Latest from Tunnels and Tunnelling


Brenner breakthrough links Italy and Austria
20 May, 2022 A 24.1km stretch of the 64km Brenner Base Tunnel has been created with the breakthrough between two lots yesterday.


Tunnel to restore snowdonian landscape
22 April, 2022 An area of outstanding natural beauty, Snowdonia is scarred by unsightly pylons and overhead high-voltage cables. They will now be removed and placed in a new tunnel that forms part of a visual improvement project. Julian Champkin reports
  • An improving technology
    Once described as a ‘black art’, soil conditioning is today a proven engineering technique. But the question remains, says Alessandro Boscaro of Mapei, of how to attain good technical performance while achieving acceptable environmental sustainability?
  • Tunnels and stations that should be deeper
    Dr N Barton (Nick Barton & Associates, Oslo) and M Abrieu (CVA Consortium, São Paulo) expose the false economies and dangers of shallow tunnelling for metros in urban areas, arguing that deeper tunnels and longer escalators are well worth the extra cost
  • Notes on compressed air working – Part 2
    Following on from his Part 1 article which appeared in the March 2022 issue of T&T, Stephen Doran concludes his discussion of hyperbaric interventions by looking at three major international projects on which they were deployed