一般在隧道掘进作业中,移动支臂使凿岩机对准预定的穿孔位置,接着便操纵凿岩机进行凿孔作业。该支臂的移动操纵,以一次凿孔作业进行一次为好。在整个凿孔作业中,一边进行凿岩机的开眼运转、全开运转、因岩质变化推进力的调整,一边进行给定深度的凿孔作业。若上述动作结束,凿岩机经过半开运转的转换、由前进向后退方向的进给转换,则 In tunnel boring operations, the moving arm moves the rock drilling machine at a predetermined piercing position, and then the rock drilling machine is used to drill a hole. The arm of the mobile operation, once a perforation job as well. Throughout the entire borehole drilling operation, the drill was opened and the drilling machine was fully open to perform drilling operations of a given depth while adjusting the rocking force. If the above operation is ended, the rock drill is switched from half-open operation to forward-backward feed operation, then