基于地质雷达技术隧道安全性评价研究

Evaluation of Tunnel Safety Based on Geological Radar Technology

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。

This paper mainly describes the working principle of geological radar detection which is an efficient, fast and non-destructive testing method and plays an increasingly important role in the process of tunnel construction at present. Through long-term analysis of detection process during the process of detecting the tunnel lining by using the geological radar, three common defects of the typical radar images were summed up, which would provide refer- ence for future detecting work. Besides, FLAC3D numerical simulation method was applied to analyze the cavity and insufficient thickness behind the tunnel lining with the final discovery that the vault is prone to give defects during the process of tunnel construction and at the same time, by analyzing seven working conditions of tunnel defects, useful reference data are obtained to provide strong theoretical foundation for assessing the tunnel safety.