长江科学院院报2017，Vol.34Issue(8)：36-40,63,6.DOI:10.11988/ckyyb.20170022
探地雷达的常见干扰和不良地质体的超前预报在隧道工程中的应用
Common Interferences of Ground Penetrating Radar and Advanced Prediction of Bad Geological Bodies in Tunnel Engineering
岳全贵 1张杨 2肖国强 2周黎明2
作者信息
- 1. 中交第二公路勘察设计研究院有限公司武汉中交岩土工程有限责任公司,武汉430056
- 2. 长江科学院水利部岩土力学与工程重点实验室,武汉430010
- 折叠
摘要
Abstract
In order to apply ground penetrating radar(GPR) to accurate advanced geological prediction in tunnel engineering,we discussed the causes of common interferences and their influences on data interpretation,and determined the reflected interference information in profile of GPR image.Then,we gave examples of the antenna coupling and metal interferences and put forward precautions to avoid interference in the process of collecting GPR data.On the basis of three examples,we introduced the prediction of bad geological bodies such as karst cave,fault fissure water,and weak interlayer.Through analyzing typical characteristics of waveform,frequency and amplitude of the profile,we predicted the type of bad geological body as well as the spatial distribution characteristics like location and structure strike ahead of the working face of the tunnel.The prediction results are basically consistent with the distribution of bad geological bodies revealed by excavation,which proves that GPR is feasible and effective in the prediction of common bad geological bodies.By summarizing and analyzing the common radar interference images and the profiles of GPR images of typical geological bodies,we can provide references of interpreting complex geological bodies more precisely for geophysical workers and ensure the safety of tunnel construction.关键词
隧道超前预报/探地雷达/干扰因素/典型不良地质体/雷达干扰图像特征Key words
advanced tunnel geological prediction/ground penetrating radar (GPR)/interference factor/typical bad geological body/interfered radar image features分类
天文与地球科学引用本文复制引用
岳全贵,张杨,肖国强,周黎明..探地雷达的常见干扰和不良地质体的超前预报在隧道工程中的应用[J].长江科学院院报,2017,34(8):36-40,63,6.
