Search Results: 'Black '

Ensuring the seals on immersed tunnels
28 December, 2022
Use of rubber seals to make immersed tunnels watertight was the focus of a talk by Nicas van den Brink of Trelleborg to BTSYM/TAIym in 2020. Points covered are discussed plus a project update.

Tunnelling Under Operating Highways and Railways: Part 2
28 December, 2022
Keivan Rafie and Gary Kramer of Hatch present the second of their two-part look at lessons in planning and constructing tunnel crossings with shallow cover under live transport corridors.

UCA Award winners announced at NAT 2022
24 June, 2022
The winners of this year’s UCA Awards were announced at the North American Tunneling Conference in Philadelphia this week.

An improving technology
22 April, 2022
Once described as a ‘black art’, soil conditioning is today a proven engineering technique. But the question remains, says Alessandro Boscaro of Mapei, of how to attain good technical performance while achieving acceptable environmental sustainability?

GIVE IT YOUR BEST SHOT!
14 April, 2022
Take your tunnelling best …be published …and win a prize!

A long line of success
14 April, 2022
Dean Brox of Dean Brox Consulting reviews the benefits and successes associated with precast concrete tunnel linings when used for hydropower tunnels

Ivor Thomas Interview
21 February, 2022
Past BTS Chair Ivor Thomas has spent a lifetime in civil engineering construction. He spoke to Julian Champkin about the past and future of tunnelling, the need to enthuse the public – and the exciting challenges that the new generation of tunnellers will face

Taking the softer approach
28 January, 2022
As a non-engineer, my knowledge of tunnelling would have been undeniably poorer without my well-thumbed copy of ‘Introduction to Tunnel Construction’ by Chapman, Metje and Stärk. Thus invaluable ‘bible’ of a book, with its hugely ambitious scope, has been my trusted reference over the years, guiding me ever so gently through the difficult ground of tunnelling.

Excavation on longest road tunnel completed
25 January, 2022
Drill and blast excavation has been completed on the 14.5km-long new Zigana twin-tube road tunnel which looks set to become the longest in Turkey and Europe.