Mechanisms of long travelling Aratozawa Landslide on gentle sliding surface in consolidated silt
| Project/Area Number |
23658136
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
OKADA Yasuhiko 独立行政法人森林総合研究所, 水土保全研究領域, 主任研究員 (50360376)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 崩壊 / 地すべり / 土石流 / 崩壊・地すべり・土石流 |
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| Research Abstract |
Skeletal structure in soil from a sliding surface of Aratozawa Landslide was investigated to reveal the sliding mechanisms using Cryo-SEM. Many cylindrical and latticed grains were found in silt stone that formed the sliding surface of the landslide, while those were not found in the tufa that overlay the silt. Crushing of cylindrical and latticed grains was likely leading to pore-fluid pressure build-up resulting in the long travelling distance (300m) on the gentle slope (< 4 degrees) of the Aratozawa Landslide.
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Report
(3 results)
Research Products
(3 results)
