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| Study on gas control technology in goaf of mining face by using extraction technology |
| Lv Dongnan |
| Dashucun Mine, Jizhong Energy Fengfeng Group Co., Ltd., Handan 056300, China |
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Abstract In order to control the gas in the top coal caving mining face of coal and gas outburst mines, based on the treatment methods of Dashucun Mine in recent years, combined with the actual application situation, the extraction effects are compared and discussed. The comprehensive analysis shows that among the three kinds of gas extraction technologies in goaf, the extraction of high-top roadway and high-level directional long borehole is stable and effective, and the cost of high-level directional long borehole is only 20 % of that of high-top roadway. Therefore, the high-level directional long borehole gas extraction technology is better, which provides a reference for the future gas control in the top coal caving mining face of coal and gas outburst mines.
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