Grouting work done earlier in the week was a possible cause of a bulge in the lining of a train tunnel under the River Thames. Two trains hit the bulge before the line was closed, but neither train derailed. [Source: New Civil Engineer]
Miscellaneous
Port Authority Covers Hudson Subway Tunnels with Blast Shields to Protect Against Terror Attacks
The century-old PATH subway tunnels underneath the Hudson River were not excavated through bedrock, but rather under a thick layer of silt and clay. Apparently there is a a sufficient security concern to warrant protecting […]
Project Related
London Crossrail Project – Europe’s Largest Construction Project
Seven new design contracts were issued today for the Crossrail project including four central London Stations and three significant portals. According to the New Civil Engineer, the project is being called "Europe’s Largest Construction Project". […]
Project Related
London’s Crossrail Cores Going to Salt Mine
London’t mega-project known as Crossrail that involves the construction of 118 km (73 mi) of new rail line with 42 km (26 mi) of new tunnels. The geotechnical investigation for Crossrail included rock coring, and […]