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THE USE OF THE SPECIFIC DRILLING ENERGY FOR ROCK MASS CHARACTERISATION AND TBM DRIVING DURING TUNNEL CONSTRUCTION (2009)

Recording drilling parameters is a useful and economical technique for acquiring geomechanical information of rock mass parameters. Although it is not usually emplyed at geotechnical boreholes it is systematically used in TBM. This paper shows the obtained correlations using the data coming from a 80 m long pilot borehole as well as from the data recorded while the excavation of the Guadarrama tunnel.
Reference:
ITA-AITES World Tunnel Congress 2009, Budapest, Hungary
Organization:
Universidad Politcnica de Madrid, Spain
Spain
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