节点文献
利用中深孔定向断裂爆破提高掘进率
Fractured directional blasting by hole in medium depth to improve drilling efficiency
【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。
【Abstract】 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.
- 【文献出处】 河北煤炭 ,Hebei Coal , 编辑部邮箱 ,2000年04期
- 【分类号】TD23
- 【下载频次】35