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Tunnelling the Thames
29 October, 2021
Sagar Sheth, Principal Tunnelling Engineer, and Richard Miller, Head of Tunnelling, both of Ramboll UK, describe the design checks and assurance services, risk and stakeholder management they provided during the construction of Tideway
Closed form tunnel analysis methods
07 September, 2021
In the first of a series of articles, Stephen Doran looks at closed-form tunnel analysis methods, their background and how they can provide an insight into the underlying assumptions used in software
Buried Tideway TBM allows milestone breakthrough
29 July, 2021
Tideway has announced that TBM Millicent, which had been due to complete her drive toward the shaft at Carnwath Road Riverside Site in Fulham, London, has instead been turned and buried to allow the construction of a short connection tunnel.
Defying the quakes
17 June, 2021
Reconstructing an existing dam and building new intakes, outtakes and spillway form part of an ambitious 10-year programme in the drought-hit and earthquake-prone Santa Clara Valley, California. George Demetri reports
Lord of the rings
25 February, 2021
A new ring-build system is said to offer health and safety gains, but also cuts ring completion times by around a third - bringing significant cost savings. George Demetri reports
Up the junction, round the bend
23 October, 2020
While pushing a preformed portal box through an excavation has been done before, a Network Rail project demands that it be done on a curve – and that hugely increases the complexity. Julian Champkin reports
Barhale tunnel shield overcomes pipe-jack issues
20 October, 2020
UK-based infrastructure specialist Barhale designed an innovative tunnel shield for a 215m pipe jack which has connected to the main Tideway Tunnel beneath London’s River Thames.
Balfour Beatty completes Hinkley cooling-water tunnels
06 October, 2020
Balfour Beatty has achieved a breakthrough on the longest and last of five onshore cooling-water tunnels at the Hinkley Point C project at Bridgwater in Somerset, England.
Muck disposal on a grand scale
25 August, 2020
Tideway (the so-called ‘super sewer’) is the biggest water infrastructure project in Europe and aims to rid the River Thames of millions of tonnes of raw sewage inflows every year. Julian Champkin reports on the progress so far
Tunnels facilitate first UK curved jacked-box structure
05 August, 2020
On 1 August 2020, UK-based Morgan Sindall broke through on the second of two tunnels on Network Rail's Werrington Grade Separation project. Advancing around 7m/day, a Lovat RM132 3.5m-diameter EPB machine has excavated two guide tunnels that form part of an ambitious civil engineering project that will see installation of the UK’s first-ever curved jacked-box structure.
Veteran TBM holes through on Tideway connection tunnel
03 July, 2020
TBM Charlotte has completed her drive on an important connection tunnel that forms part of Thames Tideway, London’s 25km-long ‘super sewer’. Holing through on 2 July 2020 at Carnwarth Road, Fulham, southeast London, the 3m-diameter machine has been mining at average depths of around 30m on the Frogmore Connection Tunnel which has been excavated in two parts.
A good dose of fibre
11 June, 2020
Steel fibre-reinforced concrete and its historic use in metro tunnels was the subject of discussion at a seminar hosted by steel-fibre maker Bekaert. Paola De Pascali reports
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
Hand arm vibration
27 April, 2020
Construction puts wellness and the protection of the workforce right at the top of the agenda. Why is no progress being made on the UK’s highest reported workplace disease: hand arm vibration syndrome? This report was prepared by Reactec, which develops systems to measure the problem.
Lifting from below
27 April, 2020
While the use of cranes underground may be limited, when they are used, specific adaptations are often required. Ian Vallely spoke to tunnelling experts about their requirements, and crane companies who’ve met these demands
Hammersmith connection Tunnel
27 March, 2020
The September BTS meeting saw a presentation on the Thames Tideway project’s Hammersmith Connection Tunnel. The talk was presented by Peter Coppenhall of Morgan Sindall, working as the designer’s representative in Thames Tideway West, and Ed Batty of BAM Nuttall, currently working as a Tunnel Manager in the Frogmore Connection Tunnel. This report was prepared for Tunnels and Tunnelling by Rosa Diez, project director for Mott MacDonald
Thames Tideway excavation halfway complete
21 February, 2020
Great Britain – London’s new ‘super sewer’ half excavated. The TBMs boring the Thames Tideway project are 12.5km through the 25km-long, 7m-diameter project. As well as the main tunnel, a 1km-long, 3m-diameter connection tunnel is also currently under construction in Wandsworth at the western end of the project.
23 December, 2019
Phil Evans, a section planner, Jose Goncalves, a tunnel sub-agent and Sean Melody, works superintendent explains how digital transformation can reshape tunnelling, showing the latest digital technologies being used by the Morgan Sindall, BAM Nuttall, Balfour Beatty joint venture delivering the west section of the Thames Tideway Tunnel
Breakthrough on Thames Tideway West
31 October, 2019
Great Britain – The first breakthrough on the Thames Tideway project took place last week at King George’s Park in Wandsworth. A 3m diameter Lovat EPBM, Charlotte, is digging the 1.1km Frogmore Connection Tunnel from Wandsworth to Fulham. The breakthrough marked completion of the 500m southern section of the tunnel and the TBM will now be lifted from the shaft, taken back to Dormay Street and placed back into the ground to tunnel 600m north to Fulham.
Morgan Sindall posts record results
04 March, 2019
Great Britain – Morgan Sindall delivered record profits in 2018. The British construction and infrastructure business saw its profitability leap by 23% from GBP 66M (USD 87M) to GBP 81.6M (USD 108M). Revenue was GBP 2.97bn (USD 3.93bn) and the order book stood at GBP 3.6bn (USD 4.76bn).