GCF-20A reverse circulation percussive rotary drill rig is a multi function drill rig with percussive drilling as the main means and rotary drilling as supplemented.
0a型沖击-回转反循环工程鉆机是以沖击鉆进为主、回转鉆进为辅的多功能鉆机,可适应软、硬巖石等不同地层鉆进的要求。
GCF-20A reverse circulation percussive rotary drill rig is a multi function drill rig with percussive drilling as the main means and rotary drilling as supplemented.
GCF - 2 0a型沖击-回转反循环工程鉆机是以沖击鉆进为主、回转鉆进为辅的多功能鉆机,可适应软、硬巖石等不同地层鉆进的要求。
This paper introduces the automatic drilling principle, the hardware composition and software program in the windlass percussive drilling by the microcomputer control system.
介绍了卷扬式沖击鉆进过程中,微机控制实现自动鉆进的基本原理、硬件的组成和软件的设计。