14K views · 393 reactions | TBM breakthrough in an underground...

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Tunnel Boring Machine (TBM) assembly in TTSM project in London. This is a time lapse camera of lifting the TBM shield into the Drive Shaft. Internal diameter of tunnel: 3m Length of tunnel: 800m Geology: Lambeth Group for almost 60-70 percent and Thanet Sand for 30-40 percent of tunnel length. TBM type: Earth Pressure Ballance (EPB) #tunnelling #tunnel #tunneling #TBM #tunnelboringmachine #lifting #assembly #crane | tunnel.engineering

25 reactions | #fyp #foryou #TBM #tunnel #machine #construction #subway #heavyequipment | inspectornap | Facebook

Tunnel Boring Machine (TBM) construction is a mechanized tunnelling method used for excavating underground tunnels with minimal surface disruption. A TBM is a massive cylindrical machine equipped with a rotating cutterhead that excavates soil or rock while advancing forward. The excavated material is transported out of the tunnel via conveyor belts muck transportation or slurry pipelines, depending on the TBM type. Simultaneously, pre-cast concrete segments are installed along the tunnel walls t