Two-stage multi-objective emergency evacuation and rescue strategy under earthquake disasters
In order to systematize emergency shelter and rescue activities,continuously improve the rescue functions of emergency shelters,and enhance the efficiency of post-disaster material supplies,a multi-criteria decision-making method was used to evaluate the quality of emergency shelter services,taking earthquake disasters as a realistic background and considering both pre-disaster preparation and post-disaster response stages.A two-stage decision-making model was constructed with the objectives of minimizing the expected value of total rescue cost,total evacuee evacuation distance and total material transportation distance,and maximizing the emergency shelter service quality and the total material demand satisfaction rate.The effectiveness of the two-stage decision-making model was validated using the 2013 Ya'an earthquake as a background,and the pre-selection of emergency shelter locations and local mass storage sites,and the emergency material pre-storage work were completed.The locations of different types of emergency shelters were determined,and post-disaster and emergency materials were dynamically allocated to demand points.The research results show that pre-disaster allocation of emergency shelter resources lays the foundation for post-disaster shelter and rescue activities,accelerating the response speed after the disaster,improving the quality of work,and reflecting the importance attached to the rescue of sheltered persons,playing a crucial role in ensuring the safety of disaster-affected populations.
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