Tunnel-driving machine

Details Tunnel-driving machine Tunnel-driving machine

E - Fixed Constructions

21

D

E21D 9/10 (2006.01) E21D 9/08 (2006.01) E21D 11/40 (2006.01)

Patent

CA 2152687

A tunnel-driving machine includes rotating drilling tools. At least one support capable of being placed against the tunnel wall or tubbings is provided. A lost shield is arranged in the region of the drilling tools so as to be displaceable in the advance direction. The shield is supported via abutment arms in the advance direction on the driving machine or on a pressing means or the end faces of set tubbings.

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