Latest from Tunnels and Tunnelling
New generation FRC segments
Benoit de Rivaz, Technical Manager, Bekaert, France explains how the inclusion of steel fibres in precast concrete segments can bring environmental, economic and durability benefits
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Handling the pressure
Christian Wieczorek, Managing Director of AST Bochum and engineer/technical writer Roland Herr discuss ways of connecting hoses safely to modern compressors and look at new solutions
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Transferable asset
A technology developed for land-based tunnelling has found a new and expanding niche in bringing off-shore energy nearer to its consumers. Julian Champkin reports
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Positive start to Vancouver subway extension
Having only begun last month, construction is now in full swing on Vancouver’s Broadway Subway Project – a 5.7km extension of the Millennium Line that will run almost entirely underground.
Having only begun last month, construction is now in full swing on Vancouver’s Broadway Subway Project – a 5.7km extension of the Millennium Line that will run almost entirely underground.
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Norway’s longest subsea tunnel is part of mammoth road scheme
NPRA – the Norwegian Public Roads Administration – is inviting contractors, subcontractors and consultants to an online information meeting concerning the E39 Ålesund-Molde road improvement project which includes the construction of the country’s longest subsea tunnel. The meeting will be held over Microsoft Teams on 21 June.
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Sky-high salaries agreed for West Gate tunnellers
Following the successful conclusion of a pay deal between the contractor and a local building union, tunnellers working on the US$5.2bn West Gate Tunnel project in Melbourne, Australia, look set to earn more than US$240,000 a year.
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Bids invited for Phase 4 section of Delhi Metro
Delhi Metro Rail Corp (DMRC) is inviting international bids for the design and construction of twin TBM-bored tunnels, cut and cover, plus underground ramp and other tunnel-related works for package DC-05 of Delhi Metro’s Phase 4.
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Twin-tunnel win for Webuild consortium
An Italian consortium comprising Webuild (70%) and Pizzarotti (30%) has been announced best bidder for the US$445m design-build Orsara-Bovino contract which includes significant tunnelling.
LATEST FEATURES
Writing for the Swiss Federal Office of Energy, Dr Benedikt Vogel looks at recent research aimed at enabling better and more efficient methods of extracting geothermal energy
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Seeing the invisible
Dr Andrius Rimsa, Loxus Consulting and Mikko Simola of Loxus 3D Tunnel inspections discuss the inspection and maintenance of flooded rock tunnels using ROVs with 3D sonar
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Forensic delay analysis for dispute resolution
Dimitrios Tousiakis, delay expert and Director of HKA Dubai, looks at applying Linear Scheduling Methodology tools to simplify forensic delay analysis for dispute resolution
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Crossing the roads
The Hampton Roads Bridge-Tunnel expansion scheme will bring new life to the most congested route in Virginia. Julian Champkin reports
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Groundwater control for tunnelling projects
Dr Martin Preene discusses the various dewatering techniques that are available for tunnels and shafts where uncontrolled groundwater ingress could cause disruption and increase costs
