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| | Abstract | | The Kuster-Toksoz model (K-T model) was applied to the seismic velocity data obtained in well loggings and laboratory tests to model cracked rocks. The K-T model as an inclusion model can calculate effective elastic properties of the rock with cracks based on equivalence of seismic scattering energies due to the whole rock and cracks as inclusions. In this study, the K-T model was applied to P-wave velocity logs obtained in granite with cracks for estimating crack features such as their shapes and densities. These estimates were verified by comparing them with the borehole Televiewer images and crack features derived by their analyses. It is also demonstrated that this model can be used for quantitative interpretation of seismic velocity reduction due to excavation damage of a tunnel, which has been recognized in many surveys in the past. |
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