基于双频天线探地雷达技术的地下病害探测研究  

Research on Detection of Underground Disease Based on Dual-frequency Antenna Technology of GPR

作　　者：黄小林 HUANG Xiao-lin(Hunan Lianzhi Technology Co.,Ltd.,Changsha 410200,China)

机构地区：[1]湖南联智科技股份有限公司,长沙410200

出　　处：《价值工程》2023年第32期98-101,共4页Value Engineering

摘　　要：为了解决目前探地雷达检测需重复更换高、低频发射天线来达到不同深度探测的低效率及三维雷达探测浅等问题,提出了一种兼顾浅部数据高分辨率,深部数据高信噪比的大深度、精细化双频天线探地雷达技术。利用GprMax软件平台进行正演模拟常见的地下空洞、脱空、疏松和富水病害,得到了常见地下病害体模拟特征图谱,为实际病害的判读和解译提供参考依据。结合长沙市某城市道路探测实例,通过对比分析高、低频天线探测的雷达剖面,并经钻探验证结果得出:双频天线并行采集高频数据分辨率高,低频数据探测深度大、信噪比较高。该技术可实现道路病害检测向高效率、精细化和大深度方向转型,为城市道路地下病害的快速、精细化和大深度全面排查提供技术支撑。In order to solve the problems of low efficiency and shallow 3D radar detection,such as high and low frequency transmitting antennas need to be replaced repeatedly in the detection of ground penetrating radar,a new high resolution method is proposed,deep data high signal-to-noise ratio of large-depth,refined dual-frequency antenna ground penetrating radar technology.By using GPRMAX software platform,the common underground cavity,void,loose and water-rich diseases were simulated and the simulated characteristic maps of common underground diseases were obtained,it provides a reference for the interpretation and interpretation of the actual disease.Based on a case study of a City Road Survey in Changsha,the radar profiles detected by high-frequency and low-frequency antennas are compared and analyzed,low-frequency data detection depth,high signal-to-noise ratio.This technology can realize the transformation of road disease detection to high efficiency,fine and large depth,and provide technical support for the rapid,fine and large depth survey of urban road underground disease.

关 键 词：双频天线探地雷达 地下病害体 正演模拟 探测深度 探测精度 

分 类 号：U418[交通运输工程—道路与铁道工程]