Effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway: A numerical study
Sealing strategy is widely employed in coal mine fire extinguishing. To investigate the effects of sealing strategy on the temperature distribution, smoke back-layering length (SB-LL), and self-extinction time, the Fire Dynamics Simulator (FDS) is used to simulate the inclined roadway fires with the...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-08-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25005052 |
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| author | Ruizhi Guo Li Ma Jing Fan Pengyu Zhang Wenbo Gao Yuheng Jiang |
| author_facet | Ruizhi Guo Li Ma Jing Fan Pengyu Zhang Wenbo Gao Yuheng Jiang |
| author_sort | Ruizhi Guo |
| collection | DOAJ |
| description | Sealing strategy is widely employed in coal mine fire extinguishing. To investigate the effects of sealing strategy on the temperature distribution, smoke back-layering length (SB-LL), and self-extinction time, the Fire Dynamics Simulator (FDS) is used to simulate the inclined roadway fires with the heat release rate (HRR) of 4 MW, roadway slopes (0°, 5°, 10°, and 20°) and sealing ratios (0 %–100 %). The relationship between the maximum temperature beneath the ceiling (TC) and sealing ratio (θ) and roadway slope (α) is analyzed by the dimensionless method. The results show that as the roadway slope increases, the maximum TC of the roadway fire decreases and its position continues to shift downstream, and the SB-LL becomes shorter. For small roadway slope, the weak stack effect is insufficient to stop smoke backflow. As the sealing ratio increases, the SB-LL and the maximum TC rise significantly, and the position continues to move to the fire source. For inclined roadway fires, the fire self-extinguishing requires a 100 % sealing ratio, and the self-extinction time decreases with the increase of the roadway slope. This research has important theoretical and practical significance for the control of mine roadway fires. |
| format | Article |
| id | doaj-art-4b7d68c0208249b1bb3a3a4cb44eb4f9 |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-4b7d68c0208249b1bb3a3a4cb44eb4f92025-08-20T01:51:16ZengElsevierCase Studies in Thermal Engineering2214-157X2025-08-017210624510.1016/j.csite.2025.106245Effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway: A numerical studyRuizhi Guo0Li Ma1Jing Fan2Pengyu Zhang3Wenbo Gao4Yuheng Jiang5School of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an, 710054, China; Corresponding author. School of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.School of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an, 710054, China; Corresponding author. School of Safety science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.School of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an, 710054, ChinaSchool of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an, 710054, ChinaSchool of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an, 710054, ChinaSchool of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an, 710054, ChinaSealing strategy is widely employed in coal mine fire extinguishing. To investigate the effects of sealing strategy on the temperature distribution, smoke back-layering length (SB-LL), and self-extinction time, the Fire Dynamics Simulator (FDS) is used to simulate the inclined roadway fires with the heat release rate (HRR) of 4 MW, roadway slopes (0°, 5°, 10°, and 20°) and sealing ratios (0 %–100 %). The relationship between the maximum temperature beneath the ceiling (TC) and sealing ratio (θ) and roadway slope (α) is analyzed by the dimensionless method. The results show that as the roadway slope increases, the maximum TC of the roadway fire decreases and its position continues to shift downstream, and the SB-LL becomes shorter. For small roadway slope, the weak stack effect is insufficient to stop smoke backflow. As the sealing ratio increases, the SB-LL and the maximum TC rise significantly, and the position continues to move to the fire source. For inclined roadway fires, the fire self-extinguishing requires a 100 % sealing ratio, and the self-extinction time decreases with the increase of the roadway slope. This research has important theoretical and practical significance for the control of mine roadway fires.http://www.sciencedirect.com/science/article/pii/S2214157X25005052Inclined roadway fireNumerical simulationSealing ratioSmoke back-layering lengthTemperature distribution |
| spellingShingle | Ruizhi Guo Li Ma Jing Fan Pengyu Zhang Wenbo Gao Yuheng Jiang Effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway: A numerical study Case Studies in Thermal Engineering Inclined roadway fire Numerical simulation Sealing ratio Smoke back-layering length Temperature distribution |
| title | Effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway: A numerical study |
| title_full | Effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway: A numerical study |
| title_fullStr | Effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway: A numerical study |
| title_full_unstemmed | Effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway: A numerical study |
| title_short | Effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway: A numerical study |
| title_sort | effect of sealing strategy on the temperature distribution and smoke spread behavior in inclined mine roadway a numerical study |
| topic | Inclined roadway fire Numerical simulation Sealing ratio Smoke back-layering length Temperature distribution |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25005052 |
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