A roadway mine pressure monitoring and early warning method

A technology for monitoring and early warning and mine pressure, applied in mining equipment, earth-moving mining, mining equipment, etc., can solve the problem that the reliability of early warning of roadway roof fall is not ideal, cannot understand the situation of roof separation, and can not better understand the appearance of roadway mine pressure. situation, etc., to achieve the effect of improving reliability

Active Publication Date: 2020-06-23
HENAN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the monitoring and early warning of roadway mine pressure are mainly through two methods of monitoring the roof separation layer or the force monitoring of the anchor bolt and cable, but the roof separation monitoring alone cannot specifically understand the support of the anchor rod and the anchor cable In addition, monitoring the force of anchor rods and cables alone cannot understand the situation of roof separation. Both of them are not ideal for the reliability of roadway roof fall warning, and they cannot better understand the mine pressure in roadways.

Method used

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  • A roadway mine pressure monitoring and early warning method
  • A roadway mine pressure monitoring and early warning method
  • A roadway mine pressure monitoring and early warning method

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Experimental program
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Effect test

Embodiment 1

[0023] Such as figure 1 As shown in -3, a roadway mine pressure monitoring and early warning method, at the same time, real-time monitoring of the force of the roadway roof bolt and anchor cable and the separation layer value of the roadway roof is carried out. By combining the two data for analysis, the two data Multiple related index calculations to identify hidden dangers of roof fall and evaluate the level of hidden dangers of roof fall; specifically, when the monitoring data meets any of the following conditions, an alarm will be issued:

[0024] (1) When the force of the bolt or cable on the roof of the roadway is higher than that of the anchor or cable at the same support section or greater than 80% or less than 20% of the breaking force of the anchor or cable, an alarm will be given, and the other The discrimination method is shown in the following formula:

[0025] or or P m max

[0026] In the formula, P m is the stress on the anchor rod or anchor cable when ...

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Abstract

The invention discloses a roadway mine ground pressure monitoring and early warning method. Two items of data of the stress of a bolt cable of a roadway roof and a separation layer value of the roadway roof are monitored in real time, analysis is conducted by combining the two items of data, arithmetic of a plurality of related indexes of the two items of data is conducted to identify hidden danger of a roof fall roadway, and the hidden danger grade of the roadway roof fall is evaluated. By effectively combining roof separation layer monitoring with bolt cable stress monitoring, roadway mine ground pressure monitoring and early warning are conducted, the reliability of roadway roof fall early warning is greatly improved, and more accurate and more concrete data can be provided for a roadway supporting and protecting design and roadway parameter optimization.

Description

technical field [0001] The invention belongs to the technical field of mine roadway early warning, and in particular relates to a roadway mine pressure monitoring and early warning method. Background technique [0002] In recent years, my country's mining industry has developed rapidly, and the level of mechanization and management has gradually improved. However, mine safety issues have not been solved well. Among them, roadway roof fall accidents account for a high proportion. Therefore, early warning and monitoring of roadway roof fall It is very important to monitor the occurrence of roadway mine pressure. At present, the monitoring and early warning of the mine pressure in the roadway are mainly through the monitoring of the roof separation layer or the force monitoring of the bolt and anchor cable, but the roof separation layer monitoring alone cannot specifically understand the support of the anchor rod and the anchor cable state, and monitoring the force of the bolt ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/18
CPCE21F17/185
Inventor 刘少伟付孟雄康延雷贾后省候宪金马煜于耀华谢凯王璐瑶贺德印
Owner HENAN POLYTECHNIC UNIV
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