Numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadway
In order to investigate the influence of ventilation velocity on fire smoke distribution in bifurcated roadway, the computational fluid dynamics (CFD) numerical method was adopted to simulate the fires located in upstream of main-roadway. The influence of ventilation velocity on the length of smoke...
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Editorial Office of Safety in Coal Mines
2025-01-01
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| Series: | Meikuang Anquan |
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| Online Access: | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231845 |
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| author | Cui DING |
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| description | In order to investigate the influence of ventilation velocity on fire smoke distribution in bifurcated roadway, the computational fluid dynamics (CFD) numerical method was adopted to simulate the fires located in upstream of main-roadway. The influence of ventilation velocity on the length of smoke backflow and the temperature distribution and CO mass concentration distribution in main-roadway and sub-roadway were analyzed. The results showed that the length of smoke backflow decreased linearly as the increasing of ventilation velocity. The average temperature at the height of breathing zone in sub-roadway was little higher than that in main-roadway downstream under different ventilation velocity condition, and the biggest temperature difference is 8 ℃. The relationship between ventilation velocity and the average temperature at the height of breathing zone in main-roadway downstream and in sub-roadway fitted in power function trend. The CO mass concentration difference between main-roadway downstream and sub-roadway decreased gradually as the increasing of ventilation velocity, and the smallest mass concentration difference was 9.25 mg/m3. The relationship between ventilation velocity and the CO average mass concentration at the height of breathing zone in main-roadway downstream and in sub-roadway fitted in power function trend. When the ventilation velocity is 1-3 m/s, the workers in the sub-roadway are less susceptible to fire smoke and toxic gases, and when the ventilation velocity is 1.5-3 m/s, the workers in the main-roadway downstream are less susceptible to fire smoke and toxic gases |
| format | Article |
| id | doaj-art-4d00a7e4043c40b89a16a7188b57151b |
| institution | Kabale University |
| issn | 1003-496X |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Office of Safety in Coal Mines |
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| series | Meikuang Anquan |
| spelling | doaj-art-4d00a7e4043c40b89a16a7188b57151b2025-01-15T04:32:08ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2025-01-01561939910.13347/j.cnki.mkaq.20231845cMKAQ20231845Numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadwayCui DING0School of Safety Engineering, China University of Labor Relations, Beijing 100048, ChinaIn order to investigate the influence of ventilation velocity on fire smoke distribution in bifurcated roadway, the computational fluid dynamics (CFD) numerical method was adopted to simulate the fires located in upstream of main-roadway. The influence of ventilation velocity on the length of smoke backflow and the temperature distribution and CO mass concentration distribution in main-roadway and sub-roadway were analyzed. The results showed that the length of smoke backflow decreased linearly as the increasing of ventilation velocity. The average temperature at the height of breathing zone in sub-roadway was little higher than that in main-roadway downstream under different ventilation velocity condition, and the biggest temperature difference is 8 ℃. The relationship between ventilation velocity and the average temperature at the height of breathing zone in main-roadway downstream and in sub-roadway fitted in power function trend. The CO mass concentration difference between main-roadway downstream and sub-roadway decreased gradually as the increasing of ventilation velocity, and the smallest mass concentration difference was 9.25 mg/m3. The relationship between ventilation velocity and the CO average mass concentration at the height of breathing zone in main-roadway downstream and in sub-roadway fitted in power function trend. When the ventilation velocity is 1-3 m/s, the workers in the sub-roadway are less susceptible to fire smoke and toxic gases, and when the ventilation velocity is 1.5-3 m/s, the workers in the main-roadway downstream are less susceptible to fire smoke and toxic gaseshttps://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231845mine firebifurcated roadwayventilation velocitysmoke distributionnumerical simulation |
| spellingShingle | Cui DING Numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadway Meikuang Anquan mine fire bifurcated roadway ventilation velocity smoke distribution numerical simulation |
| title | Numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadway |
| title_full | Numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadway |
| title_fullStr | Numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadway |
| title_full_unstemmed | Numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadway |
| title_short | Numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadway |
| title_sort | numerical research on the influence of ventilation velocity on fire smoke distribution in bifurcated roadway |
| topic | mine fire bifurcated roadway ventilation velocity smoke distribution numerical simulation |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20231845 |
| work_keys_str_mv | AT cuiding numericalresearchontheinfluenceofventilationvelocityonfiresmokedistributioninbifurcatedroadway |