Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments
Creep behaviors of methane hydrate-bearing frozen specimens are important to predict the long-term stability of the hydrate-bearing layers in Arctic and permafrost regions. In this study, a series of creep tests were conducted, and the results indicated that: (1) higher deviator stress (external loa...
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ftrepec:oai:RePEc:gam:jeners:v:12:y:2019:i:2:p:251-:d:197881 2024-04-14T08:07:53+00:00 Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments Yanghui Li Peng Wu Xiang Sun Weiguo Liu Yongchen Song Jiafei Zhao https://www.mdpi.com/1996-1073/12/2/251/pdf https://www.mdpi.com/1996-1073/12/2/251/ unknown https://www.mdpi.com/1996-1073/12/2/251/pdf https://www.mdpi.com/1996-1073/12/2/251/ article ftrepec 2024-03-19T10:28:24Z Creep behaviors of methane hydrate-bearing frozen specimens are important to predict the long-term stability of the hydrate-bearing layers in Arctic and permafrost regions. In this study, a series of creep tests were conducted, and the results indicated that: (1) higher deviator stress (external load) results in larger initial strain, axial strain, and strain rate at a specific elapsed time. Under low deviator stress levels, the axial strain is not large and does not get into the tertiary creep stage in comparison with that under high deviator stress, which can be even up to 35% and can cause failure; (2) both axial strain and strain rate of methane hydrate-bearing frozen specimens increase with the enhancement of deviator stress, the decrease of confining pressure, and the decrease of temperature; (3) the specimens will be damaged rather than in stable creep stage during creeping when the deviator stress exceeds the quasi-static strength of the specimens. methane hydrate; creep tests; permafrost; mechanical property Article in Journal/Newspaper Arctic Methane hydrate permafrost RePEc (Research Papers in Economics) Arctic |
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Open Polar |
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RePEc (Research Papers in Economics) |
op_collection_id |
ftrepec |
language |
unknown |
description |
Creep behaviors of methane hydrate-bearing frozen specimens are important to predict the long-term stability of the hydrate-bearing layers in Arctic and permafrost regions. In this study, a series of creep tests were conducted, and the results indicated that: (1) higher deviator stress (external load) results in larger initial strain, axial strain, and strain rate at a specific elapsed time. Under low deviator stress levels, the axial strain is not large and does not get into the tertiary creep stage in comparison with that under high deviator stress, which can be even up to 35% and can cause failure; (2) both axial strain and strain rate of methane hydrate-bearing frozen specimens increase with the enhancement of deviator stress, the decrease of confining pressure, and the decrease of temperature; (3) the specimens will be damaged rather than in stable creep stage during creeping when the deviator stress exceeds the quasi-static strength of the specimens. methane hydrate; creep tests; permafrost; mechanical property |
format |
Article in Journal/Newspaper |
author |
Yanghui Li Peng Wu Xiang Sun Weiguo Liu Yongchen Song Jiafei Zhao |
spellingShingle |
Yanghui Li Peng Wu Xiang Sun Weiguo Liu Yongchen Song Jiafei Zhao Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments |
author_facet |
Yanghui Li Peng Wu Xiang Sun Weiguo Liu Yongchen Song Jiafei Zhao |
author_sort |
Yanghui Li |
title |
Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments |
title_short |
Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments |
title_full |
Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments |
title_fullStr |
Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments |
title_full_unstemmed |
Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments |
title_sort |
creep behaviors of methane hydrate-bearing frozen sediments |
url |
https://www.mdpi.com/1996-1073/12/2/251/pdf https://www.mdpi.com/1996-1073/12/2/251/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Methane hydrate permafrost |
genre_facet |
Arctic Methane hydrate permafrost |
op_relation |
https://www.mdpi.com/1996-1073/12/2/251/pdf https://www.mdpi.com/1996-1073/12/2/251/ |
_version_ |
1796305292621774848 |