Down-the-hole (DTH) drilling rigs are utilized in projects such as urban construction, railways, highways, river engineering, and hydropower for drilling operations-including rock anchor cable holes, anchor rod holes, blasting holes, and grouting holes. They are widely applied across sectors including metal mining, hydropower, transportation, construction materials, port facilities, national defense, and general infrastructure construction. In geological formations with extensive karst development, these rigs can be used for pre-drilling pile foundation holes to reduce rock resistance and for correcting the alignment of inclined holes on sloped rock faces; they offer advantages such as labor and time savings, low costs, and effective deviation correction.
Features:
DTH drilling rigs are characterized by minimal impact energy loss regardless of drill rod length, the ability to drill large-diameter deep holes, low noise levels at the work face, high drilling speeds, a high degree of mechanization, reduced auxiliary operation time, excellent maneuverability, and high drilling quality. They are suitable for rock formations with a hardness of medium-hard or above (f ≥ 8). Modern DTH rigs are evolving toward greater intelligence, eco-friendliness, larger scale, and lighter weight; features include engines meeting China IV emission standards, high-efficiency dust removal systems (with efficiencies exceeding 95%), adaptive control systems, remote monitoring systems, and ergonomic operator cabins.
