Author(s): Makoto Takeda; Yutaka Morita; Naoki Matsuo
Linked Author(s): Naoki Matsuo
Keywords: Inundation; Urban Area; Sewer System; Numerical Analysis
Abstract: Recently, the serious hazard due to heavy rain occurs frequently. Especially, lower region of urban area where many people live receives flood disaster and the damage is very serious. In urban area, the flow and distribution of inundation water are affected by various urban structures. Therefore, for the establishment of measures for the flood disaster in urban area, the influence of urban facilities on inundation water behavior must be considered. In this study, the detailed inundation analysis including sewer system in urban area is developed and the validity of this analysis model is discussed by comparison between simulation results and observed data in Tokai heavy rain in 2000. Moreover, applications of the presented analysis model to measures for flood disaster are examined. This study treats four examinations, effect of sewer system, overflow weir of storm water, inflow situation into manhole on inundation situation and distribution of backflow sewer water from manhole. From these analysis results, the effective information of measures for flood disaster and the various applications of inundation analysis are shown. Especially, the applications for not only dynamical problem of inundation water but also sanitary one are discussed by the treatment of filthy water in flooding.
Year: 2007