Powerful Hard Rock Excavation: EBH330M-2 Intelligent Bolter Miner Deployed at Jining Mining Group for High Efficiency Tunneling

Two units of the EBH330M 2 horizontal axis intelligent bolter miner, independently developed and manufactured by Chuangli Group, have officially gone into operation at Yangcheng No.2 Mine and Jinqiao No.2 Mine under Shandong Ronghui Group. Following assembly, commissioning and underground trial runs, the equipment now provides robust technical support for safe, efficient roadway excavation at both sites.

Work zones including the inclined track downhill in Mining Zone 10 of Yangcheng No.2 Mine and the reverse tunneling belt conveyor roadway on the east wing of Jinqiao No.2 Mine are challenged by steep slopes and hard rock. Traditional tunneling methods deliver low efficiency, while roadway support and on site safety management pose major challenges. Designed for these harsh operating conditions, the EBH330M 2 intelligent bolter miner features a horizontal cutting head with an economical cutting hardness rating of f10, capable of tunneling hard rock roadways with rock hardness ranging from f10 to f12. Its compact build, paired with a high performance slope adaptable shovel plate and heavy duty travel reducer, enables stable climbing and effective floor clearing on slopes up to ±22°, making it suitable for both mixed coal rock and hard rock tunneling scenarios.

Integrating tunneling, rock bolt support and temporary support capabilities, the machine comes fitted with two hydraulic rock bolt drills to deliver full coverage support without blind spots. Its cylindrical rail and chain doublespeed mechanism speeds up drilling and bolt removal workflows, greatly cutting down anchoring time and solving the long standing industry challenge of slow bolt support.

For enhanced safety and reliability, hydraulic interlocks for tunneling, bolting and support functions, plus an electrical interlock for the cutting head, create multi layer safety safeguards. Key components adopt premium international specifications, supported by high efficiency cooling and back flush filtration systems to reduce downtime. This allows for sustained, long hour underground operation to meet demanding mine site schedules.

Throughout commissioning, Chuangli Group deployed on site R&D and after sales engineers, who worked alongside underground crews at tunneling faces. They supervised full cycle installation, commissioning and trial operation, responded rapidly to on site issues, and delivered hands on training for mine operators and maintenance teams. These measures helped the bolter miner adapt quickly to underground hard rock conditions, maintain stable uptime and achieve optimal performance.

Hard rock tunneling is vital to efficient coal mining. The successful deployment of the EBH330M 2 intelligent bolterminer across the two Jining Mining Group mines validates its strong performance in steep, hard rock roadway environments. Chuangli Group will keep advancing R&D for intelligent coal mining excavation equipment. The company will address complex underground geological challenges through continuous product refinement. By supplying reliable mining machinery, Chuangli Group will boost tunneling efficiency for coal mines and support the advancement of smart mining.