IMECH-IR  > 流固耦合系统力学重点实验室
Influence of gas hydrate dissociation on mechanical properties of gas hydrate-bearing sediment
Zhang W; Li Q; Li Y; Cun H
Source PublicationFrontiers in Offshore Geotechnics III - 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015
2015
Conference NameProceedings of the 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015
Conference DateJune 10, 2015 - June 12, 2015
Conference PlaceOslo, Norway
AbstractGas 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.
KeywordDissociation Temperature Environmental Conditions Gas Hydrate Bearing Sediments Hydrate Dissociation Internal Friction Angle Mechanical Characteristics Mechanical Parameters Sediment Mechanical Properties
ISBN9781138028487
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60169
Collection流固耦合系统力学重点实验室
Recommended Citation
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],2015.
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