Features Archive

Archive of features from the global tunnels industry

Features By Date

June 2022


Jinxiu Yan – Interview
24 June 2022 The International Tunnelling and Underground Space Association (ITA) is the organisation that represents the tunnelling industry to the world. Its president since 2019 has been Jinxiu Yan. Here she speaks to Julian Champkin about her background, her role and her hopes for the ITA

Keeping hold of the natural balance
24 June 2022 Careful groundwater management was vital to build Copenhagen’s metro and, elsewhere, dewatering is taking on more tunnelling challenges. Report by Patrick Reynolds

Strategies for dewatering
24 June 2022 Dr Toby Roberts of WJ Group outlines the various dewatering strategies that are possible for cross passages, connection tunnels, caverns and adits

A new approach to tunneling
24 June 2022 The complexity, cost and risk of tunnelling can be reduced by introducing radical new methods, writes Patrick Lane-Nott, Director of Engineering at hyperTunnel

Harding prize yields another worthy winner
24 June 2022 Chris Barrett, a young civil engineer working with BAM Nuttall on Tideway’s Western Section C405 has won the British Tunnelling Society’s Harding Prize 2022 for his paper ‘The Planning and Construction of Main Line Tunnel B Connection Tunnel’ It is reproduced below by kind permission of the author

Update on Metro Projects in Europe and Asia
22 June 2022 R Pandita and M Rehbock-Sander (both of Amberg Engineering) presented this paper at WTC2020 Malaysia and describe selected aspects of European and Asian metro projects, including geotechnics, construction, safety, ventilation and risk

Nat – Back to Rock
22 June 2022 The biennial NAT tunneling conference will take place at the Philadelphia Marriott Downtown in Philadelphia, US on 19-22 June. Here follow a few tips to get the best out of the event

May 2022


Differences between tunnelling and mining
23 May 2022 Having worked on both mining and tunnelling projects, mining and underground infrastructure engineer Konstantinos Bastis looks at the differences between the two disciplines

Spraying the word – Interview - Tom Melbye
23 May 2022 Tom Melbye has become a tunnelling legend. He has transformed the technology and application of sprayed concrete to make it the practical and efficient tunnel support and lining that it has become. Julian Champkin talked to him

Safety during track refurbishment in tunnels
23 May 2022 Technical journalist Roland Herr gives an overview of occupational health and safety for track refurbishment in German tunnels, based on a presentation by Jens Kegenhoff and Patrick Schneider of CFT Compact Filter Technic given at STUVA 2021

Structures to intercept pile loads
23 May 2022 Cate Anthony was runner up in the BTS Harding Prize 2021 with her paper ‘The Design and Construction of Pile Interception Load Transfer Structures at 6-8 Princes Street for Bank Station Capacity Upgrade’

April 2022


Tunnel to restore snowdonian landscape
22 April 2022 An area of outstanding natural beauty, Snowdonia is scarred by unsightly pylons and overhead high-voltage cables. They will now be removed and placed in a new tunnel that forms part of a visual improvement project. Julian Champkin reports

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?

Positive moves for tunnelling sustainability
22 April 2022 Moves to deliver sustainability in tunnelling are underway on multiple fronts, including a focus on carbon reduction. Report by Patrick Reynolds

Tunnels and stations that should be deeper
22 April 2022 Dr N Barton (Nick Barton & Associates, Oslo) and M Abrieu (CVA Consortium, São Paulo) expose the false economies and dangers of shallow tunnelling for metros in urban areas, arguing that deeper tunnels and longer escalators are well worth the extra cost

Notes on compressed air working – Part 2
22 April 2022 Following on from his Part 1 article which appeared in the March 2022 issue of T&T, Stephen Doran concludes his discussion of hyperbaric interventions by looking at three major international projects on which they were deployed

In praise of the engineer’s art
22 April 2022 As well as being outstanding engineers, Marc Brunel and his son Isambard were also talented watercolourists. Now, the Brunel Museum in London has launched an appeal to bring to public attention some of these beautiful art works. George Demetri reports

Inspired through meaning
14 April 2022 Keivan Rafie looks at why many engineers have recently joined the so-called ‘great resignation’ and suggests that something more than a pay cheque and stable job may be needed

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

TBM challenges on a demanding sea outfall
14 April 2022 Gary Peach, project manager and consultant with Mott MacDonald (Doha, Qatar) discusses the challenges and management deployed to overcome and successfully complete what has been hailed as the Middle East’s longest storm and groundwater tunnel