Seismic tomography applied to control of jet grouting.


Seismic tomography is an investigation method that allows us to obtain information about seismic velocity distribution in the subsurface through an inversion process applied to measured traveltimes (traveltime tomography).

This type of geophysical approach is generally applied between two boreholes (cross-hole tomography). Nevertheless, it can also be used using a single borehole (tomographic seismic sounding); in this case acquisition geometry provides the deployment of sensors inside the borehole while the seismic energy is produced on the surface along a linear trend.

This method can also be applied to refraction seismic, profitably integrating the results with the classical first breaks interpretation.