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TBM breaks through on Brenner exploratory tunnel 07 July, 2020
Final breakthrough has occurred on the 16.5km-long exploratory tunnel of the Tulfes-Pfons section of the Brenner Base Tunnel (BBT), Austria. Following assembly inside a cavern 3.5km deep inside a mountain, the 7.9m-diameter hard rock, Herrenknecht open-gripper TBM (‘Gunther’) started mining on 26 September 2015 from Ahrental eastwards to Steinach, drilling through hard rock to break through on July 6 2020.
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Three tunnels favoured for Prague ring road
Friday, July 03, 2020 Prague could see three tunnels constructed on the north-eastern segment of its 83km-long outer ring road. The city council wants to see the section between Brezineves and Satalice tunnelled as far as possible.
Veteran TBM holes through on Tideway connection tunnel
Friday, July 03, 2020 TBM Charlotte has completed her drive on an important connection tunnel that forms part of Thames Tideway, London’s 25km-long ‘super sewer’. Holing through on 2 July 2020 at Carnwarth Road, Fulham, southeast London, the 3m-diameter machine has been mining at average depths of around 30m on the Frogmore Connection Tunnel which has been excavated in two parts.
TBM sets new southern hemisphere record
Thursday, July 02, 2020 Auckland, New Zealand has witnessed a new pipejacking record for the longest single drive in the southern hemisphere by a TBM with a diameter greater than 3m.
Forget WTC 2020, look forward to Copenhagen 2021
Wednesday, July 01, 2020 WTC 2020, the international conference for tunnelling held annually and due to have taken place in September in Kuala Lumpur, Malaysia, has been cancelled.
Ferrovial wins in Portugal
Wednesday, July 01, 2020 Spain-based infrastructure provider Ferrovial has been selected as preferred bidder in a two-part contract for the €288m (US$323m) expansion of Porto’s metro. The work involves first, extending the Yellow Line from Santo Olvido station by 3.5km, including the construction of a 770m tunnel, three stations and a viaduct.
Ward & Burke sets new Canadian microtunnelling record
Tuesday, June 30, 2020 Ward & Burke has successfully completed a record microtunnelling drive of 1,132m on the York Durham Sewage System (YDSS) Forcemain Twinning Project in Newmarket, Ontario. Completed on 8 June 2020, the drive breaks the Canadian distance record and the project’s own record of 950m set four days earlier into the same reception shaft.
Tunnel intransigence blocks Maglev progress
Tuesday, June 30, 2020 Work has been delayed on a section of Japan’s US$84bn Tokyo-Osaka magnetic levitation (Maglev) railway by a seemingly immovable obstacle. The governor of Shizuoka prefecture is refusing to allow the excavation of a 9km stretch of a 25km tunnel in the Minami Alps.
Support growing for Great Lakes Tunnel
Friday, June 26, 2020 Following the March 2020 announcement confirming the selected contractors, and a recent ruling that the construction is constitutional, support for the US$500m Great Lakes Tunnel is growing.
Ceremony marks Terratec TBMs Buenos Aires start
Friday, June 26, 2020 Assembly has started in Buenos Aires on the first of two 4.66m-diameter Terratec EPB TBMs that will bore the Argentine capital’s Rio Subterraneo a Lomas tunnel. The 13km-long tunnel will form a key part of the multi-billion dollar Agua Sur water infrastructure project - the country’s largest such undertaking in 40 years - and provide fresh water for 2.5 million people in the Southeast Buenos Aires metropolitan district.
Candidates line up to host WTC 2023
Thursday, June 25, 2020 Athens is a lively metropolis full of classical wonder and style, but if the Greek Tunnelling Society (GTS) succeeds in its bid, the Greek capital will also host the ITA-AITES World Tunnel Congress (WTC) in 2023.

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