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| Research on comprehensive gas control technology in high gas mining face of low permeability thick coal seam |
| Han Sihua1, Liu Shulun2 |
| 1. Taihang Mining Co., Ltd., Jizhong Energy Handan Mining Groupx, Handan 056300, China; 2. Jizhong Energy Handan Mining Group, Handan 056008, China |
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Abstract This paper studies the comprehensive gas control technology used in the high gas mining face of low permeability thick coal seam in Longquan Coal Mine. The practical results show that through implementation of this technology, the gas concentration of the upper corner and the return air flow in the working face is kept below 0.3%, and the gas extraction rate is above 60%, which successfully solves the problem of gas overrun in the high gas mining face of low permeability thick coal seam.
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