基于地基雷达监测隧道拱顶沉降的研究及应用

Research and Application of Tunnel Vault Settlement Monitoring Based on Ground-based Radar

目前我国正逐渐由交通大国向交通强国转变,为保证隧道开挖过程中的施工安全,隧道拱顶沉降监测是隧道施工必要的项目,文章提出一种基于地基雷达监测隧道拱顶沉降的方法,该方法针对传统的隧道位移监测仪器布设繁琐、精度低、效率低等问题做出了改善,实现由点检测到面监测,扩大了监测范围,且提高对各类观测场景进行微小形变位移信息的采集能力以及快速准确获取观测目标高精度的位移形变信息,所监测的参数包括隧道顶板的沉降位移、沉降速度、沉降范围等。并在工程现场进行试验,试验结果与隧道真实情况相符合,地基雷达监测技术在隧道拱顶沉降监测方面有很大的前景。

At present,China is gradually transforming from a large transportation country to a strong transportation country.In order to ensure the construction safety during the excavation of tunnels,tunnel vault settlement monitoring is a necessary project for tunnel construction.This paper proposes a method based on ground-based radar to monitor the settlement of tunnel vaults,which improves the traditional tunnel displacement monitoring instrumentation for the cumbersome deployment of low precision,low efficiency,realizes the monitoring scope of the tunnel vaults from the point of detection to the surface,and expands the monitoring range.The method expands the monitoring range and improves the ability to collect small deformation and displacement information for various observation scenarios as well as quickly and accurately obtaining high-precision displacement and deformation information of the observation targets,and the monitored parameters include the settlement displacement,settlement speed,and settlement range of the tunnel roof plate.The test results are consistent with the real situation of the tunnel,and the ground-based radar monitoring technology has a great prospect in monitoring the settlement of the tunnel roof.