Strength Behaviors and Constitutive Model of Gas-Saturated Methane Hydrate-Bearing Sediment in Gas-Rich Phase Environment
Natural gas hydrates occupy an important position in the development of clean energy around the world in the 21st century. It is of great significance to research the mechanical properties of methane hydrate-bearing sediment (MHBS). In this paper, gas-saturated MHBS were synthesized based on the sel...
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ftdoajarticles:oai:doaj.org/article:ef706393feb24e94883463ae0a02bb62 2023-05-15T17:11:52+02:00 Strength Behaviors and Constitutive Model of Gas-Saturated Methane Hydrate-Bearing Sediment in Gas-Rich Phase Environment Yuqi Sun Yiqun Zhang Li Liu Jingsheng Lu Shouceng Tian Gensheng Li 2023-01-01T00:00:00Z https://doi.org/10.3390/jmse11010142 https://doaj.org/article/ef706393feb24e94883463ae0a02bb62 EN eng MDPI AG https://www.mdpi.com/2077-1312/11/1/142 https://doaj.org/toc/2077-1312 doi:10.3390/jmse11010142 2077-1312 https://doaj.org/article/ef706393feb24e94883463ae0a02bb62 Journal of Marine Science and Engineering, Vol 11, Iss 142, p 142 (2023) hydrate-bearing gas-saturated triaxial test strength behavior constitutive model Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2023 ftdoajarticles https://doi.org/10.3390/jmse11010142 2023-01-22T01:27:20Z Natural gas hydrates occupy an important position in the development of clean energy around the world in the 21st century. It is of great significance to research the mechanical properties of methane hydrate-bearing sediment (MHBS). In this paper, gas-saturated MHBS were synthesized based on the self-developed triaxial compressor apparatus. The triaxial shear tests were performed at temperatures of 2 °C, 3 °C, and 5 °C and confining pressures of 7.5 MPa, 10 MPa, and 15 MPa. Results indicate that the axial strain process can be divided into three stages: initial elastic deformation, initial yield deformation, and strain softening. When confining pressure is increased, the shear strength of MHBS increases at a lower confining pressure. In contrast, shear strength appears to decrease with increasing confining pressure at a higher confining pressure. There is a negative correlation between temperature and shear strength of MHBS. The initial yield strain of MHBS increases in condition due to the increase in confining pressure and the decrease in temperature. The change in strength degradation is kept within 2 MPa. Using test data, the Duncan-Chang model was modified to describe the strength behaviors of gas-saturated MHBS. The accuracy of the model was verified by comparing calculated values with test data. Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles Journal of Marine Science and Engineering 11 1 142 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
hydrate-bearing gas-saturated triaxial test strength behavior constitutive model Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
hydrate-bearing gas-saturated triaxial test strength behavior constitutive model Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Yuqi Sun Yiqun Zhang Li Liu Jingsheng Lu Shouceng Tian Gensheng Li Strength Behaviors and Constitutive Model of Gas-Saturated Methane Hydrate-Bearing Sediment in Gas-Rich Phase Environment |
topic_facet |
hydrate-bearing gas-saturated triaxial test strength behavior constitutive model Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
description |
Natural gas hydrates occupy an important position in the development of clean energy around the world in the 21st century. It is of great significance to research the mechanical properties of methane hydrate-bearing sediment (MHBS). In this paper, gas-saturated MHBS were synthesized based on the self-developed triaxial compressor apparatus. The triaxial shear tests were performed at temperatures of 2 °C, 3 °C, and 5 °C and confining pressures of 7.5 MPa, 10 MPa, and 15 MPa. Results indicate that the axial strain process can be divided into three stages: initial elastic deformation, initial yield deformation, and strain softening. When confining pressure is increased, the shear strength of MHBS increases at a lower confining pressure. In contrast, shear strength appears to decrease with increasing confining pressure at a higher confining pressure. There is a negative correlation between temperature and shear strength of MHBS. The initial yield strain of MHBS increases in condition due to the increase in confining pressure and the decrease in temperature. The change in strength degradation is kept within 2 MPa. Using test data, the Duncan-Chang model was modified to describe the strength behaviors of gas-saturated MHBS. The accuracy of the model was verified by comparing calculated values with test data. |
format |
Article in Journal/Newspaper |
author |
Yuqi Sun Yiqun Zhang Li Liu Jingsheng Lu Shouceng Tian Gensheng Li |
author_facet |
Yuqi Sun Yiqun Zhang Li Liu Jingsheng Lu Shouceng Tian Gensheng Li |
author_sort |
Yuqi Sun |
title |
Strength Behaviors and Constitutive Model of Gas-Saturated Methane Hydrate-Bearing Sediment in Gas-Rich Phase Environment |
title_short |
Strength Behaviors and Constitutive Model of Gas-Saturated Methane Hydrate-Bearing Sediment in Gas-Rich Phase Environment |
title_full |
Strength Behaviors and Constitutive Model of Gas-Saturated Methane Hydrate-Bearing Sediment in Gas-Rich Phase Environment |
title_fullStr |
Strength Behaviors and Constitutive Model of Gas-Saturated Methane Hydrate-Bearing Sediment in Gas-Rich Phase Environment |
title_full_unstemmed |
Strength Behaviors and Constitutive Model of Gas-Saturated Methane Hydrate-Bearing Sediment in Gas-Rich Phase Environment |
title_sort |
strength behaviors and constitutive model of gas-saturated methane hydrate-bearing sediment in gas-rich phase environment |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/jmse11010142 https://doaj.org/article/ef706393feb24e94883463ae0a02bb62 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Journal of Marine Science and Engineering, Vol 11, Iss 142, p 142 (2023) |
op_relation |
https://www.mdpi.com/2077-1312/11/1/142 https://doaj.org/toc/2077-1312 doi:10.3390/jmse11010142 2077-1312 https://doaj.org/article/ef706393feb24e94883463ae0a02bb62 |
op_doi |
https://doi.org/10.3390/jmse11010142 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
11 |
container_issue |
1 |
container_start_page |
142 |
_version_ |
1766068620883918848 |