Study on the Mechanical Properties of Silty Clay Sediments with Nodular Hydrate Occurrence

doi:10.3390/jmse10081059

IMECH-IR > 流固耦合系统力学重点实验室

	Study on the Mechanical Properties of Silty Clay Sediments with Nodular Hydrate Occurrence
	Lu, Cheng 1,2; 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, Bin 4; Zhang, Ziqin 4; Qin, Xuwen 2,6; Zhang, Shuai 1; Bian, Hang 1,4
通讯作者	Zhang, Xuhui(zhangxuhui@imech.ac.cn)
发表期刊	JOURNAL OF MARINE SCIENCE AND ENGINEERING
	2022-08-01
卷号	10 期号:8 页码:13
摘要	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.
关键词	segregated gas hydrate mass silty clay sediment volume fraction stress-strain curve
DOI	10.3390/jmse10081059
收录类别	SCI
语种	英语
WOS记录号	WOS:000834931300001
关键词[WOS]	STRESS-STRAIN BEHAVIOR ; METHANE-HYDRATE ; GAS HYDRATE ; PHYSICAL-PROPERTIES ; CONSTITUTIVE MODEL ; BEARING SEDIMENTS ; PREDICTION
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Ocean ; Oceanography
资助项目	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]
项目资助者	China Geological Survey Project ; National Natural Science Foundation of China ; Guangdong Major Project of Basic and Applied Basic Research
论文分区	二类
力学所作者排名	1
RpAuthor	Zhang, Xuhui
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/89841
专题	流固耦合系统力学重点实验室
作者单位	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
推荐引用方式 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.
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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