Coal and gas outburst warning method of coal mine heading face

A technology of excavation working face and gas outburst, applied in the field of sensors and communication, can solve the problems of high false alarm rate and false alarm rate, difficulty in meeting safety production in coal mines, etc.

Active Publication Date: 2015-04-08
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the existing coal and gas outburst real-time monitoring and forecasting methods (including microseismic, acoustic emission, electromagnetic radi

Method used

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  • Coal and gas outburst warning method of coal mine heading face
  • Coal and gas outburst warning method of coal mine heading face
  • Coal and gas outburst warning method of coal mine heading face

Examples

Experimental program
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Embodiment Construction

[0021] The alarm method requires the underground monitoring system to collect the signals of each sensor, and the monitoring server implements data analysis. figure 1 The underground monitoring system shown includes:

[0022] 1. Monitoring server (1); responsible for collecting and storing the sensor signals, and monitoring the methane concentration, wind direction, wind speed sensor data changes and sensor failures, and sending out alarms and power-off lockout signals by analyzing data changes and fault information to cut off All non-intrinsically safe electrical equipment power supplies underground in coal mines.

[0023] 2. Monitoring host (2); production management personnel can view sensor data changes and sensor failures through the monitoring host, and can manually send out alarms and power-off lock signals, cut off all non-intrinsically safe electrical equipment in the coal mine, and issue dispatch instructions to notify withdrawal Workers out of the coal mine underground. ...

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Abstract

The invention discloses a coal and gas outburst warning method of a coal mine heading face. The warning method comprises a reasonable sensor setting method, monitors the methane concentration, the wind direction, the data change of an air velocity transducer and the sensor faults in real time, analyzes the data change of the transducer and the sensor fault information in real time, and sends out coal and gas outburst warning and outage blocking signals if the combination condition of information abnormalities accords with the warning condition. The warning method fully considers various characteristics of the coal and gas outburst of the coal mine heading face, is simple in implementation, can judge the coal and gas outburst of the coal mine heading face more accurately, can effectively prevent such accidents as gas explosion caused by the coal and gas outburst, and can prevent or reduce the casualties caused by the gas asphyxia and the gas explosion.

Description

Technical field [0001] The invention relates to an alarm method for coal and gas outburst in a coal mine driving face, and the method relates to the fields of sensors, communications and the like. Background technique [0002] Coal is my country's main energy source, accounting for about 70% of primary energy. The coal industry is a high-risk industry, and accidents such as gas, floods, fires, roofs, coal dust, etc. plague coal mine safety production. Most of the major accidents in coal mines in my country are major gas accidents, and the number of casualties caused by gas accidents is also the largest proportion of all coal mine accidents. Therefore, the prevention of gas accidents is very important. [0003] Gas accidents include gas explosion, coal and gas outburst, gas suffocation, gas burning and other accidents. In order to avoid or reduce coal and gas outburst accidents, people have proposed a variety of coal or rock and gas outburst prevention methods, which play an impo...

Claims

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Application Information

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IPC IPC(8): E21F17/18
CPCE21F17/18
Inventor 孙继平刘毅
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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