摘要
简要论述了深孔爆破提高瓦斯抽放的机理 ,以煤体中柱状装药爆炸后的裂隙圈半径进行了计算。进行了深孔爆破的现场试验 ,试验结果表明穿层深孔爆破可以有效地增加瓦斯抽放量。
The principle of increasing gas emission rate by long hole blasting in the crossing hole is discussed. The radius cracked zone in coal seam caused by long hole blasting is calculated. The site test of long hole blasting in coal seam is carried out. The test results indicate that long hole blasting in the crossing hole can improve the suction quantity of firedamp effectively.
出处
《煤矿安全》
CAS
北大核心
2003年第8期14-16,共3页
Safety in Coal Mines
关键词
煤层
穿层钻孔
瓦斯抽放
透气性
深孔爆破
Coal emission Crossing hole Permeability for gas Long hole blasting
