書誌事項
- タイトル別名
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- Simulation of Debris Flow Flooding in the Mizunashi River at Mt. Unzen
- ウンゼン ミズナシガワ ニ オケル ドセキリュウ ノ ハンラン シミュレーション
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In active volcanic areas, debris flow generally has higher fluidity than in ordinary areas, resulting in a wider extent of inundation. In such areas, an estimation of the hazard zone is required to prevent and mitigate the disasters due to debris flow. Therefore, many study on the two-dimensional simulation of debris flow have been done to estimate the flooding area. Reliability of the simulation mainly depends on the accuracy of the boundary conditions and the for-mula for sediment discharge.<br>In this study, the boundary conditions at the upstream end of the simulation domain are set up from the estimated hydrograph of debris flow by using the runoff analysis model. Many studies on discharge of hyper-concentrated flow have been made, but, no reliable equation has been established yet. Existing formulae for sediment discharge of hyperconcentrated flow are examined by using the field data collected at the Mizunashi River. Simulations of debris flow flooding are made by using the chosen formula and the boundary conditions mentioned above. Reliability of the simu-lation is checked by applying it to the Mizunashi River at Unzen Volcano and the Fume River at Aso Volcano.
収録刊行物
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- 砂防学会誌
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砂防学会誌 52 (5), 24-29, 2000
Japan Society of Erosion Control Engineering
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詳細情報 詳細情報について
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- CRID
- 1390282679043616512
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- NII論文ID
- 10005421890
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- NII書誌ID
- AN0012035X
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- NDL書誌ID
- 4960728
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- ISSN
- 02868385
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可