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Tunneling in Rock News

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Three-Dimensional Numerical Analysis of a Large-Diameter Surge Shaft Using RS3

Introduction Large underground excavations rarely behave as isolated, uniform openings. As excavation progresses, the surrounding rock mass redistributes stress, support is activated, and adjacent ope...

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1,600-ton TBM begins 4.4 km Melito Tunnel beneath the Southern Apennines

Excavation has started on the 4.4 km Melito Tunnel, the final tunnel to be driven on the Apice-Hirpinia section of Italy's Naples-Bari high-speed and high-capacity railway.The drive is being carried o...

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Call for Papers for Special Issue on “Tunneling Risk Assessment”

TC 304 on Engineering Practice of Risk Assessment and Management is pleased to announce a Call for Papers for Case Histories in Tunneling Risk Assessment that will be published in ISSMGE’s Internation...

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Year in Infrastructure 2026: acknowledging subsurface innovation and excellence

Bentley Systems has announced the finalists for the 2026 Year in Infrastructure Awards, highlighting infrastructure projects that are advancing digital engineering and helping solve some of the world’...

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Sweden expands underground rock caverns for radioactive waste storage

Sweden is moving ahead with a major underground expansion of the SFR final repository for short lived radioactive waste in Forsmark. The new contract covers the construction of six additional rock cav...

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Why geotechnical investigations define the success of pipejacking TBM projects

The expansion of renewable energy systems and the need to modernise urban infrastructure are driving a rapid increase in small-diameter tunnelling projects worldwide. These tunnels are widely used fo...

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Final breakthrough marks major milestone for Sydney Metro West tunnelling

The Sydney Metro West project has achieved a significant milestone with the completion of tunnelling on its western end. The second tunnel boring machine, known as TBM Dorothy, has broken through at...

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Norway hosts Europe’s first plasma-powered excavation trial

EarthGrid has successfully demonstrated its Plasma Excavation System (PES) in Norway, marking the first use of plasma-powered rock removal technology in Europe. Conducted in collaboration with the No...

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Alpine Geology Overcome: Brenner Tunnel Milestone Reached

The Brenner Base Tunnel (BBT), stretching 64 km including the Innsbruck bypass, has achieved a significant milestone with the connection of its exploratory tunnel between Austria and Italy. This achi...

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Rock Mass Classification Systems: A Global Review of Use and Dominant Approaches

Rock mass classification systems (RMCS) have been a cornerstone of geotechnical engineering practice since the mid-20th century. Designed to provide a structured way of categorizing geological format...

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