探地雷达探测地下管线的地基病害

文章在探地雷达理论的基础上,结合工程实例,阐述了探地雷达在探测地下管线周围地基病害中的应用,通过对雷达测线剖面图和单道波形图进行图像分析,对典型的地基病害如土体疏松进行了图像解释,确定出地基病害的程度和空间位置,并采用现场开挖及静力触探对比验证探地雷达的探测结果;此外,还阐述了探地雷达应用于金属管线和非金属管线的识别,并归纳了它们在雷达图像的异同。实践证明了探地雷达技术是一种有效的地基病害快速探测方法,值得大力推广。

GPR for Detecting Underground Pipelines of Foundation Diseases

Some engineering examples of GPR survey for detecting underground pipelines of the foundation diseases were introduced.Image interpretation about disturbed soil and soil slab in foundation diseases was base on analyzing the profile of GPR survey-line and the image of single-waveform,Determine the degree and spatial position of foundation diseases.The static cone penetration test(SPT) and excavation is also used to compare the result of GPR.In addition,but also elaborated ground penetrating radar applied in metal pipeline and non-metal pipeline identification,and concludes their similarities and differences in radar image.Engineering practices prove that GPR is a high-efficiency technique for detecting the position of foundation diseases accurately and worth to be popularized energetically.