Latest from Tunnels and Tunnelling
Finally back on track
HS2 has at last been given the green light, following the notice to proceed which is enabling four joint ventures to finalise their designs. Julian Champkin reports
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Tunnelling North
Nordøyvegen is a spectacular engineering project which will connect five Norwegian islands to the mainland with tunnels and bridges. Julian Champkin spoke with Lars Erik Skjolden, the project’s chief engineer
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Banging the drum
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
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TBM holes through on Koralm KAT 3 contract
KORA, a 9.87m-diameter multi-mode Herrenknecht TBM, has achieved final breakthrough on the 10km north bore of Austria’s 32.9km-long (20.5 miles) Koralm Tunnel which, when completed, will be one of the world’s longest transport tunnels.
KORA, a 9.87m-diameter multi-mode Herrenknecht TBM, has achieved final breakthrough on the 10km north bore of Austria’s 32.9km-long (20.5 miles) Koralm Tunnel which, when completed, will be one of the world’s longest transport tunnels.
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Still time to enter the ITA Awards
Time is quickly running out to enter the ITA Tunnelling and Underground Space Awards which close on June 30. Due to the ongoing coronavirus pandemic, the event will be staged as a virtual one at the end of the year, although the exact date has yet to be confirmed.
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Finland-Estonia tunnel faces years of delay
Following an unexpected decision by Finnish policy makers, the undersea tunnel proposed to link Finland with Estonia could face a delay of up to seven years. This follows a vote by Helsinki-Uusimaa Regional Council in favour of an alternative alignment to that proposed by the developer.
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Bids invited for Kashmir road tunnels
India’s government announced on June 10 that it is accepting fresh bids for the construction of the Zojila Tunnel in Jammu and Kashmir in the north of the country. Located on the Sonamarg-Kargil section of National Highway-01 from Srinagar to Leh, construction of the tunnel will allow all-year travel across the Ladakh region.
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Design teams prepare for possible tunnel to replace Seattle bridge
Seattle Department of Transportation (SDOT) is finally including the possibility of a tunnel to replace the rapidly deteriorating West Seattle High-Rise Bridge which is showing exponential cracking growth. Earlier this month, SDOT made an addendum to its original Request for Qualifications (RFQ) for the bridge’s replacement that allowed for ‘other replacement alternatives’.
LATEST FEATURES
A good dose of fibre
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
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
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Impacts of extreme weather on tunneling
One of the most noticeable results of global warming is an increase in the strength and occurrence of extreme weather events around the world. Many studies now show that more frequent heatwaves, heavy rain, snowfalls, and hurricanes are expected over the next few decades. This new reality requires more careful site and logistical planning for heavy civil projects – especially tunnelling sites – where extreme weather can have a significant impact in many different ways.
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Crossover TBMS Tackle Mumbai Challenges
JP Bayart, Jim Clark and John McNally of The Robbins Company report on the progress of two TBMs boring through challenging mixed ground conditions on Mumbai’s metro
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A new type of Indian Jumbo
An advanced automated tunnelling jumbo is excavating a 15.1km tunnel on a flagship railway project in northern India. Beatrice Rispal of Sandvik reports
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Finally back on track
HS2 has at last been given the green light, following the notice to proceed which is enabling four joint ventures to finalise their designs. Julian Champkin reports
