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随着公路事业的发展,隧道工程在山区和丘陵地区公路建设中所占的比重越来越大,隧道工程质量安全问题愈来愈受到人们的重视。本文在简述探地雷达工作原理的基础上,详细讨论了探地雷达检测隧道质量时的数据采集方法、信号处理技术以及典型目标体雷达波组特征,分析了钢拱架在各种影响因素下的雷达波组特征,以及采用小波多尺度变换图像增强技术对雷达信号进行信噪分离,放大显示衬砌内部细节结构,识别衬砌内部的不密实区域、裂缝和钢筋等的雷达波组特征。
With the development of road projects, the proportion of tunnel construction in highway construction in mountainous areas and hilly areas has been growing. The quality and safety of tunnel projects have drawn more and more attention. Based on the principle of ground penetrating radar (GPR), this paper discusses in detail the data acquisition method, signal processing technology and radar target characteristic of GPR when it detects tunnel quality, and analyzes the influence of various factors And the features of radar wave group, and the signal-to-noise separation of radar signals by using wavelet multi-scale transformation image enhancement technology. The detail structure of the lining is enlarged and displayed, and the characteristics of the radar wave group such as the indentation area, the crack and the reinforcement inside the lining are identified.