US 12,242,007 B2
Small-scale geological anomalous body detection method and device
Peng Lin, Beijing (CN); Jingtao Zhao, Beijing (CN); Suping Peng, Beijing (CN); and Xiaoqin Cui, Beijing (CN)
Assigned to CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING, Beijing (CN)
Filed by CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING, Beijing (CN)
Filed on Oct. 20, 2021, as Appl. No. 17/506,577.
Claims priority of application No. 202010846124.7 (CN), filed on Aug. 20, 2020.
Prior Publication US 2022/0196865 A1, Jun. 23, 2022
Int. Cl. G01V 1/36 (2006.01); G01V 1/30 (2006.01); G01V 1/34 (2006.01)
CPC G01V 1/362 (2013.01) [G01V 1/301 (2013.01); G01V 1/306 (2013.01); G01V 1/34 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A small-scale geological anomalous body detection method, comprising following steps of:
acquiring, by one or more processors, diffracted wave shot-gather data collected in a to-be-processed area, and determining target single shot data in the diffracted wave shot-gather data, with the target single shot data having a distance to a position of at least one center point which is a predetermined distance;
calculating a first horizontal distance between the at least one center point and each shot point in the target single shot data and calculating a second horizontal distance between the at least one center point and a detection point corresponding to each shot point;
constructing a common-diffraction-point gather of the at least one center point based on the first horizontal distances and the second horizontal distances corresponding to the at least one center point; and
processing the common-diffraction-point gather of the at least one center point by using a correction algorithm of diffracted wave events to obtain a diffracted wave imaging profile;
and positioning an underground space abnormal structure by using the diffracted wave imaging profile.