摘要
介绍了车载探地雷达的检测原理及路基病害在雷达图像上的时域特征。根据探地雷达图像波形、幅度、频率、相位和电磁波能量吸收的变化规律,建立了四种铁路路基病害与探地雷达时域特征图像的对应关系,可作为探地雷达图像判读的依据。路基病害特征提取和目标快速识别在铁路路基维护与科学管理方面起到重要作用。
The detection principle of ground penetrating radar and the time-domain characteristics of subgrade defects in radar images were introduced in this paper.The corresponding relationship between the four kinds of railway subgrade defects and the time-domain characteristic images of GPR was established.According to the change rules of waveform,amplitude,frequency,phase and energy absorption of electromagnetic wave of GPR images,it can be used as the basis for interpretation of GPR images.Subgrade defect feature extraction and rapid target recognition played an important role in the maintenance and scientific management of railway subgrade.
作者
刘欢
李晋平
王伟
LIU Huan;LI Jinping;WANG Wei(China Academy of Railway Sciences Corporation Limited,Beijing Tieke Engineering Inspection Co.Ltd.,Beijing 100081,China;School of Geophysics and Information Technology,China University of Geosciences(Beijing),Beijing 100083,China)
出处
《铁道建筑》
北大核心
2021年第3期65-68,共4页
Railway Engineering
基金
中国铁道科学研究院集团有限公司基金(2019YJ183)。
关键词
铁路路基
路基病害成因
现场测试
车载GPR
图像特征
railway subgrade
causes of subgrade defects
field test
on-board GPR
image characteristics
