Summary of the application of down the hole drilling machines for blasting in Chinese mines
In recent years, down the hole drilling technology has been widely used in the field of mining blasting in China, significantly improving drilling efficiency and blasting accuracy. Mainstream models such as the KS669 series achieve efficient drilling in hard rock formations (with a Brinell hardness of ≥ 20) through a dual power head design (torque of 2800N · m) and an intelligent pressurization system. The aperture covers 80-150mm and the depth reaches 50m. Its dry dust removal system (efficiency of 85%) and low-temperature hydraulic technology (starting at -40 ℃) further adapt to complex mining environments.
Technical advantages:
High efficiency: optimized gas consumption to 11-25m ³/min, saving 40% energy compared to traditional equipment;
Intelligence: The pressure compensation system ensures a deep hole positioning accuracy of ± 0.5m;
Environmental friendliness: Dust emission concentration ≤ 10mg/m ³, in compliance with green mining standards.
At present, down the hole drilling machines have been widely used in large-scale open-pit mines and tunnel projects in China, becoming the core equipment for blasting operations. In the future, with the integration of modular design and unmanned technology, its application scenarios will be further expanded.
