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Coal and gas outburst alarming method of coal face

A coal mining face, gas outburst technology, applied in the field of sensors and communications, 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: 2015-03-11
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 radiation, infrared radiation, etc.) have a high false alarm rate and false negative rate, which is difficult to meet the needs of coal mine safety production

Method used

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  • Coal and gas outburst alarming method of coal face
  • Coal and gas outburst alarming method of coal face
  • Coal and gas outburst alarming method of coal face

Examples

Experimental program
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Embodiment Construction

[0022] The described alarm method needs to collect each sensor signal by the underground monitoring system, realize data analysis by the monitoring server, by such as figure 1 The downhole monitoring system shown includes:

[0023] 1. Monitoring server (1); responsible for collecting and storing the signals of each sensor, and monitoring the data changes and sensor failures of methane concentration, wind direction, and wind speed sensors, and sending out alarm and power-off locking signals by analyzing data changes and fault information, and cutting off Power supply for all non-intrinsically safe electrical equipment in underground coal mines.

[0024] 2. Monitoring host (2); production management personnel can check the data changes and sensor failures of sensors through the monitoring host, and can manually send out alarm and power-off locking signals, cut off the power supply of all non-intrinsically safe electrical equipment in the coal mine, and issue dispatch instruction...

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Abstract

The invention discloses a coal and gas outburst alarming method of a coal face. The alarming method includes a method for reasonably arranging sensors. The data changes of sensors and sensor fault information are analyzed in real time by monitoring the data changes of a methane concentration sensor, a wind direction sensor and a wind speed sensor and sensor faults, and if the combined situation of the information abnormality conforms to an alarming condition, a coal and gas outburst alarming and power-down blocking signal is transmitted. By adequately considering various characteristics of the coal and gas outburst of the coal face of a coal mine, the alarming method is simple to implement, the coal and gas outburst of the coal face can be accurately judged, accidents such as gas explosion caused by the coal and gas outburst can be effectively avoided, and the personnel injury and death caused by the gas suffocation and gas explosion can be avoided or reduced.

Description

technical field [0001] The invention relates to a coal and gas outburst alarm method in a coal mining face, and the method relates to the fields of sensors and communications. Background technique [0002] Coal is the main energy in my country, accounting for about 70% of the primary energy. The coal industry is a high-risk industry, and accidents such as gas, flood, fire, roof, and coal dust have plagued coal mine safety production. Most of the major accidents in my country's coal mines are severe gas accidents, and the number of casualties caused by gas accidents is also the largest proportion of all coal mine accidents. Therefore, the prevention and control 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 and control methods, which...

Claims

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Application Information

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