ZYL-25000D Crawler-mounted Full-hydraulic Directional Drill for Coal Mines

The crawler - mounted full - hydraulic directional drill for coal mines is mainly used for the construction of various engineering directional boreholes in coal mines, such as gas drainage, grouting for fire prevention and extinguishing, coal seam water injection, outburst prevention and pressure relief, water disaster control, and geological exploration. It is applicable to various coal seams and rock strata with a rock solidity coefficient f < 10. The drill can move independently and turn in place. It requires that the height of the roadway or drilling site is greater than 3m, the width is greater than 4.5m, and the cross - section is greater than 12m. It is also used for small - diameter diamond drilling in the exploration of metal and non - metal solid deposits, as well as for engineering geological surveys in civil construction, highways, railways, bridges, dams, national defense construction, and for engineering drilling in the exploration of hydrological oil and gas fields and dam grouting. The main supporting products of this drill include down - hole motors, mining MWD (measurement while drilling) devices, directional drill pipes, etc.

The ZYL-25000D crawler-mounted fully hydraulic directional drilling rig for coal mines and its supporting equipment were selected for the 2021 First Set (Unit) of Major Technical Equipment Product Project, achieving technological breakthroughs with leading torque and borehole diameter in the industry. This model can construct no less than 3 high-position large-diameter directional boreholes, with a main hole depth of not less than 500m, a final hole diameter of not less than 300mm, and a hole formation rate of not less than 80%. It realizes a two-pass hole formation process, with one directional drilling pass and one reaming pass to reach a diameter of 300mm. Both the directional drilling and reaming progress can reach 1500m.