Analysis of creep characteristics of hydrate sediments under compressive loading

LI Hui; ZHANG Xuhui; LU Cheng; XIE Pengfei; LU Xiaobing

doi:10.16562/j.cnki.0256-1492.2022121901

Marine Geology & Quaternary Geology > 2023 > 43(6): 217-225. > DOI: 10.16562/j.cnki.0256-1492.2022121901

LI Hui，ZHANG Xuhui，LU Cheng，et al. Analysis of creep characteristics of hydrate sediments under compressive loading[J]. Marine Geology & Quaternary Geology，2023，43(6)：217-225. DOI: 10.16562/j.cnki.0256-1492.2022121901

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Analysis of creep characteristics of hydrate sediments under compressive loading

LI Hui^{1, 2,},
ZHANG Xuhui^{1, 2, ,},
LU Cheng³,
XIE Pengfei^{1, 4},
LU Xiaobing^{1, 2}

1.
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
2.
University of Chinese Academy of Science, School of Engineering Science, Beijing 100049, China
3.
China Geological Survey Oil and Gas Resources Survey Center, Beijing 100083, China
4.
China University of Geosciences ( Beijing ), School of Engineering Technology, Beijing 100083, China

More Information

Received Date: December 18, 2022
Revised Date: March 21, 2023
Available Online: December 10, 2023

Graphical Abstract

Abstract

Abstract

Hydrate mining may induce submarine landslides or other engineering geological disasters. Long-term and stable gas production is required for any commercial exploitation for natural gas hydrate. Understanding the creep properties of hydrate-bearing sediments is importance for the estimation of long-term stratum instability. Therefore, we analyzed the creep characteristics of silty clay by using a serial test on consolidation drainage creep under compression loading conditions with hydrate reservoir silty clay as the test medium. The results show that the deformation curves of hydrate bearing sediments presented three stages: instantaneous deformation, consolidation deformation, and creep deformation. With the increase of load and hydrate saturation, the creep strain increased progressively. The modified Singh-Mitchell creep model was applied, by which the creep properties of hydrate bearing sediments were well predicted at different stress levels and hydrate saturations.
- hydrate-bearing sediments,
- creep,
- hydrate saturation,
- modified Singh-Mitchell creep model

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References (38)

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