Latest from Tunnels and Tunnelling


LATEST NEWS

TBMs reach halfway on HS2’s longest tunnels
02 February, 2023 The two TBMs excavating HS2’s longest tunnels have passed the halfway point on their 16km journey under the Chilterns.
  • VTA secures BART extension funding
    The State of California has awarded US$375m (£304m) to the Santa Clara Valley Transportation Authority (VTA) for its BART extension into Downtown San Jose and Santa Clara.
  • Barhale appoints new director
    Civil engineering and infrastructure specialist Barhale has appointed a new regional director for Yorkshire and north-east England.

LATEST FEATURES

Dr Donald Lamont Interview
29 December, 2022 Highly respected and globally known, Dr Donald Lamont has for decades helped to lead the charge on health and safety in underground environments and working. He talks to Julian Champkin.
  • Marine shaft construction with outfall tunnel connection
    The Musaimeer outfall project in Qatar had many interesting technical aspects and construction challenges. In this feature, the second feature of the project by Gary Peach, and along with Khalid Saif Al-Khayareen, the works needed to build an offshore shaft that would be intercepted by a TBM, then to be buried, are discussed.
  • Key points in artificial ground freezing techniques
    Artificial Ground Freezing (AGF) was the focus of a key presentation earlier this year to ISSMGE’s TC204 symposium, in Cambridge, UK. Geotechnical consultant Vittorio Manassero reviewed and discussed the method in the presentation to delegates.
  • Ensuring the seals on immersed tunnels
    Use of rubber seals to make immersed tunnels watertight was the focus of a talk by Nicas van den Brink of Trelleborg to BTSYM/TAIym in 2020. Points covered are discussed plus a project update.