Influence of gas hydrate dissociation on mechanical properties of gas hydrate-bearing sediment

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	Influence of gas hydrate dissociation on mechanical properties of gas hydrate-bearing sediment
	Zhang W; Li Q; Li Y; Cun H
会议录名称	Frontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015
	2015
会议名称	Proceedings of the 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015
会议日期	June 10, 2015 - June 12, 2015
会议地点	Oslo, Norway
摘要	Gas hydrate dissociation in marine sediments will cause increase of excess pore pressure, loss of soil particle cementation and breakdown of soil structure, which may result in large deformations of the strata and offshore structure foundations. Based on the permafrost and ocean environmental conditions, a high pressure and low temperature apparatus has been self-designed and a series of triaxial tests have been carried out to study the influence of gas hydrate dissociation on mechanical properties of gas hydrate-bearing sediment. The effects of dissociation time, confining pressure and dissociation temperature on the mechanical characteristics of the sediment containing gas hydrates are investigated. Moreover, the mechanical parameters of cohesion and internal friction angle are quantitatively analyzed during hydrate dissociation. This study is important for understanding of the evolution of sediment mechanical properties during hydrate dissociation, for controlling hydrate reservoir stability and project risk. © 2015 Taylor & Francis Group, London.
关键词	Dissociation Temperature Environmental Conditions Gas Hydrate Bearing Sediments Hydrate Dissociation Internal Friction Angle Mechanical Characteristics Mechanical Parameters Sediment Mechanical Properties
ISBN号	9781138028487
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/311007/60169
专题	流固耦合系统力学重点实验室
推荐引用方式 GB/T 7714	Zhang W,Li Q,Li Y,et al. Influence of gas hydrate dissociation on mechanical properties of gas hydrate-bearing sediment[C]Frontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015,2015.

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