小直径炮孔及药卷在巷道掘进爆破中的应用

The Application of Small Diameter Holes and Explosive Cartridges in the Development Blasting

比较了小直径炮孔与大直径炮孔在凿岩速度方面的差别 ,介绍了小药卷在小炮孔中取得的爆破效果 。

The drilling speed of smaller diameter blast holes was compared with that of bigger diameter blast holes,based on the blasting result of smaller explosive cartridges in combination with the smaller blast holes,the usage of smaller diameter hole blasting is proposed.