INUNDATION ANALYSIS OF COMPLICATED UNDERGROUND SPACE

A mathematical model called'storage pond model' is developed for inundation analysis in underground space. In this model, underground mall and subway are treated by the combination of multiple storage pond, and the water volume exchange between adjacent ponds is computed by discharge formula or momentum equation. This model was applied to Umeda underground mall and adjacent subway spaces. The results show that the location and elevation of subway station and the volume of subway space have major influence on the inundation behavior in underground mall.