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PREDICTION OF THE GROUND CONDITIONS AHEAD THE TBM FACE IN THE TUNNELS OF GUADARRAMA (SPAIN), USING GEOPHYSICAL METHODS AND IN SITU TESTING (2007)

Electrical Resistivity Tomography (ERT) profiles along the axis of both tunnels. Also several geophysical investigation methods have been applied, in order to allow a good knowledge of the rock mass. In situ geotechnical tests have been also carried out, yielding ground geomechanical parameters.
Reference:
ITA-AITES World Tunnel Congress 2007 - Underground Space - the 4th Dimension of Metropolises
Organization:
Geocontrol S. A., Spain
Spain
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