Propagation behavior of submarine landslides and the impact force on undersea cables
Project/Area Number |
19K14804
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 17030:Human geosciences-related
|
Research Institution | Shimane University |
Principal Investigator |
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)
|
Project Period (FY) |
2019-04-01 – 2020-03-31
|
Project Status |
Discontinued (Fiscal Year 2019)
|
Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
Keywords | Submarine landslide / Undersea cable / Impact force / Physical model test / Submarine landslides / Flow behavior |
Outline of Research at the Start |
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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Outline of Annual Research Achievements |
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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Report
(1 results)
Research Products
(1 results)