Experimental evaluation of the effects of cutting ring shape on cutter acting forces in a hard rock

Cutter forces acting on a disc cutter in TBM are the key parameters for TBM design and its performance prediction. This study aimed to experimentally evaluate cutter forces with different ring shapes in a hard rock. The stiffness of a cutter ring was indirectly estimated from a series of full-scale linear cutting tests. From the experiments, it was verified that the rolling stress acting on a V-shape disc cutter was much higher than on a CCS disc cutter even though the penetration depth by a V-shape disc cutter could be increased in the same cutting condition. Finally, it is suggested that a prediction model considering the shape parameters of a disc cutter should be used for its better prediction.

keywords: 디스크커터, TBM, 커터 링, 커터 작용력, CCS, V형상, Disc cutter, TBM, Cutter ring, Cutter acting force, CCS, V shape

Reference

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Article Contents

Vol.15 No.3

Experimental evaluation of the effects of cutting ring shape on cutter acting forces in a hard rock

Abstract

Reference

(사)한국터널지하공간학회