Forge 192

Envirofluid Forge 192 is a premium foam conditioning agent designed for tunnel boring in difficult and variable ground conditions. It generates a dense, highly stable foam that improves soil confinement, reduces water ingress, and supports smoother, more controlled excavation in demanding terrains. Forge 192 also helps create a more homogeneous soil structure, reducing cutterhead torque, lowering cleaning frequency, and minimising tool wear to support efficient tunnelling performance.

Key Benefits

• Dense, stable foam for improved face stability and soil support.
• Helps reduce water ingress in challenging ground conditions.
• Lowers cutterhead torque, cleaning frequency, and overall tool wear.
• Supports a more homogeneous spoil structure and more consistent chamber pressure.
• Compatible with standard TBM foam pumps and injectors.

Applications

• Tunnel boring in difficult or variable ground conditions.
• Mixed ground, including mixed soils and fractured rock.
• Water-bearing ground where improved confinement and reduced permeability are needed.
• Projects requiring stable foam expansion and consistent face pressure control.

Standard Dilution Rates

• Typically diluted with water at approximately 1–5% by volume in the foam generator.
• The foam solution is mixed with compressed air and injected into the excavation chamber via cutterhead or bulkhead ports.
• Foam expansion and injection settings can be adjusted to suit ground conditions and excavation requirements.