What Is A DTH Drilling Rig Used For?
DTH drilling rig (Down-the-hole drilling rig) is a submerged hole drilling rig, whose core operating principle is to install a submerged hammer at the bottom of the drilling column, and to achieve rock-breaking drilling through the synergistic action of the three elements of ‘drilling pressure, rotation, and air pressure’. When the column rotates slowly, the hammer is driven by compressed air, and the impact force generated by the reciprocating piston continuously strikes the rock, forming a highly efficient rock-breaking capacity in conjunction with the rotating movement. This technological breakthrough allows the contractor to seamlessly switch from earth drilling to rock drilling scenarios without the need to replace the equipment, simply by adding compressors and hammers, which significantly improves operational efficiency.