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.