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Abstract
Large-scale crowd evacuation is an important measure guaranteeing the safety of disaster-stricken victims in typhoon relief activities. Decision-making related to antityphoon crowd evacuation must take full consideration of the destructive effect of typhoons and their secondary disasters, time urgency, and resource limitation. To give full play to limited vehicle resources, the influence of a typhoon and its secondary disasters on antityphoon evacuation are mainly manifested during the execution of evacuation tasks in this article. The shortest time spent in completing all evacuation tasks was taken as the objective. Then, a vehicle route selection model for two-phase large-scale antityphoon crowd evacuation was built under an uncertain environment, and a matrix encoding–based genetic algorithm was designed to solve the model. Under the background of Super Typhoon Meranti in 2016, the model and algorithm were applied to crowd evacuation in a typhoon in Xiamen for a simulated analysis. Results indicate that in typhoon relief activities, emergency decision makers can use the proposed method to acquire a scientific and reasonable route selection scheme for antityphoon crowd evacuation according to related typhoon disaster data.
Highlights
Typhoon disasters are one of the most serious natural disasters affecting human life
To maximize limited vehicle resources within a limited time period, road impedance coefficient was introduced in this article to embody the influences of typhoons and their secondary disasters on evacuation tasks
E vehicle road impedance coefficient was used to embody the abilities of different vehicles in executing evacuation tasks
Summary
Typhoon disasters are one of the most serious natural disasters affecting human life. Research has shown that typhoons bring about direct disasters such as gales, rainstorms, and storm tides. Typhoons give rise to derivative disasters such as torrential floods, landslides, debris flows, and waterlogging, thereby causing major loss of life, personal injuries, and property losses in the disaster chain [1]. Strong destructive force, and broad scope of influence, a super typhoon seriously threatens public safety while bringing about major economic loss in coastal regions. Long-term practices indicate that effective crowd evacuation is an important measure used to cope with super typhoon disasters and guarantee people’s safety. Large-scale antityphoon emergent crowd transfer decision-making is still faced with numerous uncertain factors during emergencies
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