探地雷达在隧洞衬砌质量检测中的应用

探地雷达(G round Penetrating R adar)技术是一种高分辨率的地球物理探测技术,也是近几年在工程物探领域比较热的一项新技术,已广泛应用于水电工程勘察与工程检测中。由于雷达检测具有无损、高效快捷、高分辨率等特征而被广泛应用于混凝土质量检测方面。文章以某水电站深孔泄洪洞混凝土衬砌质量检测为例,介绍探地雷达在隧洞混凝土衬砌体内存在空洞及不密实等缺陷的探测中的应用。

Ground penetrating radar applied in the detection of tunnel lining

The ground penetrating radar is a sort of geophysical detecting technique with high resolution,and is a new mature technique used in the field of engineering geophysics in recent years,which has been widely applied to the investigation and engineering detection in hydropower projects. Thanks to its nondestructive,high-efficient,quick and high resolution,it is used in a wide range of concrete quality detection.Taking concrete quality detection of bottom outlet for a certain project as example,the paper expounds the application of ground penetrating radar to detect existing cavities and non-dense defects within concrete lining of tunnel.