基于GprMax的道路路基空洞病害探地雷达正演模拟研究
The Forward Modeling Study of Road Subgrade Cavities Using Ground Penetrating Radar Based on GprMax
DOI: 10.12677/mos.2025.147517, PDF,   
作者: 赵永顺：重庆交通大学土木工程学院，重庆
关键词: 探地雷达；正演模拟；GprMax；路基病害；空洞；Ground Penetrating Radar； Forward Modeling； GprMax； Subgrade Defects； Cavities
摘要: 近年来，中国公路建设迅速发展，但由路基病害引发的塌陷事故亦频繁发生。探地雷达(Ground Penetrating Radar, GPR)作为一种高效、精确且无损的探测技术，已在道路隐患检测中得到广泛应用。为快速掌握道路内部空洞病害在探地雷达下的电磁响应特征，提升空洞检测的准确性与技术指导水平。本文采用基于时域有限差分法(Finite-Difference Time-Domain, FDTD)的GprMax软件，针对不同形状、不同填充物、不同尺寸及不同激励源中心频率条件下的道路空洞进行正演模拟。通过分析生成的B-scan雷达剖面图，系统研究各类空洞病害的雷达波场响应特征，为实际道路GPR探测中的数据分析与解译提供理论依据与技术支持。
Abstract: In recent years, China’s highway construction has developed rapidly, but collapse accidents caused by subgrade defects have also occurred frequently. Ground Penetrating Radar (GPR), as an efficient, precise, and non-destructive detection technology, has been widely used in the detection of hidden road hazards. To quickly understand the electromagnetic response characteristics of subgrade cavities under GPR and improve the accuracy and technical guidance of cavity detection, this study employs GprMax software based on the Finite-Difference Time-Domain (FDTD) method to perform forward modeling of road cavities under various conditions—including different shapes, fillings, sizes, and center frequencies of excitation sources. By analyzing the generated B-scan radar profiles, the radar wavefield response characteristics of various cavity defects are systematically studied, providing theoretical foundations and technical support for data analysis and interpretation in practical GPR surveys of road infrastructure.
文章引用：赵永顺. 基于GprMax的道路路基空洞病害探地雷达正演模拟研究[J]. 建模与仿真, 2025, 14(7): 70-83. https://doi.org/10.12677/mos.2025.147517

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