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Tomography is a geophysical method for the investigation of the subsoil between boreholes. The penetration of the subsoil under multiple angles is archived based on a successive position change of a signal source to a receiver.
The obtained physical information are numerically processed by means of a mathematical inversion algorithm. A spacial distribution of the wave velocities matching the measured travel times most closely is the result of the measurement. With the help of correlation models the lithological structure of the site can be derived.
Additional information can be found in: Dynamic_SoilProperties_Tomo.pdf
Main fields of application of seismic tomography are the site investigation for construction projects (construction_site_testing.pdf), the slope stability and the evaluation of the safety of old mines (old_mine_safety.pdf). Seismic tomography is related to p-waves traditionally but also s-wave tomography has been used already (shear_wave_tomography.pdf). A new trend in seismic tomography is the installation of sender or/and receiver in direct push probes (pwaveprofiling.pdf) avoiding the expenses for boreholes .
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