A method and device for real-time monitoring of tunnel deformation

Abstract

The invention discloses a method and device for real-time monitoring of tunnel deformation. The monitoring method includes: S1. Installing a plurality of structured light sources in an unstable area of ​​the tunnel structure that needs to be monitored, and installing a monitoring terminal in a relatively stable area of ​​the tunnel structure. The monitoring terminal can Communicate with multiple structured light sources; S2. The monitoring terminal observes all structured light in the unstable area of ​​the tunnel structure, and obtains the structured light curve in real time; S3. The data processing unit analyzes the imaging changes of the structured light, and detects the deformation degree and offset of the tunnel in real time To monitor tunnel single-section settlement, convergence, and multi-section overall settlement and other diseases. The invention can be applied to the tunnel under construction and the tunnel in operation, the monitoring points are dense, and the deformation of the tunnel can be monitored in real time.

Description

technical field [0001] The invention relates to the field of deformation monitoring of tunnel structures, in particular to a method and device for real-time monitoring of tunnel deformation. Background technique [0002] The excavation methods of tunnels under construction mainly include blasting and shield tunneling. The shield method is mainly used in the construction of subway tunnels. The cutterhead excavation, slag transportation, pipe patching, and track laying are carried out at the same time. The structure is relatively stable and the cost is high. The blasting method is mainly used in the construction of high-speed railway tunnels. First, blasting is carried out on the tunnel face. After the blasting, I-beams are erected and cement is poured to form the primary support area. The deformation rate in the primary branch area is relatively high, and disasters such as tunnel settlement and convergence are extremely prone to occur, so real-time monitoring of deformation ...

AI Technical Summary

Problems solved by technology

During tunnel excavation, it is necessary to manually install multiple reflective prisms (usually 3 to 7) at fixed intervals on the top of the tunnel. The installation of reflective prisms is inconvenient and poses certain construction safety hazards

During inspection, it is necessary to stop construction and use a total station for manual monitoring. The interval between each inspection is generally 2 to 4 hours. This inspection method is time-consuming and laborious, and delays the construction progress.

[0004] In addition, the above-mentioned current total station monitoring method can only monitor 3 to 7 points in each section of the tunnel, which is very sparse, and the time interval for monitoring deformation is relatively long. If a disaster accident occurs during the monitoring window period, it will not be able to effectively warn

[0005] For operational tunnels, motion detection vehicles are usually used to deploy structured light sources and image sensors on the detection vehicles, but this detection method cannot be used in tunnels under construction that use blasting methods, and the detection period is long and non-real-time detection

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