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Gas distribution detection method in coal mine underground goaf

A measurement method and goaf technology, applied in fuel oil testing, material inspection products, etc., can solve problems such as few measurement methods, inability to grasp the gas distribution law, and difficulty in gas distribution measurement

Inactive Publication Date: 2012-01-18
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It is very difficult to measure the gas distribution in the goaf of the coal mine because the personnel in the underground goaf cannot reach it. At present, there are few measurement methods, and the measurement accuracy of the existing methods is poor. gas presents difficulties

Method used

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  • Gas distribution detection method in coal mine underground goaf
  • Gas distribution detection method in coal mine underground goaf
  • Gas distribution detection method in coal mine underground goaf

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with accompanying drawing:

[0048] figure 1 As shown in the figure, it is the state diagram of gas measurement in the goaf of the coal mine. The position and connection relationship of each part must be correct and operated in sequence.

[0049] The measurement of gas distribution in the goaf is carried out directly in the coal mine. There are coal pillars 9 on both sides of the coal mining face 6 in the coal mine, and the goaf 3 is on the right side of the coal mining face 6 and coal pillar 9. The left part is the mining coal seam 10 of the working face; the air return roadway 11 and the air inlet roadway 12 are set between the coal seam 10 and the coal pillar 9 of the working face, and are connected to each other. The wind tunnel 12 is connected to the air inlet lane 20 in the mining area, and the measurement work cabin 18 is provided between the air return lane 19 and the air inlet lane 20; the go...

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Abstract

The present invention relates to a gas distribution detection method in a coal mine underground goaf. According to the present invention, the method is the streamline method, which adopts in situ direct sampling, transmission, collection and storage, detection, calculation, analysis and comparison according to the condition of the coal mine underground goaf to carry out the detection; a computer technology and sensors are adopted for collecting data of the gas; microcomputer programs are adopted for completing various analysis functions; the detection method adopts in situ direct sampling in the goaf, transmission, analysis, data printing, such that the process is rapid, the data is abundant and accurate, the gas distribution condition of the goaf can be directly mastered so as to provide the firsthand field data for treatment and elimination of the gas hazard; the detection method is rigorous, advanced, in site, intuitive, convenient, accurate and safe, and is an ideal gas distribution detection method in the coal mine underground goaf.

Description

technical field [0001] The invention relates to a method for measuring gas distribution in goafs in underground coal mines, and belongs to the technical field of gas distribution measurement in goafs related to coal mine safety. Background technique [0002] Methane gas will be produced during underground coal mining operations in coal mines. Gas accidents are prominent disasters in coal mines. Gas accidents and deaths account for more than 50% of the total number of accidents. How to prevent and eliminate gas accidents is a very important research topic. [0003] During coal mining operations, the gas in the coal seam will be released, part of the gas will be discharged along with coal transportation and underground ventilation, and part of the gas will remain in the goaf and be stored and accumulated in the goaf, so that the gas The increase of the concentration will cause a great potential safety hazard. Therefore, how to grasp and measure the gas distribution in the goaf...

Claims

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Application Information

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IPC IPC(8): G01N33/22
Inventor 邬剑明吴玉国王俊峰周春山
Owner TAIYUAN UNIV OF TECH
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