Bolter Miner
A Bolter Miner (BM) is an advanced underground coal mining machine that combines the functions of a Continuous Miner and Roof Bolter in a single unit. It cuts coal from the face and simultaneously installs roof bolts for immediate roof support, improving safety and operational efficiency.
Bolter miners are widely used in room-and-pillar mining where maintaining roof stability during cutting is critical.
Advantages of Bolter Miner
- Simultaneous Cutting and Roof Support
Roof bolts are installed immediately after cutting, improving safety. - Higher Safety Level
Workers are better protected because the roof is supported during mining. - Higher Productivity
Reduces downtime between coal cutting and roof bolting. - Better Ground Control
Improves stability in weak roof conditions. - Reduced Workforce at the Face
More automation reduces manpower requirement.
Applicability
Bolter miners are suitable for:
- Underground coal mines using Room and Pillar method
- Seams with weak or moderately weak roof strata
- Mines requiring high safety standards
- Seam thickness generally between 1.8 m to 4.5 m
