| 摘要 |
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 Vt 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 Vtot of motion, thus identifying the detector with response direction line which is arranged normally to Vtot. In this way there is established change of direction of Vtot 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 |
