水工学論文集
Online ISSN : 1884-9172
Print ISSN : 0916-7374
ISSN-L : 0916-7374
東海豪雨による新川破堤氾濫の数値解析
清宮 洋片田 敏孝真野 明
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ジャーナル フリー

2003 年 47 巻 p. 925-930

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The mathematical model which can simulate inundation process in the urban areas due to heavy rain has been developed. The problems of model are to devise the configuration of the grid and to consider buildings, sewage system, streams etc. In this study, the numerical simulation was conducted to reconstruct the Shin-river breach caused by Tokai heavy rain in September 2000. This model employed the ground elevation as the initial condition and the overflow discharge at breach point as the boundary condition. Governing equations are 2-D continuity and momentum equations to simulate urban overland inundation. The result of the numerical simulation was represented by GIS and compared with the field data obtained by the questionnaire. These results indicate the accuracy of this inundation simulation and are helpful in flood management in the future.

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