摘要
通过对漳村煤矿2203回采工作面原高位钻孔参数设计及抽采效果分析,优化设计出两种不同参数的高位钻孔。抽采结果表明,优化后高位钻孔瓦斯最大抽采浓度从10.56%提高到26.8%;单孔最大瓦斯抽采量从0.336 m3/min增加到0.808m3/min,增幅高达240%。有效地解决了工作面上隅角瓦斯问题,为工作面的安全回采提供了保障。
Analyses the high - located hole parameters and gas drainage. Two optimized parameters high - located hole is established and applied in 2203 workface. The gas drainage result indicate that, improved maximum drainage gas concentration froml0.56% to 26.8%, the maximum gas flow increase 2.4 times. The optimized parameters high - loca-ted hole effectively prevented gas accumulation at upper corner and could prove sufficient guarantee to the safe mining op- eration.
出处
《内蒙古煤炭经济》
2013年第8期91-91,102,共2页
Inner Mongolia Coal Economy
关键词
高位钻孔
瓦斯抽采
参数优化
High - located hole
gas drainage
parameters optimization
