Underground fracture detection method and system based on quasi-static alternating magnetic field difference
By using a method based on the difference of quasi-static alternating magnetic fields and acquiring and processing magnetic field data using a magnetic field sensor, the problem of insufficient accuracy in small-volume crack detection in existing technologies is solved, achieving crack detection with higher reliability and wider applicability.
CN122260490APending Publication Date: 2026-06-23CENT SOUTH UNIV +1
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2026-04-22
- Publication Date
- 2026-06-23
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Figure CN122260490A_ABST
Abstract
The application discloses a kind of underground fissure detection methods based on quasi-static alternating magnetic field difference, including obtaining the data information of target detection area;In target detection area, a plurality of magnetic field sensors are set, and the natural alternating magnetic field time series of setting position is obtained;Time series is converted into frequency domain magnetic field sequence and the corresponding magnetic field amplitude difference and magnetic field phase difference are calculated;Qualitative determination is carried out to the underground fissure of target detection area and corresponding depth estimation is carried out;Based on the data information obtained, the detection of the underground fissure of target detection area is completed.The application also discloses a kind of systems for implementing the underground fissure detection method based on quasi-static alternating magnetic field difference.The application not only realizes the detection of underground fissure, but also has higher reliability, better accuracy, and the application range of scheme is also wider.
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