Secondary shaft lining milestone reached on Tideway’s central contract
Completion of the secondary lining on Tideway’s Victoria Embankment Foreshore shaft in London marks a key point in the work and clears the way for in...ut to begin. https://www.newcivilengineer.com/latest/secondary-shaft-l...Reply on topic: Chennai Metro; road sinking issue in R. A. Puram addressed
https://www.mylaporetimes.com/2023/09/chennai-metro-road-sinking-issue-in-r-a-puram-addressed/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.cmsReply on topic: This sinking Himalayan town reveals the dark side of India's hydropower boom
https://www.euronews.com/green/2023/01/17/this-sinking-himalayan-town-reveals-the-dark-side-of-indias-hydropower-boomHS2 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: Is Joshimath subsidence caused by tunnel works?
https://edition.cnn.com/2023/01/13/india/india-joshimath-uttarakhand-sinking-city-intl-hnk-dst/index.htmlReply 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.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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