Multi-mode TBM
Multi-mode TBM
Multi-mode TBMs offer two or more excavation modes within a single machine, allowing the operator to switch modes to match changing geology, which improves adaptability, construction safety and overall economy across mixed-face drives.
Features
Multiple excavation modes deliver strong overall economy and meet construction needs across varied ground conditions
Specifications
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| Parameter | Unit | ZTSE 6450 slurry / earth-pressure on-line dual-mode shield | ZTSE 9000 slurry / earth-pressure dual-mode shield |
|---|---|---|---|
| Overall length / weight | About 110 m / about 550 t | About 130 m / about 1,500 t | |
| Cutter head | Composite, excavation diameter 6.48 m, opening rate about 35% | Composite, excavation diameter 9.05 m, opening rate about 35% | |
| Main drive | 3 m main bearing, eight variable-frequency motors | Eight variable-frequency motors, rated torque 12,000 kN·m, breakout torque 13,200 kN·m | |
| Articulation | Passive, minimum turning radius 250 m, maximum gradient 35‰ | Passive, minimum turning radius 500 m, maximum gradient 50‰ | |
| Maximum bearing water pressure | bar | 6 | 6 |
| Back-up | 1 connecting bridge + 8 gantries | 1 connecting bridge + 8 gantries | |
| Installed power | kW | About 2,700 | About 3,500 |
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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