| Project/Area Number |
25289156
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Hydraulic engineering
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
Nihei Yasuo 東京理科大学, 理工学部, 教授 (60262268)
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| Co-Investigator(Kenkyū-buntansha) |
KIKUCHI Yoshiaki 東京理科大学, 理工学部土木工学科, 教授 (40371760)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2013: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
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| Keywords | 河川堤防 / 防潮堤 / 水害 / 洪水氾濫 / 津波 / 越流 / 減災 / 浸透 / GRS補強工法 / ジオテキスタイル / 地震 / 耐震性 / 決壊 |
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| Outline of Final Research Achievements |
Overflows from huge floods have caused levee breaches in a great number of places, including Japan. To prevent such destruction and thereby increase the resistance of armored levees to overflow erosion, in this study, we presented the performances of Geosynthetic-Reinforced Soil (GRS) levees and tsunami wall against overflow erosion under various conditions, such as reinforcement, back slopes, and geo-grid layers. In addition, we investigated the effect of geo-grid layers on the infiltration of levees. The model tests revealed that the GRS levee with partial and full reinforcements had a comparably high resistance against overflow erosion. The infiltration discharge of the GRS levee was lesser than that of the levee with no reinforcement due to the reduction in infiltration erosion in the GRS levee.
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