sewer – GeoPrac.net

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

Tunneling ground loss sinkhole opens in Beijing street, swallows truck

June 6, 2011 rockman Comments Off

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 […]

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

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

June 29, 2010 rockman Comments Off

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 […]

12 Miles of Tunnels for D.C. Sewer

September 11, 2009 rockman Comments Off

Anacostia River in Washington D.C. In Washington D.C., the D.C. Water and Sewer Authority (D.C. WASA) finalized a lont-term plan in 2002 aimed at reducing combined sewer outfalls into the Potomac River and its tributary, the Anacostia River. A major portion of this plan is a $2.2 Billion (US) deep tunnel program to handle excess stormwater flows and prevent the combined sewage from being discharged into the environment. Read on for a map and more info. (Photo of Anacostia River, by D.C. WASA)

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