阵列地质雷达在黄河堤防隐患探测中的应用

Application of Array Geological Radar to the Detection of Hidden Dangers in the Yellow River Dyke

为快速高效探测及精细化评估堤防隐患,开展了车载式阵列地质雷达堤防隐患探测技术研究。介绍了含有8个雷达天线的大型车载式阵列地质雷达系统对大范围、长里程的河道堤防堤身疏松、富水、裂缝、空洞塌陷等隐患快速地毯式全覆盖普查探测技术,同时论述了疏松、富水、裂缝等堤坝隐患的雷达回波特征及隐患评估方法。目前该技术已在黄河郑州花园口河段右岸大堤进行了18.2 km的初步探测应用,实践证明该技术工作效率高、工作方式便捷、劳动强度低、不破坏原有堤防,对堤防隐患消除、加固具有科学的指导价值。

In order to detect and evaluate the hidden danger of embankment quickly and efficiently,in this paper,the composition of the vehicle mounted GPR system was analyzed,which was a large array with eight radar antennas.It was suitable for fast carpet full coverage general survey and detection of hidden dangers such as loose dike body,rich water,crack,cavity collapse and so on in largescale and large mileage river embankment.At the same time,the radar echo characteristics and hidden danger evaluation methods of dam hidden dangers such as loose,rich water and cracks were discussed.At present,18.2 km preliminary detection application has been carried out on the right bank dike of Huayuankou in Zhengzhou.The technology has high efficiency,convenient working mode and no damage to the dike.Four abnormal points of dike stratum hidden danger have been found in the detection.It is suggested to further confirm and deal with the hidden danger of stratum abnormal points.