CAJ | 학술논문

针对单一松软突出煤层瓦斯治理钻孔抽采难的问题，梁北煤矿通过选择大功率钻机和三棱钻杆，提高抽采钻孔的钻进深度和成孔率，有效消除了工作面中部的预抽“空白区”；通过采用“双子孔”防喷技术，解决了水力扩孔时易喷孔的问题；通过改进抽采钻孔封孔工艺，提高封孔质量，提高了单孔抽采量和瓦斯抽采浓度。采用新装备和新工艺后，实现了抽采达标，有效消除了瓦斯突出危险性并解决了瓦斯超限问题。
침대단일송연돌출매층와사치리찬공추채난적문제，량북매광통과선택대공솔찬궤화삼릉찬간，제고추채찬공적찬진심도화성공솔，유효소제료공작면중부적예추“공백구”；통과채용“쌍자공”방분기술，해결료수력확공시역분공적문제；통과개진추채찬공봉공공예，제고봉공질량，제고료단공추채량화와사추채농도。채용신장비화신공예후，실현료추채체표，유효소제료와사돌출위험성병해결료와사초한문제。
To counter to the difficulty in gas control by borehole gas drainage in the single soft outburst coal seam, the powerful drilling machine and triangular drilling stem were used in Liangbei Mine, which improved the drilling hole depth and hole-forming rate and effectively eliminated the gas pre-drainage“blank zone” in the middle of the working face;by adopting the“twin-hole” blowout prevention technology, the problem of gas blowout from holes during hydraulic hole reaming was solved;and by improving hole-sealing process, the hole-sealing quality was improved and the amount of gas drainage from single hole and the gas concentration were increased. After adopting new equipment and technology, the normalized gas drainage was achieved, the danger of gas outburst was effectively eliminated and the problem of gas overrun was solved.