Bitless drilling system of rock, has drilling rig which is suspended at lower end of borehole wall, and is moved along drilling direction during the drilling process

摘要

The system uses separation methods such as heat, laser, plasma, and mechanical method to drill the rock which is broken into several pieces. The pieces are transported through conveyer unit which is provided with thin belt. A drilling rig which is suspended at the lower end of borehole wall is moved along drilling direction during the drilling process.