Mechanised tunnelling
In the past Wayss & Freytag was significantly involved in the development of mechanized tunnelling techniques. For example, they initiated the support of the tunnel face by means of a bentonite suspension and air-cushion. With the so-called “slurry shield” this technique was brought to operational maturity. Wayss & Freytag is a pioneer of this technique and has in the meantime driven more than 150 km of tunnel using slurry shields. In addition, more than 80 km of tunnel were driven using earth pressure balance shields and 30 km using hard rock TBMs.
Related Projects
1 four-lane motorway tunnel, total tunnel length 1,100 m, length of total section on our behalf approx. 4,800m.
Storage sewer at Berlin's Mauerpark will prevent sewer overflow into the Spree and Pranke rivers in the future.
New storage channel in Brussels East stores up to 8,000 m³ of rainwater and provides relief during heavy rainfall.
Connection of the Düsseldorf main railway station with the airport, the Düsseldorf trade fair center and the Airport City business park, construction of an underground railway station at the airport terminal.