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Excavation Dewatering in PLAXIS: An Iterative Approach to Find Pore Pressure Equilibrium for Better Stability begins on Aug 6th 2026
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Underground Structures News

Geotechnical studies for Nashville's tunnel Music City Loop have began

Tennessee has taken a key first step toward construction of a new underground transit system as The Boring Company was granted a no-cost lease for a state-owned parking lot in Nashville to support in...

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Repair of massive 50-meter sinkhole in Bangkok enters new challenge after structural breach

In the early hours of September 26, emergency efforts to stabilize the massive sinkhole in front of Vajira Hospital on Bangkok’s Samsen Road were paused after approximately 1,500 tonnes (around 700 c...

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Massive 50-meter sinkhole swallows road in Bangkok

A road collapse in central Bangkok has produced a sinkhole approximately 50 meters deep and covering some 900 square meters, disrupting traffic, damaging infrastructure, and prompting evacuations in...

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Cincinnati to study repurposing of abandoned subway tunnels

The City of Cincinnati has issued a Request for Proposals (RFP) for a feasibility study to explore adaptive reuse options for its unused subway tunnel system beneath Central Parkway. The tunnel infra...

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Innovative Triple-Circular Pipe Roofing Machine to Support Sanya Estuary Tunnel

A new triple-circular pipe roofing machine, named “Lucheng,” has been developed to advance the Sanya Estuary Passage Project in Hainan Province, China. The tunnel will provide a critical connection b...

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Fehmarn Belt Tunnel: World’s Longest Immersed Tunnel Faces Delays

The Fehmarn Belt Tunnel, designed to connect Rødbyhavn in Denmark with Fehmarn in Germany, is one of Europe’s most ambitious infrastructure projects. Spanning 18 kilometers beneath the Baltic Sea, it...

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Artificial Ground Freezing as a Tool in Urban Tunnelling

The construction of cross passages along High Speed 2’s (HS2) London tunnels represents the most extensive application of artificial ground freezing (AGF) in the UK. These cross passages, typically 5...

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The Los Angeles Clearwater Collapse. Insights On The Causes and Technical Response

On the evening of July 9, 2025, a structural failure occurred deep beneath Wilmington, Los Angeles, when a section of the Clearwater Tunnel collapsed. The project is a major component of a $700 milli...

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Seoul’s Underground Infrastructure Raises Ground Stability Concerns

Seoul’s recent sinkholes have raised public safety concerns and questions on how existing and future underground infrastructure affects such events.  On March 25th, as you can see in the following vi...

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55 Kilometres to Net Zero: Inside the Viking Pipeline Project

A new chapter in the UK’s low-carbon journey begins with the approval of a £200 million underground pipeline stretching 55 kilometers from Immingham to the Theddlethorpe Gas Terminal on the Lincolnsh...

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