globalchange  > 气候变化与战略
DOI: 10.1016/j.tecto.2020.228521
论文题名:
Experimental study of impact of shearing velocity and effective normal stress on post-shearing permeability evolution of silica fault gouges
作者: Kimura S.; Noda S.; Ito T.; Katagiri J.; Kaneko H.; Minagawa H.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 789
语种: 英语
中文关键词: 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170623
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Tectonophysics,2020-01-01,789
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