火山流域における土砂堆積の評価のための2次元泥流モデルの開発

• 宮沢 直季

  砂防学会 山梨大学大学院医学工学総合研究部

• 砂田 憲吾

  砂防学会 山梨大学大学院医学工学総合研究部

• 大石 哲

  砂防学会 山梨大学大学院医学工学総合研究部

書誌事項

タイトル別名

• Development of 2D numerical model of mudflows for estimation of sediment deposition in volcanic basins
• カザン リュウイキ ニ オケル ドシャ タイセキ ノ ヒョウカ ノ タメ ノ 2ジゲン デイリュウ モデル ノ カイハツ

抄録

2D numerical model of mudflows has been developed considering the estimation of sediment deposition in volcanic basins. Equations of erosion/deposition rate of suspended sediment were used in the 2D numerical mudflow model developed by Miyazawa et al. (2002). The previous mudflow model is improved in the present study by using the equations of erosion/deposition rate applicable to mudflow, which were determined empirically by laboratory tests from Hirano et al. (1997), Egashira et al. (1993) and Winterwerp et al. (1990). The erosion/deposition rates are related with the hindered settling velocity. The revised model was applied to compute the bed elevation variations inside Mega-Dike system in the lower Pasig-Potorero River basin near the Mt. Pinatubo, Philippines. It is found that the simulated bed variations are in reasonable agreement with the measurements. Using the model, the deposition areas of sediment to the several scale flood determined virtually are calculated numerically and estimated in the Pasig-Potrero River basin.

収録刊行物

• 砂防学会誌

  砂防学会誌 59 (5), 23-34, 2007

  Japan Society of Erosion Control Engineering

キーワード

• mudflow
• 2D numerical model
• volcanic basin
• Pasig-Potrero River basin
• hindered settling

詳細情報

• CRID: 1390282679043344128
• NII論文ID: 130004296360
• NII論文ID: 10018486775
• NII書誌ID: AN0012035X
• DOI: 10.11475/sabo1973.59.5_23
• NDL書誌ID: 8667638
• ISSN: 02868385
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8667638
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
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