Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining Method
Highwall mining, which is referred to the technique of extracting coal from the bottom of an exposed highwall, features safety, efficiency, and economy. According to existing highwall mining methods, the mining sequence has a great influence on highwall stability. Based on a highwall mining project...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/8864339 |
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| author | Jing Huang Fanbao Meng Ge Wang Yingkui Wu Jinhao Wen |
| author_facet | Jing Huang Fanbao Meng Ge Wang Yingkui Wu Jinhao Wen |
| author_sort | Jing Huang |
| collection | DOAJ |
| description | Highwall mining, which is referred to the technique of extracting coal from the bottom of an exposed highwall, features safety, efficiency, and economy. According to existing highwall mining methods, the mining sequence has a great influence on highwall stability. Based on a highwall mining project in Australia, this study adopted the FLAC3D numerical simulation method to investigate the stability of coal pillars with different mining sequences. The results show that different mining sequences of boreholes exert a great effect on highwall stability. Compared with sequential mining, the skip mining method achieves higher speed of highwall stabilization and smaller plastic zone of coal pillar with its maximum strength decreasing by 12%. By adjusting the mining sequence scientifically, the coal pillar failure and roof collapse caused by the deviation of mining angle can be avoided. The results may provide a new angle for the studies on the coal pillar layout and stability design in highwall mining. |
| format | Article |
| id | doaj-art-d579ffad4c98410d8329bb70b159a09e |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-d579ffad4c98410d8329bb70b159a09e2025-02-03T00:58:50ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/88643398864339Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining MethodJing Huang0Fanbao Meng1Ge Wang2Yingkui Wu3Jinhao Wen4College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, Shandong Province 266590, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, Shandong Province 266590, ChinaTaian Taishuo Strata Control Technology Co., Ltd, Taian 271000, ChinaTaian Taishuo Strata Control Technology Co., Ltd, Taian 271000, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaHighwall mining, which is referred to the technique of extracting coal from the bottom of an exposed highwall, features safety, efficiency, and economy. According to existing highwall mining methods, the mining sequence has a great influence on highwall stability. Based on a highwall mining project in Australia, this study adopted the FLAC3D numerical simulation method to investigate the stability of coal pillars with different mining sequences. The results show that different mining sequences of boreholes exert a great effect on highwall stability. Compared with sequential mining, the skip mining method achieves higher speed of highwall stabilization and smaller plastic zone of coal pillar with its maximum strength decreasing by 12%. By adjusting the mining sequence scientifically, the coal pillar failure and roof collapse caused by the deviation of mining angle can be avoided. The results may provide a new angle for the studies on the coal pillar layout and stability design in highwall mining.http://dx.doi.org/10.1155/2021/8864339 |
| spellingShingle | Jing Huang Fanbao Meng Ge Wang Yingkui Wu Jinhao Wen Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining Method Geofluids |
| title | Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining Method |
| title_full | Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining Method |
| title_fullStr | Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining Method |
| title_full_unstemmed | Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining Method |
| title_short | Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining Method |
| title_sort | simulation research for the influence of mining sequence on coal pillar stability under highwall mining method |
| url | http://dx.doi.org/10.1155/2021/8864339 |
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