Theoretical and Experimental Results from Laboratory Tests by ILCM

Abstract The intermediate linear cutting machine (ILCM) is a designed to work on an scale between the full- and small-scale. reduced involves several advantages compared full-scale tests, especially in terms of sample supplying transportation. On other hand, it has impact testing conditions, resulting limitation penetration spacing during test, as well smaller disc cutter. This affects most results, which cannot be directly used for on-site performance prediction. However, some experimental results provided literature show that optimal spacing/penetration ratio not significantly affected by changes involved. this basis, obtained from ILCM tests should provide reliable information about conditions tunnel boring massive rock mass. performed included development improvements rig, modified procedure, according one typically standard LCM tests. attitude tested lithotypes mechanical excavation means tools, including conditions. Additional was developed detailed characterisation samples involved assessment size distribution debris produced Nevertheless, further are necessary, order assess consistency procedure employed investigate effect.