Characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadway
The high temperature and toxic gases produced by burning belt in mine are a serious threat to the miners’ safety. A full-scale fire experiment was conducted in an exercise roadway, as a basis for which a physical model was established. The spatial and temporal evolution of the environmental paramete...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23006524 |
| _version_ | 1827854882498936832 |
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| author | Lin Li Junhong Si Zongxiang Li |
| author_facet | Lin Li Junhong Si Zongxiang Li |
| author_sort | Lin Li |
| collection | DOAJ |
| description | The high temperature and toxic gases produced by burning belt in mine are a serious threat to the miners’ safety. A full-scale fire experiment was conducted in an exercise roadway, as a basis for which a physical model was established. The spatial and temporal evolution of the environmental parameters was obtained in the U-shaped working face, and the effect of wind speed on the fire parameters was studied. It was found that the smoke concentration and temperature from large to small are the downwind side of the transport roadway, working face and return airway. The structure of smoke layer near the working face is disorganized, which is related to the local turning structure of the roadway. The smoke reverse occurs later than the spread of smoke downstream of the fire area. The thickness and maximum temperature of counterflow layer decreases linearly with the increase of ventilation speed. Increasing the critical ventilation speed can control the smoke reserve and increase the risk downstream of the fire area. The harmfulness of wind speed to smoke reserve and spread in single roadway and complex network is then discussed. In addition, the influencing factors of fire evolution in confined space are put forward. |
| first_indexed | 2024-03-12T11:37:02Z |
| format | Article |
| id | doaj.art-fdc04f8d36a54867a636186c6813ea0f |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-03-12T11:37:02Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-fdc04f8d36a54867a636186c6813ea0f2023-09-01T05:01:57ZengElsevierCase Studies in Thermal Engineering2214-157X2023-09-0149103346Characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadwayLin Li0Junhong Si1Zongxiang Li2College of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, 123000, ChinaSchool of Emergency Technology and Management, North China Institute of Science and Technology, Beijing, 101601, China; Corresponding author.College of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, 123000, ChinaThe high temperature and toxic gases produced by burning belt in mine are a serious threat to the miners’ safety. A full-scale fire experiment was conducted in an exercise roadway, as a basis for which a physical model was established. The spatial and temporal evolution of the environmental parameters was obtained in the U-shaped working face, and the effect of wind speed on the fire parameters was studied. It was found that the smoke concentration and temperature from large to small are the downwind side of the transport roadway, working face and return airway. The structure of smoke layer near the working face is disorganized, which is related to the local turning structure of the roadway. The smoke reverse occurs later than the spread of smoke downstream of the fire area. The thickness and maximum temperature of counterflow layer decreases linearly with the increase of ventilation speed. Increasing the critical ventilation speed can control the smoke reserve and increase the risk downstream of the fire area. The harmfulness of wind speed to smoke reserve and spread in single roadway and complex network is then discussed. In addition, the influencing factors of fire evolution in confined space are put forward.http://www.sciencedirect.com/science/article/pii/S2214157X23006524Belt fireCoal mineMine ventilationSmoke reverseNumerical simulation |
| spellingShingle | Lin Li Junhong Si Zongxiang Li Characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadway Case Studies in Thermal Engineering Belt fire Coal mine Mine ventilation Smoke reverse Numerical simulation |
| title | Characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadway |
| title_full | Characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadway |
| title_fullStr | Characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadway |
| title_full_unstemmed | Characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadway |
| title_short | Characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadway |
| title_sort | characteristics of the spatial and temporal evolution of the environmental parameters for belt fire in underground coal mine roadway |
| topic | Belt fire Coal mine Mine ventilation Smoke reverse Numerical simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23006524 |
| work_keys_str_mv | AT linli characteristicsofthespatialandtemporalevolutionoftheenvironmentalparametersforbeltfireinundergroundcoalmineroadway AT junhongsi characteristicsofthespatialandtemporalevolutionoftheenvironmentalparametersforbeltfireinundergroundcoalmineroadway AT zongxiangli characteristicsofthespatialandtemporalevolutionoftheenvironmentalparametersforbeltfireinundergroundcoalmineroadway |