Features Archive

Archive of features from the global tunnels industry

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November 2022

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Hydro caverns offer vital experience for underground oil and gas storage
24 November 2022 Norway’s experience with extensive hydropower development and surge chamber cavern technology offered lessons for its underground oil and gas storage projects. This is an abridged report of the full paper by Prof. Bjørn Nilsen discussing the similarities and key lessons to share

Leadership vision for a path toward sustainability
24 November 2022 Shortly before his recent election as President of International Tunnelling and Underground Space Association (ITA-AITES), Prof Arnold Dix, a global expert in tunnel sector contractual arrangements, told T&T about his vision for how the international tunneling industry can accelerate its practical pursuit of sustainability – by being armed with new, tailored-made measurement tools and introducing a ‘non-dispute’ option in contract law

Tunneling under operating highways and railways: Part 1
24 November 2022 Keivan Rafie and Gary Kramer of Hatch present the first of their two-part look at lessons in planning and constructing tunnel crossings with shallow cover under live transport corridors

Clean hat trick
24 November 2022 Nicholson Construction has had three contracts for Project Clean Lake in Ohio, and each has posed its challenges. Keren Fallwell reports

October 2022

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Out and in at sea
31 October 2022 Major lifts for tunnel projects have taken place at sea recently for an outfall off Kuwait and at Hinkley Point C power station, in UK

BIM for bored tunnels
31 October 2022 ITA’s Working Group 22 has published a guide to talk about BIM and its use for bored tunnel projects

Hydro Caverns Offers Vital Experience for Underground Oil and Gas Storage
31 October 2022 Norway’s experience with extensive hydropower development and surge chamber cavern technology offered lessons for its underground oil and gas storage projects. This is an abridged report of the full paper by Prof. Bjørn Nilsen discussing the similarities and key lessons to share.

Spotlight on Austrian Alpine Tunnelling
31 October 2022 The 13th Austrian Tunnel Day and 71st Geomechanics Colloquium takes place in October in Salzburg.

A Look Beyond Only Physical: Virtual Master Rings
31 October 2022 Florian Werres of VMT describes a digital approach to achieving the assurance of segmental quality for bored tunnels without always physically erecting master rings.

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.

September 2022

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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.

Improving in-tunnel metro evacuation
26 September 2022 U-THREAT research by Germany and France is helping to improve safety in metro evacuation

Spotlight on Innotrans 2022
26 September 2022 Berlin is hosting InnoTrans 2022, which will feature many aspects of rail infrastructure including tunnels

Tunnelling under operating highways and railways: Part 1
26 September 2022 Keivan Rafie and Gary Kramer of Hatch present the first of their two-part look at lessons in planning and constructing tunnel crossings with shallow cover under live transport corridors

Multiple entries
26 September 2022 Extensive tunnelling on HS2 also features major shaft construction works at many locations

Ready for Rogfast
26 September 2022 Early excavation is underway for Norway’s world-beating Rogfast subsea road tunnel, which also calls for a large access tunnel and shaft construction from a midway island. Report by Patrick Reynolds

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

Spotlight: ITA guide on shafts
26 September 2022 ITA’s Working Group 23 produced a guide on definitions and classifications of terms in shaft design and construction

Upward climbs for TBMS
26 September 2022 Inclined shafts for hydropower tunnels are an interesting task for excavation by TBM, which have been successfully rising to varied challenges

Vision for a path ahead
09 September 2022 Prof Arnold Dix has just been elected as new ITA President. Shortly beforehand, in T&T’s preview of WTC 2022, he described his proposed plans to accelerate a practical mission on sustainability in tunnelling – to include moves on procurement, contract conditions and metrics.