寺河煤矿瓦斯抽放的试验研究  

An Experimental Study on Gas Drainage Based on Paralleled Drilling

作　　者：续鹏飞[1] 

机构地区：[1]山西晋城煤业集团寺河煤矿二号井,山西晋城048000

出　　处：《山东煤炭科技》2017年第11期64-66,共3页Shandong Coal Science and Technology

摘　　要：寺河煤矿通过在同一试验巷道中布置Φ113mm的二组孔间距分别为4m、6m和8m的平行钻孔,利用这些平行钻孔的实验数据,综合考察各组钻孔的瓦斯抽放效果。结果表明试验巷道所在煤层的水平钻孔最合理的孔间距为4m,同时也可以得出钻孔密度的增加有利于瓦斯预抽率的提高。This paper mainly discussed an experimental study in Sihe Coal Mine, in which two groups φ 113 mm hole spacing, respectively 4 m, 6 m and 8 m parallel boreholes are arranged in the same roadway. By an analysis of these parallel experimental data of drilling, and the effects of the gas drainage. The test shows that the most reasonable hole spacing in the horizontal hole of the coal bed is 4m, and the increase of borehole density is beneficial to the improvement of gas prepumping rate.

关 键 词：平行钻孔 抽放时间 瓦斯抽放量 合理孔间距 

分 类 号：TD712.6[矿业工程—矿井通风与安全]