Main factors that control roadway damage when a steeply dipping coal seam crosses a fault
When the working face of a steeply dipping coal seam crosses a fault, the dynamic disturbance caused by the mining load induces fault activation, causing large deformation and failure of the roadway. In this study, a physical similarity simulation and numerical calculation method were used to determ...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-12-01
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| Series: | Geomatics, Natural Hazards & Risk |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19475705.2024.2344798 |
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| _version_ | 1846126448442605568 |
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| author | Hongwei Wang Jianqiang Jiao Yongping Wu Yuanyang Song Panshi Xie Shenghu Luo |
| author_facet | Hongwei Wang Jianqiang Jiao Yongping Wu Yuanyang Song Panshi Xie Shenghu Luo |
| author_sort | Hongwei Wang |
| collection | DOAJ |
| description | When the working face of a steeply dipping coal seam crosses a fault, the dynamic disturbance caused by the mining load induces fault activation, causing large deformation and failure of the roadway. In this study, a physical similarity simulation and numerical calculation method were used to determine the main factors that the deformation and failure of fault zone roadway and reveal the underlying mechanisms. The results show that when crosses a fault, the high static load formed by the coupling of mining stress and fault pillar stress induces mining stress-type fault activation, which leads to large deformation and damage to the roadway in the fault zone. The main controlling factors are the fault location and mining load intensity. In terms of fault location, the vertical stress concentration away from the roadway side of the fault surface was high, the principal stress deflection angle was large, and the surface deformation of the fault on the roadway left side was the greatest. In terms of mining load intensity, the deflection angle of the principal stress of the surrounding rock initially increased and then decreased, and tensile failure easily occurred near the fault surface. These results provide a reference for roadway support. |
| format | Article |
| id | doaj-art-b88c63a6130643a9976f8f833375c063 |
| institution | Kabale University |
| issn | 1947-5705 1947-5713 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj-art-b88c63a6130643a9976f8f833375c0632024-12-12T18:11:17ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132024-12-0115110.1080/19475705.2024.2344798Main factors that control roadway damage when a steeply dipping coal seam crosses a faultHongwei Wang0Jianqiang Jiao1Yongping Wu2Yuanyang Song3Panshi Xie4Shenghu Luo5School of Energy, Xi’an University of Science and Technology, Xi’an, ChinaSchool of Energy, Xi’an University of Science and Technology, Xi’an, ChinaSchool of Energy, Xi’an University of Science and Technology, Xi’an, ChinaSchool of Energy, Xi’an University of Science and Technology, Xi’an, ChinaSchool of Energy, Xi’an University of Science and Technology, Xi’an, ChinaState Key Laboratory of Green and Low-Carbon Development of Tar-Rich Coal in Western China, Xi’an University of Science and Technology, Xi’an, ChinaWhen the working face of a steeply dipping coal seam crosses a fault, the dynamic disturbance caused by the mining load induces fault activation, causing large deformation and failure of the roadway. In this study, a physical similarity simulation and numerical calculation method were used to determine the main factors that the deformation and failure of fault zone roadway and reveal the underlying mechanisms. The results show that when crosses a fault, the high static load formed by the coupling of mining stress and fault pillar stress induces mining stress-type fault activation, which leads to large deformation and damage to the roadway in the fault zone. The main controlling factors are the fault location and mining load intensity. In terms of fault location, the vertical stress concentration away from the roadway side of the fault surface was high, the principal stress deflection angle was large, and the surface deformation of the fault on the roadway left side was the greatest. In terms of mining load intensity, the deflection angle of the principal stress of the surrounding rock initially increased and then decreased, and tensile failure easily occurred near the fault surface. These results provide a reference for roadway support.https://www.tandfonline.com/doi/10.1080/19475705.2024.2344798Steeply dipping coal seamfault zonelarge deformationmining load strengthprincipal stress rotation |
| spellingShingle | Hongwei Wang Jianqiang Jiao Yongping Wu Yuanyang Song Panshi Xie Shenghu Luo Main factors that control roadway damage when a steeply dipping coal seam crosses a fault Geomatics, Natural Hazards & Risk Steeply dipping coal seam fault zone large deformation mining load strength principal stress rotation |
| title | Main factors that control roadway damage when a steeply dipping coal seam crosses a fault |
| title_full | Main factors that control roadway damage when a steeply dipping coal seam crosses a fault |
| title_fullStr | Main factors that control roadway damage when a steeply dipping coal seam crosses a fault |
| title_full_unstemmed | Main factors that control roadway damage when a steeply dipping coal seam crosses a fault |
| title_short | Main factors that control roadway damage when a steeply dipping coal seam crosses a fault |
| title_sort | main factors that control roadway damage when a steeply dipping coal seam crosses a fault |
| topic | Steeply dipping coal seam fault zone large deformation mining load strength principal stress rotation |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2024.2344798 |
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