Latest from Tunnels and Tunnelling


Deadline approaches for WTC 2021 abstracts
29 May, 2020 Submission of abstracts for WTC 2021 is still open but the deadline of Tuesday June 2 2020 is only days away. ITA-AITES has advised potential authors that abstracts should have a maximum 200 words and relate to the general topics of the conference. Abstracts can only be submitted online.
  • Tunnel-digging robot mimics earthworm action
    A tunnel-digging robot that mimics the rhythmic movements of earthworms through soil is being developed by the US-based General Electric Company (GE) as part of the Underminer programme. The machine forms part of a recently awarded 15-month USD2.5m grant through DARPA – the Virginia-based Defense Advanced Research Projects Agency. Although the robot’s operating principles could eventually have applications in the commercial sector, it is currently intended to aid the US military in rapid tunnel boring operations.
  • Tunnel construction completed at Peace River site
    BC Hydro has announced a new milestone on the Site C Clean Energy project located on the Peace River in British Columbia, Canada. Two 750m-long diversion tunnels are now finished, as are four gate structures located at the tunnels’ upstream and downstream entrances. In September 2020, the 11m-diameter tunnels will be used to reroute the river around the dam site, allowing for the construction of an earth-fill dam across the main river channel.
  • Epiroc wins large order for Chuquicamata
    Underground loaders, face drill rigs, rock-bolting rigs and mine trucks, as well as several years of technical support and training, are all part of a USD20m+ order won by Epiroc in April. The order came from Codelco for use at the Chuquicamata underground mine project in northern Chile.
  • Terratec team TBMs advance in Istanbul
    Good progress is being marked on Istanbul’s 13km-long Ümraniye-Ataşehir-Göztepe (UAG) metro line which, when finished, will form the second north-to-south rail corridor under the Anatolian side of the city. The first of four new Terratec 6.56m-diameter earth pressure balance (EPB) TBMs successfully completed its first intermediate breakthrough into Atasehir station on May 20.


Take two
26 May, 2020 Brent Scarbrough & Company stepped in to finish a job under an active highway and a high-pressure gas main. Chad Cox reports on jack and bore work in Florida
  • Wet weather ready
    The Don River and Central Waterfront Project will help improve Toronto’s waterways by reducing CSOs. The project team provides an update on the Coxwell Bypass Tunnel
  • Burnhamthorpe Water Project
    Nicole Robinson reports on Mississauga’s efforts to improve its water and sewerage network, ahead of LRT construction.
  • NATM in Toronto
    As metro stations are located deeper underground construction techniques are meeting new challenges. Tony Tomory, country director, WJ Groundwater Canada, discusses dewatering for the Eglinton Crosstown project.
  • The Avon House Case
    Paola De Pascali talked with Paul Perry, associate director of Hewson consulting Engineers, about the infamous case of Avon House at the Bond Street Station Upgrade (BSSU) project and how it represents an example of sensitive building, which required a detailed investigation and mitigation measures