地质雷达在隧道塌方范围探测中的应用

Application of GPR in Detection of Tunnel Collapse Range

塌方是隧道开挖过程中,最常见、危害较大的工程地质问题之一。处理塌方,首先必须详细查清塌方的范围、形状、地质构造和地下水活动情况,经认真分析,然后制定处理方案。该文以福建某隧道出口塌方段为例,应用地质雷达对塌方体的规模、塌方体的分界面等进行探测,获得了较准确的探测结果,论证了地质雷达在塌方体探测中的可行性及其应用范围。

Tunnel collapse is one of the most common and dangerous engineering geological phenomenon. Before dealing with the tunnel collapse, there are some principal conditions including the range and shape of tunnel collapse, the geological structure and groundwater situation which should be found out, then through the carefully analysis, the scheme is carried out. Taken a tunnel in Fuzhou province for example, the GPR is used to detect the scale of tunnel collapse area and the interface of the collapse body ect , so the accurate detected resuts are obtained. By analyzing the detected results, the feasibility and application rang of GPR in detecting the tunnel collapse are concluded.