2022 Fiscal Year Final Research Report
Performance of embankment deteriorated by repeated seepage flow against earthquake/flooding
| Project/Area Number |
19H02232
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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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| Review Section |
Basic Section 22030:Geotechnical engineering-related
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
堀越 一輝 東京工業大学, 環境・社会理工学院, 助教 (90771965)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 繰返し浸透 / 内部浸食 / 土構造物 / 耐災性 |
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| Outline of Final Research Achievements |
Earthen structures subjected to repeated seepage flow, such as levees or dams, are often deteriorated by internal erosion. In this study, by focusing on suffusion, i.e., one of the modes of internal erosion, the process of deterioration of soils due to the migration of fine particles is identified and the vulnerability of the erosion-deteriorated earthen structures against earthquakes/floods is demonstrated through physical model tests and numerical simulations.
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| Free Research Field |
地盤工学
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| Academic Significance and Societal Importance of the Research Achievements |
常に水の浸透流に曝されている土構造物は内部浸食により劣化していると考えられる．本研究の成果は，そのような土構造物の内，地震や豪雨・洪水に対する耐災性低下が懸念されるものの洗い出しや，土構造物の健康寿命の推定に資するものであることから，社会資本の全体最適化に向けた社会資本ストックのマネジメント高度化の一助となることが期待される．
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