市政道路典型病害的地质雷达特征回波

Geological radar characteristic echoes of typical diseases on municipal road

地质雷达法(GPR)是目前针对市政公路检测的重要方法之一。制作了层间脱空、材料不密实、反向裂缝、基层蜂窝、局部富含水、冻融等典型公路病害模型,将其埋置于对应位置,铺筑试验路。通过地质雷达测试,得到各类病害的相应特征图谱。根据电磁波传播理论,精确分析了市政道路典型病害雷达信号间的细节差异。为市政道路地质雷达法检测后期图谱的分析与辨识提高了效率和准确性。

Ground penetrating radar(GPR)is one of the most important methods for municipal highway detection.Typical highway disease models,such as interlayer void,incomplete material,reverse crack,base honeycomb,local water-rich,freeze-thaw and so on,were made and buried in corresponding positions to pave the test road.The characteristic atlas of various diseases were obtained by GPR test.According to the theory of electromagnetic wave propagation,the detailed differences of radar signals for typical diseases of municipal roads were analyzed accurately.It improves the efficiency and accuracy for the analysis and identification of the map of municipal road detection in the later period of GPR method.