| Summary: | 碩士 === 國立宜蘭大學 === 土木工程學系碩士班 === 106 === This study mainly simulates and analyzes the phenomenon of water transport caused by flood flow invade the underground transportation system. Taiwan urban areas lack of ground space, so the development of underground space is very mature, such as MRT, railway and underground mall. Urban underground space co-construction and interconnection bring convenience to the residents, but it also relatively vulnerable to floods, because of the underground space is below the horizon. Once the underground transport system is flooded, the rapid expansion of flooding will result from the interconnection of underground space, not only expand the urban flood disaster, but also cause a lot of disaster losses. In this study, a dual finite volume method (DFVM) developed based on one-dimensional shallow water equation was used to simulate the flow pattern of the underground transport network system after flood intrusion. This model is used to simulate the phenomenon of flooding invasion in Taipei Metro system, and the information such as water level, discharge, and wet-dry fronts can use as the reference for flood disaster prevention design.
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