2013 Fiscal Year Final Research Report
Efficient maintenance technology with a reliable evaluation of earth structure deterioration
| Project/Area Number |
22360183
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KUWANO Reiko 東京大学, 生産技術研究所, 教授 (80312974)
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| Co-Investigator(Kenkyū-buntansha) |
SAITO Yukiko 独立行政法人土木研究所, 主任研究員 (50414991)
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| Co-Investigator(Renkei-kenkyūsha) |
KOSEKI Junnichi 東京大学, 生産技術研究所, 教授 (30272511)
KUWANO Jiro 埼玉大学, 理工学研究科, 教授 (30178149)
TACHIBANA Shinya 埼玉大学, 理工学研究科, 助教 (90432567)
MORI Hirotoshi 独立行政法人土木研究所, 主任研究員 (20355803)
MATSUMIYA Yosuke 国土技術政策総合研究所 (90442904)
KIKUCHI Yoshiaki 独立行政法人港湾空港技術研究所, 部長 (40371760)
KUNO Haruhiko (財)電力中央研究所, 上席研究員 (50371399)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 地盤 / 内部侵食 / 水みち / 浸透 |
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| Research Abstract |
The main objective of the study is to investigate the mechanism of formation and extension of internal erosion and water pathway in the backfill of earth structure by water penetration due to repeated rainfall. In order to evaluate effects of soil grains escaping from the specimen, a special permeability test was conducted. When hydraulic gradient exceeded certain value, fine particles started to flow out of the specimen. Turbidity of the drained water can indicate the degree of currently progressing internal erosion. Even small degree of internal erosion caused significant decrease in penetration resistance.
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