地质雷达在隧道工程检测中的应用

随着交通事业的不断发展,隧道数量逐年增加,运营中出现的病害也屡见不鲜,但隧道建成以后用常规方法很难对衬砌质量作出系统评价。地质雷达利用高频电磁脉冲波探测目标介质的介电常数,能够快速准确地掌握衬砌结构的厚度、衬砌裂隙及背后空洞等情况。阐述了地质雷达法的基本原理和方法,介绍了这一隧道衬砌质量检测新技术在工程实例中的应用,并通过几幅典型雷达图像分析了不同异常情况在雷达图像上的反映。

Application of Ground Probing Radar in Tunnel Engineering Detection

With the great development of traffic,the quantity of tunnel increases year after year,and the diseases during their operation are also becoming more and more.But it is hard to make a systematic estimation of lining quality by the use of routine methods after the tunnel is built.The ground probing radar detects the target medium's inductivity through high frequency pulsed electromagnetic wave,and determine the liner thickness,crannied status and voidage behind liner etc.to give a quick and accurate conclusion.The fundamental principles and methods for its application are explained,the application of new technique for quality detection is introduced through an engineering example,the different anomalous conditions' representation on radar profiles are analyzed with some typical radar images.