Full-scale granite cutting experiments using tunnel boring machine disc cutters at different free-face conditions

This study presents the results of full-scale hard rock (granite) cutting experiments using tunnel boring machine disc cutters at different free-face conditions. Rolling cutting tests are conducted on a full-scale rotary cutting machine with a commercial constant cross-section disc cutter with a diameter of 432 mm. Three free-face conditions are prepared for the tests: vertical free faces, inclined free faces (with different heights and cut...