Elements of stonework excavation: Use down-holedrill assisted with hammer drill drilling. Control blasting loosely and side slope molding smoothing wall blasting.
石方开挖施工要点：采用潜孔钻机配以凿岩机钻眼，松动控制爆破和边坡成型光面爆破。
2
May operate air-track, rotary, down-the-hole or other drilling machines to drill blast holes or may direct drilling of blast holes.
操作空气运作轨道，旋转，向下钻孔机或其他钻探机钻爆破洞或直接钻爆破洞。
3
To achieve high efficiency energy - saving, the hydraulic design of technological innovation is applied to the light down the holedrill.