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Underground Structures News

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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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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Scripting Comes to RS3: Automate, Customize, and Accelerate Your 3D Modelling

Why Scripting Matters Geotechnical projects are more complex. Models are larger, construction sequences have more stages, and parametric studies must be rerun. Manually building and post-processing mo...

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Deep beneath London: HS2 completes critical safety cross passages in Northolt tunnel

HS2 has reached a major underground construction milestone with the completion of all 34 cross passages linking the twin bores of the 8.4-mile Northolt Tunnel beneath west London. Running between West...

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Yangtze River high-speed rail tunnel completed after record underwater TBM drive

China has reached a major tunnelling milestone with the completion of the underwater section of the Chongming–Taicang Yangtze River tunnel, a key component of the Shanghai–Chongqing–Chengdu high-speed...

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Underground works begin on major Madrid Metro extension

Tunnelling works have commenced for the extension of Metro Line 11 in Madrid, marking a key milestone in the city’s underground infrastructure expansion, according to project announcements and indust...

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Stress Meets Structure: Modelling Spalling in Jointed Rock with RS2 and CVBM

Deep underground excavations operate within a narrow margin between equilibrium and failure. As confinement decreases at an excavation boundary, stresses redistribute and concentrate around the openi...

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Palace of Westminster restoration: £3bn initial phase to launch underground and enabling works

Parliament’s Restoration and Renewal (R&R) Client Board has published costed proposals for the long-delayed restoration of the Palace of Westminster, recommending a £3bn, seven-year first phase...

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Blasting completed on Stockholm Metro Service Tunnel linking Hagastaden and Arenastaden

Blasting works have been completed on a new service tunnel forming part of the Stockholm Metro Expansion programme, marking a key underground construction milestone beneath the Swedish capital. The f...

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Dubai Municipality invites bids for $8.2bn strategic sewerage tunnels project

Dubai Municipality has formally invited bids for the Phase II Links Package of the Dubai Strategic Sewerage Tunnels (DSST) project, advancing one of the emirate’s largest public private partnership...

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