地质雷达作为一种新的探测方法, 在城市管线探测过程中应用越来越广泛。介绍了地质雷达的工作原理和方法。结合RAMAC型地质雷达在上海市管线普查中的实际应用可知, RAMAC型地质雷达可有效探测出地下非金属管线(如给水管道和燃气管道)、综合管沟和近间距管线的埋藏位置及尺寸, 具有快速、高效和非破坏检测的优势, 较传统地质雷达操作简便、数据处理快捷以及图像分辨率高。若该型地质雷达与管线探测仪结合使用, 可以解决城市管网普查中的大部分难点, 是值得推广的检测方法。

Being a new detection technique, ground penetrating radar(GPR) was widely used in civil pipeline detecting process. The theory and technique of GPR were introduced. Based on the application of RAMAC type GPR in pipeline detection at Shanghai, it showed the effectiveness of RAMAC for the location and size detection of non-metallic underground pipe(such as water supply pipes and gas pipes), integrated pipe and near-trench spacing pipes with fast, efficient, and nondestructive testing advantages. Compared to the traditional GPR, RAMAC GPR was superior on operation convenience, fast data processing and high image resolution. If RAMAC GPR was used combined with the pipeline detector, it would be able to solve most of the civil pipeline investigation difficulties and hence was worth while promoting.