Tunnel boring machine

Details Tunnel boring machine Tunnel boring machine

E - Fixed Constructions

21

D

262/54

E21D 9/08 (2006.01) E21D 9/11 (2006.01)

Patent

CA 2030180

Abstract: Tunnel boring machine for reaming of a pilot tunnel (11). The machine housing (12) is provided with a projecting part in front of the boring head (13), said projecting part comprising a part (20) being fixed relative to the machine housing and a shield (19) being separable from the fixed part. ut189016

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