余吾煤业穿层钻孔抽采效果影响因素分析

Analysis of Influencing Factors on Drainage Effect of Crossing Hole in Yuwu Coal Industry

为合理优化余吾煤业底抽巷穿层钻孔布置参数,以N2203底抽巷施工穿层钻孔掩护N2203运输巷掘进为工程背景,分析了钻孔布置间距、钻孔水力增透措施、煤体硬度、抽采时间等因素对穿层钻孔抽采效果的影响,为余吾煤业同等条件下底抽巷穿层钻孔布置以及优化提供参考依据。

In order to rationally optimize the layout parameters of bed plate tunnel crossing hole of Yuwu coal industry, taking the N2203 bed plate tunnel cover tunneling of N2203 belt roadway in crossing hole of Yuwu coal industry as the engineering background, the influence of drilling spacing,drilling hydraulic antireflection measures, coal hardness and extraction time on drainage effect of crossing hole is analyzed. It provides the reference for the bed plate tunnel crossing hole arrangement and optimization under the same conditions of Yuwu coal industry.