| Project/Area Number |
15K14029
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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 |
Geotechnical engineering
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
MAEDA KENICHI 名古屋工業大学, 工学(系)研究科(研究院), 教授 (50271648)
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| Research Collaborator |
IZUMI Norihiro
SAKAKIBARA Junichi
WOOD David, Muir
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 粒状体 / 局所化流れ / 限界流速 / パイピング / マイクロメカニクス / 浸透破壊 / すべり / 陥没 / 応力鎖 / 個別要素法 / 河川堤防 / ゆるみ / 進行性破壊 |
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| Outline of Final Research Achievements |
The relationships among the body-foundation ground properties in river levee, river water level, sand boiling dynamics, piping growth rate, and pore water pressure were investigated by model experiment and three-dimensional seepage analysis. The key parameters for occurrence and consequence conditions of piping was pointed out to be the distance between the slope toe and its dead-end, the inlet condition and the multiple layer in permeable base layer, the unevenness of inside-land, the sizes and locations of sand boiling holes where sand particles were erupted due to the velocity and pressure of the localized flow. The decrease in water velocity also was an important efficiency in traditional methods in leakage control works.
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