摘要
针对平沟煤矿9#煤层瓦斯浓度超标状况,采用注浆封孔测压法进行煤层瓦斯压力测定,通过瓦斯压力梯度计算,为合理地选择瓦斯抽放方法提供了依据,有效地治理了工作面上隅角的瓦斯,确保了工作面的安全生产。
For the gas concentration in Level 9 coal seam in excess of the limits in Pinggou Coal Mine,determinates the gas pressure in coal seam by using the grouting sealing manometry,and calculates with determination by gas pressure gradient terms to provide a basis for the selection of the rational gas drainage method;Control the gas in upper corners effectively,and ensure the safety of production at working face.
出处
《煤矿机电》
2010年第5期90-92,共3页
Colliery Mechanical & Electrical Technology
关键词
瓦斯压力
测定
注浆封孔
gas pressure
determination
grouting sealing
