The role of advance rate in mining-induced stress and microseismic behavior during longwall face advance
Coal bursts are one of the most severe hazards in coal mining, yet the mechanisms linking advance rate, stress redistribution, and coal burst risks remain unclear. This study investigates these mechanisms using the Universal Distinct Element Code (UDEC) under specific geological conditions and varyi...
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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/10.1080/19475705.2025.2515536 |
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| author | Jiaxin Zhuang Zonglong Mu Piotr Małkowski Wu Cai Siyuan Gong Anye Cao Junjie Bai Jinglong Cao |
| author_facet | Jiaxin Zhuang Zonglong Mu Piotr Małkowski Wu Cai Siyuan Gong Anye Cao Junjie Bai Jinglong Cao |
| author_sort | Jiaxin Zhuang |
| collection | DOAJ |
| description | Coal bursts are one of the most severe hazards in coal mining, yet the mechanisms linking advance rate, stress redistribution, and coal burst risks remain unclear. This study investigates these mechanisms using the Universal Distinct Element Code (UDEC) under specific geological conditions and varying advance rates, with a new method to model the evolution of microseismic (MS) events. Results show that increasing the advance rate leads to a faster transfer of stress from the roof to the coal seam, causing a larger change in the direction of the maximum principal stress. Consequently, the range of high-stress zones expands, and the peak abutment stress increases. In the model, the MS events mainly show a W-shaped distribution, with 103 J events dominating during initial roof movement and 104 J events during large-scale movements. An optimal advance rate of 6 m/d is identified. Exceeding this rate, such as at 8 m/d, increases the risk of coal bursts due to higher abutment stress and frequent high-energy MS events. Hydraulic fracturing can help mitigate this risk by addressing these high-energy MS events and the peak static loads caused by rapid advance rates. |
| format | Article |
| id | doaj-art-2c0e11ec04d243f3bcad9bf6a097de24 |
| 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-2c0e11ec04d243f3bcad9bf6a097de242025-08-20T03:44:50ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132025-12-0116110.1080/19475705.2025.2515536The role of advance rate in mining-induced stress and microseismic behavior during longwall face advanceJiaxin Zhuang0Zonglong Mu1Piotr Małkowski2Wu Cai3Siyuan Gong4Anye Cao5Junjie Bai6Jinglong Cao7School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou, Jiangsu, ChinaDepartment of Geomechanics, Civil Engineering and Geotechnics, Faculty of Civil ngineering and Resource Management, AGH University of Science and Technology, Krakow, PolandJiangsu Engineering Laboratory of Mine Earthquake Monitoring and Prevention, Xuzhou, Jiangsu, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou, Jiangsu, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou, Jiangsu, ChinaWushen County Mengda Mining Industry Co, Ltd., Wushen County, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou, Jiangsu, ChinaCoal bursts are one of the most severe hazards in coal mining, yet the mechanisms linking advance rate, stress redistribution, and coal burst risks remain unclear. This study investigates these mechanisms using the Universal Distinct Element Code (UDEC) under specific geological conditions and varying advance rates, with a new method to model the evolution of microseismic (MS) events. Results show that increasing the advance rate leads to a faster transfer of stress from the roof to the coal seam, causing a larger change in the direction of the maximum principal stress. Consequently, the range of high-stress zones expands, and the peak abutment stress increases. In the model, the MS events mainly show a W-shaped distribution, with 103 J events dominating during initial roof movement and 104 J events during large-scale movements. An optimal advance rate of 6 m/d is identified. Exceeding this rate, such as at 8 m/d, increases the risk of coal bursts due to higher abutment stress and frequent high-energy MS events. Hydraulic fracturing can help mitigate this risk by addressing these high-energy MS events and the peak static loads caused by rapid advance rates.https://www.tandfonline.com/doi/10.1080/19475705.2025.2515536Advance ratemicroseismic eventsabutment stresscoal bursthydraulic fracturing |
| spellingShingle | Jiaxin Zhuang Zonglong Mu Piotr Małkowski Wu Cai Siyuan Gong Anye Cao Junjie Bai Jinglong Cao The role of advance rate in mining-induced stress and microseismic behavior during longwall face advance Geomatics, Natural Hazards & Risk Advance rate microseismic events abutment stress coal burst hydraulic fracturing |
| title | The role of advance rate in mining-induced stress and microseismic behavior during longwall face advance |
| title_full | The role of advance rate in mining-induced stress and microseismic behavior during longwall face advance |
| title_fullStr | The role of advance rate in mining-induced stress and microseismic behavior during longwall face advance |
| title_full_unstemmed | The role of advance rate in mining-induced stress and microseismic behavior during longwall face advance |
| title_short | The role of advance rate in mining-induced stress and microseismic behavior during longwall face advance |
| title_sort | role of advance rate in mining induced stress and microseismic behavior during longwall face advance |
| topic | Advance rate microseismic events abutment stress coal burst hydraulic fracturing |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2025.2515536 |
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