| Centrifuge experimental study on instability of seabed stratum caused by gas hydrate dissociation | |
| Zhang, X. H.1; Lu, X. B.1; Shi, Y. H.2; Xia, Z.2; Liu, W. T.2; Zhang, XH (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. | |
| Source Publication | OCEAN ENGINEERING
 |
| 2015-09-01 | |
| Volume | 105Pages:1-9 |
| ISSN | 0029-8018 |
| Abstract | Gas hydrate (GH) is a kind of solid energy resource with huge reserve. Stratum instability (such as marine landslide) may be caused by hydrate dissociation due to the softening of stratum and the buildup of excess pore pressure. In this paper, a centrifuge experiment was conducted to study the evolution of stratum instability during hydrate dissociation. The hydrate dissociation zone expands from the heating source in hydrate bearing sediment (HBS). The pore fluid pressure increases significantly accompanying the slow seepage and soil layer's softening and deformation. Large horizontal displacements and vertical displacements can be observed and increase with the expansion of hydrate dissociation zone. The results can be used for the verification of numerical simulations and a reference for engineering design. (C) 2015 Elsevier Ltd. All rights reserved.; Gas hydrate (GH) is a kind of solid energy resource with huge reserve. Stratum instability (such as marine landslide) may be caused by hydrate dissociation due to the softening of stratum and the buildup of excess pore pressure. In this paper, a centrifuge experiment was conducted to study the evolution of stratum instability during hydrate dissociation. The hydrate dissociation zone expands from the heating source in hydrate bearing sediment (HBS). The pore fluid pressure increases significantly accompanying the slow seepage and soil layer's softening and deformation. Large horizontal displacements and vertical displacements can be observed and increase with the expansion of hydrate dissociation zone. The results can be used for the verification of numerical simulations and a reference for engineering design. (C) 2015 Elsevier Ltd. All rights reserved. |
| Keyword | Gas Hydrate Stratum Instability Centrifuge Test Dissociation Zone Pore Fluid Pressure |
| DOI | 10.1016/j.oceaneng.2015.06.006 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000360417700001 |
| WOS Keyword | SEDIMENTS ; SLOPE |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
| Funding Organization | This study is part of Project no. GZH201100311 funded by China Geological Survey and Projects nos. 51239010, 11102209, and 41376078 funded by National Natural Science Foundation of China. |
| Department | LMFS海洋土力学(LHO) |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/55778 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Zhang, XH (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Guangzhou Marine Geol Survey, Marine Environm & Engn Geol Survey, Guangzhou 510075, Guangdong, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, X. H.,Lu, X. B.,Shi, Y. H.,et al. Centrifuge experimental study on instability of seabed stratum caused by gas hydrate dissociation[J]. OCEAN ENGINEERING,2015,105:1-9. |
| APA | Zhang, X. H.,Lu, X. B.,Shi, Y. H.,Xia, Z.,Liu, W. T.,&Zhang, XH .(2015).Centrifuge experimental study on instability of seabed stratum caused by gas hydrate dissociation.OCEAN ENGINEERING,105,1-9. |
| MLA | Zhang, X. H.,et al."Centrifuge experimental study on instability of seabed stratum caused by gas hydrate dissociation".OCEAN ENGINEERING 105(2015):1-9. |
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| 1-s2.0-S002980181500（7473KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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