Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation

doi:10.1007/s10409-017-0699-y

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	Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation
	Zhang XH(张旭辉); Luo DS(罗大双); Lu XB(鲁晓兵); Liu LL(刘乐乐); Liu CL
发表期刊	ACTA MECHANICA SINICA
	2018-04-01
卷号	34 期号:2 页码:266-274
ISSN	0567-7718
摘要	The changes in the mechanical properties of gas hydrate-bearing sediments (GHBS) induced by gas hydrate (GH) dissociation are essential to the evaluation of GH exploration and stratum instabilities. Previous studies present substantial mechanical data and constitutive models for GHBS at a given GH saturation under the non-dissociated condition. In this paper, GHBS was formed by the gas saturated method, GH was dissociated by depressurization until the GH saturation reached different dissociation degrees. The stress-strain curves were measured using triaxial tests at a same pore gas pressure and different confining pressures. The results show that the shear strength decreases progressively by 30%-90% of the initial value with GH dissociation, and the modulus decreases by 50% -75%. Simplified relationships for the modulus, cohesion, and internal friction angle with GH dissociated saturation were presented.
关键词	Gas hydrate-bearing sediments Dissociation Mechanical properties Shear strength Triaxial test
DOI	10.1007/s10409-017-0699-y
URL	查看原文
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000428923700004
关键词[WOS]	METHANE-HYDRATE ; STRENGTH ; BEHAVIOR ; MODEL ; SAND
WOS研究方向	Engineering, Mechanical ; Mechanics
WOS类目	Engineering ; Mechanics
项目资助者	National Natural Science Foundation of China [41376078, 51639008, 51239010] ; China Geological Survey [DD20160216] ; Youth Innovation Promotion Association of Chinese Academy of Sciences [2017027]
论文分区	二类
力学所作者排名	1
引用统计	被引频次：45[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/77809
专题	流固耦合系统力学重点实验室
作者单位	1.[Zhang, X. H. 2.Luo, D. S. 3.Lu, X. B.] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 4.[Zhang, X. H. 5.Lu, X. B.] Univ Chinese Acad Sci, Coll Engn, Beijing 100049, Peoples R China 6.[Liu, L. L. 7.Liu, C. L.] Minist Land & Resources, Key Lab Gas Hydrate, Qingdao 266071, Peoples R China 8.[Liu, L. L. 9.Liu, C. L.] Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhang XH,Luo DS,Lu XB,et al. Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation[J]. ACTA MECHANICA SINICA,2018,34,2,:266-274.
APA	张旭辉,罗大双,鲁晓兵,刘乐乐,&Liu CL.(2018).Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation.ACTA MECHANICA SINICA,34(2),266-274.
MLA	张旭辉,et al."Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation".ACTA MECHANICA SINICA 34.2(2018):266-274.

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