Numerical Investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high-gas mines
As coal mining operations continue to deepen, the frequency of coal spontaneous combustion (CSC) and gas explosion disasters in high-gas mines is increasing. Understanding the distribution patterns of CSC and gas compound disaster zones in the gob during the extraction process is crucial for reducin...
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Elsevier
2024-11-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24013728 |
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| author | Li Ma Peng-yu Zhang Xiao-kun Chen Yan-peng He Gao-ming Wei Jing Fan |
| author_facet | Li Ma Peng-yu Zhang Xiao-kun Chen Yan-peng He Gao-ming Wei Jing Fan |
| author_sort | Li Ma |
| collection | DOAJ |
| description | As coal mining operations continue to deepen, the frequency of coal spontaneous combustion (CSC) and gas explosion disasters in high-gas mines is increasing. Understanding the distribution patterns of CSC and gas compound disaster zones in the gob during the extraction process is crucial for reducing the risks of combustion and explosion. This study focuses on the 201 working face of the Shuanglong Coal Mine, where a multi-physical field coupling model of pressure, temperature, gas seepage, and diffusion was established to investigate the evolution characteristics of compound disaster zones and propose corresponding prevention and control measures. The results demonstrate that the area with the most severe composite hazard is mainly located at the return roadway side, extending to the middle of the gob. With increased ventilation volume and advance rate, the area of the CSC and gas coupling hazard zone expands continuously. By implementing measures such as brattice cloth and nitrogen injection, the areas of spontaneous combustion and CH4 explosion zones were reduced by 53.6 % and 49.5 %, respectively, effectively controlling the extent of the compound disaster zone and eliminating the risk of gas explosions. |
| format | Article |
| id | doaj-art-128236f99c3d4c689f3b4a82139587f9 |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-128236f99c3d4c689f3b4a82139587f92024-11-14T04:32:03ZengElsevierCase Studies in Thermal Engineering2214-157X2024-11-0163105341Numerical Investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high-gas minesLi Ma0Peng-yu Zhang1Xiao-kun Chen2Yan-peng He3Gao-ming Wei4Jing Fan5School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR ChinaSchool of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Corresponding author. School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi 710054, PR China.School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR ChinaSchool of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Post-doctoral Research Center of Mining Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR ChinaSchool of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Post-doctoral Research Center of Mining Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR ChinaSchool of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR China; Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd., Xi'an, Shaanxi, 710054, PR ChinaAs coal mining operations continue to deepen, the frequency of coal spontaneous combustion (CSC) and gas explosion disasters in high-gas mines is increasing. Understanding the distribution patterns of CSC and gas compound disaster zones in the gob during the extraction process is crucial for reducing the risks of combustion and explosion. This study focuses on the 201 working face of the Shuanglong Coal Mine, where a multi-physical field coupling model of pressure, temperature, gas seepage, and diffusion was established to investigate the evolution characteristics of compound disaster zones and propose corresponding prevention and control measures. The results demonstrate that the area with the most severe composite hazard is mainly located at the return roadway side, extending to the middle of the gob. With increased ventilation volume and advance rate, the area of the CSC and gas coupling hazard zone expands continuously. By implementing measures such as brattice cloth and nitrogen injection, the areas of spontaneous combustion and CH4 explosion zones were reduced by 53.6 % and 49.5 %, respectively, effectively controlling the extent of the compound disaster zone and eliminating the risk of gas explosions.http://www.sciencedirect.com/science/article/pii/S2214157X24013728Coal spontaneous combustion110 mining methodCoupling disasterMoving mesh techniqueMulti physical field coupling model |
| spellingShingle | Li Ma Peng-yu Zhang Xiao-kun Chen Yan-peng He Gao-ming Wei Jing Fan Numerical Investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high-gas mines Case Studies in Thermal Engineering Coal spontaneous combustion 110 mining method Coupling disaster Moving mesh technique Multi physical field coupling model |
| title | Numerical Investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high-gas mines |
| title_full | Numerical Investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high-gas mines |
| title_fullStr | Numerical Investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high-gas mines |
| title_full_unstemmed | Numerical Investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high-gas mines |
| title_short | Numerical Investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high-gas mines |
| title_sort | numerical investigation of coupling hazard zone of coal spontaneous combustion and gas in gob for high gas mines |
| topic | Coal spontaneous combustion 110 mining method Coupling disaster Moving mesh technique Multi physical field coupling model |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24013728 |
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