ESTIMATION OF SEDIMENTARY LAYER THICKNESS USING SUB BOTTOM PROFILER AND CHARACTERISTICES OF THE FLOW AND BED TOPOGRAPHY AT NARROW SEGMENT OF THE YOSHINO RIVER
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- MUTO Yasunori
- 徳島大学
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- OKADA Shoji
- 高知工業高等専門学校
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- Zhang Hao
- 高知大学
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- YOROZUYA Atsuhiro
- 国立研究開発法人 国立研究開発法人 土木研究所
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- KUDO Shun
- 国立研究開発法人 国立研究開発法人 土木研究所
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- HARAGUCHI Tsuyoshi
- 大阪市立大学
Bibliographic Information
- Other Title
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- 吉野川岩津狭窄部におけるサブボトムプロファイラーを用いた堆積砂層厚の面的把握と洪水時の流況・河床変動特性
Description
<p>In order to determine the maximum depth to be scoured during flooding at the narrow segment at the Iwadu point of the Yoshino River in Japan, we conducted a study to measure the thickness of the sediment layer using a narrow multi-beam and a sub-bottom profiler. The sub-bottom profiler detected a consolidated silt layer at a depth of approximately 10 m below the riverbed. Results from a boring survey conducted at three different points for verification, found that the N value changed sharply at this layer, where estimates indicated the deepest riverbed level historically recorded. In addition, it was nearly the same value with the calculated bed level during the largest discharge condition in the past by the quasi-three dimensional flow analysis.</p>
Journal
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- Advances in River Engineering
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Advances in River Engineering 23 (0), 299-304, 2017
Japan Society of Civil Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390854717501733632
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- ISSN
- 24366714
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Allowed