IMECH-IR  > 流固耦合系统力学重点实验室
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
Source PublicationACTA MECHANICA SINICA
2018-04-01
Volume34Issue:2Pages:266-274
ISSN0567-7718
AbstractThe 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.
KeywordGas hydrate-bearing sediments Dissociation Mechanical properties Shear strength Triaxial test
DOI10.1007/s10409-017-0699-y
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Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000428923700004
WOS KeywordMETHANE-HYDRATE ; STRENGTH ; BEHAVIOR ; MODEL ; SAND
WOS Research AreaEngineering, Mechanical ; Mechanics
WOS SubjectEngineering ; Mechanics
Funding OrganizationNational Natural Science Foundation of China [41376078, 51639008, 51239010] ; China Geological Survey [DD20160216] ; Youth Innovation Promotion Association of Chinese Academy of Sciences [2017027]
Classification二类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77809
Collection流固耦合系统力学重点实验室
Affiliation1.[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
Recommended Citation
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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