2012 Fiscal Year Final Research Report
The monitoring of the deformation of the slope and the time prediction Based on the stress-dilatancy of the soil
| Project/Area Number |
23658130
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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 | Kochi University |
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Principal Investigator |
SASAHARA Katsuo 高知大学, 教育研究部自然科学系, 教授 (90391622)
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| Co-Investigator(Kenkyū-buntansha) |
SAKAI Naoki 独立行政法人防災科学技術研究所, 観測・予測研究領域, 主任研究員 (40414990)
ITOH Kazuya 独立行政法人労働安全衛生総合研究所, 建設安全研究グループ, 主任研究員 (80371095)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 斜面崩壊 / モニタリング / せん断ひずみ / ダイレイタンシー |
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| Research Abstract |
The measurement of the deformation of the sandy model slope under artificial rainfall or cutting were conducted to examine whether the strain increment ratio (=compression strain increment/shear strain increment ratio) can shows the stress state in the slope before the failure. In the experiment with artificial rainfall, the compression strain increment at the bottom of the slope decreased with the increase of the shear strain and then became zero just before the failure of the slope. This fact shows the strain increment ratio can be a indicator of the instability of the slope.
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