パイプ流存在下での斜面の安定性に関する数値実験

• 堤 大三

  京都大学防災研究所水災害研究部門

• SIDLE Roy C.

• 藤田 正治

  京都大学防災研究所水災害研究部門

• 水山 高久

  京都大学農学研究科森林科学専攻

書誌事項

タイトル別名

• NUMERICAL EXPERIMENTS TO ASSESS THE INFLUENCE OF PIPEFLOW ON SLOPE STABILITY

抄録

Pipeflow is recognized as an important hydrologic control as well as a landslide initiation factor, and the development of a theoretical method to analyze pipeflow process is needed. However, there are few modeling studies of pipeflow, and a general simulation technique for water dynamics in the hillslope scale with soil pipes has not yet been developed. In this study, a general model that describes lateral pipeflow in a hillslope was developed. In the model, matrix flow and pipeflow were calculated by their respective governing equations (Richards' equation and Manning's equation), considering the interaction between t hese two flow systems. Numerical experiments were conducted to analyze the effect of pipeflowon slope stability. Results indicated that pipe clogging decreases the factor of safety and couldbe a factor that triggers landslides, and that pipeflow affects the initiation of debris flow after landslides.

収録刊行物

• 水工学論文集

  水工学論文集 48 337-342, 2004

  公益社団法人 土木学会

キーワード

• pipeflow
• slope stability
• Richards' equation
• Manning's equation
• pipe clogging
• debris flow

詳細情報

• CRID: 1390282680147524096
• NII論文ID: 130004043615
• DOI: 10.2208/prohe.48.337
• ISSN: 18849172
• ISSN: 09167374
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可