TBM (Tunnel Boring Machine) is a machine used to excavate tunnels with a circular cross-section through undeground or mountains with variety of material usch as soil and rock. TBM have serveral types for different geology and amount of ground water presents, and with different diameters for different design of the tunnels.

This build consists 2 types of TBM, EPB (Earth pressure Balance) TBM and SS (Slurry Shield) TBM, for soft ground conditions with different gound water pressure and amount of granular materials. Showcases are included in the map such as the whole structure of the TBM, a disassemble showcase, and a simulation of the TBM opertaion underground. These TBM structure are replicas from large diameter TBMs (over 10m dia.) in smaller scale, thus some facilities and details may not showout in the replicas. However sufficient structures of the TBM are made including components in the TBM shield and back-up gantries.

This scaled - down replica is suitable for constructing 3x3 meters internal diameter tunnel in Minecraft but no actual redstone structures for building tunnels underground in this map (only simulation of excavating and installing segments).

More types and diameters of TBM may be released in the future.

Specification (scaled-down model for tunneling 3x3 inter-dia. Minecraft-style tunnel):

Earth Pressure Balance TBM:
- Length: 43.25m (10.19m of Shield + 33.06m back-up gantries)
- Diameter: 7m (outer) / 3m (inner of built tunnel)
- Excavated area: 45m^2
- Max. advance speed: ~100mm/min
- Weight: ~600 blocks (total)


Slurry Shield TBM:
- Length: 52.25m (13.19m of Shield + 39.06m back-up gantries)
- Diameter: 7m (outer) / 3m (inner of built tunnel)
- Excavation area: 45m^2
- Max. advance speed: ~100mm/min
- Weight: ~750 blocks (total)


p.s.: The .schematic file only consists the EPB type TBM