4.7 Article

Full-Scale Linear Cutting Tests to Propose Some Empirical Formulas for TBM Disc Cutter Performance Prediction

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Summary: This study investigates the behaviors of disc cutters in full-scale linear cutting tests, comparing experimental results with semi-theoretical prediction models. The study found that when cutting low strength rocks, higher experimental normal and rolling forces were obtained, while cutting extremely hard rocks yielded opposite results. An empirical disc cutter cutting force prediction model was suggested, and the study showed that rock uniaxial compressive strength can be reliably evaluated from disc cutter cutting forces. However, the estimation results for rock Brazilian tensile strength were not as accurate.

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