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DOI	10.1016/j.tecto.2020.228521
	Experimental study of impact of shearing velocity and effective normal stress on post-shearing permeability evolution of silica fault gouges
	Kimura S.; Noda S.; Ito T.; Katagiri J.; Kaneko H.; Minagawa H.
发表日期	2020
ISSN	00401951
卷号	789
英文摘要	Fault permeability is an important parameter for understanding the occurrence of natural hazards and evaluation of natural gas and oil reservoirs. In this study, effects of shear velocity on the permeability perpendicular to the shear zone formed after large shear displacements are revealed for silica sand. To this end, ring-shear experiments were performed for four shearing velocities under conditions of high effective normal stress. As observed, post-shear permeability values under effective normal stresses of 1 and 2 MPa demonstrated a reduction of two and one order of magnitude, respectively, along with negative velocity dependence. However, no significant difference in permeability was observed under exceeding 3 MPa. In addition, the shear-zone structure under high shear velocity and higher effective normal stress demonstrated existence of a grain-crushed zone, which closely corresponds to reductions in pore-diameter and grain size. Findings of this study indicate the instability mechanism of landslides related to groundwater movement and facilitate understanding of resource systems controlled by natural faults. © 2020 Elsevier B.V.
关键词	Particle crushing Permeability Shear velocity Silica sand Stress dependency
英文关键词	Gas hazards; Groundwater; Groundwater resources; Petroleum reservoir evaluation; Petroleum reservoirs; Shearing; Shearing machines; Silica; Silica sand; Transport properties; Velocity; Effective normal stress; Ground water movement; Instability mechanisms; Negative velocities; Permeability evolution; Shear velocities; Shear zone structures; Shearing velocity; Shear flow; effective stress; experimental study; fault gouge; grain size; permeability; pore space; sand; shear zone; silica; soil mechanics; stress field
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207790
作者单位	Research Institute of Energy Frontier, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1, Tsukisamu-Higashi, Toyohira-ku, Sapporo, 062-8517, Japan; Research Institute of Energy Frontier, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, 305-8569, Japan; National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1, Tsukisamu-Higashi, Toyohira-ku, Sapporo, 062-8517, Japan; Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, 305-8569, Japan
推荐引用方式 GB/T 7714	Kimura S.,Noda S.,Ito T.,et al. Experimental study of impact of shearing velocity and effective normal stress on post-shearing permeability evolution of silica fault gouges[J],2020,789.
APA	Kimura S.,Noda S.,Ito T.,Katagiri J.,Kaneko H.,&Minagawa H..(2020).Experimental study of impact of shearing velocity and effective normal stress on post-shearing permeability evolution of silica fault gouges.Tectonophysics,789.
MLA	Kimura S.,et al."Experimental study of impact of shearing velocity and effective normal stress on post-shearing permeability evolution of silica fault gouges".Tectonophysics 789(2020).