| Anisotropic Variation Law of Rock Permeability with the Burial Depth of Limestone |
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| 作者姓名： | TIAN Kaiming WAN Li and TIAN Jiping |
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| 作者单位： | TIAN Kaiming，WAN Li and TIAN Jiping Department of Water Resources and Environmental Science，China University of Geosciences，27 Xueyuan Road，Beijing 100083，Department of Computer Sciences，Guangzhou University，Guangzhou，Guangdong 510091 |
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| 摘 要： | Permeability tensors of both macrofracture and microfracture systems were measured progressively along the depth of limestone formations at severed sites. It was found that the principal permeability values KX, Ky and Kz in these permeability tensors all decrease simultaneously and logarithmically with depth. However, the limestone aquifers are composed of an upper region where the larger permeability ellipsoid is upright or prolate and characterized by Kz>Kx and Kz>Ky, a transitional zone, and a lower zone whose smaller permeability ellipsoid is horizontal or oblate and characterized by KZ
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Anisotropic Variation Law of Rock Permeability with the Burial Depth of Limestone |
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| Authors: | TIAN Kaiming WAN Li and TIAN Jiping |
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| Institution: | TIAN Kaiming,WAN Li and TIAN Jiping Department of Water Resources and Environmental Science,China University of Geosciences,Xueyuan Roa,Beijing,Department of Computer Sciences,Guangzhou University,Guangzhou,Guangdong |
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| Abstract: | Permeability tensors of both macrofracture and microfracture systems were measured progressively along the depth of limestone formations at severed sites. It was found that the principal permeability values KX, Ky and Kz in these permeability tensors all decrease simultaneously and logarithmically with depth. However, the limestone aquifers are composed of an upper region where the larger permeability ellipsoid is upright or prolate and characterized by Kz>Kx and Kz>Ky, a transitional zone, and a lower zone whose smaller permeability ellipsoid is horizontal or oblate and characterized by KZ
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| Keywords: | macrofracture system microfracture system permeability tensor permeability ellipsoid |
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