【摘要】 针对道路结构层厚度检测和评估问题,将地质雷达应用于道路检测工程中,开展了道路地质雷达现场测试,并将雷达检测结果与钻芯取样结果进行对比,分析了道路分界面的位置、各结构层的厚度以及存在的病害,对雷达原始数据进行希尔伯特变换,得到瞬时振幅图、瞬时相位图和瞬时频率图,重点分析了道路结构层分界面的位置。研究结果表明:地质雷达能够探测道路结构层的厚度,并且对道路的不均匀沉降也有较好的检测效果,通过数据的二次处理,提高了地质雷达图像解释的精确度和可信度。更多还原

【Abstract】 In this paper,the ground penetrating radar is applied to the road detection,and the field test is carried out. The radar test results are compared with the results of core sampling. The location of the interface,the thickness of structural layers,and the existing diseases are analyzed. The Hilbert transform of radar raw data is used to obtain instantaneous amplitude,instantaneous phase and instantaneous frequency,then,the interface position of the road structure layer is emphatically analyzed. The results show that the ground penetrating radar can detect the thickness and the uneven settlement of the road structure layer. The accuracy and credibility interpretation of the radar image are improved by secondary processing.更多还原