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.
Source PublicationProceedings of the International Offshore and Polar Engineering Conference
2009
Conference Name19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
Conference DateJune 21, 2009 - June 26, 2009
Conference PlaceOsaka, Japan
AbstractBased 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).
KeywordBusiness Software Deformation And Stress Simulation Stability Sliding Force
ISBN9781880653531
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60468
Collection水动力学与海洋工程重点实验室(2009-2011)
Corresponding AuthorShuyun, W.
Recommended Citation
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],2009.
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