研究課題/領域番号 |
19K14804
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研究種目 |
若手研究
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配分区分 | 基金 |
審査区分 |
小区分17030:地球人間圏科学関連
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研究機関 | 島根大学 |
研究代表者 |
戴 自立 島根大学, 学術研究院環境システム科学系, 特任助教 (30793319)
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研究期間 (年度) |
2019-04-01 – 2020-03-31
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研究課題ステータス |
中途終了 (2019年度)
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配分額 *注記 |
4,030千円 (直接経費: 3,100千円、間接経費: 930千円)
2022年度: 390千円 (直接経費: 300千円、間接経費: 90千円)
2021年度: 520千円 (直接経費: 400千円、間接経費: 120千円)
2020年度: 1,690千円 (直接経費: 1,300千円、間接経費: 390千円)
2019年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
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キーワード | Submarine landslide / Undersea cable / Impact force / Physical model test / Submarine landslides / Flow behavior |
研究開始時の研究の概要 |
In this research, a test apparatus and a numerical model will be developed to analyze the impact force of submarine landslides on undersea cables. A real submarine landslide occurred in Suruga Bay, Japan will be simulated, and the results are expected to provide some hints for undersea cable design.
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研究実績の概要 |
In this project, an experimental apparatus is designed to simulate the relative motion between the submarine landslide and undersea communication cable, and investigate the impact behavior of a submarine landslide. Based on the test data, the distributed load exerting on a cable under different velocity is analyzed. The results shows that 1) submarine landslide with larger particle size and larger thickness could generate larger impact force; 2) the evolution of the impact force with the velocity could be divided into three stages. It increased and reached a peak value at the first stage, and then decreased to a minimum value at the second stage. After that, it increased again when increasing the velocity continuously.
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