Propagation behavior of submarine landslides and the impact force on undersea cables

海底滑坡的传播行为及对海底电缆的冲击力

• 批准号: 19K14804
• 负责人: 戴 自立
• 金额: $ 2.58万
• 依托单位: Shimane University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2019
• 资助国家: 日本
• 起止时间: 2019-04-01 至 2020-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-19K14804/
• 关键词: Submarine landslide; Undersea cable; Impact force; Physical model test; Submarine landslides; Flow behavior

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.

本计画设计一套实验装置，模拟海底滑坡与海底通讯电缆之间的相对运动，探讨海底滑坡的撞击行为。根据试验数据，分析了斜拉索在不同速度下的分布荷载。结果表明：1）粒径较大、厚度较大的海底滑坡能产生较大的冲击力; 2）冲击力随速度的演化可分为3个阶段。在第一阶段，它增加并达到一个峰值，然后在第二阶段下降到一个最小值。然后，随着速度的不断提升，再次提升。

项目成果

Experimental study on impact behavior of submarine landslides on undersea communication cables

• DOI: 10.1016/j.oceaneng.2017.11.050
• 发表时间: 2018-01
• 期刊: Ocean Engineering
• 影响因子: 5
• 作者: Fawu Wang;Zili Dai;Y. Nakahara;Tomokazu Sonoyama