Statistical and geostatistical analysis of drilling parameters in the Brenner Base tunnel
This paper deals with the statistical and geostatistical analysis of drilling parameters for predicting the rock-mass quality ahead of the tunnel face. For this purpose hammer drillings equipped with data loggers (DAC tests) were performed ahead of the tunnel face in order to carry out a preliminary assessment of the rock-mass conditions before the excavation. The study presents an analysis and correlation study between the measured data and the rock mass quality, expressed by the Rock Mass Rating (RMR) index.