Small section tunnels for hydraulics works, industrial installations, access cannons to underground stations, dual tube tunnels connections, emergency galleries in long railway or road tunnels, in ventilation systems etc.
This type of work requires specific machinery, above all in earth removal, as the narrow section considerably hampers machinery manoeuvring.
Nortúnel has great experience in the use of LHD machines (loaders – transporters) and ITC machines.
