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阐述了地质雷达检测的工作原理,地质雷达作为一种高效、快速、无损的检测方法,在当前隧道建设过程中发挥着越来越重要的作用。通过长期检测过程分析,总结出地质雷达在检测隧道衬砌时三种常见缺陷典型雷达图像,为今后检测工作提供参考依据。结合FLAC3D数值模拟方法对隧道衬砌背后空洞及厚度不足进行分析,研究发现隧道施工过程中拱顶最易出现缺陷,针对隧道缺陷共分七种工况进行分析,得到了有益的参考数据,为隧道安全评估提供有力的理论依据。
The working principle of GPR detection is described. As an efficient, rapid and nondestructive detection method, GPR plays an increasingly important role in the current tunnel construction. Through the analysis of long-term detection process, the typical radar images of three kinds of common defects in the detection of tunnel linings by GPR are summarized, which can provide reference for the future detection. Combined with FLAC3D numerical simulation method to analyze the tunnel behind the hole and the thickness of inadequate analysis found that the most vulnerable to the construction of the tunnel during the construction of defects, tunnel defects are divided into seven operating conditions were analyzed and useful reference data obtained for the tunnel Security assessment provides a strong theoretical basis.