Dynamic mechanical properties of tetrahydrofuran hydrate-bearing silty clay sediments

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Dynamic mechanical properties of tetrahydrofuran hydrate-bearing silty clay sediments
	Sun FF(孙芳芳); Wang SY(王淑云); Zhang XH(张旭辉); 鲁晓兵 Lu X
	2019
会议日期	June 16, 2019 - June 21, 2019
会议地点	Honolulu, HI, United states
关键词	Deformation Dynamic load Failure strength Hydrate-bearing sediment Pore pressure
页码	32-35
英文摘要	The dynamic mechanical properties of gas hydrate-bearing sediments (GHBS) are of great importance for the safety evaluation of gas hydrate stratum under the earthquake loading and the vibration during engineering activities. Previous research focuses on the static properties of GHBS before and after gas hydrate dissociation. In this paper, the dynamic tri-axial tests on unsaturated tetrahydrofuran hydrate-bearing silty clay sediments (THBS) are conducted under the frequency of 1.0 Hz, the effective confining pressure 1.0 MPa, and relative dynamic load amplitude (dynamic load amplitude/effective confining pressure) of 0– 0.6. When the relative dynamic load amplitude is lower than 0.5, the failure strength of THBS after the dynamic loading is greater than the static failure strength, and dynamic compaction and strengthen effect prevails. While when the relative dynamic load amplitude (DLA) exceeds 0.5, the failure effect dominates, reducing the shear strength of THBS greatly. The pore pressure and deformation develop slowly with the increase of the load time. © 2019 by the International Society of Offshore and Polar Engineers (ISOPE).
会议录	Proceedings of the International Offshore and Polar Engineering Conference
语种	英语
ISBN号	9781880653852
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/85103]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.College of Engineering, University of Chinese Academy of Sciences, Beijing, China 2.Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Sun FF,Wang SY,Zhang XH,et al. Dynamic mechanical properties of tetrahydrofuran hydrate-bearing silty clay sediments[C]. 见:. Honolulu, HI, United states. June 16, 2019 - June 21, 2019.