快速沉积作用对海底滑坡的贡献机制及影响因素研究

doi:10.13722/j.cnki.jrme.2022.0679

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Abstract Many submarine landslides are associated with rapid sedimentation. However，relevant research on the contribution of rapid sedimentation to submarine landslides and its influencing factors wer he character of submarine landslides associated with rapid sedimentation was firstly summarized by analyzing relevant cases. Subsequently，the mechanism of submarine landslides triggered by rapid sedimentation was clarified and the corresponding implementation method based on ABAQUS was provided. Finally，the influencing factors of submarine slope instability caused by rapid sedimentation were discussed systematically. The results show that the generation of excessive pore pressure caused by rapid sedimentation will make the effective stress and strength of sediment grow slowly and even decrease. A low gravitational field formed by rapid sedimentation makes submarine slope easier to failure when it suffers from some geological processes like earthquake，hydrate dissociation and diaper. In addition，a short-period shallow slide is more likely to occur when the submarine slope is with a steep gradient，sediment with high compressibility and a depositional environment with high sedimentation rate. It is noted that sediment with high compressibility will also lead to a under-consolidated stratum even if the sedimentation rate is low，which is unfavorable for stability of submarine slopes.

Key words： marine geological disaster submarine landslides rapid sedimentation landslides character slope stability excessive pore pressure

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	Articles by authors
	LI Zhenghui1
	YANG Ying2
	ZHU Chaoqi1
	3
	JIA Yonggang1
	3
	KOU Hailei2

Cite this article:

LI Zhenghui1,YANG Ying2,ZHU Chaoqi1, et al. Contribution of rapid sedimentation to submarine landslides and #br# its influencing factors[J]. , 2023, 42(5): 1225-1236.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0679 OR http://rockmech.whrsm.ac.cn/EN/Y2023/V42/I5/1225

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