Abstract
The technique developed uses the spectral signature or Fourier Transform of a signal to gain information about the rock mass. This process enables rock masses to be characterised by observing and quantifying the degree by which discontinuities and other rock mass characteristics preferentially filter the various frequency components of an induced signal. The initial analysis has concentrated on using the technique to investigate the dependence of attenuation spectra on discontinuity characteristics. This has been achieved by correlating statistically significant direct parameters with attenuation spectra from the same rock masses. The preliminary results given in the paper indicate the potential usefulness of the technique for characterising discontinuous rock.
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