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System and method for tunnel deformation monitoring

A deformation monitoring and tunneling technology, applied in signal transmission systems, measuring devices, instruments, etc., can solve the problems of low precision and high cost, and achieve the effects of high precision, low cost and improved work efficiency

Inactive Publication Date: 2013-05-08
BEIJING DIGSUR SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vertical displacement and horizontal displacement monitoring of the tunnel through geodetic survey or automatic measurement is costly and the accuracy is not high

Method used

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  • System and method for tunnel deformation monitoring
  • System and method for tunnel deformation monitoring
  • System and method for tunnel deformation monitoring

Examples

Experimental program
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Effect test

no. 1 example

[0052] Such as image 3 As shown, in order to monitor one-dimensional tunnel deformation, including vertical displacement monitoring (interval tunnel settlement monitoring and tunnel and underground station settlement difference monitoring) and horizontal displacement monitoring (interval tunnel horizontal displacement monitoring and tunnel relative underground station horizontal displacement monitoring), it can be monitored in A reflective prism is arranged at the feature point, and a rangefinder is installed at a stable known coordinate position in the vertical or horizontal direction of the reflective prism, and the vertical displacement or horizontal displacement of the tunnel is calculated by the length of the hypotenuse of the triangle.

no. 2 example

[0054] Such as Figure 4As shown, in order to monitor the deformation of the two-dimensional tunnel, reflective prisms can be arranged at the monitoring feature points, and two rangefinders are installed at the stable position of the two-dimensional tunnel space, that is, in the horizontal and vertical directions of the monitoring point. The exact coordinates of the distance meter are known, and the position of each monitoring point is obtained by calculating the side length of the triangle. By comparing the relevant data, the deformation value and rate of change of the two-dimensional displacement of the tunnel are obtained.

[0055] Such as Figure 5 As shown, in order to monitor the deformation of the three-dimensional tunnel, reflective prisms should be arranged at the monitoring feature points, generally in a relatively stable place outside the deformation zone or in the transverse hole of the tunnel. Range meter, multiple range finders are distributed in different direc...

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Abstract

The invention provides a system and a method for tunnel deformation monitoring. The system and the method for tunnel deformation monitoring comprise the following steps: distance meters and prisms with proper numbers and types are selected; positions are designated on a line needing measuring, and reflecting prisms are arranged on each monitoring point. According to dimensionality measured according to actual need, different numbers of distance meters are arranged on stable reference points with known coordinates, the reflecting prisms are measured in real time, and a plurality of formulas are composed by utilizing measurement formulas to solve the three-dimension space coordinates of each reflecting prism on the monitoring points. The monitoring frequencies of the distance meters are set through a computer operation system, and data obtained by the distance meters is accurately and timely transmitted to a software analysis system through a wireless transmission device. The software analysis system can calculate the deformation value and the change rate of the tunnel monitoring point at a certain time interval through the way that the software analysis system compares three-dimensional coordinates of different time intervals on a monitoring point of the reflecting prisms.

Description

technical field [0001] The invention relates to a tunnel deformation monitoring method and system, in particular to a three-dimensional deformation monitoring method and system based on precise distance intersection. Background technique [0002] Tunnel structure deformation monitoring is determined according to the tunnel structure design, national codes, deformation monitoring of similar projects, and the current stage of the tunnel. The main contents include: vertical displacement monitoring (interval tunnel settlement monitoring and tunnel and underground station settlement difference monitoring); horizontal displacement monitoring Monitoring (horizontal displacement monitoring of interval tunnels and horizontal displacement monitoring of tunnels relative to underground stations); monitoring of convergence deformation of tunnel sections, etc. [0003] For different tunnel structure deformation monitoring items, the monitoring methods used are also different. [0004] Us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16G08C17/02
Inventor 张向前杨伯钢
Owner BEIJING DIGSUR SCI & TECH
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