Hard-rock TBM

Open-type TBM

Open-type TBM

- Advance borehole drilling; advance support; direct observation of  lithology change; easy to draw geological map.
- Hardox plate, composite chromium-carbide wear-resistant plate as well as hard alloy block with high wear resistance are materials of the cutter-head, which ensures long service time.  
- Double row cylindrical roller thrust bearing is used in the masterdrive, ensuing long service lifetime and high safety. 
- Reliable and high-efficient PLC control system, real time on-line monitoring and data collection.
- Innovative multi-material transport system ensures safety and high efficiency in the process of material transportation.  
- Equipment is easy to dismantle and install due to proper allocation of equipment.
- Foam system with single tube and single pump performs reliably and its injection parameters can be consecutively adjusted. 

Product type  Open-type
Equipment model ZTT7930 ZTT6530 ZTT4030
Excavation diameter 7930mm 6530mm 4030mm
The whole machine’s length 185m 250m 210m
thrust stroke >1900mm >1700mm
The maximum designed advance rate 120 mm/min
The maximum auxiliary advance rate --
The minimum turning radius 500m
Designed service lifetime of main parts 15000h
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