FIELD: search for mineral wealth. SUBSTANCE: seismic vibrations excited by sources and received by detectors are summed up by common points of reception and excitation to obtain time seismic sections of profile in the form of collection of signals of summary routes. Mentioned sections are rectified by way of input of static corrections. Fixed groups ( bases ) are selected from detectors of seismic vibrations uniformly arranged along profile and summation of seismic vibrations received by detectors on corresponding adjacent bases is carried out per each source. Fixed bases of sources are also selected and summation of seismic vibrations excited by sources on corresponding fixed bases is also carried out per each detector. At least two routes belonging to two different fixed bases of summation spaced along profile are obtained per each detector and source in process of summation. Surface anomalies are isolated on time seismic sections by coincidence sign of time distortions of reflections on time seismic sections related to different bases of summation. Boundaries of anomalies and values of time shift of times of arrival of reflected waves within limits of anomaly relative to smoothed lines of time of arrival of reflected waves conducted by points outside of anomalous districts are established. These time shifts averaged by collection of obtained time seismic sections are entered as static corrections into obtained seismic data. EFFECT: raised authenticity of detection of surface anomalies of various extent thanks to surface-timed summation of data of seismic prospecting. 4 cl, 10 dwg
展开▼
