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Ken Spiby awarded James Clark Medal
27 December, 2022
The British Tunnelling Society has chosen Ken Spiby as recipient of the James Clark Medal for his major contributions to the industry
ITA president to give keynote at BTS Conference
27 September, 2022
Newly-elected ITA president Arnold Dix will be a keynote speaker at the BTS Conference and Exhibition in London on October 11-12.
London power project completes first drive
24 June, 2022
National Grid’s London Power Tunnels (LPT) project completed the first of five drives this week.
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
Necessity fosters innovation
17 March, 2022
Whether for large- or small-diameter tunnels, utility investment calls for more underground methods, ushering in several innovative techniques in the process. Patrick Reynolds reports
Hochtief to build National Grid’s Snowdonia tunnel
08 February, 2022
Hochtief UK has been awarded a £207m (US$280m) power supply tunnel project by National Grid in Wales.
Tunnel works at flagship pumped hydro facility have a golden heritage
21 January, 2022
Tunnelling work has started in Far North Queensland, Australia on the Kidston Pumped Hydro Project which involves the world’s first conversion of a disused gold mine into a pumped-storage hydroelectric power facility.
Water mist systems and Road tunnel ventilation
12 August, 2021
Ingo Riess of Riess Ingenieur, Zurich, Switzerland, discusses the benefits and effects of water-mist systems on tunnel fires in road tunnels
25 March, 2021
Utility grid projects bring a variety of tunnelling challenges. Report by Patrick Reynolds
Pushing for victory
29 January, 2021
A National Grid project to push a 5km pipeline under an estuary of global importance to wildlife has resulted in the world’s longest pipeline river crossing in a tunnel, safeguarding the UK’s gas supply for a century and earning a place in Guinness World Records. Julian Champkin reports
UK breaks record for longest hydraulically-inserted pipeline
19 November, 2020
UK energy company National Grid has completed what has been hailed as the world’s longest hydraulically-inserted pipeline, now officially recognised by Guinness World Records.
Banging the drum
10 June, 2020
Kate Cooksey has just assumed the chair of the British Tunnelling Society, as only the first female ever to do so. Here she talks to George Demetri about her career and aspirations for the BTS
National Grid submits Snowdonia tunnel proposal
08 April, 2020
Great Britain – National Grid has proposed to move 3.5km of overhead power lines underground. If approved, a 4.4m-diameter, 3km-long tunnel will be dug in the area of the Dwyryd Estuary in Snowdonia, allowing for the removal of 10 pylons and significantly improving the aesthetic of the landscape.
National Grid awards LPT2 tunnels contract
19 December, 2019
Great Britain – National Grid has signed a GBP 400M contract with Hochtief-Murphy JV to deliver the tunnels and shafts for the London Power Tunnels (LPT2) project. The overall scheme will cost GBP 1bn (USD 1.3bn) and take six years to complete. This is the second phase of the LPT project.
14 November, 2019
Frank Grundholm, vice president for global HVACR sales at ABB Motion, explains how variable frequency drives (VFDs) are used together with electric motors for the effective control of rail and road tunnel ventilation fans
Tunnelling costs and production rates benchmarked
30 September, 2019
Bill Grose of Bill Grose Consulting and Aleister Hellier of the Infrastructure Projects Authority at Her Majesty’s Treasury in the UK present this paper on efforts to benchmark UK tunnelling costs and production rates in 2018
Hinkley Point C reaches another key milestone
25 September, 2019
Great Britain – Tunnelling works have started at the Hinkley Point C project, UK’s first new nuclear power station in a generation. Almost 38,000 concrete segments are being installed to support the three underground marine tunnels at up to 33m below the seabed of the Bristol Channel.
The big conversion
12 April, 2019
Paola De Pascali spoke with Florent Detraux, tunnel construction manager at Vinci Construction Grand Projets, about the conversion of an NFM TBM to use Herrenknecht Variable Density technology on the third metro line Phase 4A in Cairo
24 January, 2018
T&T’s guide to UCT and a round up of product and business news from this year’s exhibitors
Tunnelling in the jungle
22 January, 2018
Snakes and hard sandstone were among the challenges facing Seli Overseas on a new 11.5km low pressure headrace tunnel for a hydroelectric project in Laos