SELF-DRILLING ANCHORS
Self-Drilling Anchors for Ground Stabilization
Self-Drilling Anchors are ground reinforcement systems designed for applications where conventional drilling and anchoring methods may be difficult to install.
They are particularly useful in weak, fractured or unstable ground, where borehole collapse can make conventional anchor installation challenging.
How Self-Drilling Anchors Work
A Self-Drilling Anchor uses a hollow steel bar that acts both as a drilling rod and as the permanent reinforcement element.
The drill bit creates the borehole while the hollow bar remains installed in the ground. Grout can then be injected through the hollow bar, filling the space around the anchor and creating the bond between the reinforcement and the surrounding ground.
This drilling-and-anchoring principle can simplify installation in difficult geological conditions.
Applications
Self-Drilling Anchors are suitable for:
- Weak rock
- Fractured rock
- Loose ground
- Underground mining
- Tunnelling
- Ground stabilization
- Slope stabilization
- Geotechnical works
- Temporary reinforcement
- Permanent reinforcement
- Difficult drilling conditions
Advantages
- Drilling and reinforcement in one system
- Suitable for unstable ground
- Suitable where boreholes may collapse
- Grout injection through the hollow bar
- Efficient installation in difficult geological conditions
- Suitable for mining, tunnelling and geotechnical applications
Self-Drilling Anchors can provide an effective solution where conventional drilling, hole cleaning and subsequent reinforcement installation are difficult to control.