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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.