Formation and developing processes of debris flow resulting from slope failures
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- EGASHIRA Shinji
- International Centre for Water Hazard and Risk Management, PWRI
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- MIYAMOTO Kuniaki
- Faculty of Life and Environmental Science, University of Tsukuba
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- TAKEBAYASHI Hiroshi
- Disaster Prevention Research Institute, Kyoto University
Bibliographic Information
- Other Title
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- 崩壊に伴う土石流・泥流の形成と規模の決定機構
- ホウカイ ニ トモナウ ドセキリュウ ・ デイリュウ ノ ケイセイ ト キボ ノ ケッテイ キコウ
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Description
<p>Present study describes formation and developing processes of debris flow resulting from landslides and slope failures, supposing that a soil block released by slope failure is saturated by water. Stability and mobility analyses of the soil block such as an equilibrium bed slope suggest that the soil block is fluidized resulting into debris flow, and that the resulted debris flow is able to reach a milder area than expected for the debris flow composed only of coarse sediment, supposing that a phase sifting takes place from solid phase to liquid one for the fine material composed of the soil block. In addition, the results show that the debris flow size such as a peak flow discharge is determined mainly by sediment erosion along the torrent bed except in the sediment depositional region. Such results provide a key for designing sediment control facilities, which is very different from a conventional method.</p>
Journal
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- Journal of the Japan Society of Erosion Control Engineering
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Journal of the Japan Society of Erosion Control Engineering 68 (5), 38-42, 2016
Japan Society of Erosion Control Engineering
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Keywords
Details 詳細情報について
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- CRID
- 1390282680459049728
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- NII Article ID
- 130005464879
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- NII Book ID
- AN0012035X
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- ISSN
- 21874654
- 02868385
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- NDL BIB ID
- 027080382
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- Crossref
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- Abstract License Flag
- Disallowed