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The document discusses tunnel boring machines (TBMs), including their definition, types, components, guidance systems, and construction processes. TBMs are used to excavate tunnels through various soil and rock types. They are classified based on the geological conditions they are designed for, such as open hard rock, shielded hard rock, and soft ground TBMs. Key components include a cutting head equipped with disc cutters, a main bearing and thrust system, a screw conveyor, and shield jacks. Guidance syste

Author

Uji Fauziah

Language

EN