Latest from Tunnels and Tunnelling


Network Rail gives historic deep shaft a new lease of life
24 September, 2021 Network Rail has completed the rehabilitation of a 241m-deep ventilation shaft serving the Cowburn Tunnel, located in a remote moorland area of the Peak District National Park and also one of the UK’s deepest railway tunnels.
  • Anti-Stonehenge scheme campaigners up the ante
    Boris Johnson is under pressure to scrap the proposed tunnel that will pass close to Stonehenge, following an open letter sent to 10 Downing Street by campaigning group Stonehenge Alliance, citing the adverse impact the tunnel would have on the World Heritage Site (WHS).
  • Open tender launched for Oslo E6 water supply project
    Oslo Municipality and Water Authority recently launched an open tender for the construction of the E6 Rentvannstunnel Clean Water Tunnel to bring treated water from a new plant at Huseby to the capital, Oslo, and also includes construction of new connections to the existing network.
  • Swiss underground goods conveyance network gets go ahead
    Cargo sous terrain (CST), the proposed system for transporting goods within Switzerland through tunnels linking production/distribution sites with urban centres has been given the green light by the country’s parliament.
  • Breakthrough achieved on India’s widest tunnel
    Infrastructure provider Afcons has achieved the fourth and final breakthrough on India’s widest tunnel, the twin-tubed Igatpuri Tunnel in Maharashtra. At 8km long, the tunnel is also the fourth longest in the country.


Jerusalem caverns present challenges of biblical proportions
08 September, 2021 Based on a presentation by Dr Roberto Schuerch of Pini Swiss Engineers, technical journalist Roland Herr gives an overview of an outstanding underground project brimming with engineering challenges
  • Tackling Toronto’s CSO Woes
    Toronto’s sewers are overloaded. Combined sewer overflows frequently spill into Lake Ontario, local rivers and streams. A major clean-up involving three separate tunnelling projects and more besides, is in progress. Julian Champkin reports
  • Closed form tunnel analysis methods
    In the first of a series of articles, Stephen Doran looks at closed-form tunnel analysis methods, their background and how they can provide an insight into the underlying assumptions used in software
  • Tunnel vision
    TunnelSkills – the national specialist training forum for the UK tunnelling industry – specialises in the application of immersive learning and new technology to improve training, learning and recruitment in the sector
  • NATM through challenging fault zones
    Ryo Kashiwagi of Japan Railway Construction, Transport and Technology Agency (JRTT) discusses the challenges from tunnelling the double-track Shinkansen railway which is close to an existing highway tunnel in an extremely soft fault crush zone