Automatic monitoring system of tunnel deformation

With the rapid development of infrastructure construction such as expressways, high-speed railways and subways in China, the mileage of completed and under construction tunnels has increased rapidly. Tunnels are concealed underground projects, and the geological environment is relatively complex. During the construction process, soil excavation, pile driving and other operations may lead to the deformation of tunnel structure. In addition, precipitation will also affect the tunnel structure and destroy the original stress balance of tunnel structure, It will cause the displacement of surrounding rock towards the vertical or horizontal direction, and then cause the deformation of tunnel structure. Therefore, in order to ensure the safety of tunnel engineering and timely predict dangerous situations, in addition to strengthening and maintaining the tunnel, it is also very important to monitor and evaluate the safety and stability of tunnel engineering.