利用探地雷达探测地下空洞

Application of ground penetrating radar in investigation on subterranean cavitation

简要介绍了探地雷达工作原理及其探测地下空洞的方法技术,以广州某地基勘察中地下空洞的检测为例,分析了地下空洞的雷达波组特征,总结了探地雷达时深剖面图的异常特征。指出该方法具有速度快、探测精度高、可获得连续结果等特点。经开挖验证,探地雷达异常特征与地下空洞实际位置相吻合。

The authors briefly introduced the operating principle of GPR and its method and technique for investigating the subterranean cavitation, with some subterranean cavitation inspection of groundwork exploration in Guangzhou as an example, analyzed the radar wave group characteristics of subterranean cavitation, and summarized the anomaly characteristics of the time-depth sections of the GPR. The method has the characteristics such as high speed and precision as well as available sequential results. The excavation verifies that the anomaly characteristics of the GPR accord with true position of the subterranean cavitation.