Anchors and Rock Bolts - COMBI-BOLT Combination Rock Bolt
The COMBI-BOLT is a unique combination rock bolt system. It offers the combined advantages of an immediate point anchorage and subsequently a fully grouted rock bolt. A two-step installation procedure allows fast installation and immediate anchorage, separate and independent grouting provides flexibility in regard to working cycles.
Due to the controlled grouting procedure and different bar coatings available, the COMBI-BOLT is a reliable ground control system for underground applications. The working ability of the COMBI-BOLT has been proven throughout various underground construction projects; the system has become a standard in today’s state-of-the-art ground control procedures.
Main Advantages
- Efficient, practically proven, and reliable rock reinforcement system
- Combination of an immediate point anchorage and a fully grouted rock bolt
- Immediate load-bearing capacity after installation by the mechanical anchor
- Fast installation and flexible postgrouting behind the working face
- Double corrosion protection due to a polyethylene sleeve and grout coverage
- Easy adjustment of the corrosion protection level to customer demands
- Semi-automated or manual installation procedure