SEISMIC PROSPECTING Russian patent published in 2010 - IPC G01V1/20 

FIELD: mining.

SUBSTANCE: there is generated seismic disturbance and it is directed to ground surface; to detect response to disturbance there is used interferometre; the said response in form of transferred particles on ground surface is traced and recorded at stage of detecting; transfer of particles on ground surface is analysed during response period at analysing stage. On the interferometre an array of detectors is arranged into a line running in the same direction as a cross component V_t of rate of relative motion of ground surface particles. Also the detectors are arranged to detect light rays with different angular direction. A formed reference beam of coherent light is united with an object beam reflected from surface to obtain mutual interference in form of a speckle structure representing information on relative motion of surface and the interferometre. There is determined a detector in the array with zero or minimal response to total rate V_tot of motion, thus identifying the detector with response direction line which is arranged normally to V_tot. In this way there is established change of direction of V_tot with course of time related to change with cross component V₁.

EFFECT: simplification of seismic prospecting procedure with detection of P and S- waves.

51 cl, 15 dwg