Real-Time Georobot Automatic Monitoring During Shield Under-crossing Existing Tunnel

During under-crossing shield, the monitoring of the existing tunnel has been done by the improved Georobot automatic deformation monitoring system. Results show the iron rails of existing tunnel have some regular settlement, difference settlement and lateral deformation. The vertical and lateral compressive and tensile deformation also exist in the structure of the tunnel section. The automatic deformation monitoring system based on Georobot owns a series of advantages such as comprehensive deformation information acquisition, high-precision, easy-installation, reusable.