Latest from Tunnels and Tunnelling


LATEST NEWS

Sydney Metro CBD breakthrough
21 August, 2019 Australia – The first TBM has broken through into the Pitt Street metro station in Sydney’s central business district (CBD). TBM ‘Nancy’, a double shield hard rock gripper machine manufactured by Herrenknecht has tunnelled 6km through sandstone and shale since launching from Marrickville in October. TBM ‘Mum Shirl’, excavating the parallel tunnel, is a few hundred metres behind.
  • Crossrail issues three-month progress update
    Great Britain – Crossrail has released a progress update covering the last three months. The client has committed to regular updates, following heavy criticism for budget and schedule overruns.
  • Second Terratec TBM delivered to Rio Subterraneo a Lomas
    Argentina – The second of two new 4.66m diameter Terratec EPBMs has been delivered for a 13.5km potable water tunnel system, in Buenos Aires. Factory acceptance for the TBM, which was manufactured for the Río Subterráneo a Lomas tunnel, took place in July.

LATEST FEATURES

Chelsea to battersea tunnel surface settlements
16 August, 2019 Monitoring of ground surface movements induced by the construction of the Chelsea to Battersea Pipeline Tunnel project is presented as part of this case study. The surface settlements induced by the shaft construction have been analysed and compared with current methodologies and information from recent projects. Movements from excavation and construction of the tunnel are also analysed, and back-analysis of volume losses is presented. The authors are Veriuska Ortiz Lovera, geotechnical engineer, Mott MacDonald; Andrew Hejdner, project manager, Cadent Gas; James McCaffrey, construction manager, Skanska UK Construction; and Mohammad Arasteh, senior tunnel engineer, Mott MacDonald
  • Get the muck out
    Following reader requests, Amy Duncan of Dos Santos International has written this article on the development of the sandwich belt high angle conveyor concept, which has recently been employed on the Grand Paris Express project
  • Underground heat recovery
    Matt Houchin, assistant engineer – tunnel ventilation and operations, WSP, presents this paper on the potential for heat recovery from tunnels

LATEST Blogs

Planning for the twenties
14 August, 2019 In this issue of Tunnels and Tunnelling International Paola De Pascali reports from the World Tunnel Congress, which was held in Naples in May and saw a number of publications from working groups and committees. The ITA Committee for Technology (ITAtech was particularly prolific.
  • Wisdom of the Faroes
    As I write, the Tunnels and Tunnelling team is preparing to leave for the Rapid Excavation and Tunnelling Conference in the USA, the world’s richest, and one of its largest countries. It always seems to have a megaproject underway or in the pipeline.
  • Preserving old and new
    Joining WTC 2019 in Naples was a full immersion into the Italian art of tunnelling. The plan was to show how engineering and innovation meet archaeology, architecture and art. The beauty of Naples is not only above ground, but it is a cradle of underground works, which unveils a network of Greek and Roman tunnels and underground structures dating to the fourth century BC.
  • Underground Movement
    Tunnels and Tunnelling turns 50 this month. Here follows the magazine’s first ever editorial, reprinted in tribute to the founding editor:
  • Records not worth breaking
    In June the tunnelling industry will gather in Chicago for its annual conference, a city that has invested heavily in stormwater management.

LATEST EVENTS

  • ICUEE
    01 Oct 2019 - 03 Oct 2019