高强度开采工作面瓦斯涌出规律及防治技术研究

Rules of gas gushing at high intensive mining face and its control technology

为探明塔山煤矿山4#煤层8101工作面的瓦斯来源及涌出规律,以解决该工作面自开采以来出现的瓦斯频繁超限情况,经测定,该工作面绝对瓦斯涌出总量约为7.6872m3/min,其中,煤壁及割落煤涌出瓦斯量最大为7.0137m3/min,约占工作面绝对瓦斯涌出总量的90%,且位于50#～105#支架之内的瓦斯涌出量最大,应着重治理。针对该情况,预采用工作面煤壁"浅孔快速、高效、强化抽采卸压瓦斯"技术。

The gas source and its gushing law at 8101 mining face of No.4 coal seam in Tashan Coalmine were verified to solve frequent gas exceeding limit after mining.It was found that the Abstract gas emission was 7.6872 m3/min,of which the maximum gas emission from the coal wall and the dropped coal was 7.0137 m3/min,accounting for 90 % of the Abstract gas emission.Moreover,the maximum gas emission was in the region of No.50-105 supports,which should be controlled as a key.In view of this,such technique as ＂rapid,high efficient and enhanced drainage via shallow borehole＂ should be adopted.