Secondary shaft lining milestone reached on Tideway’s central contract
...f the secondary lining on Tideway’s Victoria Embankment Foreshore shaft in London marks a key point i...fit out to begin. https://www.newcivilengineer.com/latest/secondary-shaft-lining-milestone-reached-on-t...Kolkata East-West Metro TBMs retrieved, retreival shaft in Bowbazar to be sealed
Kolkata Metro Rail Corporation (KMRC) has completed retrieving the tunnel boring machine which has bored the East-West line. KMRC now busy filling in the retrieval shaft. https://timesofindia.indiatimes.com/city/kolkata/tbms-retrieved-e-w-shaft-in-bowbazar-to-be-sealed/articleshow/90673145.cmsHS2 wins planning permission to build Chiltern Tunnel ventilation shaft in Little Missenden
The company's plans had previously been rejected by Buckinghamshire Council. https://www.buckinghamshirelive.com/news/buckinghamshire-news/hs2-vent-shaft-little-missenden-6876915Reply on topic: East-West Metro work restarted below Bowbazar
Only to add. That shaft is not only used for taking out the TBM. KMRCL will use the shaft also to pump out the water injected to create a counter-force against the aquifer. https://www.thestatesman.com/bengal/kmrcl-pump-injected-water-durga-pithuri-lane-1502915745.htmlReply on topic: HS2 reveals final design for first Chiltern tunnel vent shaft headhouse
"Barn"shaft designs get planning approval. https://mediacentre.hs2.org.uk/news/hs2s-chilterns-barn-design-vent-shaft-gains-planning-approvalImpact Assessment on Deep Tunnel Sewerage System during Shaft Excavation
This case study contains the impact assessment on DTSS Reinforced Concrete(RC) tunnel induced by the shaft excavation work at Woodlands South Flyover. https://www.youtube.com/watch?v=3nqXjkJLnxI
cover tunnel photo by: Matt Brown from London, England / CC BY
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