And a train was actually hit! Fortunately it was stationary on the tracks, but it crushed the side panel of the driver’s carriage. Neither the driver nor any passengers were injured in the incident. The drill rig was drilling to install ground source heating or geothermal heating for a hotel when at a depth of 20 to 25 meters (65 to 82-ft), the drillers noticed that they lost resistance when they punched through the subway tunnel. Upon withdrawing the drill stem, they were missing the bottom 2.5-m according to a local police official. Story at The Local. (Photo of N.Y. Subway from runnx)
I was reading the ASCE News, January edition which announced the 5 finalists for the 2010 Outstanding Civil Engineering Achievement (OCEA) Award and I was struck by the significant geotechnical engineering and geoengineering components of these projects. Read on as I highlight some of things hidden beneath the ground of these remarkable projects. […]
The US House of Representatives passed legislation approving a national tunnel inspection program. This of course came about as a result of a fatal accident from 2006 in a tunnel on Boston’s Big Dig project where a concrete ceiling tile fell on a car killing one person. More after the break.
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, […]