Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combination
With the depletion of shallow coal resources in China, the depth and intensity of coal mining have gradually increased in recent years, the amount of gas emission has increased sharply, and coal-rock compound disasters occur frequently, which brings great risks to mine safety production. In order to...
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| Format: | Article |
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Editorial Office of Safety in Coal Mines
2025-06-01
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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.20240275 |
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| author | Yang LI Yuanfang LI Zhan SHI Yifan ZHU |
| author_facet | Yang LI Yuanfang LI Zhan SHI Yifan ZHU |
| author_sort | Yang LI |
| collection | DOAJ |
| description | With the depletion of shallow coal resources in China, the depth and intensity of coal mining have gradually increased in recent years, the amount of gas emission has increased sharply, and coal-rock compound disasters occur frequently, which brings great risks to mine safety production. In order to have a better understanding of the formation mechanism of coal-rock-gas compound dynamic disaster, the coal-rock combination with gas was taken as the research object to carry out the disaster experiment of coal-rock combination instability under different working conditions. The results show that when the accident occurs, the scattered pulverized coal is mainly concentrated in the middle and distal areas, and the throwing distance can be up to 17 meters. The relative intensity of disasters for coal-rock formations 1# to 3# increases from 12.61% to 20.53% under different gas pressures, showing an increase of 7.92%, and the type of disaster changes from compound disaster to coal and gas outburst. The smaller the gas pressure and roof strength, the greater the coal strength and ground stress, and other conditions are the same, it can promote the coal-rock-gas compound dynamic disaster. |
| format | Article |
| id | doaj-art-9138a4fabf6f49feb9a084b18dfaeb2f |
| institution | Kabale University |
| issn | 1003-496X |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-9138a4fabf6f49feb9a084b18dfaeb2f2025-08-20T03:45:15ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2025-06-01566425010.13347/j.cnki.mkaq.20240275lyMKAQ20240275Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combinationYang LI0Yuanfang LI1Zhan SHI2Yifan ZHU3China Energy Shendong Coal Group Co., Ltd., Yulin 719315, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaWith the depletion of shallow coal resources in China, the depth and intensity of coal mining have gradually increased in recent years, the amount of gas emission has increased sharply, and coal-rock compound disasters occur frequently, which brings great risks to mine safety production. In order to have a better understanding of the formation mechanism of coal-rock-gas compound dynamic disaster, the coal-rock combination with gas was taken as the research object to carry out the disaster experiment of coal-rock combination instability under different working conditions. The results show that when the accident occurs, the scattered pulverized coal is mainly concentrated in the middle and distal areas, and the throwing distance can be up to 17 meters. The relative intensity of disasters for coal-rock formations 1# to 3# increases from 12.61% to 20.53% under different gas pressures, showing an increase of 7.92%, and the type of disaster changes from compound disaster to coal and gas outburst. The smaller the gas pressure and roof strength, the greater the coal strength and ground stress, and other conditions are the same, it can promote the coal-rock-gas compound dynamic disaster.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240275composite dynamic disastergas bearing coal rock combinationcoal and gas outburstmechanical instabilityamount of gas emission |
| spellingShingle | Yang LI Yuanfang LI Zhan SHI Yifan ZHU Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combination Meikuang Anquan composite dynamic disaster gas bearing coal rock combination coal and gas outburst mechanical instability amount of gas emission |
| title | Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combination |
| title_full | Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combination |
| title_fullStr | Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combination |
| title_full_unstemmed | Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combination |
| title_short | Experimental study on disaster caused by instability of loaded gas-bearing coal-rock combination |
| title_sort | experimental study on disaster caused by instability of loaded gas bearing coal rock combination |
| topic | composite dynamic disaster gas bearing coal rock combination coal and gas outburst mechanical instability amount of gas emission |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240275 |
| work_keys_str_mv | AT yangli experimentalstudyondisastercausedbyinstabilityofloadedgasbearingcoalrockcombination AT yuanfangli experimentalstudyondisastercausedbyinstabilityofloadedgasbearingcoalrockcombination AT zhanshi experimentalstudyondisastercausedbyinstabilityofloadedgasbearingcoalrockcombination AT yifanzhu experimentalstudyondisastercausedbyinstabilityofloadedgasbearingcoalrockcombination |