Tunnel Face Consolidation

For preventive stabilization of the heading face in tunneling or gallery driving, mostly for preparing further stabilization measures:

• Stabilization to prepare for drilling and blasting
• At short distance in case of unstable soil
• Stabilization to prepare for pre-excavation grouting

Materials adapted to the tunneling method:

• Use of TBM: stabilization systems such as e.g. silicate resins
  • suitable for cutting and planing
  • non-stick properties
  • fast strength development
• Conventional tunneling such as drilling and blasting or excavation: mostly polyurethane systems
  • fast strength development
  • flexibly adjustable
  • waterstop and sealing at the same time

Heading face stabilization is usually part of extensive consolidation and sealing measures and plays an important role e.g. in pre-excavation grouting.