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Excavation completed on Istanbul’s M9 metro
Istanbul Metropolitan Municipality has announced the completion of excavation on the twin tunnels of the city’s Ataköy-İkitelli M9 metro line. A ceremony to mark the end of excavation was attended at the breakthrough site by Turkish president Ekrem İmamoğlu.
Metro AI air system may reduce Covid-19 risk
Transports Metropolitans de Barcelona (Barcelona metro) is about to implement a pilot smart ventilation control system designed to improve environmental quality, hygiene and passenger comfort. This follows a previous scheme undertaken on Line 1 to demonstrate the importance of dynamic ventilation control which was successful in lowering ambient temperatures.
TBM breaks through on Brenner exploratory tunnel
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.
Three tunnels favoured for Prague ring road
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
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
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
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
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
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
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
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
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
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
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
‘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
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
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
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.
Bids invited for Kashmir road tunnels
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.
Design teams prepare for possible tunnel to replace Seattle bridge
Seattle Department of Transportation (SDOT) is finally including the possibility of a tunnel to replace the rapidly deteriorating West Seattle High-Rise Bridge which is showing exponential cracking growth. Earlier this month, SDOT made an addendum to its original Request for Qualifications (RFQ) for the bridge’s replacement that allowed for ‘other replacement alternatives’.