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为了无损定性分析公路工程中填土路基的含水量,针对土体介电常数对含水量的变化非常敏感,研究一种快速提取土体介电常数的方法。基于此思想,通过探地雷达数据,应用现代数学理论中的Hough变换方法,利用计算机Matlab语言编程,快速提取电磁波在介质中的传播速度获取土体介质的介电常数。将所提取的介电常数数据与实际试验测试数据相比较,基本一致。研究结果表明:基于Hough变换提取土体介电常数在无损获取介质介电常数方面是一种行之有效的方法,它可做为一种无损快速检测技术,推广应用于填土路基工程质量的评定。
In order to nondestructively qualitatively analyze the water content of road embankment in highway engineering, aiming at the change of soil water content is very sensitive to the change of soil water content, a method of rapid extraction of soil dielectric constant is studied. Based on this idea, we use Hough transform in modern mathematical theory and Matlab language to extract the permittivity of soil medium quickly through the penetrating velocity of electromagnetic wave. The extracted dielectric constant data compared with the actual test data, basically the same. The results show that the Hough transform method can be used as a nondestructive rapid detection technique to extract the dielectric constant of soil so as to improve the dielectric constant of the soil. assessment.