A method for real-time monitoring of rock bolt backing plate pressure in mine surrounding rock disasters

Abstract

The invention discloses a mine surrounding rock disaster rock bolt plate pressure real-time monitoring method and belongs to the technical field of safety detecting and monitoring of the mining industry and geotechnical engineering. The mine surrounding rock disaster rock bolt plate pressure real-time monitoring method is characterized in that a pressure monitoring unit is fixedly arranged on a rock bolt (6) in a sleeving mode, the pressure monitoring unit comprises a hollow hydraulic jack (9) and pressure transmitters, and the pressure transmitters are connected with a monitoring host (5); the method comprises the steps that firstly, the hollow hydraulic jack (9) is installed; secondly, pressure values monitored by the pressure transmitters are sent to the monitoring host (5); thirdly, the monitoring host (5) judges the pressure values monitored by the pressure transmitters; fourthly, the monitoring host (5) judges the number of the pressure transmitters with the pressure values exceeding a threshold value according to the pressure values monitored by all the pressure transmitters; fifthly, the surrounding rock disaster range is determined and alarm information is issued. The method can be realized through an underground rock bolting system, cost is greatly reduced, and the method is easy to realize and popularize.

Description

technical field [0001] The invention discloses a method for real-time monitoring of the pressure of a bolt backing plate for mine surrounding rock disasters, and belongs to the technical field of safety detection and monitoring of mining and geotechnical engineering. Background technique [0002] There are dangers such as surrounding rock slabs, roof caving, water inrush and rockburst dynamic disasters in the underground of the mine, which pose a direct threat to the staff and equipment, affect the progress of the project, and cause support failure and even earthquakes. With the continuous increase of mining depth, the frequency and intensity of surrounding rock damage are getting higher and higher, engineering disasters are becoming more and more serious, and safety issues need to be solved urgently. [0003] To ensure safety, advance prevention and early warning must be carried out for the occurrence of the above problems, and monitoring and monitoring of the surrounding r...

AI Technical Summary

Problems solved by technology

At present, the surrounding rock monitoring mainly includes surrounding rock deformation monitoring, which can be subdivided into surface displacement monitoring, roof separation layer and loose range monitoring), roadway support load monitoring, stress monitoring of roadway surrounding rock, and real-time dynamic monitoring developed for the above monitoring. Instruments and equipment such as roof dynamic monitoring system, roof online monitoring system, etc. Some of the above monitoring have unsatisfactory early warning effects, some monitoring costs are high, and some cannot realize all-round real-time monitoring

For the acoustic emission monitoring of surrounding rocks, the installation and monitoring process is relatively cumbersome and expensive, and the requirements for the quality of the entire installation are also high. The later analysis of monitoring data is complicated and inconvenient, and the actual use effect is not ideal. For the surrounding rocks Ultrasonic monitoring, which can truly reflect the changes inside the surrounding rock, but it is not suitable for long-term monitoring, so it is necessary to explore new effective monitoring and early warning technologies

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