Recently, Yier Technology’s ATM-600T cutting Raise borer Machine successfully completed construction at the underground site of Jiangxi Jinshan Mining under China National Gold Group, achieving successful drilling of a cut shaft with an inclination angle of 81°, a hole diameter of 600 mm, and a depth of 21 meters. The equipment delivered stable and reliable performance, creating high-quality blasting free faces for stope extraction and helping Jinshan Mining realize tangible progress in its underground mechanization and intelligent upgrading. Cut shafts are a critical component of the staged open-stope backfilling mining method in underground mines, and the quality of cut shaft construction directly determines the effectiveness of subsequent blasting and ore release.

In the past, mines typically employed the bucket‑hoisting method and shallow‑hole blasting to construct cut‑and‑fill shafts. This approach required workers to operate in close proximity to the shaft, exposing them to safety hazards such as falling loose rock and working at height. Moreover, it suffered from poor shaft‑formation accuracy and lengthy construction cycles, making it difficult to meet the modern mining industry’s demands for robust safety management and efficient production.

To address the pain points of on-site construction, Jiangxi Jinshan Mining has introduced Yier Technology’s ATM-600T Raise borer Machine, replacing the traditional high-risk manual operation with mechanized equipment. The ATM-600T Raise borer Machine features a fully hydraulic, trackless, self-propelled design, with a compact overall structure that adapts to the narrow underground tunnels. The equipment can be quickly moved and positioned underground without the need for a concrete foundation; it relies on its built-in jacking mechanism to achieve rapid stabilization, significantly shortening the installation and commissioning period and fully meeting the spatial constraints of Jinshan Mining’s underground roadways.

The 81° inclined‑cut well being drilled this time has a bore diameter of 600 mm and an actual drilling depth of 21 meters. This operating condition places stringent demands on the rig’s structural stability, rotary torque, and directional‑steering accuracy.

The ATM-600T Raise borer Machine’s angle adjustment mechanism can cover an inclined shaft operation range of 60°–90°, perfectly adapting to the current near-steep inclined construction conditions.

The equipment employs fully mechanized operations, keeping workers away from the hazardous areas of the shaft and achieving inherently safe working conditions where “people are never exposed to danger.” During construction, real-time optimization of drilling parameters and strict control of borehole trajectory deviations ensured that, upon completion, the 21-meter shaft exhibited a straight borehole profile and a smooth, well‑formed wall, with deviation kept within the equipment’s design specifications. The resulting borehole quality fully met the standards for mining blasting operations. Compared with traditional construction methods, Yier Technology’s ATM-600T cutting Raise borer Machine demonstrates multiple technical advantages on-site. Its wheeled undercarriage provides flexible and agile underground relocation, significantly reducing the workload associated with disassembly and reassembly.

The robust all-hydraulic power system delivers ample rotary torque, making it well-suited for drilling through medium-hard rock formations in mining operations. Its automated drill‑pipe handling feature effectively reduces operator workload and ensures continuous, high‑efficiency operation.

This time, the 21-meter‑long, Φ600mm, 81°‑inclined Raise borer Machine was successfully completed, ensuring the smooth execution of the cutting slot construction project at Jinshan Mining’s main stope. It fully demonstrated the ATM 600T Raise borer Machine’s comprehensive adaptability to inclined shaft‑cutting applications in mining, providing a valuable engineering case study for mechanized construction of short‑inclined cut shafts in similar domestic mines. As an enterprise dedicated to the R&D and manufacturing of underground raise‑boring equipment, Yier Technology continues to focus on the actual operating conditions of underground mines, constantly optimizing its drilling rig performance, and steadfastly promoting the “mechanization replacing manpower, automation reducing labor” initiative in mining through equipment innovation.

In the future, Yier Technology will continue to deepen its expertise in the mining equipment sector, refine product quality, and optimize ancillary services, providing major mining enterprises with safe, efficient, and reliable underground drilling solutions, thereby supporting the high-quality, safe development of the mining industry.