Key reasons include:
High maneuverability: With one hydraulic boom, the machine can easily adjust drilling angles and positions, making it ideal for bolt holes at the crown, sidewalls, and corners.
Accurate positioning: The single arm allows precise control of drilling depth and inclination, which is crucial for anchor bolt quality.
Suitable for small to medium tunnels: It performs very well in limited working spaces where larger double-arm jumbos are less practical.
Lower operating cost: Compared with multi-arm jumbos, single-arm models consume less energy and are easier to operate and maintain.
Multi-function capability: Besides anchor bolt drilling, it can also be used for face drilling, probing holes, and auxiliary blasting holes.
In tunnel support construction-such as hydropower tunnels, mining roadways, and municipal tunnels-the single-arm rock drilling jumbo offers an excellent balance between flexibility, efficiency, and cost control.
