Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation
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 s...
Published in: | Acta Mechanica Sinica |
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ftchinacadsimech:oai:dspace.imech.ac.cn:311007/77809 2023-05-15T17:11:58+02:00 Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation 张旭辉 罗大双 鲁晓兵 刘乐乐 Liu CL 2018-04-01 http://dspace.imech.ac.cn/handle/311007/77809 https://doi.org/10.1007/s10409-017-0699-y 英语 eng ACTA MECHANICA SINICA http://dspace.imech.ac.cn/handle/311007/77809 http://dx.doi.org/10.1007/s10409-017-0699-y doi:10.1007/s10409-017-0699-y null Gas hydrate-bearing sediments Dissociation Mechanical properties Shear strength Triaxial test METHANE-HYDRATE STRENGTH BEHAVIOR MODEL SAND Engineering Mechanical Mechanics 二类 期刊论文 2018 ftchinacadsimech https://doi.org/10.1007/s10409-017-0699-y 2022-12-19T18:23:44Z 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. Report Methane hydrate IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) Acta Mechanica Sinica 34 2 266 274 |
institution |
Open Polar |
collection |
IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadsimech |
language |
English |
topic |
Gas hydrate-bearing sediments Dissociation Mechanical properties Shear strength Triaxial test METHANE-HYDRATE STRENGTH BEHAVIOR MODEL SAND Engineering Mechanical Mechanics 二类 |
spellingShingle |
Gas hydrate-bearing sediments Dissociation Mechanical properties Shear strength Triaxial test METHANE-HYDRATE STRENGTH BEHAVIOR MODEL SAND Engineering Mechanical Mechanics 二类 张旭辉 罗大双 鲁晓兵 刘乐乐 Liu CL Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation |
topic_facet |
Gas hydrate-bearing sediments Dissociation Mechanical properties Shear strength Triaxial test METHANE-HYDRATE STRENGTH BEHAVIOR MODEL SAND Engineering Mechanical Mechanics 二类 |
description |
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. |
format |
Report |
author |
张旭辉 罗大双 鲁晓兵 刘乐乐 Liu CL |
author_facet |
张旭辉 罗大双 鲁晓兵 刘乐乐 Liu CL |
author_sort |
张旭辉 |
title |
Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation |
title_short |
Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation |
title_full |
Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation |
title_fullStr |
Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation |
title_full_unstemmed |
Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation |
title_sort |
mechanical properties of gas hydrate-bearing sediments during hydrate dissociation |
publishDate |
2018 |
url |
http://dspace.imech.ac.cn/handle/311007/77809 https://doi.org/10.1007/s10409-017-0699-y |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
ACTA MECHANICA SINICA http://dspace.imech.ac.cn/handle/311007/77809 http://dx.doi.org/10.1007/s10409-017-0699-y doi:10.1007/s10409-017-0699-y |
op_rights |
null |
op_doi |
https://doi.org/10.1007/s10409-017-0699-y |
container_title |
Acta Mechanica Sinica |
container_volume |
34 |
container_issue |
2 |
container_start_page |
266 |
op_container_end_page |
274 |
_version_ |
1766068726678945792 |