Special-shaped TBM
Tube Curtain Machine
The tube curtain machine jacks steel pipes to form a 'pipe curtain' as advance support, suiting large-section, shallow-cover excavations where minimal ground settlement and high safety are required.

Features
Suits soft soils, hard rock and other strata, with maximum design daily advance up to 20 m
Capable of pipe-curtain construction without a reception shaft
Foldable cutterhead allows full retraction of the machine and re-launch into the tunnel for further excavation
Active deviation correction enables curved-alignment construction
Configuration and engineering
Every CRCHI TBM is engineered to project. Shield diameter, cutterhead geometry, drive power, segmental ring design and back-up arrangement are configured to the alignment, ground conditions and water pressure of the drive. Project-specific scope beyond the standard envelope is engineered to brief, and where a drive calls for it, a machine is developed from the ground up. CRCHI Australia is the engineering, commercial, commissioning and aftermarket point of contact for Australian projects.
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