Innovation of Tunnel Deformation Monitoring Technology

The deformation monitoring of tunnel is of great significance to the safety of tunnel construction and operation, the traditional monitoring methods are mainly buried in the tunnel wall, using total station, section meter, convergence meter and so on to monitor, but these methods are not only time-consuming and laborious, but more importantly, it is difficult to realize the overall, real-time and automatic monitoring of the tunnel.

Traditional tunnel monitoring methods

With the continuous improvement of the measurement accuracy of 3D laser scanner, its application scope is gradually extended to the field of deformation monitoring. The application of 3D laser scanner in subway tunnel detection has obvious advantages, which can be used as a non-contact measurement method to effectively reduce the intensity of manual work and greatly improve work efficiency. It can not only complete the collection of the original landform basic data, but also scan the tunnel in the construction or operation stage to obtain the high-precision point cloud model.

On the point cloud data, the cross-section data can be directly intercepted to check and analyze the quality and state of the tunnel project, and various data results can be provided, including three-dimensional model, cross-sectional diagram, central axis extraction, over-under-excavation analysis diagram, and truly reflect the initial state of the tunnel after penetration.