from a certain point of view,these dangerous goods is a security risk.As a result,the unreasonable design of emergency evacuation channel of the supermarket,the lack of fire prevention design and the improper command of the scene will make the loss of supermarket fire further expand.This article mainly aims at the large-scale supermarket,searches through the recent years the national supermarket fire accident report,analyzes the fire process and the personnel evacuation effect,provides the realistic basis for the thesis writing.The simulation study was carried out according to the Huainan municipal fire fire system,Suguo supermarket entrance design,the internal structure and the distribution of specific personnel.Based on the normal operation of sprinkler system and mechanical smoke exhaust system,the numerical simulation software(FDS)is used as a tool to participate in the simulation.The curves of smoke height and indoor temperature with time were obtained,and the simulation results of three different fire sources were compared.At the same time,FDS+EVAC is used to establish the evacuation model based on the three smoke model of the fire scene.According to the results of field investigation,the distribution of personnel in the supermarket when the load is reached is calculated and analyzed.And according to the movement ability of all kinds of people in our country to determine the average escape speed.Finally,the results of the model are obtained,and the time required to escape from the danger is obtained by analyzing the total number of changes in the total number of exits with time.Combined with the simulation results of flue gas to determine whether the personnel in the escape process is affected by the smoke and temperature,through a comprehensive analysis of the safety of the supermarket,and put forward the corresponding recommendations.At the end of this thesis summarizes the evacuation simulation of fire smoke simulation and China Resources Suguo supermarket workers,and puts forward some suggestions.It can provide some theoretical guidance for improving the fire evacuation performance of building fires in the future.