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Tbm Grinding Machine

Tbm Grinding Machine

Aug 18 2010nbsp018332The cutter forces of a small tunnel boring machine TBM were measured in the field 2 According to the measured results for the normal force most peaks of the normal force fluctuations are larger than 60 kN and the corresponding t c 0019 02 s 3 According to the measured results 1 the fracture toughness of gabbro is K I C 3

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