Tunnel multi-section measurement monitoring system and monitoring method

Abstract

The invention discloses a tunnel multi-section measurement monitoring system and monitoring method. The system comprises a series of markers, a machine vision measuring instrument, a cloud platform and a client. A series of markers are mounted on the cross section of each tunnel to be monitored, and the machine vision measuring instrument is mounted at a stable position where each marker can be observed; in an initial state, a client uploads the measured spacing distance between the sections and the initial coordinates of the markers on the sections to a cloud platform, and the cloud platform fits images of the sections of the tunnel in the initial state according to received data; in the monitoring state, the machine vision measuring instrument calculates the real-time coordinates of the markers and uploads the real-time coordinates to the cloud platform, the machine vision measuring instrument calculates the spacing distances between the sections of the tunnel according to the imaging law of the markers and uploads the spacing distances to the cloud platform, and the cloud platform fits out the images of the cross sections of the tunnel in the monitoring state according to the received data; and the client side can check the tunnel section images under the coordinates, the initial state and the monitoring state.

Description

technical field [0001] The invention relates to the technical field of tunnel multi-section measurement and monitoring, in particular to a tunnel multi-section measurement and monitoring system and monitoring method. Background technique [0002] In the process of tunnel construction and operation management, due to adverse geological conditions and other reasons, the tunnel is deformed under compression. In order to ensure safe construction and operation and provide decision-making information to relevant departments, deformation monitoring should be carried out in a timely and accurate manner. [0003] At present, the traditional methods commonly used in tunnel deformation monitoring are mainly concentrated in contact and non-contact methods. The basic idea of ​​the contact deformation monitoring method is to arrange multiple inclination sensors around the tunnel, obtain angle data through the sensors, and use the angle to calculate the horizontal and vertical direction of ...

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional methods commonly used in tunnel deformation monitoring are mainly concentrated in contact and non-contact methods. The basic idea of ​​the contact deformation monitoring method is to arrange multiple inclination sensors around the tunnel, obtain angle data through the sensors, and use the angle to calculate the horizontal and vertical direction of the tunnel. change data and analyze the deformation; commonly used tools are the Bassett convergence system and convergence ruler. This type of method directly acts on the tunnel to obtain the spatial position and deformation data of the tunnel simply and intuitively. However, due to the large amount of manpower involved, Long cycle and high cost

Total station measurement of tunnel deformation is a non-contact method commonly used in actual engineering. It mainly uses total station to carry out automatic dynamic monitoring of selected sections according to a certain step size. Total station belongs to the traditional single-point acquisition method. The selected monitoring points are subjective, which will cause the monitoring accuracy and monitoring cycle to fail to meet the requirements

The laser section scanner adopts laser ranging technology and precision angle measurement technology, and helps construction personnel quickly obtain the internal contour curve of the closed space through the polar coordinate measurement method. ① However, it lacks a certain inclination angle to flexibly adjust the structure. The measurement results are easily affected by the external inclination angle to cause errors, ② and the accuracy of the instrument centering is high, so the monitoring work can only be carried out during the non-operation period of the tunnel. For the subway tunnel, due to the short period of train stop operation, each The working time does not exceed 3 hours, but the number of measuring points is large, the alignment accuracy is difficult to guarantee, and the efficiency is low

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