Search

Flood evacuation models can provide an effective mechanism to analyse flood risks andevacuation response actions. In this study, practical applications of evacuationsimulation models are presented to help examine flood-related evacuation scenarios.Simulation frameworks are demonstrated through the case studies of Brisbane City,Queensland, Australia, which has a long history of floods and has experienced majorflooding events in 2011 and 2013. These case studies were investigated to demonstratefeasible applications of flood extent prediction, network bottleneck estimation, evacuees’behaviour and shelter demand, which contribute to flood risk mitigation and evacuationplanning. The proposed flood evacuation models are proven to help increase communityresilience in at-risk areas in Brisbane.Effective flood emergency management needs an integrated operation of interactingwith human and technological systems. In this study, firstly, spatial toolkits areemployed to analyse the shelter assignment and routing strategies based on networkcalculations. Simulation results indicate that the nearest shelters and routing directionscan be determined based on the unique location of each household. To analyse thetemporal flood risks and identify dangerous areas, an inundation model is proposed toprovide flooding information for a dynamic risk analysis study. Test results of theinundation model show that it is able to predict the flood inundation extent at anaccuracy of 66.9% which is higher than or comparable with the existing studies.A large-scale inundation can affect the endangered areas progressively and the temporalaspect of the incident should be captured in evacuation planning. By integrating thesimulated flood dynamics, a city-scale microscopic evacuation model is built through anagent-based approach; different flood stages associated with departure times and variousbehaviour rules are tested for the Brisbane evacuation scenarios. The inclusion of flooddynamics in the evacuatio