Excavation at the tunnel launch shaft near Exhibition Station is complete! In total, more than 42,000 m³ of materials were excavated to build a 215-metre-long structure that is almost ready to launch the tunnel boring machines (TBMs)! The launch shaft will serve as the starting point for the TBMs to begin their nearly 6-kilometre journey beneath the downtown core to just west of the Don River. Once tunnelling is complete, it will become the tunnel portal where Ontario Line subway trains will tra
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Excavation at the tunnel launch shaft near Exhibition Station is co…
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Excavation of shaft inside D-wall panels. Video credit: LinkedIn Colm o Connor #shaftexcavation #shaftconstruction #dwall #excavation #tunnelengineering #artoftunnelling #tunnel #tunnelengineeringisthefuture #tunnel #tunnelling #tunneling #tunel #civilengineering #miningengineering #knowledge #learntunnelling #tunnelphoto #geotechnicalengineering #geologist #undergroundconstruction #undergroundspace #undergroundproject #تونلسازی #tunellingtechnique #tuneldeviento #tünel #tunelbana #túnel #tunnel
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Excavation of shaft inside D-wall panels. Video credit: LinkedIn Col…
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The drill and blast method can be used for constructing shafts in rock, similar to its use in tunnelling. In both cases, explosives are placed in drilled holes to fracture the rock, allowing for excavation. However, in shaft construction, the drilled holes are oriented vertically downward, whereas in tunneling, they are drilled horizontally. Despite this difference in drilling direction, the underlying principle remains the same: controlled blasting breaks the rock into manageable pieces for rem
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The drill and blast method can be used for constructing shafts in ro…
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Subway tunnel excavation with New Austrian Tunneling Method with excavator
Subway tunnel excavation with New Austrian Tunneling Method with e…
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