煤田地质与勘探2025，Vol.53Issue(5)：207-216,10.DOI:10.12363/issn.1001-1986.24.12.0817
无人机探地雷达对水体和空洞的探测应用研究
Application of a UAV-borne GPR system in the detection of water bodies and cavities
摘要
Abstract
[Objective and Methods]The unmanned aerial vehicle(UAV)-borne ground-penetrating radar(GPR)sys-tem,enjoying the advantages of high resolution and non-contact detection,is applicable to the detection of water accu-mulation in coal seams and goaves in mines.Therefore,this study proposed a rapid detection method based on a UAV-borne air-coupled GPR system to enhance the exploration efficiency of mining areas and reduce the time and risks of manual explorations.Given the limitations of the test scenarios in actual coal mines,this study investigated the water body of the Fanxiong reservoir in Ezhou City and surrounding drainage culverts for equivalent validation,aiming to as-sess the application potential of the proposed UAV-borne GPR system in water depth and cavity detection.Additionally,to improve the quality of signals collected using the system,singular value decomposition and constant proportional gain technique were employed to enhance the reflected signals from the water bottom and culverts.[Results and Conclu-sions]The experimental results indicate that the proposed UAV-borne GPR system could effectively detect the trend in the water depth in the Fanxiong reservoir(maximum depth:6 m)and identify the reflected signals from the drainage cul-verts with a diameter of 1 m(distance from the culvert top to road surface:1 m).This demonstrates the reliability and ef-fectiveness of the system in water body and cavity detection.Compared to traditional methods,the data processing meth-od based on the proposed UAV-borne GPR system can significantly enhance the reflected signals from the water bottom and culverts.Specifically,the entropy value and elevated root mean square(RMS)contrast of the processed B-scan sig-nals increased by 12.7%(from 3.70 to 4.17)and 55%(from 0.11 to 0.17),respectively.This led to improved identifiabil-ity of waveform features,as well as enhanced accuracy and intuitiveness of data interpretation and analysis.As the UAV flight altitude increased from 2 m to 4 m,the intensity of signals from the water bottom was significantly attenuated(RMS contrast decreasing from 0.27 to 0.22),and the radii of curvature of the culverts'reflection curves decreased.The results of this study will provide a theoretical basis for detecting the water accumulation areas and goaves in coal mines using a UAV-borne GPR system.关键词
无人机/探地雷达/奇异值分解/煤层积水/采空区探测Key words
unmanned aerial vehicle(UAV)/ground-penetrating radar(GPR)/singular value decomposition(SVD)/wa-ter accumulation in coal seams/goaf detection分类
天文与地球科学引用本文复制引用
王莹,孙晨晨,张路,陈奕飞,卢松,周峰..无人机探地雷达对水体和空洞的探测应用研究[J].煤田地质与勘探,2025,53(5):207-216,10.基金项目
国家自然科学基金项目(42374179) （42374179）
中国中铁股份有限公司科技研究开发计划(2023-专项-05) （2023-专项-05）
中央高校基本科研业务费教育部B类重点实验室主任基金项目(GLAB2023ZR05) （GLAB2023ZR05）
湖北省自然科学基金联合基金项目(2024AFD417) （2024AFD417）
长大桥梁健康安全与韧性提升技术浙江省工程研究中心开放基金项目(20240005) （20240005）
