Risk assessment and mechanism of rock burst for deep soft coal roadways
Abstract The occurrence of rock burst is related to the physical properties of coal-bearing strata. Under the same mining conditions, the excavation of soft coal seams at 1000 m or deeper has a lower risk of rock burst. The characteristics of rock burst in soft coal seams include a small impact infl...
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| Format: | Article |
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-91619-3 |
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| author | Xinyuan Tian Linming Dou Shun Hu Xiaotao Ma Fangzhou Lu |
| author_facet | Xinyuan Tian Linming Dou Shun Hu Xiaotao Ma Fangzhou Lu |
| author_sort | Xinyuan Tian |
| collection | DOAJ |
| description | Abstract The occurrence of rock burst is related to the physical properties of coal-bearing strata. Under the same mining conditions, the excavation of soft coal seams at 1000 m or deeper has a lower risk of rock burst. The characteristics of rock burst in soft coal seams include a small impact influence range, large roadway deformation, and serious damage to roadway supporting components. This study examines the stress evolution and deformation response of deep and soft coal seams during mining, proposes the impact hazard factor on the basis of numerical simulation results, which takes into account the mining stress and the in-situ stress, substantiates that rock burst in a deep, soft coal seam is unlikely to occur in the absence of dynamic load. Concurrently, a static load model of the roadway surrounding rock is established, and in conjunction with the characteristics of a soft coal structure with poor integrity and low strength, the impact type of roadway is determined as the ‘high static load + low dynamic load’ type. |
| format | Article |
| id | doaj-art-8b7d0b7e32b445e085bc1f8dba8c9870 |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-8b7d0b7e32b445e085bc1f8dba8c98702025-08-20T02:16:48ZengNature PortfolioScientific Reports2045-23222025-02-0115111610.1038/s41598-025-91619-3Risk assessment and mechanism of rock burst for deep soft coal roadwaysXinyuan Tian0Linming Dou1Shun Hu2Xiaotao Ma3Fangzhou Lu4School of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologySchool of Mines, China University of Mining and TechnologyAbstract The occurrence of rock burst is related to the physical properties of coal-bearing strata. Under the same mining conditions, the excavation of soft coal seams at 1000 m or deeper has a lower risk of rock burst. The characteristics of rock burst in soft coal seams include a small impact influence range, large roadway deformation, and serious damage to roadway supporting components. This study examines the stress evolution and deformation response of deep and soft coal seams during mining, proposes the impact hazard factor on the basis of numerical simulation results, which takes into account the mining stress and the in-situ stress, substantiates that rock burst in a deep, soft coal seam is unlikely to occur in the absence of dynamic load. Concurrently, a static load model of the roadway surrounding rock is established, and in conjunction with the characteristics of a soft coal structure with poor integrity and low strength, the impact type of roadway is determined as the ‘high static load + low dynamic load’ type.https://doi.org/10.1038/s41598-025-91619-3Rock burstSoft coalDeep miningRisk assessmentDynamic and static load superposition |
| spellingShingle | Xinyuan Tian Linming Dou Shun Hu Xiaotao Ma Fangzhou Lu Risk assessment and mechanism of rock burst for deep soft coal roadways Scientific Reports Rock burst Soft coal Deep mining Risk assessment Dynamic and static load superposition |
| title | Risk assessment and mechanism of rock burst for deep soft coal roadways |
| title_full | Risk assessment and mechanism of rock burst for deep soft coal roadways |
| title_fullStr | Risk assessment and mechanism of rock burst for deep soft coal roadways |
| title_full_unstemmed | Risk assessment and mechanism of rock burst for deep soft coal roadways |
| title_short | Risk assessment and mechanism of rock burst for deep soft coal roadways |
| title_sort | risk assessment and mechanism of rock burst for deep soft coal roadways |
| topic | Rock burst Soft coal Deep mining Risk assessment Dynamic and static load superposition |
| url | https://doi.org/10.1038/s41598-025-91619-3 |
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