Soil nailing reinforces existing ground by installing closely spaced steel bars into a slope or excavation, then facing it with shotcrete (gunite) and mesh. It is a great alternative to a diaphragm wall for shallower basements.
Construction sequence
- Excavate a small cut
- Drill the nail hole
- Install and grout the nail with strip drain
- Place temporary shotcrete facing with mesh, bearing plate and nut
- Repeat for subsequent levels
- Place final facing with toe drain
Key features
- Soil nailing
- Shotcrete / guniting
- Weld mesh & fibre reinforced facing
- Drainage provisions
Applications
- Basement excavations
- Highway & railway slope stabilisation
- Tunnel portals
- Retrofitting of existing retaining walls
Benefits
- Rapid execution with less machinery
- Requires small working area
- Economical and flexible
- Less environmental impact
