The effects of gas hydrate dissociation on the stability of pipeline in seabed

IMECH-IR > 水动力学与海洋工程重点实验室(2009-2011)

	The effects of gas hydrate dissociation on the stability of pipeline in seabed
	Wang SY(王淑云); Zheng W; Lu XB(鲁晓兵); Li QP(李清平); Shuyun, W.
会议录名称	Proceedings of the International Offshore and Polar Engineering Conference
	2009
会议名称	19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
会议日期	June 21, 2009 - June 26, 2009
会议地点	Osaka, Japan
摘要	Based on an assumed vertical pipeline in seabed, which contains sand and gas hydrate sediment, the deformation and stress of pipeline and sediment are numerically simulated with the different area of gas hydrate dissociation by using the business software ABAQUS. The effects of gas hydrate dissociation area and the thickness of overlaying sand sediment on the stability of pipeline are estimated. It is shown that gas hydrate dissociation obviously affects the deformation of pipeline and sediment. With the expansion of dissociation area, the deformation of pipeline and sediment increase obviously, the shear stress and the stress yielding area in sediment increase too. The pipeline is elastic and stable first, and then becomes to bend and finally be whole instability. When the thickness of overlaying sand sediment increases, the deformation of pipeline and surrounding sediment also increase because of the gravity and the sliding force of overlaying sand sediment. Copyright © 2009 by The International Society of Offshore and Polar Engineers (ISOPE).
关键词	Business Software Deformation And Stress Simulation Stability Sliding Force
ISBN号	9781880653531
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/60468
专题	水动力学与海洋工程重点实验室(2009-2011)
通讯作者	Shuyun, W.
推荐引用方式 GB/T 7714	Wang SY,Zheng W,Lu XB,et al. The effects of gas hydrate dissociation on the stability of pipeline in seabed[C]Proceedings of the International Offshore and Polar Engineering Conference,2009.

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