Latest from Tunnels and Tunnelling


New technique could revolutionise mining
06 May, 2021 Researchers may have come up with a technique that could have far-reaching consequences for the extraction of metals from deep underground – and with minimal environmental impact.
  • Implenia to build world’s deepest metro station
    Swiss construction company Implenia has signed a contract with Stockholm Region for the construction of a new subway station and associated tunnels at Sofia in the Swedish capital. The order is worth around US$85m.
  • Final breakthrough on Copenhagen M4 line
    The final tunnelling breakthrough on the construction of Copenhagen’s M4 Sydhavn metro extension occurred recently when TBM Olivia holed through at Havneholmen station.


Band of brothers or distant cousins?
30 April, 2021 Martin Knights FREng, former ITA President, compares the functions and fortunes over the past 50-odd years of the British Tunnelling Society and the International Tunnelling Association
  • Tunnel vision or visual twins
    Barry Bassnett, founder of Astrea and Richpix, describes a new, relatively straightforward method of capturing asset condition using photographs without the need to resort to point clouds
  • A most ambitious conservation project
    Detractors of the Stonehenge Tunnel might be surprised to see it defended by a pillar of the conservation community. But Prof Tim Darvill argues that the tunnel is a well-researched tool of conservation using state-of-the-art approaches
  • Valley Vision
    Bernice Alaniz, Gretchen Baisa and Ronak Naik of VTA and John Caulfield VTA consultant discuss the proposed extension to California’s Bay Area Rapid Transit (BART) regional rail system
  • AI and Machine Learning
    Best use of artificial intelligence in tunnels will need data strategies plus experienced oversight, writes Patrick Reynolds