Permeability Experiment of Fractured Rock with Rough Surfaces under Different Stress Conditions
To investigate the permeability changes and the mechanisms of fractured rock under dynamic and static stresses produced by earthquakes, permeability experiments on fractured rock with rough surfaces under axial dynamic and static stresses were conducted on the MTS815 Rock Mechanics Testing System. S...
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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: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/9030484 |
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| _version_ | 1832547143780401152 |
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| author | Zilong Zhou Jing Zhang Xin Cai Shanyong Wang Xueming Du Haizhi Zang |
| author_facet | Zilong Zhou Jing Zhang Xin Cai Shanyong Wang Xueming Du Haizhi Zang |
| author_sort | Zilong Zhou |
| collection | DOAJ |
| description | To investigate the permeability changes and the mechanisms of fractured rock under dynamic and static stresses produced by earthquakes, permeability experiments on fractured rock with rough surfaces under axial dynamic and static stresses were conducted on the MTS815 Rock Mechanics Testing System. Surface asperity was investigated by scanning the specimen surfaces before and after testing. The results show that the roughness of fracture surface has a great influence on the permeability when the axial displacement is not enough to cause the fracture rock to slip. Moreover, the rougher fracture surface leads to severer surface damage as indicated by the more gouge productions. The accumulation of gouge materials on larger roughness fracture surfaces causes a slow drop in permeability. The fracture surfaces experience larger degradations, but it has small weights of gouge materials on fracture surface after testing under axial dynamic stress. The reason is that the gouge material transport and mobilization tend to occur in process of dynamic loading. Therefore, the permeability drops of axial dynamic stress are larger than those of axial static stress. |
| format | Article |
| id | doaj-art-48747adab3854048a15ef993055157e6 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-48747adab3854048a15ef993055157e62025-02-03T06:45:58ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/90304849030484Permeability Experiment of Fractured Rock with Rough Surfaces under Different Stress ConditionsZilong Zhou0Jing Zhang1Xin Cai2Shanyong Wang3Xueming Du4Haizhi Zang5School of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaFaculty of Engineering and Built Environment, ARC Centre of Excellence for Geotechnical Science and Engineering, The University of Newcastle, Callaghan 2308, AustraliaCollege of Water Conservancy and Environmental Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaTo investigate the permeability changes and the mechanisms of fractured rock under dynamic and static stresses produced by earthquakes, permeability experiments on fractured rock with rough surfaces under axial dynamic and static stresses were conducted on the MTS815 Rock Mechanics Testing System. Surface asperity was investigated by scanning the specimen surfaces before and after testing. The results show that the roughness of fracture surface has a great influence on the permeability when the axial displacement is not enough to cause the fracture rock to slip. Moreover, the rougher fracture surface leads to severer surface damage as indicated by the more gouge productions. The accumulation of gouge materials on larger roughness fracture surfaces causes a slow drop in permeability. The fracture surfaces experience larger degradations, but it has small weights of gouge materials on fracture surface after testing under axial dynamic stress. The reason is that the gouge material transport and mobilization tend to occur in process of dynamic loading. Therefore, the permeability drops of axial dynamic stress are larger than those of axial static stress.http://dx.doi.org/10.1155/2020/9030484 |
| spellingShingle | Zilong Zhou Jing Zhang Xin Cai Shanyong Wang Xueming Du Haizhi Zang Permeability Experiment of Fractured Rock with Rough Surfaces under Different Stress Conditions Geofluids |
| title | Permeability Experiment of Fractured Rock with Rough Surfaces under Different Stress Conditions |
| title_full | Permeability Experiment of Fractured Rock with Rough Surfaces under Different Stress Conditions |
| title_fullStr | Permeability Experiment of Fractured Rock with Rough Surfaces under Different Stress Conditions |
| title_full_unstemmed | Permeability Experiment of Fractured Rock with Rough Surfaces under Different Stress Conditions |
| title_short | Permeability Experiment of Fractured Rock with Rough Surfaces under Different Stress Conditions |
| title_sort | permeability experiment of fractured rock with rough surfaces under different stress conditions |
| url | http://dx.doi.org/10.1155/2020/9030484 |
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