Monitoring and early warning device and method for stability of roadway roof

Abstract

The invention relates to a monitoring and early warning device and method for the stability of a roadway roof. The monitoring and early warning device is characterized in that the device comprises a supporting mechanism, a real-time monitoring assembly arranged on the supporting mechanism, and an automatic control system; the supporting mechanism comprises a base and a lifting rod assembly; the real-time monitoring assembly comprises a U-shaped groove, a limiting plate, a pressure measuring plate, a guide column, a push plate, a guide rod, a sliding rod, a spring I, a spring II and a real-time monitoring unit composed of a pressure sensor, a wireless radio frequency tag, an alarm and a laser ranging module; and the automatic control system comprises a central processing module, an information storage module, a data comparison unit, a statistical analysis module, a real-time monitoring unit, an alarm unit and a display unit. The device has the advantages as follows: (1) the device integrates a supporting function and a monitoring function; and (2) the device can simultaneously monitor the pressure difference value and the settlement difference value change of a roadway roof in unit time on line, judge the stability of the roadway roof in real time, and perform early warning in time.

Description

technical field [0001] The invention belongs to the technical field of roadway roof monitoring, and in particular relates to a monitoring and early warning device and method for the stability of the roadway roof. Background technique [0002] In the process of mining, with the gradual increase of mining depth, the compressive stress of the ground stress on the roof of the roadway is increasing, which greatly affects the stability of the roof of the roadway. In various accidents in mining production , Roof accidents are still in the forefront. The reason why the frequency of roof disaster accidents is high and the total number of accidents is large is that there are currently no suitable measures to accurately prevent the occurrence of roof accidents. Real-time monitoring of stability is particularly important. [0003] At present, at home and abroad, most of the measurement of the displacement of the roadway roof adopts manual measurement and recording, and manual measurem...

AI Technical Summary

Problems solved by technology

[0003] At present, the measurement of the displacement of the roadway roof at home and abroad mostly adopts manual measurement and recording, and manual measurement will have certain errors due to the conditions of the instrument and the observer's own conditions.

In addition, manual readings need to be recorded and then input into the computer for data processing, so errors are more likely to occur

This method not only consumes a lot of manpower and material resources, but the accuracy of the measurement results is relatively low, and it cannot be synchronized to the ground control center in time for analysis and timely warning of danger; even the new roadway monitoring equipment can monitor the roadway roof in real time The system that alarms the pressure and settlement value is relatively rare, and its function is relatively single. It can only monitor the pressure value or settlement value of the roof of the roadway, and it cannot give early warning in time, which affects the stability of the roof of the roadway. Judgment of gender, also has the problem of potential safety hazard

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