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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Crossrail – the engineering geology
For those outside the UK, the Crossrail project is a mega-project upgrade to the London metro area’s subway system. The tunneling portion of the project will consist of 21-km of twin-bore tunnels excavated by eight […]
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Finnish Deep Nuclear Waste Disposal Reaches Milestone
Finland is leading the world when it comes to permanently disposing of spent nuclear fuel in a deep geologic repository. Their Onkalo facility recently completed excavation of the first of five final disposal tunnels, a […]
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Bertha Tunneling to Resume 1 Month Later Than Planned
The Seattle Tunnel Partners JV announced last month that tunneling on the Alaska Way Viaduct Replacement project will resume a month later than originally planned. The Bertha TBM will resume mining on December 23 after […]