Anchor rod anchoring force monitoring and analyzing system and method based on mechanochromism

Abstract

The invention discloses an anchor rod anchoring force monitoring and analyzing system and method based on mechanochromism. The system comprises annular films made of organic mechanochromism materials, the three annular films are coaxially attached to a surface of the spherical crown-shaped part of a tray; the acquisition and analysis terminal comprises a shell, a detection light emitting module, a color acquisition module, an analysis and processing module and a display module, and the detection light emitting module, the color acquisition module and the analysis and processing module are all mounted in the internal space of the shell. The method comprises steps that three circles of annular thin films are coaxially attached to the spherical crown-shaped part of each tray, and then engineering field application is carried out; the handheld acquisition and analysis terminal is aligned with the annular thin film to collect color signals; the analysis processing module processes the data and displays the data through the display module, and carries out system integration analysis. According to the system and the method, a bearing state of each anchor rod can be effectively and accurately monitored, and anchor rod supporting efficiency and the roadway surrounding rock deformation control condition can be comprehensively known and recognized.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering or shaft support engineering, in particular to a mechanochromic-based monitoring and analysis system and method for anchorage force of bolts. Background technique [0002] Prestressed bolt support technology has been widely used at home and abroad because of its many advantages such as effective control of surrounding rock deformation and effective reduction of roadway support costs. When the rock mass within the range of action of the bolt is deformed, the working resistance (axial force) of the bolt will increase to suppress the deformation of the rock mass. Therefore, the real-time working resistance of the bolt reflects the real-time bearing state of the bolt and also reflects The control effect of the bolt on the deformation of the rock mass. However, during on-site construction, due to various factors, many anchors did not exhibit good bearing performance (low working resis...

AI Technical Summary

Problems solved by technology

However, the monitoring cost of this type of method is relatively high, and the installation and operation process is relatively complicated. Due to factors such as high cost and complicated installation and monitoring processes, installing pressure pillows and digital display dynamometers on every part of the roadway surrounding rock not realistic on a single anchor

Therefore, it is difficult for such methods to monitor and judge the load-bearing state of each bolt, and it is impossible to comprehensively understand and recognize the performance of bolt support and the deformation control of the roadway surrounding rock.

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