Development of a practical method for river channel design using a quasi-3D flow simulation and stereo image analysis of aerial photographs
| Project/Area Number |
24560618
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | 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 Institute of Technology |
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Principal Investigator |
Ishikawa Tadaharu 東京工業大学, 大学院総合理工学研究科, 教授 (50159696)
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| Co-Investigator(Renkei-kenkyūsha) |
AKOH Ryosuke 岡山大学, 大学院環境生命科学研究科, 助教 (90599333)
NAKAMURA Takashi 東京工業大学, 大学院総合理工学研究科, 准教授 (40323315)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 河道計画 / 準三次元計算 / 洪水航空写真解析 / 分合流 / 高水敷粗度 / 洪水航空写真 / 準三次元水理計算 |
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| Outline of Final Research Achievements |
The design of the confluence is one of the most difficult aspects of the implementation of a compound channel which is widely adopted in rivers on alluvial plains. In this project, we proposed a practical method of flow analysis for the designing of confluence channels by combining the technique of stereo image analysis of the aerial photographs of flood flow and the quasi-3D shallow water simulation model with unstructured triangular mesh system. The drag force of the tree communities was also taken into consideration based on the results of a field survey.
The method was applied to the flood flow occurred in the confluence of the Tone River and Watarase River. The stereo image analysis showed the detailed surface flow characteristics. The quasi-3D flow simulation reproduced the surface flow successfully, and revealed the three dimensional flow characteristics under the water surface which are useful for the design of river confluence.
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Report
(5 results)
Research Products
(7 results)
