News & Infos Side wall method II
Core excavation II (invert)
News & Infos Side wall method III
Side drift: excavation and installation of invert support
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Tunnel Lainz LT31

Site supervision
  • double-track railway tunnels
  • length: 3,050m
  • total cost: EUR 158.7 M
  • construction period: 2006-2011
Side wall drift in soft ground.
Two adit shafts, depth 30m
Cross section 132m² and 145m²
Tunnel drifts under built-up area with overburden ranging from 6 to 20m
Groundwater lowering by means of some 200 wells (gravitational and vacuum)

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