... and selection of the most appropriate excavation machine. During the past three decades, numerous TBM performance prediction models for evaluation of TBM have been proposed. In brief, all the TBM performance prediction models can be divided into two distinguished approaches, namely theoretical and empirical...

..., a detailed fracturing analysis is essential which will enable us to determine if the intact rock or rock mass properties control the boring process. This study is a brief analysis of performance predictions using the CSM, Gehring and NTNU models for a 7.2 m diameter open gripper TBM on an ongoing hydropower...

... Abstract Full scale linear cutting tests are regarded as a reliable basis for performance prediction of hard rock Tunnel Boring Machines (TBM). However, obtaining suitable specimen is difficult and the effort to perform a feasible number of cutting tests is significant. This paper presents...

... (Roxborough&Phillips 1975, Ozdemir et al. 1978, Snowdon et al. 1982, Sanio 1985, Rostami & Ozdemir 1993) and empirical models (Bruland 1998, Nelson et al. 1999, Gong & Zhao 2008, Yagiz 2008, Hassanpour et al. 2009) has been also used for performance prediction. Besides, many researchers have made...

... with the correlation of in-situ data with the results of core cutting tests (Fowell and McFeat-Smith, 1976; McFeat-Smith and Fowell, 1977, 1979). In that study the specific energy obtained from small scale rock cutting test was the key factor in the machine performance prediction. A more realistic model was developed...