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(Us vs Th3m)   Not news: London Underground's Victoria line disrupted. News: Due to equipment room being flooded. Fark: With concrete   ( usvsth3m.com) divider line
    More: Strange, secrets, Pimlico Race Course, civil engineers, equipment room  
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3008 clicks; posted to Main » on 23 Jan 2014 at 4:19 PM (4 years ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»

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2014-01-23 04:46:49 PM  
1 vote:
In this area, they were carrying out compensation grouting, to avoid settlement and heave in the hygroscopic clay which underlies most of London. This involves pumping a cementitious mixture down pre-drilled shafts to reinforce the subsoil. On rare occasions the shafts break through into voids, including, under Tottenham Court Road, a plague pit (!). A very rapid increase in flow rate should trigger a halt to pumping.

My supposition (I was a real engineer, rather than a civil, but this is a fairly well-educated guess) is that in this case there was a breakthrough into the control room during drilling or pumping.
2014-01-23 04:31:39 PM  
1 vote:

Not much detail but more than subby's link.

/not a dig at subby
2014-01-23 04:25:12 PM  
1 vote:
Pictures and "Oh golly" stuff is fine, but would it kill you to maybe put in a brief explanation of WHY this happened?
2014-01-23 04:25:00 PM  
1 vote:
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