Environmental restoration and flow analysis technique in a steep river including boulder and bridge pier
| Project/Area Number |
20560480
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Hydraulic engineering
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| Research Institution | Okayama University |
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Principal Investigator |
MAENO Shirou Okayama University, 大学院・環境学研究科, 教授 (20157150)
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| Research Collaborator |
KASE Eito 岡山大学, 大学院, 博士後期課程
KASEGUMA Kimiko 岡山大学, 大学院, 博士後期課程
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 巨石 / 急流河川 / アーマーコート / 環境修復 / 数値シミュレーション / 土砂還元 |
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| Research Abstract |
After dam construction, the flow and sediment regime change downstream from the dam. For example, the armor coat progresses because of sediment trapping by the dam. Therefore, I have proposed techniques that promote gravel sedimentation by improving riverbed forms. The effects of proposed techniques were investigated using a two-dimensional numerical model. Results showed that the proposed techniques are useful to reduce tractive force in steep rivers. They can create a desirable bed state for river ecosystems with various gravel sizes.
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Report
(4 results)
Research Products
(15 results)
