Analysis of Hydrate Heterogeneous Distribution Effects on Mechanical Characteristics of Hydrate-Bearing Sediments

doi:10.1021/acs.energyfuels.0c04388

	Analysis of Hydrate Heterogeneous Distribution Effects on Mechanical Characteristics of Hydrate-Bearing Sediments
	Liu, Jian-Wu 1,2,3; Li, Xiao-Sen 1,2,3; Kou, Xuan 1,2,3; Wang, Yi 1,2,3; Li, Li-Jia 1,2,3
刊名	ENERGY & FUELS
	2021-03-18
卷号	35 期号:6 页码:4914-4924
ISSN号	0887-0624
DOI	10.1021/acs.energyfuels.0c04388
通讯作者	Li, Xiao-Sen(lixs@ms.giec.ac.cn)
英文摘要	It is reported that hydrate distributes inhomogeneously in synthesized gas hydrate-bearing sediments (GHBS). To investigate the effect of hydrate distribution heterogeneity on the mechanical characteristics of the hydrate-bearing sediments, we modeled the specimens with uniform hydrate saturation but different hydrate distributions and simulated the triaxial compression test process of the specimens using discrete element method (DEM). The hydrate particles were randomly inserted into the specified intergranular void space as in layered pore-filling mode to simulate the heterogeneous distribution. The analyses of the simulation results, including stress-strain curves and volumetric responses, indicated that the heterogeneity of hydrate distribution has great impacts on the mechanical parameters of hydrate-bearing sediments, including the elastics modulus, shear strength, and dilation. The anisotropy of the hydrate heterogeneous distribution effect is also observed. The difference of mechanical properties among the specimens with different hydrate distributions can reach over 15%, which is already comparative to the difference between the hydrate-bearing specimen and the one with twice its hydrate saturation. According to the findings of this work, the effect of hydrate heterogeneous distribution is required to be considered while characterizing the mechanical properties of GHBS.
资助项目	Key Program of the National Natural Science Foundation of China[51736009] ; Guangdong Special Support Program[2019BT02L278] ; Key Laboratory Fund of Gas Hydrate, CAS[E0290203] ; National Natural Science Foundation of China[22008237] ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-SLH041] ; Natural Science Foundation of Guangdong Province, China[2019A1515012086] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; Guangdong Province Department of Natural Resources[GDNRC[2020]044]
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000631407400022
资助机构	Key Program of the National Natural Science Foundation of China ; Guangdong Special Support Program ; Key Laboratory Fund of Gas Hydrate, CAS ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Natural Science Foundation of Guangdong Province, China ; Special Project for Marine Economy Development of Guangdong Province ; Guangdong Province Department of Natural Resources
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/33076]
专题	中国科学院广州能源研究所
通讯作者	Li, Xiao-Sen
作者单位	1.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jian-Wu,Li, Xiao-Sen,Kou, Xuan,et al. Analysis of Hydrate Heterogeneous Distribution Effects on Mechanical Characteristics of Hydrate-Bearing Sediments[J]. ENERGY & FUELS,2021,35(6):4914-4924.
APA	Liu, Jian-Wu,Li, Xiao-Sen,Kou, Xuan,Wang, Yi,&Li, Li-Jia.(2021).Analysis of Hydrate Heterogeneous Distribution Effects on Mechanical Characteristics of Hydrate-Bearing Sediments.ENERGY & FUELS,35(6),4914-4924.
MLA	Liu, Jian-Wu,et al."Analysis of Hydrate Heterogeneous Distribution Effects on Mechanical Characteristics of Hydrate-Bearing Sediments".ENERGY & FUELS 35.6(2021):4914-4924.