Research On The Impact Of Emotional Contagion On Personnel Evacuation In Poison Gas Leakage Scenarios

In recent years,there have been frequent incidents of poison gas leaks both domestically and internationally,resulting in significant casualties and property damage.It is an urgent problem to efficiently guide the rapid evacuation of densely populated areas during such emergencies and reduce the risk of mass panic.This study is based on a cellular automaton model and constructs an evacuation model considering emotional contagion in the context of poison gas leaks to explore the factors influencing emotional contagion and its impact on evacuation.Through a questionnaire survey,this study aims to understand the psychological and behavioral characteristics of evacuees in poison gas leak scenarios.Since the panic induced by poison gas can affect people’s judgment and decision-making,leading to abnormal evacuation behaviors,this study focuses on analyzing the psychological and behavioral features of evacuees to assist in selecting emotional parameters for the model.By introducing the SIS infectious disease model,the cellular automaton model is improved to simulate the process of emotional contagion(susceptible-infected-susceptible)during evacuations.This model takes into account both the harm caused by poison gas to individuals and the influence of emotional contagion on evacuation behavior,establishing a model for emotional contagion in evacuations during poison gas leaks.The constructed model is utilized to conduct simulation analyses on the internal factors of emotional contagion and external environmental factors affecting evacuations.The study quantifies the effects of internal factors such as panic threshold,emotional decay rate of individuals,and emotional decay rate at exits on emotional contagion and their impact on evacuations.The results indicate that increasing the panic threshold of evacuees effectively reduces the number of individuals infected by panic.Increasing the emotional decay rate of individuals helps reduce the average panic level.While increasing the decay rate of exit emotions also decreases the average level of panic emotions per person,its effect on shortening evacuation time,improving evacuation efficiency,and reducing the number of casualties is far inferior to that of the decay rate of individual emotions.There is a close relationship between the external environment and emotional contagion.The study examines external factors such as crowd density,location of the poison gas source,number of obstacles,and number of exits,and their impact on emotional contagion and personnel evacuation.The results demonstrate that as crowd density increases,the severity of emotional contagion within the crowd intensifies.The closer the poison gas source is to the downwind exit,the higher the number of individuals infected by panic emotions and the greater the number of casualties.A rational layout of obstacles helps reduce the average level of panic emotions per person.A single exit exhibits the highest average level of panic emotions,whereas increasing the number of exits effectively lowers the average level of panic emotions per person and enhances evacuation efficiency.Based on these research findings,corresponding recommendations are provided for emergency personnel evacuation.