A method and device for real-time safety monitoring of mine ventilation system

Abstract

The invention provides a mine ventilation system real-time safety monitoring method. The method includes the following steps that: the vortex frequencies of a mine ventilation system at each time point measured by an ultrasonic wind speed sensor are obtained, wind speeds at each time point are calculated through using the Kaman vortex street principle; the area of the section of the flow opening of the mine ventilation system is determined, ventilation flow rates at each time point are obtained according to the area of the section of the flow opening and the wind speeds at each time point, and the mean value and standard deviation of the ventilation flow rates are calculated; the safety range of the ventilation flow rates is determined, actually measured reliability is obtained according to the safety range of the ventilation flow rates as well as the mean value and standard deviation of the ventilation flow rates; a theoretical reliability range is obtained by using a preset composite Simpson formula according to the safety range of the ventilation flow rates; whether the actually measured reliability is within the theoretical reliability range is judged; if the actually measured reliability is within the theoretical reliability range, the mine ventilation system is safe; and if the actually measured reliability is not within the theoretical reliability range, a fault exists, and alarm information is outputted. With the mine ventilation system real-time safety monitoring method of the present invention adopted, the reliability of the mine ventilation system can be monitored periodically and quantitatively, and the safe and reliable operation of a mine can be ensured.

Description

technical field [0001] The invention relates to the technical field of mine safety detection, in particular to a method and device for real-time safety monitoring of a mine ventilation system. Background technique [0002] The mine ventilation system is a large-scale and complex related system composed of several subsystems such as the ventilation network and the main ventilator and its units. It provides sufficient fresh air volume for each wind site in the mine, ensures good climate conditions in the working space, and dilutes or dilutes toxic and harmful air. Gas and mine dust etc. With the increase of the service life of the mine ventilation system, the ventilation equipment gradually shows signs of aging, and the network structure may also undergo dynamic changes, which will increase the possibility of failure of the system and its units, causing the ventilation system to decrease or lose its intended function, and even cause Catastrophic accidents have serious social ...

AI Technical Summary

Problems solved by technology

[0003] Due to the complex correlation attributes of the mine ventilation system, the mine ventilation system is multi-linked, random and non-linear, and is prone to random faults or accident hazards

However, at present, the detection of mine ventilation systems generally adopts mechanical and manual methods. Although some hidden dangers can be eliminated, it is impossible to judge and detect the operation and stability of the ventilation system in a real-time, safe, reliable and quantitative manner.

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