Investigation of Anisotropic Permeability and Porosity of CJRM considering Different Confinement Loading Pressures
An innovative method is proposed to prepare artificial columnar jointed rock masses (CJRM) with different columnar dip angles, and laboratory physical model tests are conducted to investigate anisotropic permeability and porosity characteristics of the prepared artificial CJRM. In the physical model...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/4609578 |
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| author | Zhiming Chao Guotao Ma Xiewen Hu Yuzhe Zhu |
| author_facet | Zhiming Chao Guotao Ma Xiewen Hu Yuzhe Zhu |
| author_sort | Zhiming Chao |
| collection | DOAJ |
| description | An innovative method is proposed to prepare artificial columnar jointed rock masses (CJRM) with different columnar dip angles, and laboratory physical model tests are conducted to investigate anisotropic permeability and porosity characteristics of the prepared artificial CJRM. In the physical model experiment, permeability and porosity of artificial CJRM with different columnar dip angles is measured during three times cyclic loading and unloading of confinement pressure. Based on the results of the laboratory model tests, the Equivalent Continuum Media Model was applied to analyse anisotropic permeability of CJRM. The main conclusions are summarized as follows. In the first loading phase of confinement pressure, the impacts of confinement pressure on the anisotropic permeability of artificial CJRM, porosity, and the major and minor principle permeability coefficients (PPCs) are significant, while in the following stages of confinement pressure loading and unloading, the change of them is small, with stable value. Permeability of artificial CJRM gradually increases with rise of columnar dip angle, and the permeability anisotropy of artificial CJRM under low confinement pressure is higher than that under low confinement pressure. |
| format | Article |
| id | doaj-art-62b5de95008540abba49dd57572c6318 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-62b5de95008540abba49dd57572c63182025-02-03T05:52:28ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/46095784609578Investigation of Anisotropic Permeability and Porosity of CJRM considering Different Confinement Loading PressuresZhiming Chao0Guotao Ma1Xiewen Hu2Yuzhe Zhu3Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610000, ChinaSchool of Engineering, The University of Warwick, Coventry CV4 7AL, UKFaculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610000, ChinaSchool of Foreign Languages, Renmin University of China, Beijing 100872, ChinaAn innovative method is proposed to prepare artificial columnar jointed rock masses (CJRM) with different columnar dip angles, and laboratory physical model tests are conducted to investigate anisotropic permeability and porosity characteristics of the prepared artificial CJRM. In the physical model experiment, permeability and porosity of artificial CJRM with different columnar dip angles is measured during three times cyclic loading and unloading of confinement pressure. Based on the results of the laboratory model tests, the Equivalent Continuum Media Model was applied to analyse anisotropic permeability of CJRM. The main conclusions are summarized as follows. In the first loading phase of confinement pressure, the impacts of confinement pressure on the anisotropic permeability of artificial CJRM, porosity, and the major and minor principle permeability coefficients (PPCs) are significant, while in the following stages of confinement pressure loading and unloading, the change of them is small, with stable value. Permeability of artificial CJRM gradually increases with rise of columnar dip angle, and the permeability anisotropy of artificial CJRM under low confinement pressure is higher than that under low confinement pressure.http://dx.doi.org/10.1155/2020/4609578 |
| spellingShingle | Zhiming Chao Guotao Ma Xiewen Hu Yuzhe Zhu Investigation of Anisotropic Permeability and Porosity of CJRM considering Different Confinement Loading Pressures Advances in Civil Engineering |
| title | Investigation of Anisotropic Permeability and Porosity of CJRM considering Different Confinement Loading Pressures |
| title_full | Investigation of Anisotropic Permeability and Porosity of CJRM considering Different Confinement Loading Pressures |
| title_fullStr | Investigation of Anisotropic Permeability and Porosity of CJRM considering Different Confinement Loading Pressures |
| title_full_unstemmed | Investigation of Anisotropic Permeability and Porosity of CJRM considering Different Confinement Loading Pressures |
| title_short | Investigation of Anisotropic Permeability and Porosity of CJRM considering Different Confinement Loading Pressures |
| title_sort | investigation of anisotropic permeability and porosity of cjrm considering different confinement loading pressures |
| url | http://dx.doi.org/10.1155/2020/4609578 |
| work_keys_str_mv | AT zhimingchao investigationofanisotropicpermeabilityandporosityofcjrmconsideringdifferentconfinementloadingpressures AT guotaoma investigationofanisotropicpermeabilityandporosityofcjrmconsideringdifferentconfinementloadingpressures AT xiewenhu investigationofanisotropicpermeabilityandporosityofcjrmconsideringdifferentconfinementloadingpressures AT yuzhezhu investigationofanisotropicpermeabilityandporosityofcjrmconsideringdifferentconfinementloadingpressures |