隧道超前地质预报的雷达数据处理及解译研究

Study on GPR Data Processing and Interpretation in Tunnel Advanced Geological Prediction

地质雷达作为隧道超前地质预报的重要方法之一,在隧道施工中已经得到了广泛的应用。该文针对回波信号的特点,提出了一套完整有效的雷达数据处理流程,并基于时域有限差分方法对基本地质体回波波形特征进行了研究,从而建立了雷达超前地质预报回波图像的解译流程和方法。实践证明,该文提出的方法可以有效地保障雷达超前地质预报数据的处理效果和解译精度,对于地质雷达在隧道超前地质预报工作中的应用具有重要意义。

As one of the important methods of tunnel advanced geological prediction, the GPR has been widely used in tunnel construction. In this paper, according to the characteristic of the echo signal, a set of complete and effective processing procedure of GPR data is put forward. Also, based on the FDTD method, the characteristics of the echo waveform of the basic geological body are studied, the process and method of the echo image interpretation about GDR are built. The practice proves that the method put for- ward in this paper can ensure the processing effect and interpretation accuracy of GPR advanced geolog- ical prediction data. It has important significance for the application of GPR in tunnel advanced geological prediction.