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Earth Pressure Balance Shield_tbm Tunnel Boring Machine Rotary Drilling Rig - Machine Centre - AliExpress
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Main components of Earth Pressure Balance Machine (Shield Tunneling 2016) | Download Scientific Diagram
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![Construction workers, mostly foreign, exit from a passage in the Earth Pressure Balance Tunnel Boring Machine (EPB TBM), 86 meters in length, 6.1 meters in diameter and weighing 440 tons after it Construction workers, mostly foreign, exit from a passage in the Earth Pressure Balance Tunnel Boring Machine (EPB TBM), 86 meters in length, 6.1 meters in diameter and weighing 440 tons after it](https://c8.alamy.com/comp/W0B5XW/construction-workers-mostly-foreign-exit-from-a-passage-in-the-earth-pressure-balance-tunnel-boring-machine-epb-tbm-86-meters-in-length-61-meters-in-diameter-and-weighing-440-tons-after-it-broke-through-a-remaining-cylinder-of-rock-north-of-pender-street-at-granville-during-an-event-celebrating-the-completion-of-the-first-of-paired-tunnels-for-the-rapid-transit-canada-line-in-downtown-vancouver-british-columbia-april-7-2007-the-epb-tbm-is-laser-guided-and-accurate-to-within-one-inch-and-should-complete-the-second-tunnel-by-march-2008-before-the-2010-winter-olympics-upi-photoheinz-W0B5XW.jpg)