Features Archive

Combining Two Soft Ground TBM Technologies
27 March 2018 The development of Herrenknecht’s Variable Density TBM is detailed by Karin Bäppler, head of geotechnics and consulting for traffic tunnelling; Frédéric Battistoni, division manager for traffic tunnelling and Werner Burger, manager of the design division - traffic tunneling

Springs Tunnel Refurbishment
27 March 2018 Alun Thomas from supplier Minova and Dave Thomas from main contractor AMCO look at some of the products and systems used for the Springs Tunnel refurbishment project

Crossrail SCL Design
26 March 2018 Mott MacDonald project director Rosa Diez looks at the work required for Crossrail’s contract C121 – sprayed concrete lining design

No dig
26 March 2018 The NASTT holds its annual show in March

Continuing education
26 March 2018 For those seeking CEUs or to learn something new short course programs are on offer

Drive time
26 March 2018 The TBM mining twin tunnels for the Regional Connector project in Los Angeles makes its final breakthrough, Nicole Robinson reports

Teach a lesson
07 February 2018 A free resource to promote and educate tunnelling engineers of the future. Paola De Pascali speaks with Gerard Quigg, past chair of the BTSYM’s Schools and Universities committee to understand how the Teaching Pack works.

Alternative fuel risks
06 February 2018 Traditional vehicle fuels such as petrol and diesel are being exchanged at an ever accelerating pace by alternative energy carriers. From a risk perspective, batteries and gaseous fuels introduce new risks. Road tunnels and underground garages were identified as potential high-risk zones. A research project at RISE, Research Institutes of Sweden (formerly SP), was recently carried out to review current knowledge and Swedish stakeholders’ views of the issue

French Revolution
06 February 2018 Automation of the steering and piloting for TBMs using a system developed by Vinci Construction engineers in the 1980s is continuing to deliver benefits. Bernadette Ballantyne reports

Risk management in major projects
06 February 2018 On the 19th of October, four speakers from across the tunnelling industry gave their perspective on the management of risk in tunnelling and major infrastructure projects.

Smart Ground Support
31 January 2018 Nicholas Vlachopoulos, professor with the Royal Military College of Canada, and Bradley Forbes, PhD candidate at Queens University, share their research into continuous strain monitoring using fiber optics

Advantages reinforced
24 January 2018 Behzad Khorshidi of McNally Construction discusses recent research on hybrid tunnelling by post-tensioning helical segmental lining

UCT 2018
24 January 2018 T&T’s guide to UCT and a round up of product and business news from this year’s exhibitors

Concrete Connections
24 January 2018 Greg Austin, marketing director with GCP Applied Technologies, reports on waterproofing work for an expansion at McCarran Airport to add a pedestrian tunnel.

Preserving health
22 January 2018 Australia-based Kate Cole was awarded a Churchill Fellowship in 2016 with the goal of investigating best practice in health internationally, through travelling to tunnels in Norway, Switzerland, the UK and the USA. She is now back home and working to share the findings of her fellowship to improve conditions for Australian tunnellers

School’s in
22 January 2018 Paola De Pascali looks at an array of the education and training programmes for underground construction that are on offer around the world

Ground control
22 January 2018 Joseph Sopko, director of ground freezing for Moretrench, discusses the design of frozen Earth structure for cross passage excavation

Working remotely
22 January 2018 Nichole Boultbee, engineering geologist with Golder Associates Ltd. and Oliver Robson, project manager with Innergex Renewable Energy Inc., report on the challenges of working in a remote and sensitive environment for the now operational Upper Lillooet River hydro facility

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

Nigerian tunnelling
22 January 2018 As Nigeria makes infrastructure investment a key political priority, Tunnelling Association Nigeria is pushing to raise the awareness of the potential for underground construction

In the nick of time
22 January 2018 To secure the potable water supply for Montreal, a new intake tunnel is being built with a fast-track design and construction schedule. Jean Habimana, regional tunnel practice lead - east region for Hatch, discusses the Atwater Conveyance Tunnel’s project delivery