2010 Fiscal Year Final Research Report
Initiation and motion mechanisms of submarine landslide and its impact on pipelines
| Project/Area Number |
20310109
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Natural disaster science
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| Research Institution | Kyoto University |
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Principal Investigator |
WANG Fawu Kyoto University, 総合理工学部, 准教授 (10324097)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAJIMA Masakatsu 金沢大学, 理工研究域, 教授 (70143881)
SAKAI Tetsuya 島根大学, 総合理工学部, 准教授 (90303809)
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| Project Period (FY) |
2008 – 2010
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| Keywords | ライフライン防災 / 海底地すべり / 自然災害 |
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| Research Abstract |
When triggered by earthquake, submarine landslide may occur at submarine slope and move for long distance at high velocity. When the submarine landslide travelled crossing an area with communication cables, the cables will be cut and cause communication trouble to the society. A simulating apparatus for submarine landslide was developed for the purpose to study the motion mechanism of submarine landslide and its impact on cables. It is found that during submarine landslide motion, the sliding mass can be divided to three layers, i.e., turbulent flow, debris flow, and water at the bottom, so that the landslide can move with very low friction to reach long distance with high velocity. In addition, the influence of cable size and motion velocity on the impact to cable was also measured.
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