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]
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DC Water Christens TBM “Lady Bird”
The District of Columbia Water and Sewer Authority (DC Water) recently christened a new Tunnel Boring Machine ‘Lady Bird’ in honor of former first lady Claudia Alta ‘Lady Bird’ Taylor Johnson. The roughly 23-ft diameter […]
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Blasting for NY subway construction showers street with debris
Blasting for the New York MTA’s Second Avenue Subway project unexpectedly showered the street level with debris, damaging buildings. Fortunately there were no injuries. Some debris reached the height of a 5 story building. [Source: […]
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Gotthard Base Tunnel Achieves Milestone
On October 15, a major milestone was reached on Europe and the World’s longest rail tunnel. The Gotthard Base tunnel under the Swiss Alps will form a high speed rail link between northern and southern […]