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Tunneling News

Debohra completes both tunnel tubes beneath Vienna highlighting low-disruption urban tunnelling

Tunnel boring has been completed on both tracks of Vienna’s U2 metro extension, marking a major milestone for one of the city’s most important public transport projects. The works form part of the wid...

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India’s largest rail TBM begins tunnelling beneath Mumbai

India’s Mumbai-Ahmedabad high-speed rail project has reached a major underground construction milestone, with the country’s largest rail tunnel boring machine beginning excavation from the Vikhroli sh...

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Fatal landslide exposes construction-stage risks around tunnel portals

A fatal landslide at the under-construction Anakkampoyil-Kalladi-Meppadi road tunnel project in Kerala has renewed concern over construction-stage slope stability in the Western Ghats. The landslide o...

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Scripting in RS3: Your Tunnel Liner Results, On Demand

What if checking every section along your tunnel took less time than making a coffee? Tunnel lining design is not painful during the analysis stage – the work gets bogged down afterward. Once RS3 has...

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Polcevera ventilation tunnel completed for Italy’s Terzo Valico project

Excavation has been completed on the 2 km Polcevera ventilation tunnel, a key underground element of Italy’s Terzo Valico dei Giovi and Genoa Junction railway project. The tunnel forms part of a wider...

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India first underwater road and rail tunnel under Brahmaputra

India has approved the construction of its first underwater road-cum-rail tunnel beneath the Brahmaputra River in Assam, marking a major step for transport connectivity in the north-east of the countr...

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Major wastewater tunnel procurement begins in southern Sweden

Swedish regional water utility VA SYD has launched the procurement process for the tunnel and shaft works forming part of the MAXIMA wastewater treatment system. The project will create a new undergro...

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Advanced mixshield TBM tackles chalk and flint beneath the Thames

Construction has begun on a major sub-river power tunnel beneath the River Thames as part of National Grid’s Great Grid Upgrade, with a Herrenknecht Mixshield tunnel boring machine now driving a 2.2 k...

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Tailrace tunnel breakthrough advances Australia’s largest renewable project

Australia’s Snowy 2.0 pumped storage hydropower project has reached a major construction milestone after tunnel boring machine Lady Eileen Hudson completed excavation of the 6 km tailrace tunnel and b...

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New sprayed concrete lining guide reshapes soft-ground tunnelling standards after decades of lessons

The publication of a new best-practice design guide for sprayed concrete linings (SCL) in soft ground marks an important technical development for underground construction, consolidating lessons from...

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