| 顶板高位定向钻孔抽采瓦斯效果分析 |
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| 引用本文： | 李江平. 顶板高位定向钻孔抽采瓦斯效果分析[J]. 江西煤炭科技, 2022, 0(1): 177-179,182. DOI: 10.3969/j.issn.1006-2572.2022.01.060 |
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| 作者姓名： | 李江平 |
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| 作者单位： | 山西三元福达煤业有限公司,山西 长治 046000 |
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| 摘 要： | 针对回采工作面回风隅角瓦斯浓度高影响安全生产问题,设计采用顶板高位定向钻孔对采空区瓦斯进行抽采,通过分析23051工作面顶板三带分布及采空区瓦斯分布流场情况,合理设计顶板高位定向钻孔层位、孔径及深度,采用顶板高位定向钻孔进行采空区瓦斯抽采后,回风隅角最高瓦斯浓度由0.7％下降至0.4％,顶板高位定向钻孔抽采瓦斯量占工作...
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| 关 键 词： | 回采工作面 瓦斯治理 定向钻孔 抽采效果 |
Analysis of Drainage Gas Effect of Directional Drilling in High Position of Roof |
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| Li Jiangping. Analysis of Drainage Gas Effect of Directional Drilling in High Position of Roof[J]. Jiangxi Coal Science & Technology, 2022, 0(1): 177-179,182. DOI: 10.3969/j.issn.1006-2572.2022.01.060 |
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| Authors: | Li Jiangping |
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| Affiliation: | (Shanxi SanyuanFuda Coal Industry Co.Ltd.,Changzhi,Shanxi 046000) |
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| Abstract: | Aiming at the problem of high gas concentration in the return air corner of the mining face, which affects safety production, the author designs high-position roof directional drilling to drain gas in the goaf, analyzes the three-zone distribution of the roof of the 23051 working face and the gas distribution flow field in the goaf, and reasonably designs the horizon, diameter and depth of the high-position directional drilling on the roof, which enables the maximum gas concentration in the return air corner to be reduced from 0.7% to 0.4%, and the amount of gas drained by high-position directional drilling on the roof to be accounted for 73% of the total amount of gas drained of the working face and ensures the safe production of the working face. |
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| Keywords: | mining face gas control directional drilling extraction effect |
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