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Experimental Study on the Shear Band of Methane Hydrate-Bearing Sediment

文献类型：期刊论文

作者Lu, Xiaobing2,3; Zhang, Xuhui2,3; Sun, Fangfang2,3; Wang, Shuyun3; Liu, Lele1; Liu, Changling1; Zhang XH(张旭辉); Liu LL(刘乐乐); Lu XB(鲁晓兵); Wang SY(王淑云)
刊名JOURNAL OF MARINE SCIENCE AND ENGINEERING
出版日期2021-11-01
卷号9期号:11页码:16
关键词hydrate-bearing sediment shear band hydrate saturation triaxial compression CT scanning
DOI10.3390/jmse9111158
通讯作者Zhang, Xuhui(zhangxuhui@imech.ac.cn)
英文摘要The occurrence of a shear band is often thought as the precursor of failure. To study the initiation of shear banding in gas hydrate-bearing sediments, two groups of triaxial compression tests combined with a CT (computer tomography) scan were conducted by triaxial CT-integrated equipment under two confining pressures and seven hydrate saturations. The macro stress-strain curves and the corresponding CT scanning images of the micro-structure and the distribution of the components were obtained. The geometric parameters of the shear bands were measured based on the CT images at four typical axial strains, respectively. The distribution characteristics of soil particles, water, hydrate and gas were also analyzed. It is shown that the existence of methane hydrate changes the mechanical property of hydrate-bearing sediment from plastic failure to brittle failure when the hydrate saturation is over 13%, which occurs in the range of the tests in this paper. The peak of the deviatoric stress increases with the hydrate saturation. The shear band is in either a single oblique line or inter-cross lines depending on the hydrate saturation, the effective confining pressure and the initial distribution of the gas hydrate. Most of the shear band surfaces are not straight, and the widths of the shear bands are almost non-uniformly distributed.
WOS关键词STRAIN LOCALIZATION ; SAND ; STABILITY ; DEFORMATION ; THICKNESS
资助项目National Natural Science Foundation of China[12072347] ; National Natural Science Foundation of China[11872365] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017027]
WOS研究方向Engineering ; Oceanography
语种英语
WOS记录号WOS:000724616600001
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
源URL[http://dspace.imech.ac.cn/handle/311007/88055]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Zhang, Xuhui
作者单位1.Qingdao Inst Marine Geol, Qingdao 266237, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Xiaobing,Zhang, Xuhui,Sun, Fangfang,et al. Experimental Study on the Shear Band of Methane Hydrate-Bearing Sediment[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2021,9(11):16.
APA Lu, Xiaobing.,Zhang, Xuhui.,Sun, Fangfang.,Wang, Shuyun.,Liu, Lele.,...&王淑云.(2021).Experimental Study on the Shear Band of Methane Hydrate-Bearing Sediment.JOURNAL OF MARINE SCIENCE AND ENGINEERING,9(11),16.
MLA Lu, Xiaobing,et al."Experimental Study on the Shear Band of Methane Hydrate-Bearing Sediment".JOURNAL OF MARINE SCIENCE AND ENGINEERING 9.11(2021):16.

入库方式： OAI收割

来源：力学研究所

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