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NGS 2022 abstract deadline extended…but time running out
13 January, 2022
Abstracts for the Nordic Grouting Symposium (NGS 2022) can now be submitted up to 21 January 2022, following a deadline extension by the organiser.

Herrenknecht wins twin TBM order for Sydney Metro West tunnels
13 January, 2022
Following a global tender process, the Acciona Ferrovial Joint Venture has contracted Herrenknecht to design, build and deliver two tunnel boring machines to excavate rail tunnels on the Sydney Metro West project, Australia.

Breakthrough marks completion of Singapore Circle Line 6 tunnelling
12 January, 2022
Tunnelling works on Singapore’s Circle Line 6 have been completed following the breakthrough of a TBM at Cantonment station on 12 January, announced the country’s Land Transport Authority (LTA).

TBM makes first breakthrough on Mumbai Coastal Road project
11 January, 2022
India’s largest-diameter TBM has holed through on the first of two tunnels which will form part of the US$1.6bn Coastal Road Project – a roughly 29km freeway running alongside Mumbai’s western seafront.

Uncontrolled groundwater inflows the subject of BGA webinar
11 January, 2022
‘Thinking conceptually about groundwater problems’ is the British Geotechnical Association’s (BGA) next annual John Mitchell Lecture to be presented online on 18 January by T&T contributing author Dr Martin Preene.

TGV-style off-site techniques inspire HS2 tunnel designs
07 January, 2022
HS2 will use lessons learnt from the construction of French high-speed lines (‘TGV’) to build around 7km of tunnels using an off-site modular approach.

Axel Nitschke passes away, aged 54
07 January, 2022
Tunnelling professionals globally are mourning the premature passing of US-based Dr Axel Nitschke, who died on December 26 and who was a much-valued contributor to Tunnels and Tunnelling International (T&T).

Smallest CREG slurry TBM breaks through in China
06 January, 2022
November saw the breakthrough of a 2.845m-Ø CREG slurry TBM in Xuzhou, Jiangsu Province, China.

China opens its longest underwater road tunnel
06 January, 2022
China has opened its longest underwater highway tunnel after only four years of construction below one of the country’s largest freshwater lakes – Lake Taihu in the Yangtze Delta.

Robbins XRE TBM breaks through in the Andes
06 January, 2022
Having bored through challenging variable ground with rock strengths of up to 60MPa UCS, a Robbins Crossover XRE TBM has broken through in the mountainous southern Maule region of Chile.

BTSYM invites presentations for March conference
05 January, 2022
BTSYM – the group for the British Tunnelling Society’s Young Members – has announced a call for presentations for its 2022 conference that is scheduled to take place on 18 March at the Institution of Civil Engineers in London, UK.

Work ramping up on India’s first regional rapid transit project
04 January, 2022
Following the delivery of three Terratec EPB tunnel boring machines, tunnelling works are gearing up for India’s first regional rapid transit project which will connect Delhi and Meerut, via Ghaziabad.

In search of sustainable fire safety
30 December, 2021
Alden Spencer, Global Product Manager for ANSUL Vehicle Systems at Johnson Controls, explores the fire risks inherent in tunnel construction, the changing regulatory landscape surrounding the use of PFAS suppression agents, and how innovative, non-fluorinated solutions can help companies keep their operations safe, sustainable and profitable

Divik Bandopadhyaya Interview
30 December, 2021
Aged 27, Divik Bandopadhyaya has just completed a one-year stint as chair of BTSYM. He discusses his education, interests and career to date, offering along the way some advice to newly-qualified tunnel engineers. George Demetri reports

Squaring the circle
29 December, 2021
Lok Home, owner of Robbins, once sold his company to the Chinese then bought it back because he disliked what they were doing to it. He makes TBMs that cut the hardest of hard rock. Now he has made a TBM that breaks all the rules. Report by Julian Champkin

Closed form elastic and plastic analysis methods Part 1
29 December, 2021
In the first of two articles, Stephen Doran sets out the historical development of some common closed-form analytical methods and discusses the limitations of their use

No blanket solution
29 December, 2021
Variations in tunnels and inflows need different waterproofing solutions. Report by Patrick Reynolds

Under pressure
29 December, 2021
Dr Donald Lamont and Roy Slocombe gave the British Tunnelling Society lecture in October on low, intermediate and high-pressure compressed air work, highlighting the launch of revised BTS CAWG guidance. Report by Dr Donald Lamont and Roy Slocombe

Bla Bla... And a brighter future
29 December, 2021
So, here we are at the end of another year. I guess I could drone on, Greta Thunberg style, about how difficult these 12 months have been for us all bla bla bla; the pandemic bla bla bla; the amazing T&T redesign bla bla bla. But I won’t.

Mitigating a water bearing fissure
29 December, 2021
Emily Riley won the British Geotechnical Association’s (BGA) annual Cooling Prize competition for young professionals with her paper ‘The engineering mitigation of a water bearing fissure in the Chalk at the Tideway Deptford Church Street shaft’. It is reproduced here by kind permission of the BGA