隧道衬砌空洞探地雷达GPR信号特征研究  

Study on GPR Signal Characteristics of Ground Penetrating Radar of Tunnel Lining Cavity

作　　者：于江峰 Yu Jiangfeng(Third Engineering Limited,China Railway 18th Bureau Group Corporation Limited,Zhuozhou O72750,China)

机构地区：[1]中铁十八局集团第三工程有限公司,河北涿州072750

出　　处：《市政技术》2025年第2期182-189,共8页Journal of Municipal Technology

基　　金：中铁十八局集团有限公司2022年度科研创新项目(C2022-051);中国铁建股份有限公司2022年度科技研究开发计划及资助课题(2022-C1)。

摘　　要：为了评估隧道衬砌及其背面空洞状况,探地雷达(GPR)作为无损检测的常用工具得到了广泛应用,借助gprMax软件对隧道衬砌模型试件在探地雷达作用下的信号特征进行了可视化分析,并将数值模拟结果与GPR试验结果进行了对比验证分析。分析结果表明,采用探地雷达技术能够准确模拟隧道衬砌、内部空洞等介质变化对电磁波信号传播的影响,确保了模型试验的科学性与准确性,为开发GPR分析技术提供了必要的数据支持,以准确评估隧道衬砌厚度和防水膜的影响等。Ground penetrating radar(GPR)has been widely used as a non-destructive testing tool in order to evalu-ate the condition of tunnel lining and cavity on its back.In this paper,the signal characteristics of tunnel lining model specimens under the action of ground penetrating radar was visually analyzed by gprMax software.The numer-ical simulation results were compared with the GPR test results.The analysis results show that GPR technology can accurately simulate the influence of medium changes such as tunnel lining and internal cavity on electromagnetic wave signal propagation to ensure the scientific and accurate of the model test,and provide necessary data for the development of GPR analysis technology to accurately evaluate the influence of tunnel lining thickness and waterproof film.

关 键 词：隧道 衬砌空洞 探地雷达 数值模拟分析 

分 类 号：U231.4[交通运输工程—道路与铁道工程]