驱替置换煤层甲烷的注气影响半径及其在不同方向上的差异性

Gas Injection Influence Radius of Coal Seam Methane Displacement and Its Difference in Different Directions

注气置换驱替煤层甲烷是煤层强化预抽的一种新理念,并在阳泉矿区试验成功。采用实测法测定了石港煤矿15#煤层注气驱替置换煤层甲烷影响半径,发现注气影响半径在煤层的层理方向和垂直层理方向上存在差异性,并对此进行了分析,提出布孔建议以避免驱替置换盲区,更好地实现煤层消突。

Displacing coal seam methane by gas injection was a new concept to strengthen coal seam pre-pumping,it had been tested successfully in Yangquan Mining Area.In this paper,it determined the gas injection influence radius of coal seam methane displacement by using practical measurement method in NO.15 coal seam of Shigang Coal Mine,it was found that the influence radius in bedding and vertical direction was different,and it analyzed the reason.It put forward the suggestions to arrange gas injection holes to avoid displacing the blind zone,in order that the coal seam outburst elimination can be better achieved.