In order to solve the problems of low measuring efficiency,low degree of visualization and automation,poor real-time performance of the traditional tunnel deformation monitoring methods,on the basis of expounding the principle of fiber grating sensing and hybrid solid-state 3D LiDAR scanning,the overall structure of the tunnel safety integrated monitoring system based on the combination of fiber grating sensing technology and hybrid solid-state 3D LiDAR scanning technology is proposed,and the equipment configuration and working principle are analyzed.Taking the actual data of a railway operation tunnel in Yunnan province for one month as an example,the monitoring data of the tunnel safety integrated monitoring system are analyzed,and the results show that:The visual 3D point cloud data obtained by hybrid solid-state 3D LiDAR scanner can fully display the tunnel holographic deformation;Fiber Bragg Grating(FBG)sensor can be used to dynamically monitor the displacement change of the tunnel section in real time.Through the"point-surface combination"of the above two monitoring methods,after comprehensive analysis,it is be-lieved that the tunnel structure is safe and stable in this time period.The research results have important reference value and practical significance for improving the intelligence and accuracy of tunnel deformation monitoring.
Tunnel Deformation MonitoringMonitoring SystemFiber Grating SensingHybrid Solid-state 3D Li-DAR Scanning
万方数据
维普
