The first MZHB7-1500/30PZ mining bolter transfer unit of China Shenhua’s Shendong Coal has recently been officially commissioned at the main haulage roadway heading face of Bu’ertai Coal Mine, adding new equipment for rapid roadway excavation.
Bu’ertai Coal Mine has complex underground geological conditions. Rock bolts on both sides of the roadway are arranged in one row per meter, with five bolts per row. The existing 5-boom bolter transfer unit has limited support capacity and suffers from poor process coordination, constraining support efficiency. At large corner-cut chambers, pneumatic rock bolters are still required for supplementary bolting, slowing down the excavation pace.
The new unit integrates rock bolt and cable support, material transfer, coal and rock crushing, and crawler travel. It is a core piece of rapid excavation equipment paired with a bolter miner. Equipped with 7 drilling booms in a partitioned layout of “3 booms for front roof, 2 for middle side wall, 2 for rear side wall,” it creates a multi-station collaborative support model and enhances side support efficiency. For large corner-cut chambers, the unit can directly install rock bolts on the outer side of the chamber, reducing auxiliary drilling steps and demonstrating superior environmental adaptability. Designed for medium-thick seams and large mining heights, the unit stands 2.8 meters tall and is suitable for roadways 3.0 to 4.5 meters high. All drilling booms support remote control and multi-dimensional flexible adjustment, offering wider support coverage and enabling full-section synchronous support.
