Tunnel boring machine

Details Tunnel boring machine Tunnel boring machine

E - Fixed Constructions

21

D

E21D 9/10 (2006.01) E21B 4/20 (2006.01) E21B 7/06 (2006.01) E21B 7/20 (2006.01) E21D 9/12 (2006.01) E21D 9/06 (2006.01)

Patent

CA 2185058

The present invention relates to a tunnel boring machine having a cutting head rotatably mounted on the end of a housing and being driven by a first motor means and a rotatable central auger for removal of soil from the cutting operation mounted in the interior of the housing, the central auger being driven by a second motor means to allow rotation of the auger independent of the rotation of the cutting head. The tunnel boring machine may also be provided with a rock crusher between the cutting head and the auger to reduce boulders encountered during the tunneling to a size to be able to be transported by the auger.

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