Instability mechanism of composite structure involved coal pillar and key strata induced by multi-face mining
The complex instability mechanism of large-space stope structure formed by multi-face mining poses significant risk of mining-induced seismicity. Aiming at the composite structure of a mine in Shanxi, China, a mechanical model is established and the instability mechanism are investigated. The instab...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-12-01
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| Series: | Geomatics, Natural Hazards & Risk |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19475705.2025.2453085 |
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| author | He Ren Lianpeng Dai Yishan Pan Aiwen Wang Yonghui Xiao |
| author_facet | He Ren Lianpeng Dai Yishan Pan Aiwen Wang Yonghui Xiao |
| author_sort | He Ren |
| collection | DOAJ |
| description | The complex instability mechanism of large-space stope structure formed by multi-face mining poses significant risk of mining-induced seismicity. Aiming at the composite structure of a mine in Shanxi, China, a mechanical model is established and the instability mechanism are investigated. The instability condition was explored, and the instability process was simulated. The theoretical results were verified with the field monitoring, and the main influencing factors of this instability were analyzed. The results indicate that in large-space stope, the coal pillar, which serves as the primary load-bearing structure, interacts with the key strata. Individual instability could induce interactive instability, resulting in the instability of composite structure. The stiffness of coal, the width of coal pillar and the strength of key strata rock mass have significant effects on the stability of composite structure. Taking measures against these factors can prevent the instability of composite structure from the perspective of preventing the instability of coal pillar and reducing the energy release of key strata instability. The results could contribute to the further exploration of the stability of large-space stope. |
| format | Article |
| id | doaj-art-31f8212def3641c5a381b30cef357680 |
| institution | Kabale University |
| issn | 1947-5705 1947-5713 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj-art-31f8212def3641c5a381b30cef3576802025-01-19T16:44:39ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132025-12-0116110.1080/19475705.2025.2453085Instability mechanism of composite structure involved coal pillar and key strata induced by multi-face miningHe Ren0Lianpeng Dai1Yishan Pan2Aiwen Wang3Yonghui Xiao4Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang, People’s Republic of ChinaInstitute of Disaster Rock Mechanics, Liaoning University, Shenyang, People’s Republic of ChinaKey Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang, People’s Republic of ChinaInstitute of Disaster Rock Mechanics, Liaoning University, Shenyang, People’s Republic of ChinaSchool of Physics, Liaoning University, Shenyang, People’s Republic of ChinaThe complex instability mechanism of large-space stope structure formed by multi-face mining poses significant risk of mining-induced seismicity. Aiming at the composite structure of a mine in Shanxi, China, a mechanical model is established and the instability mechanism are investigated. The instability condition was explored, and the instability process was simulated. The theoretical results were verified with the field monitoring, and the main influencing factors of this instability were analyzed. The results indicate that in large-space stope, the coal pillar, which serves as the primary load-bearing structure, interacts with the key strata. Individual instability could induce interactive instability, resulting in the instability of composite structure. The stiffness of coal, the width of coal pillar and the strength of key strata rock mass have significant effects on the stability of composite structure. Taking measures against these factors can prevent the instability of composite structure from the perspective of preventing the instability of coal pillar and reducing the energy release of key strata instability. The results could contribute to the further exploration of the stability of large-space stope.https://www.tandfonline.com/doi/10.1080/19475705.2025.2453085Large-space stopemining-induced seismicitykey stratacoal pillar |
| spellingShingle | He Ren Lianpeng Dai Yishan Pan Aiwen Wang Yonghui Xiao Instability mechanism of composite structure involved coal pillar and key strata induced by multi-face mining Geomatics, Natural Hazards & Risk Large-space stope mining-induced seismicity key strata coal pillar |
| title | Instability mechanism of composite structure involved coal pillar and key strata induced by multi-face mining |
| title_full | Instability mechanism of composite structure involved coal pillar and key strata induced by multi-face mining |
| title_fullStr | Instability mechanism of composite structure involved coal pillar and key strata induced by multi-face mining |
| title_full_unstemmed | Instability mechanism of composite structure involved coal pillar and key strata induced by multi-face mining |
| title_short | Instability mechanism of composite structure involved coal pillar and key strata induced by multi-face mining |
| title_sort | instability mechanism of composite structure involved coal pillar and key strata induced by multi face mining |
| topic | Large-space stope mining-induced seismicity key strata coal pillar |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2025.2453085 |
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