Detailed Simulation of People's Response to Flood Disasters based on Digital Street Network Model

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In order to enhance the utility and applicability of micro flood evacuation model, which simulates individual or family actions under flood emergency, a digital street network model and an interaction model among people and obstacles have been developed. The digital network model uses digital map data commercially available and expresses the field for evacuation on a computer. The interaction model simulates the process in which walking speed varies with congestion situation as well as with inundation depth. The developed models enable to perform flood evacuation simulation in any place in Japan without heavy load to handle complex data set and then will be of help to design emergency plan to flood disasters.