What are the main advantages of drilling with a down-the-hole drilling rig? borehole drilling prices

① It can drill holes with larger diameter and deeper blastholes;

②The impactor dives into the hole to work, and the noise is small;

③ The exhaust gas discharged from the down-the-hole impactor can be used to discharge slag, especially for the downward blast hole, which can save power;

④Because the transmission of the impact force does not pass through the drill pipe and the connecting sleeve, the service life of the drill pipe is long; compared with the perforation of the roller cone drilling machine, the submersible drilling machine has small axial pressure, light drilling machine, and low equipment purchase cost. Due to the small axial pressure, drilling is not easy Deviation, so more suitable for drilling deep holes.