Main features of the rail-mounted shaft (counter) drilling rig:

♦ Safe and reliable. The rail-mounted Raise Boring Machine features fully mechanized operations and remote-controlled operation, providing a comfortable working environment with high safety standards.

♦ High work efficiency and excellent well quality. The rail-mounted Raise Boring Machine uses roller cutters to mechanically break through rock, resulting in smooth well walls, minimal deviation, and high drilling efficiency.

♦ Easy to operate, low construction costs, and excellent economic benefits. Utilizing advanced hydraulic transmission and control systems, it offers simple operation, reduced workload intensity, and lower labor costs.

♦ Easy to install. The host features a frame-type structure with top-and-bottom support and positioning, offering high load-bearing capacity, exceptional stability, and robustness. It can be set up and ready for construction immediately—no prior foundation work is required (provided the depth is less than 100 meters)—significantly reducing both construction costs and project timelines.

♦ The drill pipe has high strength. The drill rod threads of the raise borer machine adhere to the internationally recognized DI-22 standard, featuring a large helix angle and coarse thread profile. This design effectively prevents issues such as drill rod galling and breakage, enhancing overall reliability.

♦ Widely applicable. The Raise Boring Machine achieves a borehole diameter of Φ0.9 to 2.4 meters and a drilling depth of up to 280 meters. It can be combined with freezing methods or drilling techniques to create an integrated shaft-sinking technology. Additionally, it is well-suited for vertical shaft construction in various underground engineering projects, including hydropower, metallurgy, subway systems, transportation infrastructure, civil defense facilities, and military-industrial projects—showing broad potential for future applications.