摘要
介绍了急倾斜煤层采空区上方"三带"的分布特点,对抽采钻孔的流量、浓度进行调研和分析,最终确定了顶板走向钻孔的终孔层位、钻场间距以及钻孔施工的角度、方位、长度等参数,从而进行最有效的瓦斯抽采。
The three - zone distributing features of overlying strata in steep coal seam gob are introduced, and the flux, concentration in drilling bore are analyzed to determine the layer of the drilling bore along roof strike, distance of the drilling field and the angle, azimuth, length of the bore, so the gas can be drained more effectively.
出处
《煤炭技术》
CAS
北大核心
2009年第1期80-82,共3页
Coal Technology
