Latest from Tunnels and Tunnelling


TfL announces tunnelling completion at Bank
29 October, 2020 Transport for London (TfL) has announced the completion of tunnelling at Bank Underground Station – regarded as one of the busiest interchanges on the Tube network.
  • Avax Ghella Alstom win Athens Metro tender
    A consortium led by Avax and comprising Ghella and Alstom has won the tender for building the first phase (Section A) of Line 4 of the Athens Metro, hailed as one of Greece’s biggest public projects over the next decade. Construction is scheduled to begin in 2022.
  • HS2 reveals contemporary design for Kilburn vent shaft
    A strikingly contemporary design has been revealed by HS2 for its vent shaft headhouse and compound in South Kilburn, London. It is one of four that will provide ventilation and emergency access to the high-speed line’s 7.2km Euston tunnel.


Not going viral
23 October, 2020 Many feared the outbreak of Covid-19 would wreak havoc on the tunnelling sector so how has it fared during the coronavirus pandemic? Perhaps not as disastrously as feared. Julian Champkin investigates
  • Two-Way Tunnelling in Seoul
    Great Train Express (GTX) is a proposed high-speed commuter line with shared infrastructure that will connect new towns around the greater Seoul Metropolitan Area with the capital. It is the first project in Korea to use a large-bore TBM. Dr Warren Wangryul Jee, chairman and tunnel project manager of GTS-Korea, reports
  • Up the junction, round the bend
    While pushing a preformed portal box through an excavation has been done before, a Network Rail project demands that it be done on a curve – and that hugely increases the complexity. Julian Champkin reports
  • Extending the Tamoios highway
    Located mostly in Brazilian rainforest, the Tamoios highway and tunnel project is of critical importance to the Brazilian economy. It was the subject of the BTSYM talk in September given by project director Pedro Soares dos Anjos. Report by Divik Bandopadhyaya of London Bridge Associates
  • Automation, AI and the future of tunneling
    Modern, mechanised tunnelling methods have had an enormous economic, environmental and cultural impact globally. To sustain long-term growth in tunnelling operations, industry and academia are researching new technologies to better handle challenging conditions. Among these, automation and artificial intelligence have an essential and promising role in the future of underground construction.