探地雷达在中梁山隧道超前地质预报中的应用

The Application of Ground Penetrating Radar to Advanced Geological Prediction in Zhongliangshan Tunnel

在隧道施工中,隧道周围及掌子面前方的工程地质和水文地质情况与施工的质量和安全关系密切。探地雷达是利用高频宽频带电磁波来探测地下介质分布规律的一种地球物理方法。探地雷达由于其具有精度高、高效快速、操作简便、非破坏性等特点,适用于隧道超前地质预报。通过实例对探地雷达扫描图像进行了具体的解译,现场跟踪隧道实际开挖情况,并对设计、预报成果和实际揭露资料进行对比,说明探地雷达是隧道施工中的一种较好的超前地质预报手段。

The engineering geological and hydrogeological conditions around the tunnel and in front of working face are significantly related to a tunnel construction both in quality and security. The ground penetrating radar （GPR） is a geophysical method using high-frequency wideband electromagnetic to detect the distribution of subterranean medium. Because of its high precision, high efficiency, Simple operation, nondestructive testing, GPR is applicable to advanced geological prediction in tunnel. The objective of this study was to examine that the ground penetrating radar is a better method of advanced geological prediction in tunnel construction, base on a comparison between the design and forecasting results and exposed actual conditions.