Used for drilling underground coal mines, drainage holes, grouting fire extinguishing holes, coal seam water injection holes, outburst prevention and pressure relief holes, geological exploration holes, and other engineering holes.
The drilling rig is suitable for various coal seams and rock formations with a rock firmness coefficient f ≤ 10. The cross-section of the roadway or drilling site is required to be greater than 6.5 m2, with a width greater than 2.3 m, and a width greater than 2.8 m.
