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Crossrail learning legacy – ongoing impact
29 December, 2023
The knowledge pool from Crossrail will live on for education on project development and execution, including tunnel excavation and underground station construction works, after Transport for London this year decided to keep the online library of the project (now the Elizabeth line) free and available

Inspired outreach to youth
27 November, 2023
BTSYM’s collaboration with two training bodies recently gave school students some insight into working in the underground space sector. Report by Sandeep Singh Nirmal

Bob Ibell – Interview
27 November, 2023
Bob Ibell is a known and respected name is tunnelling. He has had major roles on the Tyne and Wear Metro, Piccadilly Line Extension to Heathrow T4, the Channel Tunnel, the Jubilee Line Extension and the Channel Tunnel Rail Link’s (CTRL, or High Speed 1 (HS1)) London Tunnels. He is a Past Chair of the BTS, winner of the James Clark Medal, delivered the Sir Harold Harding Memorial lecture, taught construction management on the MSc course at the University of Warwick, and a founder member of the tunnelling consultancy London Bridge Associates (LBA). He spoke to Julian Champkin

STUVA 2023
27 October, 2023
The STUVA conference takes place in Munich in early November and promises a packed programme with varied discussions plus a busy exhibition

Stronger for the Next 50 Years
26 September, 2023
To help deliver on the ambitious agenda that got him elected barely 12 months ago, ITA President Arnold Dix has had a whirlwind year of near non-stop global travel. As promised to the organisation’s gathering on the occasion of the World Tunnel Congress (WTC), in September 2022, in Copenhagen, Dix planned to act fast and relentlessly in pursuit of the mission that got him elected, unopposed. Since then, he has built momentum for speedy delivery, barely stopping on the way. Here, he outlines for T&T readers what has been achieved so far and what is coming next

Extending Access Possibilities
26 September, 2023
Preassembled, needing only a small footprint and able to self-extend during shaft sinking as well as remain for permanent use afterward, XL Industries’ XE5 mechanised access lift system has worked on some major tunnel projects

From Gold Mine to Hydroelectricity – Kidston Pumped Storage Project
26 September, 2023
At the annual joint BTS and MinSouth meeting, held on 9 February at the Institution of Civil Engineers, in London, Clare Önal – a Principal Engineer with the tunnels team of Mott MacDonald – gave a presentation on the conversion of an abandoned gold mine at Kidston in Queensland, Australia, to a pumped storage hydroelectric (PSH) scheme. Andrew Hindmarch, Senior Principal Tunnel Engineer of Mott MacDonald was the rapporteur

Grey cast iron linings – new structural insights
24 July, 2023
The Harding Prize Competition is named after the founder of the British Tunnelling Society, Sir Harold Harding, and is for entrants under the age of 33. Shortlisted papers were presented to the BTS evening meeting on 13 April, at the Institution of Civil Engineers, in London. Agustín Ruiz López, postdoctoral researcher with the Department of Civil and Environmental Engineering, Imperial College, London, was a runner-up in this year’s Competition with a paper entitled ‘New insights into the structural behaviour of grey cast iron tunnel linings’. It is published here with the author’s permission

Geopolymer concrete in tunnelling
24 July, 2023
At the monthly BTS meeting at the Institution of Civil Engineers, in London, in March 2023, John Day, Chief Technical Officer of Wagners EFC Pty Ltd, Charles Allen, Director of OTB Concrete, and Richard Sutherden, Engineering Director with Murphy for the HMJV (Hochtief- Murphy Joint Venture) provided perspectives on the use and future potential of geopolymer concretes, and the Earth Friendly Concrete in particular, in underground applications

Waste disposal: engineering the key nuclear challenge
24 July, 2023
Scientists agree that geological disposal is the best solution when considering the very long-term storage of high activity nuclear waste materials but to develop such a massive engineering project requires community buy-in from the get go. By Steve Reece, Head of GDF Siting at Nuclear Waste Services

Stories from 50 years of groundwater construction problems
26 June, 2023
For T&T, David Hartwell takes a long view to reflect upon construction challenges some tunnel projects experienced with groundwater. He was awarded the Skempton Medal by the British Geotechnical Association (BGA), in 2018, in recognition of his outstanding longterm contribution to understanding the interaction between groundwater and tunnelling. The BGA and BTS jointly heard his Skempton Lecture in February 2019

BIM in tunnelling - past, present & future
26 June, 2023
BIM enables unprecedented collaboration and information sharing in infrastructure development, yet better understanding of what it is, isn’t, and could be is needed, say Kurt Zeidler and Vojtech Ernst Gall, of Gall Zeidler Consultants

Antonia Cornaro – Interview
26 June, 2023
Antonia Cornaro is several things: a city planner, an expert in underground space at Amberg Engineering, a university lecturer to engineers, planners and architects, an author and also co-chair of ITACUS. Julian Champkin spoke to her

Rod Young – Interview
13 June, 2023
Rod Young is the Chair of the British Tunnelling Society (BTS). Unlike many of his predecessors, his speciality is in microtunnelling. He talks to Julian Champkin about the importance of small-bore, and his hopes for the post-Covid BTS

Alison Norrish Interview
27 March, 2023
It is fun to go deep – but don’t do it. We can make our tunnels watertight – but should we? And what’s wrong with a few cracks in a tunnel wall anyway? Julian Champkin talked to Alison Norrish, urban tunneller extraordinaire, who challenges views on what makes good underground engineering

Challenges and successes
27 March, 2023
A brief snapshot sample of large and small utility tunnelling challenges and successes across the globe over recent months

Dr Donald Lamont Interview
29 December, 2022
Highly respected and globally known, Dr Donald Lamont has for decades helped to lead the charge on health and safety in underground environments and working. He talks to Julian Champkin.

Design and construction of a cavern in downtown LA
31 October, 2022
Christoph Eberle reports on the BTS March evening meeting where Carlos Herranz, Tunnel Design Manager at Mott MacDonald, discussed the design and construction by sequential excavation of LA Metro’s largest underground cavern.

Joseph Gallagher Interview
26 September, 2022
Joseph Gallagher, known to one and all as Josie, began as a one-man band back in 1982 and is now chair of the UK’s biggest tunnelling company, the Joseph Gallagher Group. Julian Champkin interviewed him.

Flat or domed? Selection of shaft base slab geometry
26 September, 2022
Si Shen, head of tunnelling and geotechnics for TYPSA in the UK and Ireland, and in the BTSYM lecture in April put a focus on choice of base slab geometry in shafts