A field study on whole watershed management for flooding and inundation by geotechnical and hydraulic approaches
| Project/Area Number |
23310128
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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 |
Natural disaster science
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| Research Institution | Saga University |
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Principal Investigator |
OHGUSHI Koichiro 佐賀大学, 工学(系)研究科(研究院), 教授 (00185232)
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| Co-Investigator(Kenkyū-buntansha) |
KISHIHARA Nobuyoshi 佐賀大学, 大学院・工学系研究科客員, 研究員 (40003769)
HINO Takenori 佐賀大学, 低平地沿岸海域研究センター, 教授 (20295033)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2013: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2011: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
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| Keywords | 流域治水 / 野越 / 霞堤 / 氾濫 / 堆積 / 定方位板状地層採取 / 数値シミュレーション / 城原川 |
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| Research Abstract |
A traditional flood control technology in Saga Plain considering whole watershed countermeasures against floods has been evaluated quantitatively using geotechnical and hydraulic approaches to contribute to a future flood control management. In eastern Saga Plain, there is Jobaru River that includes discontinuous levees like Nokoshi and open levees. By geotechnical sampling of the soil, it has been found that sandy soils accumulate more at the location of auxiliary levee in the residential area near the discontinuous levee. By numerical simulations for inundation flows and sediment transports, there is a tendency of erosion near the auxiliary levee, while there is a tendency of accumulation in other areas. A soil sample of the location for the erosion area includes lens-like fine sand layer. Moreover, it has been found that large rivers' reroutings in Saga Plain are implemented to utilize it for warp soil dressing by water flow, water transportation, etc.
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Report
(4 results)
Research Products
(61 results)
