关键词: 探地雷达, 空区探测, 地质异常, 矿区安全

Abstract: To address the safety production threats posed by coal seam spontaneous combustion， abandoned areas，and geological loose zones at Lutian Coal Mine，the effectiveness of ground-penetrating radar technology in accurately detecting such geological anomalies was proposed and verified. The study employed the imported Pulse EKKO PRO ground-penetrating radar，used a 50 MHz center frequency an⁃ tenna. Six total-length 1 393 m survey lines were set up in the south wing of the fourth mining area. Through systematic data collection，terrain correction，filtering and noise reduction，gain adjustment，and deep conversion processing procedures，high-resolution imaging and interpretation of underground struc⁃ tures were conducted. The research results showed that 20 geological anomaly points were successfully identified. Among them，7 points were determined to be cavities（with a burial depth of 17 to 46 m），and their radar profile characteristics were "strong amplitude clusters + signal interruption". The other 13 points were areas of loose or non-solidified strata（with a burial depth of 8 to 35 m），presenting disor⁃ dered reflection textures and slight amplitude fluctuations. The drilling verification results were highly con⁃sistent with the radar interpretation，confirming the reliability of this technology. The conclusion is that ground-penetrating radar，with its advantages of high signal-to-noise ratio，large detection depth（up to 60 m），high resolution（0.5 m），and high sensitivity，can effectively complement the shortcomings of tra⁃ ditional drilling，transient electromagnetic，etc. methods，providing an efficient and non-destructive tech⁃ nical means for the precise exploration of geological anomalies in open-pit coal mines，and has significant engineering application value for ensuring mine safety and improving mining efficiency.

Key words: ground-penetrating radar, goaf detection, geological anomalies, mine area safety