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| Numeric Simulation for the Seabed Deformation in the Process of Gas Hydrate Dissociated by Depressurization | |
Zhao ZW(赵振伟) ; Shang XC
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| Source Publication | INFORMATION COMPUTING AND APPLICATIONS, PT 1 丛书: Communications in Computer and Information Science 卷: 105 页: 296-303 |
| 2010 | |
| Conference Name | International Conference on Information Computing and Applications |
| Conference Date | OCT 15-18, 2010 |
| Conference Place | Tangshan, PEOPLES R CHINA |
| Abstract | When the gas hydrates dissociate, the mechanical properties of sediments will change, which may cause the deformation of the seabed. Such incidence will directly affect the stability of the undersea device. Under the consideration of seepage-stress coupling, this paper analyzed the deformation of seabed using finite element method. Duncan Chang's E-B constitutive model code was written, the impact of stress on the elastic constants was considered in this model. It was implemented in ABAQUS and used to simulating the nonlinear deformation of sediments. The results show that vertical effective stress of soil around the well increase significantly when gas hydrates are exploited by depressurization. The deformation of seabed increases nonlinearly with the increasing of the decomposition radius of hydrate. The maximum settlement reaches 9 m and the maximum horizontal displacement reaches 4 m. The results provide guidance on the submarine construction in the process of gas production from hydrates. |
| Keyword | Gas Hydrates Redevelopment Of Abaqus Seabed Deformation |
| WOS ID | WOS:000289449300039 |
| Funding Organization | Hebei Polytechn Univ; Hebei Scene Stat Soc; Natl Sci Fdn; Hunan Inst Engn |
| ISBN | 978-3-642-16335-7 |
| Indexed By | CPCI-S ; EI |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/45658 |
| Collection | 环境力学重点实验室(2009-2011) |
| Recommended Citation GB/T 7714 | Zhao ZW,Shang XC. Numeric Simulation for the Seabed Deformation in the Process of Gas Hydrate Dissociated by Depressurization[C]INFORMATION COMPUTING AND APPLICATIONS, PT 1 丛书: Communications in Computer and Information Science 卷: 105 页: 296-303,2010. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| ID-255.pdf（228KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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