Evacuation of aged persons from inundated underground space

摘要

Underground is an important space that supports function of cities, such as subways, shoppingnmalls and basement parking. However in consequence a new type of disaster, the "urban flood"nmenaces these spaces. In the last decade, urban floods struck Tokyo, Nagoya and Fukuoka.nWhen underground inundation occurs, people must evacuate to the ground as soon as possible.nBut, when such an inundation situation happens, aged persons may not be able to evacuatenquickly to ground level. In this paper, the method of safety assessment for aged persons isndiscussed on the experimental results and flood simulation data in an underground space.nAs a criterion of the safety evacuation, the specific force per unit width is used in this study.nFrom the result of experiments, it is difficult to implement safety evacuation when the specificnforce per unit width is over 0.100m2 for the aged male.