筛管护孔工艺及装备在神华宁煤集团的应用

发布时间：2018-04-20 19:57

本文选题：筛管 + 护孔装备　；参考：《煤矿安全》2015年12期

【摘要】：神华宁煤集团金能煤业分公司和乌兰煤矿被鉴定为煤与瓦斯突出矿井,一直以来利用钻孔瓦斯抽采预防和治理瓦斯灾害。在钻进过程中,经常发生因孔壁坍塌、瓦斯突出而造成的抱钻、埋钻事故,以及塌孔后因抽采通道堵塞而导致钻孔瓦斯抽采利用率低。大通孔螺旋钻杆能有效解决钻进过程中的抱钻、埋钻事故,联合一字铰接钻头和悬挂装置实施筛管护孔工艺技术可解决钻孔瓦斯抽采利用率低的问题。在现场应用过程中,使用人工和筛管助推器2种方式下放筛管,共完成工程量3 845 m,其中筛管助推器的效率是人工下放方式的3倍,表明筛管护孔工艺技术及装备适合在松软煤层矿区推广应用。
[Abstract]:Jinneng Coal Industry Branch of Shenhua Ning Coal Group and Wu Lan Coal Mine have been identified as coal and gas outburst mines and have been using borehole gas extraction to prevent and control gas disasters. In the process of drilling, there are often drilling and burying accidents caused by hole wall collapse, gas outburst, and low utilization rate of gas drainage caused by blockage of drainage passage after hole collapse. Through-hole spiral drill pipe can effectively solve the problems of holing and burying during drilling. The low utilization rate of borehole gas extraction can be solved by combining one-word hinge bit and suspension to implement sieve pipe protecting technology. In the process of field application, the sieve tube was lowered by manual and sieve tube booster, and the engineering quantity was 3 845 m, and the efficiency of sieve tube booster was 3 times as much as that of manual booster. It shows that the technology and equipment of sieve pipe protecting hole are suitable for popularizing and applying in soft coal seam mining area.
【作者单位】：中煤科工集团西安研究院有限公司;中国地质大学(武汉)工程学院;
【分类号】：TD713.3

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