Tunnelling - Articles and news items
Industry news • 20 February 2017 • Katie Sadler, Eurotransport
Two giant boring machines have been lowered 20 metres below ground in preparation for tunnelling work on the Northern Line Extension.
Industry news • 14 June 2016 • Katie Sadler, Digital Content Producer, Eurotransport
A full size mock-up of the new Riyadh Metropolis train has been unveiled by Alstom at a ceremony which also highlighted the completion of the Riyadh Metro Green line excavation works.
Industry news • 9 June 2016 • Katie Sadler, Digital Content Producer, Eurotransport
Transport for London (TfL) has launched a procurement process for a new training provider at the Tunnelling and Underground Construction Academy (TUCA) in Ilford, east London
Industry news • 11 March 2016 • Katie Sadler, Digital Content Producer, Eurotransport
Two new 650 tonne tunnel boring machines (TBMs) have been unveiled ahead of work to build the Northern Line Extension tunnels under south London.
Industry news • 14 September 2015 • Katie Sadler, Digital Content Producer, Eurotransport
Upgrade work at Victoria Tube station hits significant milestone with completion of tunnelling work linking the new North ticket hall with the existing South ticket hall.
Issue 1 2015 • 12 March 2015 • Alexander Pischon & Uwe Konrath, Joint General Directors, KASIG
Work has recently started on the 2km-long tunnel ducts under Karlsruhe’s Kaiserstraße which will accommodate the light-rail tunnel section as part of the overall Kombilösung project. The cutting head of tunnelling machine ‘Giulia’ is now continuously driving below Karlsruhe in a westward direction. For Eurotransport, Alexander Pischon and Uwe Konrath – joint General Directors of KASIG, the company behind building the new infrastructure – delve into the project’s tunnel construction details…
Issue 3 2013 • 3 July 2013 • Erik Skotting, Director (COO), Metroselskabet
The first Tunnel Boring Machine (TBM) is ready to start tunnelling on Copenhagen’s new metro line – the City Circle Line, or Cityringen. The Cityringen contract was awarded in January 2011 and the main construction work started in the following summer. The contract covers 15.5km of twin-bored tunnels, 17 stations and three shaft structures as well as a new Control and Maintenance Centre. In summer 2013, the first TBM will start the tunnelling from one of the three shafts – 40m underground at the work site in Nørrebroparken.
Issue 6 2012 • 22 January 2013 • Radek Hončl, Project Manager, Capital Projects Department, Prague Public Transport Company (DPP)
The west end of Prague’s metro line ‘A’ is being extended in a construction project estimated to cost CZK 21.13 billion (expected total capital cost including indexing). The section known as Metro Line V.A is located in the northwest of Prague and will run from Dejvická Station via four new stations: Červený Vrch (Bořislavka), Veleslavín, Petřiny and Motol. After several appeals against the building of the section were addressed, construction began in January 2010. Operation of the new section is expected to start in late-2014.
However, the project’s capital cost had to be reduced and so the general designer was asked to submit cost-cutting measures which were mainly applied to the construction of Petřiny Station.
For the first time in Prague’s metro system, single-track tunnels have been bored using Tunnel Boring Machine (TBM) technology and benefiting from the latest tunnelling machines. Station tunnels and two-track running tunnels are being built using the New Austrian Tunnelling Method (NATM) using access tunnels to transport all material.
The project also includes construction of three bus terminals for urban lines, and zoning and construction permit applications have been submitted for a Park & Ride facility to meet the aim of terminating surface transport further from the city centre.
Issue 6 2011 • 3 January 2012 • Haukur Ingason, Professor of Fire Protection Engineering at the Department of Fire Technology at SP Technical Research Institute of Sweden and Anders Lönnermark, Senior Research Scientist at the Department of Fire Technology at SP Technical Research Institute of Sweden
In September 2011, the Swedish METRO project finalised a large scale test programme in an abandoned railway tunnel. The objective of the METRO project is to improve safety in underground metro systems and to explore differences in the fire behaviour of the carriage using different types of interior materials. Further, the role of passenger luggage in the fire development was investigated. The test programme included both fire and explosion tests. The results are still undergoing analysis, but the test programme has already generated lots of new interesting information to report on. One thing that has become clear is the importance of the choice of lining material and the effects of passenger luggage on the fire spread.
About the large scale tests
A total of four tests were carried out in the 276m-long Brunsberg tunnel outside Arvika, Sweden. The abandoned tunnel was taken out of service when a new tunnel was constructed to reduce the sharpness of a bend in the route. Three fire tests using liquefied fuel as the ignition source were carried out first. The first test was a small pan with diesel oil mounted under the carriage while tests two and three were simulated arson attacks inside the carriage using petrol poured on a seat. A total of two carriages were used for the three fire tests.
The two TBMs built by German company Herrenknecht AG will arrive in October…
Issue 4 2011 • 18 August 2011 • Dr. Fathi Tarada, Co-Chairman, World Road Association Working Group on ‘Air Quality, Fire and Ventilation’, Managing Director, Mosen Ltd and Eurotransport Editorial Board Member
The lorry fire that broke out on 26th July 2011 in the Brynglas Tunnel in South Wales caused severe traffic disruption for four days, and this has underscored the potential damage associated with tunnel fires. Could better design reduce the risks? The World Road Association (PIARC) will shortly be publishing a new report on design fires for tunnels, which will go some way towards clarifying how the tunnel fire risks can be assessed and managed. In particular, the report provides updated information on fire heat release rates and the timedevelopment of vehicle fires, based on experimental tests. However, for those seeking instant answers to design fires in tunnels, the report delivers some rather sobering conclusions: a universal design fire cannot be specified, because the probability and size of any fire is inherently unknown. The choice of design fire therefore needs to be made with some care – and there will always be a residual risk that a real fire will be greater than the design fire.
Transport plays a crucial role in supporting European integration and ensuring a high level of wellbeing amongst Europe’s citizens. Efficient infrastructure for transport is vital for EU competitiveness for reducing costs and providing a good service.
Moreover, European integration requires sufficient access to EU transport networks for all regions. Therefore, the European Union must aim to promote the development and running of Trans-European Networks as a key element for the creation of the internal market, and the reinforcement of economic and social cohesion, as expressed in the treaty establishing the European Community, OJ C 325, 24/12/2002, articles 154, 155 and 156.