地质雷达法探测确定围岩松动圈范围的探究

摘要

Determination of loosened rock circles around the tunnel plays an important role in tunnel engineering. This paper evaluates the feasibility of applying ground-penetrating radar (GPR) to determine loosened rock circles around the tunnel, based on GPR theory. During the experiment, Zhangjiajie Laomuyu 2 nd tunnel is probed by GPR (Model Number: TLD-2100). The radar waveforms and frequencies obtained are further analyzed by using IDSP6.0 system, and successfully determines the range of loosened rock circles around the tunnel. This alternative is proven to be reliable, which could provide additional support and guidance for tunnel excavation and protection.%围岩松动圈范围的确定在隧道工程中有很重要的作用.基于地质雷达探测原理, 分析了用地质雷达技术确定隧道围岩松动圈范围的可行性.利用TLD-2100地质雷达对张家界永定区老木峪二号隧道进行了实地探测, 通过IDSP6.0系统对雷达波形图的分析, 同时结合相应的雷达频谱图, 确定了该隧道围岩松动圈范围.为隧道围岩松动圈范围的确定提供了一种可靠方法, 同时对隧道的开挖、支护等提供技术支持与指导.