Soil Nailing is a slope stabilization and excavation support method where steel bars (nails) are installed at close intervals into the ground. This creates a reinforced, stable soil mass that resists movement, making it ideal for vertical cuts and steep embankments.
Core Objectives
- Stabilize slopes and vertical excavation faces
- Enhance the in-situ shear strength of the soil mass
- Control ground displacement and prevent failure
Field Application
- Highway and railway slope stabilization
- Deep basement excavation support in urban areas
- Landslide control and retaining wall remediation
Project Benefits
- Enables construction in restricted or unstable site conditions
- Cost-effective compared to traditional gravity retaining walls
- Minimal environmental and structural disturbance to neighbors
System Components
- Steel Reinforcing Bars (Fully grouted)
- Corrosion protection (Galvanization/Epoxy)
- Structural Shotcrete/Mesh Facing with Drainage
The soil nailing process is a "top-down" construction method. As the excavation proceeds in stages, holes are drilled into the face, steel nails are inserted, and the void is filled with high-strength grout.
A layer of shotcrete (sprayed concrete) and wire mesh is typically applied to the face to prevent localized erosion and provide structural continuity. Our methodology ensures every nail is installed at the precise angle and depth required to engage the active soil zone, turning potentially unstable ground into a self-supporting structural asset.
Our Methodology
- 1 Detailed site investigation and geotechnical design
- 2 Precision drilling and installation of steel reinforcing bars
- 3 High-pressure grouting and installation of face drainage
- 4 Application of shotcrete facing and long-term monitoring