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ground loss

Sinkhole (now filled with concrete) caused by ground loss during Bertha Tunneling
Project Related

More Trouble for Bertha TBM, Sinkhole, Tunneling Suspended

January 22, 2016 rockman Comments Off on More Trouble for Bertha TBM, Sinkhole, Tunneling Suspended

The Bertha TBM creating the Alaska Way Viaduct Replacement Tunnel and the Seattle Tunnel Partners JV just can’t seem to catch a break. After being stopped for nearly 2 years to replace the entire cutterhead […]

Western side of the Colosseum or Flavian amphitheatre, 70/72 - 80 DC in Rome. By Jean-Pol GRANDMONT
Project Related

Rome Colosseum at risk from subway expansion – activists

March 10, 2013 rockman Comments Off on Rome Colosseum at risk from subway expansion – activists

Members of an Italian herritage association claim that tunneling 50 meters below the streets of Rome would put the Roman Colosseum at risk of collapsing. Here is an excerpt from the article I found: "The […]

Sinkhole in a Beijing Street on April 26, 2011 - possibly resulting from tunneling ground loss from Beijing subway construction
Failures

Tunneling ground loss sinkhole opens in Beijing street, swallows truck

June 6, 2011 rockman Comments Off on Tunneling ground loss sinkhole opens in Beijing street, swallows truck

On April 26, a sinkhole opened up in a busy Beijing street in China’s capital city, swallowing up a truck. According to news reports, the driver and passenger jumped out of the vehicle before it […]

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