Latest from Tunnels and Tunnelling
A National Grid project to push a 5km pipeline under an estuary of global importance to wildlife has resulted in the world’s longest pipeline river crossing in a tunnel, safeguarding the UK’s gas supply for a century and earning a place in Guinness World Records. Julian Champkin reportsRead more
Drainage water from the Brenner Base Tunnel (BBT) could be used to supply sustainable energy to residential districts.
BTS unveils a new website
To complement its 50th anniversary celebrations, the British Tunnelling Society (BTS) has launched a new website to reflect the growing diversity of knowledge and services which it offers to BTS members and others interested in tunnelling.
Stonehenge scheme to be challenged in High Court
A High Court hearing granted recently to protestors will now allow scrutiny of the UK Department of Transport decision to approve the Stonehenge road tunnel and dual carriageway.
Trimble launches ‘fast’ 3D-scanning total station
Trimble has launched the SX12, hailed as the next iteration of the company’s 3D-scanning total station and said to provide ‘fast, efficient data capture’ for surveying, engineering and geospatial professionals.
Hudson Tunnel gets Biden funding boost
Trump administration policy, which had effectively blocked funding for the construction of a rail tunnel under the Hudson River, has been rescinded by the US Department of Transportation, thanks to a policy reversal inspired by the Biden presidency.
In the recent ‘BTS Hyperloop Challenge (Tunnels for Hyperloop)’ report undertaken on behalf of the British Tunnelling Society, Bill Grose outlined the basic requirements for Hyperloop infrastructure. The following is an extract from the report.
Pushing for victory
A National Grid project to push a 5km pipeline under an estuary of global importance to wildlife has resulted in the world’s longest pipeline river crossing in a tunnel, safeguarding the UK’s gas supply for a century and earning a place in Guinness World Records. Julian Champkin reports
Tunnel projects often use compressed air techniques to stabilise the tunnel face. Work in compressed air in tunnels – increasingly referred to as hyperbaric operations – began in the 1830s. Although Lord Cochrane obtained a patent for the concept of using compressed air to stabilise soft or loose-flowing ground at the face of an excavation, it was a Frenchman, Jacques Triger who is credited with first using the technique for shaft sinking in northern France. Around 1874, James Greathead designed a compressed-air shield to construct the Woolwich Tunnel in London.
Fire Performance of PC Segmental Linings
Explosive spalling in tunnel linings during fires is often attributed to vapour pressure build-up within the segments. In this article, Stephen Doran suggests that there is another factor at play which is more responsible for the phenomenon
West Link’s Korsvagen Challenges
Dr Klaus Rieker of Wayss & Freytag Ingenierbau discusses the various construction techniques and procurement methods used for tunnelling the Korsvägen Section of Gothenburg’s new West Link rail line