摘要
介绍了岩巷施工中，中深孔定向断裂爆破的工艺过程，并将施工结果与中深孔光面爆破进行了分析比较，该技术不仅有其优越性，而且有显著的经济效益。
It introduces the technological process of fractured directional blasting by holes in medium depth, and analyzes and compares the constructed results with that of the smooth - hole in medium depth blasting. This tech. has its advantage and remarkable economic benefits.
出处
《河北煤炭》
2000年第4期7-8,23,共3页
Hebei Coal
关键词
开拓
中深孔
掘进率
定向断裂爆破
development
hole in medium depth
directional blasting
