Latest from Tunnels and Tunnelling


VDOT gives green light for HRBT construction start
18 September, 2020 A Notice to Proceed (NTP) has been issued by the Virginia Department of Transportation (VDOT) for construction work to start on the US$3.8bn Hampton Roads Bridge-Tunnel Expansion project in Virginia, US.
  • New Sandvik simulator is designed for safer training
    Underground drill operators and maintenance teams can now train in a safer environment thanks to the introduction of the latest Sandvik training simulator. Sandvik says it has developed Digital Driller to improve performance in underground hard-rock drilling, whether in tunnelling or mining applications.
  • IEM confirms WTC2020 congress format
    Malaysia’s Institution of Engineers (IEM) has outlined the format of the 2020 World Tunnel Congress (WTC2020) which has been transferred to a full digital platform due to safety concerns over the coronavirus pandemic. The decision to go virtual by streaming the programmes via a secured digital platform was taken in conjunction with ITA-AITES.


Tunnel of steel nears completion
21 September, 2020 Another significant milestone has been achieved in the project to repair the longest tunnel in the world
  • A lighter look at belting
    Jason Schneider of Tennessee-based Cobra America outlines the salient features of a new type of conveyor belt material claimed to result in economies and greater safety for the work force
  • Building the mixed-ground mega tunnel
    Roberto Gonzalez of The Robbins Company outlines the challenges and solutions on Mexico’s Emisor Oriente, one of the country’s most specialised projects with possibly the toughest, most complex conditions ever encountered by EPB TBMs
  • Muck disposal on a grand scale
    Tideway (the so-called ‘super sewer’) is the biggest water infrastructure project in Europe and aims to rid the River Thames of millions of tonnes of raw sewage inflows every year. Julian Champkin reports on the progress so far
  • Ground freezing
    Artificial ground freezing is an environmentally-friendly construction technique which provides temporary excavation support and groundwater control during tunnel construction. This method comes into its own when tunnels and shafts need to be built in difficult geological and hydrological ground conditions.