李树清, 解庆雪, 赵训, 施凯. 高抽巷内上向钻孔抽采邻近层瓦斯的试验研究[J]. 煤矿安全, 2012, 43(7): 1-3.
    引用本文: 李树清, 解庆雪, 赵训, 施凯. 高抽巷内上向钻孔抽采邻近层瓦斯的试验研究[J]. 煤矿安全, 2012, 43(7): 1-3.
    LI Shu-qing, JIE Qing-xue, ZHAO Xun, SHI Kai. Experimental Study on Gas Extraction of Adjacent Coal Seams by Upward Drilling in High-located Drainage Roadway[J]. Safety in Coal Mines, 2012, 43(7): 1-3.
    Citation: LI Shu-qing, JIE Qing-xue, ZHAO Xun, SHI Kai. Experimental Study on Gas Extraction of Adjacent Coal Seams by Upward Drilling in High-located Drainage Roadway[J]. Safety in Coal Mines, 2012, 43(7): 1-3.

    高抽巷内上向钻孔抽采邻近层瓦斯的试验研究

    Experimental Study on Gas Extraction of Adjacent Coal Seams by Upward Drilling in High-located Drainage Roadway

    • 摘要: 为提高近距离煤层群下保护层开采上部邻近煤层卸压瓦斯抽采效果,减小工作面瓦斯涌出量,应用高抽巷巷内布置的上向钻孔抽采邻近煤层卸压瓦斯。探讨了该方法的原理和相关工艺,并在贵州盘江精煤股份有限公司金佳矿进行了试验。结果表明,高抽巷巷内布置的上向钻孔能够有效地抽采上部煤层的卸压瓦斯,提高抽采效果;在下保护层工作面开采早期,上向钻孔抽采瓦斯量小且浓度较低,中期抽采效果好,后期抽采效果逐渐变差。

       

      Abstract: In order to enhance extraction effect of the relieved methane from the upper adjacent coal seams,and to reduce the working face gas emission when the protected layer mined in the short-distance coal seams,a extraction method with the upward drilling holes located in the high-located drainage roadway was proposed.The principle and related technology of the method were discussed,and engineering experiment was taken at the Jinjia coal mine in the Guizhou Panjiang refined coal Co,Ltd.The result shows that the upward drilling hole in high-located drainage can effectively extract the relieved methane from the upper coal seam and can improve the extraction effect;early stage of mining in the next layer of protection face,the gas extraction content using upward drilling hole is small and low concentration;the extraction effect in medium stage is good and the post-extraction effect becomes worse.

       

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