Our editorial board comprises a specialist group of leading industry figures who, in conjunction with the TUNNELS editorial team, identify the main drivers of the industry helping to produce regular, thought provoking opinion pieces on the latest issues, challenges and developments.

Latest Tunnels Feature

Fibres of steel
24 November, 2020
Choosing the right steel fibre for FRC precast tunnel segments can have a significant impact on performance, productivity and cost, explains Benoit de Rivaz, Global Technical Manager BP...
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Melbourne’s big dig 24 November, 2020 Four TBMs are at work on the Melbourne Metro – a new line comprising two 9km-long tunnels that will run beneath the central business district and where monitoring for ground movement was critical. Julian Champkin reports on the progress
Canadian distance record 20 November, 2020 Microtunnelling can save costs, surface disruption and inconvenience to the public, while the distances that can be covered are increasing. Julian Champkin looks at a 5km project in Canada and asks whether the technique can stretch even further
Rock Mass Classification Systems 20 November, 2020 Rock mass’ refers to an accumulation of rock material separated by rock discontinuities, mostly by joints, bedding planes, dyke intrusions and faults. When a rock mass is intersected by a sufficiently large number of weak planes such that rock-mass behaviour is not controlled by failure on individual planes, the mass’s behaviour will tend towards the continuum type of behaviour again. However, the numerous planes in the mass (usually weaker than the rock material), will significantly influence rock behaviour. In such cases, rock mass classification is commonly used to evaluate the rock mass behaviour.
Structural design and classification of FRC for tunnel linings 20 November, 2020 Axel G Nitschke, Tunnel Practice Leader at WSP USA, looks at the use of fibre-reinforced concrete and suggests a labelling and classification system designed to provide an effective and easy way to specify FRC for tunnel linings
BTS celebrates 50 years 19 November, 2020 In February 2021, the British Tunnelling Society will be 50. To celebrate, it is compiling a major retrospective to chart half a century of momentous advances in tunnelling, recording the changes through the eyes of tunnellers. George Demetri takes a look
Not going viral 23 October, 2020 Many feared the outbreak of Covid-19 would wreak havoc on the tunnelling sector so how has it fared during the coronavirus pandemic? Perhaps not as disastrously as feared. Julian Champkin investigates
Two-Way Tunnelling in Seoul 23 October, 2020 Great Train Express (GTX) is a proposed high-speed commuter line with shared infrastructure that will connect new towns around the greater Seoul Metropolitan Area with the capital. It is the first project in Korea to use a large-bore TBM. Dr Warren Wangryul Jee, chairman and tunnel project manager of GTS-Korea, 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
Extending the Tamoios highway 23 October, 2020 Located mostly in Brazilian rainforest, the Tamoios highway and tunnel project is of critical importance to the Brazilian economy. It was the subject of the BTSYM talk in September given by project director Pedro Soares dos Anjos. Report by Divik Bandopadhyaya of London Bridge Associates
Automation, AI and the future of tunneling 23 October, 2020 Modern, mechanised tunnelling methods have had an enormous economic, environmental and cultural impact globally. To sustain long-term growth in tunnelling operations, industry and academia are researching new technologies to better handle challenging conditions. Among these, automation and artificial intelligence have an essential and promising role in the future of underground construction.
Groundwater control for tunnel cross passages 23 October, 2020 Dr Martin Preene of Preene Groundwater Consulting looks at the construction of cross passages and the various techniques for groundwater control and ground treatment
Silent Sentinels on watch in The Hague 22 September, 2020 Challenging municipal requirements were met using advanced instrumentation to provide accurate geomonitoring of road tunnels in the Netherlands