Seismic tomography in civil engineering investigation

Seismic processing begins to appear as a new method not only in the applied geophysics of great depth but even in geophysics in civil engineering, hydrogeology and environment. The application of seismic tomography in civil engineering investigation is described. This task was done for PC computers. The main ideas of mathematical and software solution are given. The obtained solutions enable not only the tomography processing of crosshole measurements but it is possible to model various geological situations. Examples of crossgalleries processing and results from extending seismic logging are given. These types of measurements are the most common in civil engineering investigation. There is one example from the noninline measurement too. The results of described solution is not only the velocity contour line map but even the map with seismic curved rays among shot points and receivers.