Latest from Tunnels and Tunnelling
Keeping hold of the natural balance
Careful groundwater management was vital to build Copenhagen’s metro and, elsewhere, dewatering is taking on more tunnelling challenges. Report by Patrick Reynolds.
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Strategies for dewatering
Dr Toby Roberts of WJ Group outlines the various dewatering strategies that are possible for cross passages, connection tunnels, caverns and adits.
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A new approach to tunneling
The complexity, cost and risk of tunnelling can be reduced by introducing radical new methods, writes Patrick Lane-Nott, Director of Engineering at hyperTunnel.
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Pre-cast segments forming HS2’s first ‘green tunnel’ are being tested after quality issues were identified in “a few segments”.
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Implenia/Frutiger wins contract for Gotthard road tunnel main northern section
A consortium of Implenia and Frutiger has been awarded the contract for the main northern section of the Gotthard road tunnel’s second tube.
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Four new jobsites started for Italian rail projects
Webuild has started construction on four work sites in southern Italy to build 83km of new railway, including tunnels.
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Ministerial endorsement clears way for SRL planning approvals
The first stage of Victoria’s biggest ever infrastructure project – Suburban Rail Loop (SRL) East – is a significant step closer following ministerial endorsement of an independent planning panel’s key recommendations.
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Concrete segment production completed for Snowy hydro dry access tunnels
Australia’s Snowy 2.0 precast factory has completed manufacture of all concrete segments for the hydro scheme’s 5.6km of dry access tunnels.
LATEST FEATURES
SCAUT, the Swiss Centre of Applied Underground Technology, is pioneering new methods and uses for underground spaces. Veronika Petschen is its newly-appointed managing director. She spoke to Julian Champkin to explain her vision for SCAUT and for future uses of the ground beneath our feet
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Welcome back to WTC
The industry is on a countdown to meeting up again at ITA’s World Tunnelling Congress, held this year in Copenhagen, hosted by the Danish Society for Tunnels and Underground Works (DFTU). T&T offers a first preview
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Research to reduce carbon in SCL
Research recently complete on low carbon sprayed concrete (LCSC), including work for HS2,is summarised by participants Chris Peaston of Peaston Concrete Consultancy, Chris Goodier, Sergio Cavalaro and Zhi Hu of Loughborough University, Michael Sataya of Arup, Stuart Manning of Shotcrete Services, and John Reddy of Ecocem
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Sightline on sustainability
Alun Thomas, of All2plan Consulting, looks at ways sustainability could be achieved in tunnelling through innovation, such as permanent sprayed concrete linings (PSCL) and composite shell linings (CSL)
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Low Carbon, High Ambition in Paris
Grand Paris Express is striding forward for tunnelling into a low carbon future using concrete tunnel segments on Lot 16.1, as described by Benoit de Rivaz of Bekaert
