Tunnelling

AF Anlegg performs tunnel and rock cavern projects for hydro power projects, roads and railways and other sub surface projects for industrial purposes. In addition the Tunnelling unit offer sub surface services.

The Tunnelling segment encompasses:

• Hydro power projects with power station, waterway and reservoir
  - New development projects
  - Expansion or renovation of existing plants
• Tunnels and rock chambers
  - Roadway and railway tunnels
  - Caverns and rock chambers for indusrty and private facilities
• Sub surface services 
  - Shotcrete
  - Water and frost sealing of tunnels, including fire protection
  - Rehabilitation of tunnels and underground facilities
  - Injection and sealing of rock

Our competitive advantages:

• Recognised supplier of services with a high level of competence to the country's generating plant owners
• Combination of creativity and experience in order to contribute to the projects being made financially profitable and environmentally acceptable
• Possessing the competence, capacity and competitive power to carry out subterranean projects
• High standard for tunneling machines and self-developed , specially adapted gunite and injection equipment

Historical review

The development of hydroelectric power in Norway in the 1970s and up through the middle of the 1980s formed the basis for AF. A majority of the founders of AF were associated with the development of Dammer Vatnedalsvatn in Setesdalen during 1979-1984. Large parts of this environment, and many of the company's key employees have also participated in building Norway's infrastructure by taking part in the construction of other significant hydroelectric power facilities. After it was founded in 1985, AF was shaped during the execution of Dam Dokkfløyvatn in 1986-1991.  The construction company part of AF was assembled in the first years for this project. The company's culture was formed by the thorough, well-organised and goal-oriented execution that has come to characterise the good hydroelectric power  projects.

AF has constructed tunnels for railway and highways during the last 15 years. Among the projects performed, is the construction of the railway tunnels Jong-Asker and the airport expresstrain tunnel Romeriksporten, the road tunnels Oslofjord sub sea tunnel and the Lofast tunnel and road section.

AF has also constructed several rock caverns for industrial purposes, among them the construction of the oil storage caverns for Norsk Hydro, the New Oset Water Treatment plant in Oslo and latest the sub surface parking garage in Fredrikstad.