Study on the mechanical properties of hydrate-bearing silty clay

doi:10.1016/j.marpetgeo.2015.04.019

IMECH-IR > 流固耦合系统力学重点实验室

	Study on the mechanical properties of hydrate-bearing silty clay
	Zhang XH(张旭辉); Lu XB(鲁晓兵); Shi YH; Xia Z; Zhang, XH (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Fluid Solid Coupling Syst Mech, Beijing 100190, Peoples R China.
发表期刊	MARINE AND PETROLEUM GEOLOGY
	2015-11
卷号	67 页码:72-80
ISSN	0264-8172
摘要	The mechanical properties are important for the evaluation of stratum deformation and instability in hydrate exploitation. By using an integrated test apparatus for synthesis of hydrate sediment and triaxial tests, a series of compression tests is conducted on the silty clay containing tetrahydrofuran hydrate (SCTH) similar to that of South China Sea. The stress-strain curves and Mohr circles are obtained at different degree of hydrate saturations and confining pressures. The silty clay containing tetrahydrofuran hydrate shows typical ductile behavior, the shear strength increases linearly with the increase of hydrate saturation and confining pressure. The secant modulus increases with the increase of hydrate saturation. The shear strength is analyzed based on the Drucker-Prager criterion, Mohr-Coulomb criterion, Lade-Duncan criterion, while the secant modulus is analyzed using the mixed law of composite materials. It is shown that the strength can be well described by the Drucker-Prager criterion and Mohr-Coulomb criterion, and the secant modulus is close to the harmonic average of the modulus of soil skeleton and hydrate in SCTH. (C) 2015 Elsevier Ltd. All rights reserved.
关键词	Hydrate Silty-clay Secant Modulus Shear Strength The Drucker-prager Criterion The Mixed Law
DOI	10.1016/j.marpetgeo.2015.04.019
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000366066500005
关键词[WOS]	METHANE GAS HYDRATE ; SEDIMENTS ; STRENGTH ; BEHAVIOR
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
项目资助者	This study is supported by the National Natural Science Foundation of China (No. 41376078, No. 51239010) and the China Geological Survey project (No. GZH201100311). Many thanks to the reviewers and professor Baiyi Wang for the revisions of English expressions.
课题组名称	LMFS海洋土力学(LHO)
论文分区	二类/Q1
引用统计	被引频次：51[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/311007/58320
专题	流固耦合系统力学重点实验室
通讯作者	Zhang, XH (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Fluid Solid Coupling Syst Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Zhang XH,Lu XB,Shi YH,et al. Study on the mechanical properties of hydrate-bearing silty clay[J]. MARINE AND PETROLEUM GEOLOGY,2015,67:72-80.
APA	张旭辉,鲁晓兵,Shi YH,Xia Z,&Zhang, XH .(2015).Study on the mechanical properties of hydrate-bearing silty clay.MARINE AND PETROLEUM GEOLOGY,67,72-80.
MLA	张旭辉,et al."Study on the mechanical properties of hydrate-bearing silty clay".MARINE AND PETROLEUM GEOLOGY 67(2015):72-80.

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