摘要
为了准确测定煤层穿层钻孔有效抽采半径,达到理想的抽采效果,根据煤层赋存条件,采用Φ94 mm终孔圆周布置法布置穿层钻孔对4~#煤层进行抽采半径测定。
In order to accurately measure the effective pumping radius of drilling holes in coal seams, the ideal pumping effect is achieved. According to the occurrence condition of coal seam, the drilling hole of No. 4 coal seam is extracted by adopting the method of circumferential arrangement of φ94 mm end hole, and the extraction radius is determined.
作者
罗如强
石永生
杜旭
LUO Ru-qiang1,2, SHI Yong-sheng2, DU Xu1,2(1. Coal Science Research Institute, Beijing 100013, China; 2. Shenyang Research Institute, China Coal Technology and Engineering Group, Fushun 110016, Chin)
出处
《煤炭技术》
CAS
2018年第4期155-156,共2页
Coal Technology
关键词
煤层瓦斯
有效半径
穿层钻孔
瓦斯压力
coal-seam gas
effictive radius
layer-through borehole
gas pressure
