摘要
越来越普遍的道路缺陷制约着新时代城市的发展。本文总结了三维探地雷达在道路缺陷勘测中的技术要点,对技术参数(包括中心工作频率、点距、时窗、采样率、叠加次数、天线间距、介质的电磁波速等)、分辨率、测线布设与测量、测试速度的选取进行了归纳,探讨了常见道路缺陷的雷达图像特征及识别方法。
The road defects are becoming more and more common, which restrict the development of cities in the new era. This paper summarizes the key points of 3 D GPR in road defect survey, and summarizes the technical parameters(including central working frequency, point distance, time window, sampling rate, overlap times, antenna spacing, electromagnetic wave velocity of medium, etc.), resolution, line layout and measurement, and the selection of test speed. The radar image characteristics and identification methods of common road defects are discussed.
作者
饶开永
贺锦美
Rao Kaiyong;He Jinmei(Nanjing Nanda Geotechnical Engineering Co.,Ltd.,Nanjing Jiangsu 210000,China;School of Earth Sciences and Engineering,Nanjing University,Nanjing Jiangsu 210093,China)
出处
《城市建筑》
2019年第24期158-161,共4页
Urbanism and Architecture
关键词
三维探地雷达
城市道路
地基
勘察
缺陷
3D ground penetrating radar
urban roads
the foundation
detection
defects
