EXPERIMENTAL STUDY ON THE SEDIMENT MOTION WITH TWO-PARTICLES OF THE SAME SIZE AND DIFFERENT SPECIFIC GRAVITY
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- SEKINE Masato
- 早稲田大学理工学術院
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- HIEDA Asato
- 早稲田大学大学院 創造理工学研究科 建設工学専攻
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- HOASHI Takumi
- 早稲田大学大学院 創造理工学研究科 建設工学専攻
Bibliographic Information
- Other Title
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- 同粒径で比重の異なる二種類の粒子を用いた流砂の運動特性に関する実験的検討
Description
<p> Considering that all sediment originates from the riverbed, this study focuses on the concentration and velocity distributions of bed and suspended load to confirm the continuity of these distributions. Improvements in analytical techniques have made it possible to precisely track and count particles, and not only visualize vertical classification, but also directly calculate the volume of sediment from the concentration distribution. As a result, it was confirmed that suspended load and bed load have similar kinematic characteristics, moving at a high velocity in a downdraft, and the slight relationship of suspended load and bed load classifications was demonstrated once again. In addition, although the two particles were of the same size and no hiding occurred, a clear vertical classification was confirmed, and it became clear to what extent the sand feeding particles contribute to the exchange of the river bed. Furthermore, the experimental values of the concentration distribution and flow velocity allowed us to express the kinetic characteristics of the scouring particles on the riverbed surface in terms of the existence ratio of the particles.</p>
Journal
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- Japanese Journal of JSCE
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Japanese Journal of JSCE 80 (16), n/a-, 2024
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390017843874950912
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- ISSN
- 24366021
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed