In recent years, disasters have caused extensive water damage in various parts of Japan. Flooded evacuation routes and ineffective hazard maps commonly constrain evacuees’ behavior, which results in casualties. In this study, storm surge flooding analysis was carried out using OpenFOAM, which is a computational fluid dynamics software that monitors flooding state as a function of time, and evacuation simulations using a multi-agent system that considers evacuation behavior knowing the flooding state established by the flooding analysis. In some of the scenarios, many residents were caught in the flooding and could not be evacuated. Additional evacuation simulations revealed that evacuation behavior is more effective if residents have advance knowledge of the area expected to flood. Identifying these flood hazard areas and recognizing these areas in advance as impassable enables evacuees to avoid flood hazard areas; consequently, there is a decrease in the number of evacuees who get caught in the flooding. Anticipating the area expected to be flooded suggests the best evacuation locations and routes. Using these simulation results with useful hazard maps and disaster education, residents will correctly recognize the risk of a storm surge disaster and prepare for it, which will assist recovery. Finally, our analytical and simulation approach to disaster management is amenable to long-term planning for disaster-resistant cities.

近年来，灾害在日本各地造成了广泛的水灾。被洪水淹没的疏散路线和无效的危险地图通常会限制疏散人员的行为，从而导致人员伤亡。在本研究中，风暴潮洪水分析是使用 OpenFOAM 进行的，OpenFOAM 是一种计算流体动力学软件，可监控洪水状态随时间的变化，并使用多代理系统进行疏散模拟，该系统考虑疏散行为，了解洪水状态由洪水分析。在某些情况下，许多居民被洪水淹没，无法疏散。额外的疏散模拟表明，如果居民提前了解预计会发生洪水的区域，疏散行为会更有效。识别这些洪水危险区域并提前将这些区域识别为不可通行的区域，使撤离人员能够避开洪水危险区域；因此，被洪水淹没的撤离者人数减少了。预测预计会被洪水淹没的区域会建议最好的疏散地点和路线。将这些模拟结果与有用的灾害地图和灾害教育结合使用，居民将正确识别风暴潮灾害的风险并做好准备，这将有助于恢复。最后，我们的灾害管理分析和模拟方法适用于抗灾城市的长期规划。预测预计会被洪水淹没的区域会建议最好的疏散地点和路线。将这些模拟结果与有用的灾害地图和灾害教育结合使用，居民将正确识别风暴潮灾害的风险并做好准备，这将有助于恢复。最后，我们的灾害管理分析和模拟方法适用于抗灾城市的长期规划。预测预计会被洪水淹没的区域会建议最好的疏散地点和路线。将这些模拟结果与有用的灾害地图和灾害教育结合使用，居民将正确识别风暴潮灾害的风险并做好准备，这将有助于恢复。最后，我们的灾害管理分析和模拟方法适用于抗灾城市的长期规划。