Study on gas source tracing and migration law of mining face based on carbon isotope
In order to realize the accurate source control of gas in the mining face of a mine in Tangshan, based on the stable carbon isotope analysis technology, the linear mixed gas source calculation model was used to quantitatively analyze the sources and proportions of mixed gas at different locations of...
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| Format: | Article |
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Editorial Office of Safety in Coal Mines
2025-04-01
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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.20240062 |
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| author | Jiayong ZHANG Shuya WANG Xiao CUI Liwen GUO Lianhe GUAN Jingbin FU Xiaoyong CHEN |
| author_facet | Jiayong ZHANG Shuya WANG Xiao CUI Liwen GUO Lianhe GUAN Jingbin FU Xiaoyong CHEN |
| author_sort | Jiayong ZHANG |
| collection | DOAJ |
| description | In order to realize the accurate source control of gas in the mining face of a mine in Tangshan, based on the stable carbon isotope analysis technology, the linear mixed gas source calculation model was used to quantitatively analyze the sources and proportions of mixed gas at different locations of the mining face, and the gas flow model of the mining face and goaf was constructed to simulate and analyze the spatial volume fraction distribution and change of gas in different coal seams, and to reveal the dynamic migration law of gas in the overlying coal seam and the coal seam. The results show that the carbon isotope values of CH4 in the coal seam and the overlying coal seam are −68.02% and −77.91%, respectively. The gas contribution ratios of the coal seam at the upper corner of the mining face, the return air roadway at 30 m from the working face, and the return air side of the goaf at 10 m and 40 m from the working face were 76%, 67%, 59% and 81%, respectively. Under the influence of air leakage diffusion and fracture distribution, the coal seam gas showed a dynamic migration law of cross-layer flow and accumulation to the return air side, and the gas volume fraction increased with the inflow of overlying coal seam gas. |
| format | Article |
| id | doaj-art-4479fcdc48384f209942eea1cf316dd5 |
| institution | OA Journals |
| issn | 1003-496X |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-4479fcdc48384f209942eea1cf316dd52025-08-20T02:26:46ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2025-04-015641810.13347/j.cnki.mkaq.20240062lyMKAQ20240062Study on gas source tracing and migration law of mining face based on carbon isotopeJiayong ZHANG0Shuya WANG1Xiao CUI2Liwen GUO3Lianhe GUAN4Jingbin FU5Xiaoyong CHEN6School of Emergency Management and Safety Engineering, North China University of Science and Technology, Tangshan 063210, ChinaSchool of Emergency Management and Safety Engineering, North China University of Science and Technology, Tangshan 063210, ChinaSchool of Emergency Management and Safety Engineering, North China University of Science and Technology, Tangshan 063210, ChinaSchool of Emergency Management and Safety Engineering, North China University of Science and Technology, Tangshan 063210, ChinaKailuan (Group) Limited Liability Company, Tangshan 063000, ChinaJizhong Energy Fengfeng Group Limited Liability Company, Handan 056001, ChinaJizhong Energy Fengfeng Group Limited Liability Company, Handan 056001, ChinaIn order to realize the accurate source control of gas in the mining face of a mine in Tangshan, based on the stable carbon isotope analysis technology, the linear mixed gas source calculation model was used to quantitatively analyze the sources and proportions of mixed gas at different locations of the mining face, and the gas flow model of the mining face and goaf was constructed to simulate and analyze the spatial volume fraction distribution and change of gas in different coal seams, and to reveal the dynamic migration law of gas in the overlying coal seam and the coal seam. The results show that the carbon isotope values of CH4 in the coal seam and the overlying coal seam are −68.02% and −77.91%, respectively. The gas contribution ratios of the coal seam at the upper corner of the mining face, the return air roadway at 30 m from the working face, and the return air side of the goaf at 10 m and 40 m from the working face were 76%, 67%, 59% and 81%, respectively. Under the influence of air leakage diffusion and fracture distribution, the coal seam gas showed a dynamic migration law of cross-layer flow and accumulation to the return air side, and the gas volume fraction increased with the inflow of overlying coal seam gas.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240062gas sourcesplit source calculationcarbon isotopequantitative traceabilitygas migration |
| spellingShingle | Jiayong ZHANG Shuya WANG Xiao CUI Liwen GUO Lianhe GUAN Jingbin FU Xiaoyong CHEN Study on gas source tracing and migration law of mining face based on carbon isotope Meikuang Anquan gas source split source calculation carbon isotope quantitative traceability gas migration |
| title | Study on gas source tracing and migration law of mining face based on carbon isotope |
| title_full | Study on gas source tracing and migration law of mining face based on carbon isotope |
| title_fullStr | Study on gas source tracing and migration law of mining face based on carbon isotope |
| title_full_unstemmed | Study on gas source tracing and migration law of mining face based on carbon isotope |
| title_short | Study on gas source tracing and migration law of mining face based on carbon isotope |
| title_sort | study on gas source tracing and migration law of mining face based on carbon isotope |
| topic | gas source split source calculation carbon isotope quantitative traceability gas migration |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240062 |
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