Modeling And Simulation Research On Unitized Emergency Medical Aid Of Urban Seismic Disaster Based On GIS

The frenquency of earthquake has been gradually increasing in recent years, causing enormous casualties and property damage. After a catastrophic earthquake, one of the most important missions is medical aid. Saving or rescuing from the ruins of collapsed or dangerous houses and taking casualities to hospital in time are the most important tasks after the earthquake. At the same time, emergency rescue practice of urban seismic disaster shows that the prime time of the emergency medical aid for the serious wounded is within 6 hours after a catastrophic earthquake. Therefore, how to save more wounded in the shortest time with limited medical resources is a big problem. Also, using technology to model and simulate the process of the emergency medical aid is the key issue in the current research on the emergency medical aid.In this thesis, according to the characteristics of the urban emergency medical aid, the difficulties and focus of researches on emergency medical aid are generated. Given that saving is the most important task after the earthquake, the process of urban seismic disaster for emergency medical aid is further studied. Specifically, the following questions are discussed.(1) The problems of emergency medical aid in emergency management are studied on the basis of the characteristics of urban seismic disaster and the concept of emergency management unit for urban seismic disaster.(2) A theoretical model of medical resources demand for urban seismic disaster response is proposed according to the casualty-collection point coefficient and coverage area. The model gives full consideration to emergency medical team, equipment, supplies, local hospital, casualty-collection point, clinics in disaster area and so on. What's more, a case of medical resources demand model based on GIS is implemented and verified. The results show the model could be useful in practice and demand analysis of post-earthquake emergency medical resources for local area.(3) Dynamic assessment model of connectivity analysis of road system for urban post-earthquake is proposed, according to the number of the rescue forces arrived in stricken region, the repair coefficient, order and time of the road system. Meanwhile, a case of the model based on GIS is implemented and verified. According to the model, the emergency decision-makers can get the dynamic states of road system after the earthquake. Also, the optimal routes can be supplied dynamically for the rescuers to arrive at the area and to transfer the wounded and resources.(4) Combining prediction models of urban seismic disaster with the two proposed models of emergency medical aid, the simulated emergency medical aid system of urban seismic disaster based on GIS is developed and designed with the ArcGIS and VS2005 as developed platform and C # as developed language.