Tunnel boring machines have been in operation for over 200 years and they operate on the same basic principles today as they ...

The tunnelling shield was brought in for work once the ... The final construction was completed by 1842 and the Thames Tunnel was officially opened on March 25, 1843. Measuring 396m in length ...

China's intelligent shield tunnelling technology has been successfully implemented in the Chongtai Yangtze River Tunnel, marking an advancement on the Shanghai-Chongqing-Chengdu High-Speed Railway ...

Later tunnels under the Thames improved upon this ... used in the construction of the Channel Tunnel. TMBs have a function similar to the tunneling shield, but in this case, a mechanical spinning ...

King Charles has told workers at the Thames Tideway ... The tunnel is 7.2m in diameter, the equivalent of three London double-decker buses, and needed four giant tunnelling machines to excavate ...

It was for this project that Greathead built a 'tunnelling shield', based off Barlow's design, which in turn took inspiration from Marc Brunel's earlier Thames Tunnel contraption. Greathead's ...

It will run adjacent to the Blackwall Tunnel, built in the Victorian era, which takes drivers from near the O2 Arena under the River Thames to the East India Dock Road in Blackwall. The Silvertown ...

Chongtai Yangtze River Tunnel shield tunnelling site. Credit: China Railway Tunnel Group/Business Wire. China’s intelligent shield tunnelling technology has been successfully implemented in the ...