Tunnelling

TBM can be considered a “multitasking automated enterprise” able to:
– handle excavation and remove detritus,
– position prefabricated tunnel lining segments and seal them with plastic mixtures
Conventional TMBs can be used in rocky grounds; Earth Pressure Balance Machine (EPBM) for clays and limestone; Slurry Shield Machine (STBM): for gravel, sand.