| Study on the Mechanical Properties of Silty Clay Sediments with Nodular Hydrate Occurrence | |
Lu, Cheng1,2; Xie PF(谢鹏飞)3,4; Li H(李辉)3,5; Zhang XH(张旭辉)3,5 ; Lu XB(鲁晓兵)3,5; Zhang, Bin4; Zhang, Ziqin4; Qin, Xuwen2,6; Zhang, Shuai1; Bian, Hang1,4
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| Corresponding Author | Zhang, Xuhui([email protected]) |
| Source Publication | JOURNAL OF MARINE SCIENCE AND ENGINEERING
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| 2022-08-01 | |
| Volume | 10Issue:8Pages:13 |
| Abstract | Natural gas hydrates are a strategic energy resource in China. The China Geological Survey has discovered segregated hydrate mass formations under the seepage mechanism in the South China Sea through exploration, and gas hydrates occur in nodular, massive, and vein formations in silty clay sediment. Previous work has focused on the analysis of sediment mechanical properties with respect to the uniform distribution of natural gas hydrates in pore spaces, but the mechanical properties of hydrate-bearing sediments containing segregated hydrate masses are not well understood. Spherical hydrates are used to characterize nodular hydrates, a method is proposed for the preparation of sediment samples containing segregated hydrates masses, and a series of triaxial compression tests are carried out on the samples containing spherical hydrates with two kinds of particle sizes at a certain volume fraction. The paper presents triaxial stress-strain curves for the samples containing spherical hydrates. A model for predicting elastic modulus is established. The results present two distinct stages in the triaxial compression tests of silty clay sediments containing spherical hydrates; they also show that the elastic moduli predicted by the model are in good agreement with the experimental results when the model parameters are set at alpha = 0.5 and beta = 0.21. These results provide fundamental mechanical parameters for the safety evaluation of strata containing segregated gas hydrates. |
| Keyword | segregated gas hydrate mass silty clay sediment volume fraction stress-strain curve |
| DOI | 10.3390/jmse10081059 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000834931300001 |
| WOS Keyword | STRESS-STRAIN BEHAVIOR ; METHANE-HYDRATE ; GAS HYDRATE ; PHYSICAL-PROPERTIES ; CONSTITUTIVE MODEL ; BEARING SEDIMENTS ; PREDICTION |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Ocean ; Oceanography |
| Funding Project | China Geological Survey Project[DD20211350] ; National Natural Science Foundation of China[51991365] ; National Natural Science Foundation of China[11872365] ; Guangdong Major Project of Basic and Applied Basic Research[2020B0301030003] |
| Funding Organization | China Geological Survey Project ; National Natural Science Foundation of China ; Guangdong Major Project of Basic and Applied Basic Research |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Zhang, Xuhui |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89841 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.China Geol Survey, Ctr Oil & Nat Gas Resource Explorat, Beijing 100083, Peoples R China; 2.China Geol Survey, Guangzhou Marine Geol Survey, Guangzhou 510075, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 4.China Univ Geosci Beijing, Sch Engn & Technol, Beijing 100083, Peoples R China; 5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 6.China Geol Survey, Dept Gas Hydrate, Beijing 100037, Peoples R China |
| Recommended Citation GB/T 7714 | Lu, Cheng,Xie PF,Li H,et al. Study on the Mechanical Properties of Silty Clay Sediments with Nodular Hydrate Occurrence[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2022,10,8,:13.Rp_Au:Zhang, Xuhui |
| APA | Lu, Cheng.,谢鹏飞.,李辉.,张旭辉.,鲁晓兵.,...&Bian, Hang.(2022).Study on the Mechanical Properties of Silty Clay Sediments with Nodular Hydrate Occurrence.JOURNAL OF MARINE SCIENCE AND ENGINEERING,10(8),13. |
| MLA | Lu, Cheng,et al."Study on the Mechanical Properties of Silty Clay Sediments with Nodular Hydrate Occurrence".JOURNAL OF MARINE SCIENCE AND ENGINEERING 10.8(2022):13. |
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