高速地质雷达在公路隧道衬砌质量检测中的应用

Application of High-speed Ground Penetrating Radar in Detecting Quality of Concrete Lining in Highway Tunnel

隧道衬砌后，受诸多因素的影响，衬砌混凝土可能出现厚度未达到设计要求或脱空等质量问题。为了及时发现隧道衬砌质量问题，需对隧道的衬砌质量进行快速和高分辨率的检测，为隧道工程的科学管理提供依据。在隧道质量检测中，最常用的无损检测方法就是探地雷达方法。它能快速、无损、连续检测，并以实时成像方式显示地下结构剖面，使探测结果分析直观方便，而且探测精度高、样点密、工作效率高，已被广泛应用于工程地质勘察、建筑结构调查、无损检测、水文地质调查、

In tunnel detection,the most commonly used nondestructive testing method is ground penetrating radar.This paper discusses the choosing principle of testing antenna,dielectric constant and environmental conductivity and so on,which are important parameters to this technology.Then this technology is successfully applied in Ninghuai highway.It can provide an effective support and judgment to builders in controlling quality of concrete and eliminating the incipient fault of project quality.