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| COMMENT EDITORIAL


EDITOR: Patrick Reynolds MEng, GMICE +44 (0)7890 122047


editor@tunnelsandtunnelling.com


FEATURE WRITER: Julian Champkin julian.champkin@tunnelsandtunnelling.com NEWS WRITER: Keren Falwell SUB-EDITORS: Katie Smith-Wong, Julian Turner DESIGNER/ART EDITOR: Martin Faulkner


ADVERTISING


TIME, TUNNELLER AND THE ENGINEER


Where did the Engineer go? The question is asked in a guest editorial that discusses what happened after this authoritative role went away, the challenges for time and cost performance that can arise for some projects – but not all, says BTS Chair Alastair Smith – and then offers a few proposals. Time has also demonstrated


the great evolution in safety on projects for tunnellers, such as with compressed air working. This month marks the 30th anniversary of the key regulations being introduced, and the journey up to that point is recalled and the further developments since discussed – plus a few spotlights on the scientific principles of compression, saturation and also the risks. Insights are courtesy of health and safety expert Dr Donald Lamont. In a further feature, time is a key


aspect of engineers’ – and perhaps more so infrastructure owners and operators’ – work in terms of inspecting more regularly. This is the case put forward in seeking more frequent routing checks of shotcrete-lined hydropower tunnels, as explained in a


Technical Note from consultant Dean Brox. Still with energy, this time


nuclear, a feature offers a briefing on the large-scale and fascinating engineering challenge of the design and construction of the marine tunnels for the cooling water system of the Hinkley Point C project, off the coast of south- west England. The task was made greater by the shafts being off- line from the tunnels, as told to a recent BTS meeting. This issue also provides an


overview of ITA guidance using Building Information Modelling (BIM) in mechanised tunnelling and conventional tunnel construction, respectively; and, casts a spotlight on the range of sizes of caverns for underground hydropower projects. We also preview two important


upcoming conferences by the BTS (6–7 October) and BTSYM (23 October). Tickets are on sale.


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GENERAL


PUBLICATION MANAGER: Martin John +44 (0)115 661 0021 | +44 (0)7821 542 546 Martin.John@btmi.com


MANAGING DIRECTOR: Victoria Rennie EDITORIAL ADVISORY BOARD


Roger Bridge (Chair) BEng, ACSM, FIMMM Alastair Smith (BTS Chair) BSc CEng MICE John Corcoran (past BTS Chair) CEng MICE FICE Asil Zaidi (BTSYM) Msc, PMP, GMICE Divik Bandopadhyaya BEng (Hons) MSc GMICE Rosa Diez CEng, BSc (Hons), DIC, FGS, MIMMM Ken Kwok MSc, BSc, MHKIE, MIMMM Dr Donald Lamont MBE, PhD, CEng, FICE Darren Page BSc, MSc, CEng, CGeol, MIMMM, FGS David Terry BEng, CEng, FIMMM, FICE Ivor Thomas BEng, LLB, CEng, FICE


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Patrick Reynolds Editor


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Tunnels & Tunnelling International ISSN 1369-3999 (USPS 7330) is published monthly by Business Trade Media International.


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We like to hear from readers about the magazine or issues facing the profession. You can email us at: editor@tunnelsandtunnelling.com


September 2026 | 3


Tunnels & Tunnelling International, World Container Inc, 150-15, 183rd Street, Jamaica, NY 11413, USA. Air Business Ltd is acting as our mailing agent.


Tunnels & Tunnelling International and its Editorial Advisory Board accept no responsibility for the accuracy of statements, portrayal of best practice, or opinion given within the Magazine that is not the expressly designated opinion of the Magazine or its Editorial Advisory Board.


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