The Variable Density TBM

„Our machines operate in highly diverse geological and hydrogeological conditions“ says Matthias Schwärzel, who has led several tunnelling projects for Herrenknecht in his role as Division Manager, Project Management Traffic Tunnelling. “These conditions pose challenges for clients, planners and contractors that are never the same from one project to the next. Working closely with our […]

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Metro Lyon

Just short of the finish line, there was one anxious moment for “Coline”, as the miners called their TBM: 2.4 kilometers into the highly successful operation on an extremely demanding section of Lyon’s subsurface, the TBM was just a few meters from breakthrough when the monitoring systems flashed up some unexpected values. In the control […]

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