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DOI | 10.1029/2018WR023189 |
Relationship Between the Orientation of Maximum Permeability and Intermediate Principal Stress in Fractured Rocks | |
Lang, Philipp S.1,2; Paluszny, Adriana1; Nejati, Morteza3; Zimmerman, Robert W.1 | |
2018-11-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:11页码:8734-8755 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Switzerland |
英文摘要 | Flow and transport properties of fractured rock masses are a function of geometrical structures across many scales. These structures result from physical processes and states and are highly anisotropic in nature. Fracture surfaces often tend to be shifted with respect to each other, which is generally a result of stress-induced displacements. This shift controls the fracture's transmissivity through the pore space that forms from the created mismatch between the surfaces. This transmissivity is anisotropic and greater in the direction perpendicular to the displacement. A contact mechanics-based, first-principle numerical approach is developed to investigate the effects that this shear-induced transmissivity anisotropy has on the overall permeability of a fractured rock mass. Deformation of the rock and contact between fracture surfaces is computed in three dimensions at two scales. At the rock mass scale, fractures are treated as planar discontinuities along which displacements and tractions are resolved. Contact between the individual rough fracture surfaces is solved for each fracture at the small scale to find the stiffness and transmissivity that result from shear-induced dilation and elastic compression. Results show that, given isotropic fracture networks, the direction of maximum permeability of a fractured rock mass tends to be aligned with the direction of the intermediate principal stress. This reflects the fact that fractures have the most pronounced slip in the plane of the maximum and minimum principal stresses, and for individual fractures transmissivity is most pronounced in the direction perpendicular to this slip. |
英文关键词 | permeability principal stress fracture multiscale roughness anisotropy |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000453369400011 |
WOS关键词 | SELF-AFFINE SURFACES ; FLUID-FLOW ; NUMERICAL-SIMULATION ; CONTACT MECHANICS ; RUBBER-FRICTION ; MODEL ; APERTURE ; STIFFNESS ; TENSOR ; LENGTH |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21598 |
专题 | 资源环境科学 |
作者单位 | 1.Imperial Coll London, Dept Earth Sci & Engn, London, England; 2.Schlumberger Abingdon Technol Ctr, Oxford, England; 3.Swiss Fed Inst Technol, Dept Earth Sci, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Lang, Philipp S.,Paluszny, Adriana,Nejati, Morteza,et al. Relationship Between the Orientation of Maximum Permeability and Intermediate Principal Stress in Fractured Rocks[J]. WATER RESOURCES RESEARCH,2018,54(11):8734-8755. |
APA | Lang, Philipp S.,Paluszny, Adriana,Nejati, Morteza,&Zimmerman, Robert W..(2018).Relationship Between the Orientation of Maximum Permeability and Intermediate Principal Stress in Fractured Rocks.WATER RESOURCES RESEARCH,54(11),8734-8755. |
MLA | Lang, Philipp S.,et al."Relationship Between the Orientation of Maximum Permeability and Intermediate Principal Stress in Fractured Rocks".WATER RESOURCES RESEARCH 54.11(2018):8734-8755. |
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