Study on wave propagation across a single rough fracture by the modified thin-layer interface model

doi:10.1016/j.jappgeo.2014.09.005

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	Study on wave propagation across a single rough fracture by the modified thin-layer interface model
	Li, J. C.1; Li, H. B.1; Zhao, J.2
刊名	JOURNAL OF APPLIED GEOPHYSICS
	2014
卷号	110 页码:106-114
关键词	Wave propagation Fracture Thin-layer interface model Fracture roughness Fracture weathering
ISSN号	0926-9851
DOI	10.1016/j.jappgeo.2014.09.005
英文摘要	Wave propagation across a fracture is dependent on the specific stiffness of the fracture, which is implicitly related to the fracture surface characteristics, such as roughness, matching and wall strength. In this study, a rough fracture with different void spaces and contact areas is modeled by two smooth surfaces separated by square column asperities with different heights, that is, the fracture is modeled as a thin-layer interface. The material properties of the asperities also vary to represent different weathering grades of fracture surfaces. The wave propagation equation is established by analyzing the interaction between a stress wave and the rough fracture. By back analysis, the relation between the normal stress and the closure of the fracture is derived, where the effects of the contact area, the fracture thickness, the frequency of the incidence and the weathering grade of the asperities on wave propagation are studied. The theoretical solutions of the thin-layer interface model (TLIM) are compared with those based on the zero-thickness interface model (ZTIM) which is commonly used currently. The study concludes that the TLIM is able to represent the behavior of fractures with different types of surface roughness and weathering. (C) 2014 Elsevier B.V. All rights reserved.
WOS研究方向	Geology ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000344207200011
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3646]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Monash Univ, Dept Civil Engn
推荐引用方式 GB/T 7714	Li, J. C.,Li, H. B.,Zhao, J.. Study on wave propagation across a single rough fracture by the modified thin-layer interface model[J]. JOURNAL OF APPLIED GEOPHYSICS,2014,110:106-114.
APA	Li, J. C.,Li, H. B.,&Zhao, J..(2014).Study on wave propagation across a single rough fracture by the modified thin-layer interface model.JOURNAL OF APPLIED GEOPHYSICS,110,106-114.
MLA	Li, J. C.,et al."Study on wave propagation across a single rough fracture by the modified thin-layer interface model".JOURNAL OF APPLIED GEOPHYSICS 110(2014):106-114.