Here's a brief explanation:
🔧 Function of Rock Drilling Machine for Tunnel Support
A rock drilling machine is used to drill holes into the tunnel face or walls, into which support rods (usually rock bolts or anchor bolts) are installed. These rods help stabilize the tunnel by reinforcing the surrounding rock and preventing collapse.
🛠️ Common Types of Rods Used
Rock bolts – Used for initial tunnel support.
Self-drilling anchor rods – Combine drilling and anchoring in one step.
Rebar rods – Sometimes used in shotcrete applications.
🚧 Typical Application Steps
Position the drilling jumbo at the tunnel face or side wall.
Drill holes to the required depth using a hydraulic rock drill and steel rods.
Install support rods (manually or automatically) into the drilled holes.
Grout or resin may be injected to fix the rods and increase stability.
Shotcrete is often applied afterward for additional support.
🛠️ Recommended Machines
Single or double-arm rock drilling jumbo – For medium to large tunnels.
Drilling rigs with automatic rod changers – Improve speed and safety.
Crawler-type or wheel-type machines – Depending on tunnel conditions.
Would you like help choosing a specific model or type of rock drilling machine for your project?
