MICRO TUNNELLING

Micro tunnelling is less publicised than the better known, large diameter alternative, segmental lined tunnelling.

Micro tunnelling is an often cost-effective method of installing large diameter pipelines across shorelines, waterways, roads, and other locations.

Our engineering design expertise covers the full range of micro-tunnelling including:

  • Earth Pressure Balance (EPBM) & Slurry Shields
  • Soft soil and hard rock tunnelling
  • Long crossings (multiple interjack stations)
  • Horizontal & vertical curved profiles
  • Retractable micro-tunnelling
  • Steel, concrete and GRP pipes
  • Steerable auger boring
  • Sheetpiled & segmented launch and reception shafts
  • TBM recovery from seabed for shoreline crossings, such as for pipeline landfalls, water intakes and effluent outfalls.