A geomechanical model for gas hydrate-bearing sediments
Gas hydrate-bearing sediments are generally present in marine continental margins and permafrost sediments worldwide. Methane release from gas hydrate-bearing sediments may have a negative impact on greenhouse effects. Furthermore, methane hydrate deposits can lead to large-scale submarine slope fai...
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Language: | English |
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Thomas Telford Ltd.
2017
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Online Access: | http://dx.doi.org/10.1680/jenge.15.00050 https://www.icevirtuallibrary.com/doi/pdf/10.1680/jenge.15.00050 |
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crtelford:10.1680/jenge.15.00050 2024-09-15T18:18:38+00:00 A geomechanical model for gas hydrate-bearing sediments Gai, Xuerui Sánchez, Marcelo 2017 http://dx.doi.org/10.1680/jenge.15.00050 https://www.icevirtuallibrary.com/doi/pdf/10.1680/jenge.15.00050 en eng Thomas Telford Ltd. Environmental Geotechnics volume 4, issue 2, page 143-156 ISSN 2051-803X journal-article 2017 crtelford https://doi.org/10.1680/jenge.15.00050 2024-08-01T04:18:04Z Gas hydrate-bearing sediments are generally present in marine continental margins and permafrost sediments worldwide. Methane release from gas hydrate-bearing sediments may have a negative impact on greenhouse effects. Furthermore, methane hydrate deposits can lead to large-scale submarine slope failures, blowouts, platform foundation failures and borehole instability. Gas hydrates also constitute an attractive source of energy as they are estimated to contain very large reserves of methane. This paper presents a constitutive model to simulate the mechanical behaviour of methane hydrate-bearing soils based on the concept of an hierarchical single-surface (Hiss) framework. The core of the proposed model includes the Hiss critical-state framework, subloading concepts and hydrate enhancement factors. The performance of the model was found to be very satisfactory when compared against experimental data from triaxial tests based on natural and synthesised core samples involving different hydrate saturations, hydrate morphology and confinements. Article in Journal/Newspaper Methane hydrate permafrost ICE Virtual Library (ICE Publishing) Environmental Geotechnics 4 2 143 156 |
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Open Polar |
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ICE Virtual Library (ICE Publishing) |
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crtelford |
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English |
description |
Gas hydrate-bearing sediments are generally present in marine continental margins and permafrost sediments worldwide. Methane release from gas hydrate-bearing sediments may have a negative impact on greenhouse effects. Furthermore, methane hydrate deposits can lead to large-scale submarine slope failures, blowouts, platform foundation failures and borehole instability. Gas hydrates also constitute an attractive source of energy as they are estimated to contain very large reserves of methane. This paper presents a constitutive model to simulate the mechanical behaviour of methane hydrate-bearing soils based on the concept of an hierarchical single-surface (Hiss) framework. The core of the proposed model includes the Hiss critical-state framework, subloading concepts and hydrate enhancement factors. The performance of the model was found to be very satisfactory when compared against experimental data from triaxial tests based on natural and synthesised core samples involving different hydrate saturations, hydrate morphology and confinements. |
format |
Article in Journal/Newspaper |
author |
Gai, Xuerui Sánchez, Marcelo |
spellingShingle |
Gai, Xuerui Sánchez, Marcelo A geomechanical model for gas hydrate-bearing sediments |
author_facet |
Gai, Xuerui Sánchez, Marcelo |
author_sort |
Gai, Xuerui |
title |
A geomechanical model for gas hydrate-bearing sediments |
title_short |
A geomechanical model for gas hydrate-bearing sediments |
title_full |
A geomechanical model for gas hydrate-bearing sediments |
title_fullStr |
A geomechanical model for gas hydrate-bearing sediments |
title_full_unstemmed |
A geomechanical model for gas hydrate-bearing sediments |
title_sort |
geomechanical model for gas hydrate-bearing sediments |
publisher |
Thomas Telford Ltd. |
publishDate |
2017 |
url |
http://dx.doi.org/10.1680/jenge.15.00050 https://www.icevirtuallibrary.com/doi/pdf/10.1680/jenge.15.00050 |
genre |
Methane hydrate permafrost |
genre_facet |
Methane hydrate permafrost |
op_source |
Environmental Geotechnics volume 4, issue 2, page 143-156 ISSN 2051-803X |
op_doi |
https://doi.org/10.1680/jenge.15.00050 |
container_title |
Environmental Geotechnics |
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4 |
container_issue |
2 |
container_start_page |
143 |
op_container_end_page |
156 |
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1810456728393744384 |