| 围垦堤防探地雷达法检测仿真分析与应用* |
| |
| 引用本文： | 路维,杨建功,邵丽,王金安.围垦堤防探地雷达法检测仿真分析与应用*[J].中国安全生产科学技术,2022,18(4):191-198. |
| |
| 作者姓名： | 路维 杨建功 邵丽 王金安 |
| |
| 作者单位： | （1.北京科技大学天津学院，天津 301830；2.北京科技大学 土木与资源工程学院，北京 100083） |
| |
| 基金项目： | * 基金项目: 国家重点研发计划项目(2017YFC1503104) |
| |
| 摘 要： | 为精准判断围垦堤防架空隐患的位置和范围，结合探地雷达检测技术的优点，基于时域有限差分法（FDTD），对探地雷达电磁波的传播特征进行数值模拟分析。主要研究时域有限差分法的差分形式、二维空间内的时域差分方程、数值稳定性及吸收边界条件的设定等问题。对围垦堤防可能存在的几种隐患形式进行正演模拟，通过分析雷达电磁波幅值变化，讨论其相应的剖面图像特征，并通过开展室内模拟试验和现场检测工作研究对正演模拟结论进行验证。研究结果表明:正演模拟可实现探地雷达典型形状目标的识别，为提高现场检测图像解释的精度和准确性提供理论参考。
|
| 关 键 词： | 围垦堤防 探地雷达 正演模拟 |
Simulation analysis and application of ground penetrating radar in reclaimed embankment detection |
| |
| LU Wei,YANG Jiangong,SHAO Li,WANG Jin’an.Simulation analysis and application of ground penetrating radar in reclaimed embankment detection[J].Journal of Safety Science and Technology,2022,18(4):191-198. |
| |
| Authors: | LU Wei YANG Jiangong SHAO Li WANG Jin’an |
| |
| Affiliation: | (1.Tianjin College,University of Science and Technology Beijing,Tianjin 301830,China;2.School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China) |
| |
| Abstract: | In order to accurately determine the location and scope of the hidden danger of overhead in the reclaimed embankment,combined with the advantages of the ground penetrating radar (GPR) detection technology,the propagation characteristics of the electromagnetic wave of GPR were numerically simulated based on the finite-difference time-domain method (FDTD).The difference form of FDTD,the time-domain difference equation in two-dimensional space,the numerical stability and the setting of absorption boundary conditions were mainly studied.Several possible hidden dangers of reclaimed embankment were simulated by forward modeling.Through analyzing the change in the amplitude of radar electromagnetic wave,the corresponding profile image characteristics were discussed,and the results of forward modeling were verified by laboratory simulation tests and field testing.The results showed that the forward modeling could realize the recognition of typical shape targets of GPR,and provide theoretical reference for the precision and accuracy of image interpretation in field detection. |
| |
| Keywords: | reclaimed embankment ground penetrating radar forward modeling |
|
| 点击此处可从《中国安全生产科学技术》浏览原始摘要信息 |
|
点击此处可从《中国安全生产科学技术》下载全文 |
