Latest from Tunnels and Tunnelling
A discussion on the latest trends and technologies for small-diameter slurry mechanised tunnelling in rock. This article is based on two papers by Herrenknecht engineers – ‘Rock tunnelling in small diameter: latest trends and technologies’9, and ‘Slurry pipe jacking in hard rock: Pushing boundaries for sustainable infrastructure’Read more
The Gateway Development Commission has selected its delivery partner for the Hudson Tunnel Project (HTP).
TBM breaks through on longest HS2 tunnel
HS2’s first TBM – which launched almost three years ago – has broken through at the end of her 16km journey under the Chilterns, excavating the longest tunnel on the rail project.
WTC2025 call for papers opens March 1
The call for abstracts for the World Tunnel Congress 2025 opens on Friday.
HS2 launches third TBM in London
HS2’s London Tunnels contractor, Skanska Costain Strabag (SCS) joint venture, has launched a third TBM.
Silvertown Tunnel opening brought forward
The opening of London’s Silvertown Tunnel has been brought forward, a year after it was announced the programme had been pushed back.
Sika is launching a new reduced carbon backfill grout for TBMs, called Sika® Stabilizer-7100 TBM. Mike A. Sposetti, Global Technical Manager (TBM), Underground Construction with Sika Group AG explains the background and provide details
Focus on active management
Three themes among many at the 10th International Symposium of Tunnel Safety and Security (ISTSS), held in Norway last April, were focused on active management – of Safety, Emergency and Evacuation in underground transport. But while themes exist as do disciplines and specialisms, there was also a message of whole systems thinking – to appreciate and work with lies beyond your own discipline for the greater, safer, good
Salisbury crash report
The findings of a study into the train collisions that left carriages jammed inside a tunnel portal near Salisbury in England, in 2021, have been published by the UK’s Rail Accident Investigation Branch (RAIB).
Making Headway on Nepal Headrace
The Robbins double-shield TBM is making good progress despite tough geology and challenges in the Himalayas on the headrace tunnel for the Sunkoshi Marin multi-purpose project, in Nepal.
Driving slurry rock tunnelling in small diameters
A discussion on the latest trends and technologies for small-diameter slurry mechanised tunnelling in rock. This article is based on two papers by Herrenknecht engineers – ‘Rock tunnelling in small diameter: latest trends and technologies’9, and ‘Slurry pipe jacking in hard rock: Pushing boundaries for sustainable infrastructure’