#tunnel-boring-machine

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London
fromianVisits
3 days ago

Giant TBM starts digging tube-train sized tunnel beneath the Thames

A 270-tonne tunnel boring machine has begun excavating a 2.2-kilometre electricity cable tunnel beneath the River Thames in east London, replacing infrastructure from 1969 and expected to complete by 2029.
fromwww.bbc.com
1 month ago

Construction begins on HS2 tunnel from west London to Euston

The 190m-long boring machine is named Madeleine, after Madeleine Nobbs, the former president of the Women's Engineering Society. It is expected to take about 18 months for the machine to complete the 4.5-mile journey from Old Oak Common in west London. Madeleine was built in Germany and transported to the UK in parts. A 750-tonne crane lifted the components into an underground box at one end of the station, where it was reassembled.
UK politics
Silicon Valley
fromSan Jose Spotlight
4 months ago

Silicon Valley transit agency picks single tunnel for BART extension - San Jose Spotlight

VTA approved a single-tunnel plan to close a $700 million funding gap, accepting significant tunneling and contractor risks to secure federal funds.
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