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SDC 2019
22 October, 2019
Toronto is hosting the 4th International Conference on Shaft Design and Construction this November. It is the first time the event is held in America

TAC Directors’ Reports / Quebec and Maritimes
22 October, 2019
Every autumn the TAC directors report on projects and activities in their regions.

International relations
21 October, 2019
On behalf of TAC, Andre Rancourt travelled to China to attend a workshop hosted by the China Railway Society.

In demand in Montreal
21 October, 2019
A local building boom has affected the supply of shotcrete to contractors across the tunnelling and wider construction industry. Liam Ireland, technical sales engineer, King Packaged Materials Company, reports

Experience what’s out there
21 October, 2019
A tunnel is roughly defined, when a definition can be narrowed down at all. A drive time radio host sharing the traffic report will refer to a surface-level enclosed road as a tunnel, or a pedestrian walkway in a culvert, or even an eight lane overpass. When I started working with Tunnels & Tunnelling the general guidelines for covering a project were, at least a kilometer long, and at least eight feet in diameter. The specific numbers aren’t as important, though, as what they signify—the need to excavate without disrupting the surface.

Vestfold upgrade work commences
17 October, 2019
Norway – Some 14km of new double-track railway is being constructed in eastern Norway for the upgrade of the Vestfold Line. The project calls for the construction of three single-bore tunnels, each with a cross-section of 123m3.

Hatta pumped storage project contract awarded
16 October, 2019
UAE – A Strabag-led consortium will design, build and commission the Hatta pumped storage project (PSP) in Dubai. Strabag, along with partners Andritz of Austria and Ozkar Insaat of Turkey will build the EUR 340M scheme for the Dubai Electricity and Water Authority.

Lane secures Seattle ship canal contract
15 October, 2019
Washington – Lane, part of the Salini Impregilo Group, announced October 9 it has won a USD 255M contract to build a water storage tunnel to help reduce polluted overflows into the Lake Washington Ship Canal in Washington.

Stakeholders reject working conditions as cause of Bond Street deaths
10 October, 2019
Great Britain – Two workers on Crossrail’s Bond Street project passed away in their sleep in the same week. Various media have reported that working conditions relating to air quality or stress were to blame, but this has been rejected by stakeholders. Reports of further investigation, or further details of the illness were not forthcoming from the contractor or client.

The Victorian Tunnelling Training Centre is under construction
10 October, 2019
Australia - The construction of the Victorian Tunnelling Training Centre (VTC) is set to start in Melbourne. The VTC will be located at Holmesglen Institute’s Drummond Street campus in Chadstone and will take the first students during Semester 1 over the next year.

Metro Vancouver committee recommends tunnel for Massey crossing
07 October, 2019
British Columbia – A committee of Metro Vancouver mayors made its recommendation on October 2 for an eight-lane, immersed tube tunnel for the Massey tunnel replacement. Two lanes would be reserved for transit.

Queen of Denmark opens the Cityringen metro line
03 October, 2019
Denmark - The 15.5km-long Copenhagen City Circle Line (M3) was inaugurated at the end of September.

Incimmet completes tough ventilation shaft
01 October, 2019
Colombia – Peruvian mining contractor Incimmet has excavated a 30m-deep, 4.1m-diameter ventilation shaft for the Buriticá mine development project. Ground conditions at the Buriticá complex largely consist of andesite-porphyry, diorites and monzodiorites with intrusive hydrothermal gaps within the volcanic and sedimentary sequences.

Humber estuary tunnel breaks through
01 October, 2019
Great Britain – The Humber tunnel has broken through. The drive was completed by a joint venture of Skanska, Porr and A. Hak is utilising a VMT-guided, 4.4m-diameter Herrenknecht machine.

Modular data centres displayed underground
01 October, 2019
Switzerland – A prototype modular data centre was presented at the Hagerbach Test Gallery in September 2019. The project was led by Swiss Center of Applied Underground Technologies (SCAUT) and aims to use underground space server storage.

Liebherr heavyweights work in tandem on TBM lift
01 October, 2019
Germany – Two Liebherr crawler cranes, an LR 11350 and an LR 11000, worked in tandem to load a TBM onto a barge at the Rhine port of Kehl in Baden-Württemberg, Germany.

Varberg Tunnel contract awarded
01 October, 2019
Sweden – Implenia has been awarded the design and construct contract for the twin-track rail link between Varberg and Hamra. The project notably includes tunnelled work between the city of Varberg.

Navigating live tunnel connections
30 September, 2019
Connecting the Des Plaines Tunnel System to the McCook Reservoir is one of the latest – and more challenging – components of TARP. Report by Cary Hirner and Faruk Oksuz of Black & Veatch, and Carmen Scalise of the Metropolitan Water Reclamation District of Greater Chicago

Properties of Fibres
30 September, 2019
Benoit De Rivaz, a fibre expert working with Bekaert Maccaferri, a supplier of steel and polymer fibre discusses the various material characteristics of steel and polymer fibres, with special regards to long-term performance

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