Today on Tunnels & Tunnelling International
Gdansk Double
Recent slurry TBM bores in Gdansk were the key challenge to build a new road link. Report by Patrick Reynolds.
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Warsaw metro’s improvements
Poland’s capital Warsaw has two million inhabitants, but only one underground metro line. A second line, with 28 stations over 30km, is under construction. The central section of this line is being...
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To the extreme
Requiring six TBMs to tunnel more than 60km through difficult ground conditions, technical writer Desiree Willis of The Robbins Company explains the various challenges and triumphs at Mexico City’s...
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Eglinton-Crosstown tunnel is half mined
TORONTO – Two TBMs mining the western segment of the Eglinton-Crosstown’s 10km tunnel, officially reached the half-way point of their journey on January 21 as they broke through the headwall at Allen Road.
TORONTO – Two TBMs mining the western segment of the Eglinton-Crosstown’s 10km tunnel, officially reached the half-way point of their journey on January 21 as they broke through the headwall at Allen Road.
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New Lake Mead contracts to be awarded in 2015
USA—The Southern Nevada Water Authority (SNWA) board of directors adopted in December a recommendation to design and construct a new Low Lake Level Water Pumping Station (L3PS) at Lake Mead, “within the swiftest feasible timeframe.”
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Mesaimeer tunnel approaches halfway point
QATAR - Almost 50 per cent of works on the first phase of the Mesaimeer tunnel project in Doha have been completed, according to local media. The project will discharge surface and groundwater into the sea once it has been completed.
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Rotten ceiling beams culprit in hydropower collapse
VIETNAM - Rotten ceiling beams caused the Da Dang-Da Chomo hydropower tunnel collapse according to a project investor. The chairman of the plant’s board of investors apologised to Lam Dong Province authorities for the collapse last month.
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Investment deals signed between Russia and India
RUSSIA/INDIA – The Russian Direct Investment Fund (RDIF) and Indian financial services company IDFC will each invest USD 500M in infrastructure projects in the two countries. The agreement was signed during a state visit by Russian president Vladimir Putin last month.
LATEST FEATURES
THE MAYO B project (Figure 1) arose from the need of the Yukon Energy Corporation (YEC) to increase renewable power sources and meet system-wide load demands, while ensuring that diesel consumed to generate electricity was reduced.
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Alice in Auckland
Rhian Owen reports on the Waterview Connection project in Auckland, New Zealand
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Romaine Diversion
To build a dam for the La Romaine project in Quebec, a joint venture of EBC-Neilson needed to build a river. Donald Proulx, vice president of heavy civil works and mines, business development proposals, for EBC Inc, based in Quebec reports
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Tied together
Tie-in works of a tunnel twinning project in northern British Columbia required drill and blast excavation of access tunnels leading to interconnection tie-in chambers that were excavated in hard rock to within 3m of the existing pressurised steel lined penstock. Mark Kellaway and Dave Young of Hatch and Hatch Mott Macdonald and Gordon Revey of Revey Associates, Inc., explains the geometrically complex excavation undertaken during a limited shutdown period when the penstocks were depressurized.
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Hartbeat
Updating the John Hart Generating Station requires a new underground powerhouse. Jesse Schneider of Frontier-Kemper Constructors, ULC, and Tony Dell of SNC Lavalin Power, discuss the proposed design and construction approach for the project.
BLOGS
Old dogs teach new tricks
BY NOW it's an autumn tradition in the UK. The leaves are turning, the daily commute has the added pleasure of the _ u virus, and a study has warned that we face a critical shortage of engineers.
BY NOW it's an autumn tradition in the UK. The leaves are turning, the daily commute has the added pleasure of the _ u virus, and a study has warned that we face a critical shortage of engineers.
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Old wine for New wine
POPE FRANCIS delivered a pep talk to the European Parliament last month. In it, he gently styled the continent as feeling haggard and elderly. No longer able to meet its challenges with vigour or vitality.
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Remember the fifth of November
In a couple of months it will be the 410th anniversary of the first attempt at the Gunpowder Treason in the UK. By the time this issue reaches you, Guy Fawkes Night (‘Bonfire Night’ in the UK) itself will have passed. But less well known is an attempt, 11 months earlier, to blow up the British Parliament with a tunnelled cache of explosives, rather than the less exciting option of a cellar rented beneath the seat of government itself.
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Young members matter
In the last 15 months there has been a flourish of countries establishing Young Member Groups in tunnelling organisations, and that includes both Canada and the US. In May the ITA General Assembly in Brazil approved the creation of an ITA Young Members Group. Its mission is to “bridge the generation gap and provide a technical network platform for young professionals in the tunnelling and underground space industry."
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Oh Canada
With the autumn conference season upon us the tunnelling community is next month heading to Vancouver to take part in the Tunnelling Association of Canada’s biennial conference.
LATEST EVENTS
9th China Tunnel & Bridge Summit
Shenzen
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NASTT’s 2015 No-Dig Show
NASTT’s No-Dig Show is the largest trenchless technology conference in North America, where professionals attend to learn new techniques that will save money and improve infrastructure. The overall No-Dig program is focused on one objective: helping you maximize your investment in trenchless technologies, services and applications.
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