行政院國家科學委員會補助專題研究計畫成果報告:防洪示範區淹水境況模擬與決策支援系統之研究(二)─子計畫：基隆河流域整治段颱洪災害淹水境況模擬(二)
Date Issued
2002
Date
2002
Author(s)
DOI
902625Z002011
Abstract
The main objective of this three-year project is to simulate the interaction between flooding and inundation of Shiji-Wudo area where is under the short-term project of channel improvement for 10-year flood protection level and the long-term project of flow divergence at Yuanshanzi, managed by Ministry of Economic Affairs. A two-dimensional flooding inundation model associated with dynamic interaction between channel flow in rivers and overland flow in floodplains are developed in the project. A two-dimensional inundation model based on the zero-inertia concept for computation of inundation zones and depths is used to simulate overland flow in floodplains, whereas a one-dimensional river routing model is adopted for channel flow using nonlinear finite difference method. The dynamic interaction between Keelung River and its adjacent floodplains is computed by using the weir or orifice formula, according to the difference between river stage and inland water stage. The effectiveness of the short-term as well as long-term projects is evaluated in the second and third year of this three-year project, respectively. Typhoon Zen and Babs in 1998, and Typhoon Xiansan in 2000 are used for model verification. The results of inundation scenario simulation can be used for flood mitigation measure and decision support system for government agencies.
Subjects
Inundation Scenario Simulation
Overbank Flooding
Floodplain
Inundation Zone
Publisher
臺北市：國立臺灣大學生物環境系統工程學系暨研究所
Type
report
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902625Z002011.pdf
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Format
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