阳煤登茂通回采工作面抽采工艺优化

Optimization of gas extraction technology in stope face of Yangquan Group Dengmaotong Coal Industry Corporation

阳煤登茂通煤业公司在开采2号煤层过程中,在瓦斯抽采方法上,通过两种抽放方法在抽放效果、安全及成本方面综合对比,采用大直径钻孔抽放并缩短抽放间距的方法,在回采工作面回风巷与相邻备用工作面进风巷之间的煤柱上每隔20 m布置一个直径为400 mm的瓦斯抽放钻孔,代替巷道施工,避免了瓦斯抽放盲区,有效解决了工作面上隅角瓦斯超限问题,确保安全生产。

In No.2 coal seam mining of Yangquan Group Dengmaotong Coal Industry Corporation, effect, security and costof two gas drainage methods were compared comprehensively. Large diameter drilling drainage was used to shorten drainagegap, every 20m in pillar bewtten adjacent spare face intake airflow roadway and stope face return airway were set a gasdrainage hole with 400mm diameter to replace roadway construction and avoid dead zone of gas drainage, which improvedcomer transfinite gas in working face and ensured safety production.