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HomeNewsProject RelatedSeattle Light-Rail Tunnel Likely to Break Ground This Year

Seattle Light-Rail Tunnel Likely to Break Ground This Year

February 11, 2008 rockman Project Related Comments Off on Seattle Light-Rail Tunnel Likely to Break Ground This Year

 

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Failures

Tunnel Collapse Caught on Video

December 20, 2016 rockman Failures Comments Off on Tunnel Collapse Caught on Video

According to the site Geotechpedia, this tunnel failure occurred on November 29, 2016 around 9am (local time?). The tunnel is located in Yusufeli district of Erzurum in northeastern Turkey. It is somehow related to the […]

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Project Related

TBM Stuck on Pittsburgh North Short Connector Project

April 28, 2008 rockman Project Related Comments Off on TBM Stuck on Pittsburgh North Short Connector Project

ENR reports that a Tunnel Boring Machine or TBM is stuck for the second time in two weeks on Pittsburgh’s light rail expansion project dubbed the North Shore Connector Project. As we described in a previous post, the project will consist primarily of a tunnel underneath the Allegheny River.  The drilling began the week of March 3 and has been progressing at a rate of 30-ft/day or 5-ft/day faster than the original goals. Read on for a location map of the project, or download the Google Earth KMZ file showing the project area. (File photo of TBM)

[…]

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Brightwater Tunnel Boring Machine BT-2, nicknamed Helene. It was stuck some 300-ft underground for sever months while waiting for repair parts.
Project Related

King County, WA sues contractor on $1.8B Brightwater Sewer Project for cost and schedule overruns

June 29, 2010 rockman Project Related Comments Off on King County, WA sues contractor on $1.8B Brightwater Sewer Project for cost and schedule overruns

Current projections put the project completion 35-months behind schedule because of problems with a portion of the TBM constructed tunnel. The County is suing for $74M in damages associated with the delays. This massive sewer […]

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