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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.

Arena International Events
03 July, 2020

Three tunnels favoured for Prague ring road
03 July, 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
03 July, 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
02 July, 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
01 July, 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
01 July, 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
30 June, 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
30 June, 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
26 June, 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
26 June, 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
25 June, 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.

Excavation work starts on US neutrino facility
25 June, 2020
US particle physics and accelerator laboratory Fermilab has announced the start of blasting for the Long-Baseline Neutrino Facility at the Sanford Underground Research Centre in Lead, South Dakota, US.

Silvertown Tunnel blasted by critics
24 June, 2020
‘Incompatible with London’s plan to become carbon-neutral by 2030’ – that is the damning verdict of a new report from UK-based Transport Action Network on the proposed £1.2bn Silvertown Tunnel in East London.

TBM holes through on Koralm KAT 3 contract
19 June, 2020
KORA, a 9.87m-diameter multi-mode Herrenknecht TBM, has achieved final breakthrough on the 10km north bore of Austria’s 32.9km-long (20.5 miles) Koralm Tunnel which, when completed, will be one of the world’s longest transport tunnels.

Still time to enter the ITA Awards
18 June, 2020
Time is quickly running out to enter the ITA Tunnelling and Underground Space Awards which close on June 30. Due to the ongoing coronavirus pandemic, the event will be staged as a virtual one at the end of the year, although the exact date has yet to be confirmed.

Finland-Estonia tunnel faces years of delay
16 June, 2020
Following an unexpected decision by Finnish policy makers, the undersea tunnel proposed to link Finland with Estonia could face a delay of up to seven years. This follows a vote by Helsinki-Uusimaa Regional Council in favour of an alternative alignment to that proposed by the developer.

Tunnelling Resilience
11 June, 2020
The question now on almost everyone’s lips is how are our professional activities going to change after the easing of lockdowns,

Bids invited for Kashmir road tunnels
11 June, 2020
India’s government announced on June 10 that it is accepting fresh bids for the construction of the Zojila Tunnel in Jammu and Kashmir in the north of the country. Located on the Sonamarg-Kargil section of National Highway-01 from Srinagar to Leh, construction of the tunnel will allow all-year travel across the Ladakh region.

A good dose of fibre
11 June, 2020
Steel fibre-reinforced concrete and its historic use in metro tunnels was the subject of discussion at a seminar hosted by steel-fibre maker Bekaert. Paola De Pascali reports