Numeric Simulation for the Seabed Deformation in the Process of Gas Hydrate Dissociated by Depressurization

CORC > 力学研究所 > 中国科学院力学研究所 > 环境力学重点实验室(2009-2011)

	Numeric Simulation for the Seabed Deformation in the Process of Gas Hydrate Dissociated by Depressurization
	Zhao ZW(赵振伟); Shang XC
	2010
会议名称	International Conference on Information Computing and Applications
会议日期	OCT 15-18, 2010
会议地点	Tangshan, PEOPLES R CHINA
关键词	Gas hydrates Redevelopment of ABAQUS Seabed deformation
中文摘要	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.
收录类别	CPCI-S ; EI
合作状况	国内
会议主办者	Hebei Polytechn Univ; Hebei Scene Stat Soc; Natl Sci Fdn; Hunan Inst Engn
会议录	INFORMATION COMPUTING AND APPLICATIONS, PT 1 丛书: Communications in Computer and Information Science 卷: 105 页: 296-303
会议录出版者	SPRINGER-VERLAG BERLIN, HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
语种	英语
ISSN号	1865-0929
ISBN号	978-3-642-16335-7
WOS记录号	WOS:000289449300039
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/45658]
专题	力学研究所_环境力学重点实验室(2009-2011)
推荐引用方式 GB/T 7714	Zhao ZW,Shang XC. Numeric Simulation for the Seabed Deformation in the Process of Gas Hydrate Dissociated by Depressurization[C]. 见:International Conference on Information Computing and Applications. Tangshan, PEOPLES R CHINA. OCT 15-18, 2010.