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Detection method for gas outburst based on polarization spectrum analysis

A gas outburst and polarization technology, applied in the direction of polarization influence characteristics, etc., can solve problems such as instability of gas-containing coal body, and achieve the effects of considerable economic benefits, avoidance of economic losses and high accuracy

Inactive Publication Date: 2013-02-27
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the prediction result cannot fully represent the outburst risk of the coal body within the entire prediction step range. The gas-containing coal body is unstable in the production process, and the results obtained at the prediction time are only static and cannot fully represent the coal body. Therefore, there is an urgent need for a technical solution that can comprehensively and accurately predict coal and gas outburst detection methods

Method used

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  • Detection method for gas outburst based on polarization spectrum analysis
  • Detection method for gas outburst based on polarization spectrum analysis

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Experimental program
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Embodiment approach 1

[0029] figure 1 It is a flowchart showing the acquisition of polarization spectrum data parameters.

[0030] According to the characteristics of experimental measurements and outdoor experiments, refer to figure 1 The specific working steps of polarization spectrum imaging are described. The texture characteristics and polarization change characteristics of ground objects are described in the image measured by imaging polarization spectrometer, and then the data of polarization spectrometer is used to invert the image data, and finally the polarization characteristics of ground objects are accurately described. and texture features.

[0031] figure 2 It is a schematic diagram showing the spectrum received by the detector of the present invention.

[0032] refer to figure 2 , it can be seen that in the visible light remote sensing area, the energy reaching the surface of the detection target mainly comes from two parts, the direct sunlight and atmospheric scattering ...

Embodiment approach 2

[0045] Embodiment 2 : When the wavelength is 550nm, =24.27°, =42°, = 200° The polarized spectrum data parameter of the white tile after inversion is =0.28 (sr -1 ), = 0.003 (sr -1 ), =2.7*10 -3 (sr -1 ), =0.02, =0.32(rad).

[0046] Others are the same as Embodiment 1.

Embodiment approach 3

[0047] Embodiment 3 : When the wavelength is 600nm, =24.27°, =42°, = 200° The polarized spectrum data parameter of the white tile after inversion is =0.28 (sr -1 ), = 0.003 (sr -1 ), =-1.5*10 -3 (sr -1 ), =0.01, =-0.15 (rad). Others are the same as Embodiment 1.

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Abstract

The invention relates to a detection method for gas outburst based on polarization spectrum analysis, and belongs to the field of coal mine automation on-line monitoring technology. The detection method is characterized in that outburst surface state, temperature and other physicochemical characteristics are deduced by acquiring polarization image information of a gas outburst position through the detection of electromagnetic radiation intensity when the gas outbursts. The detection method can observe the detected surface from different angles, can accurately determine a specific position of the gas outburst, and precisely describe the physical and chemical structures of the gas outburst surfaces. The method is convenient for detection, can improve the accuracy of the gas outburst prediction, is easy to operate, has small production influence, and is low in cost.

Description

technical field [0001] The gas outburst detection method based on the imaging spectrum polarization technology of the present invention belongs to the field of coal mine automatic on-line monitoring technology. When the gas outburst is detected, the electromagnetic radiation intensity is detected to obtain the polarization image information of the gas outburst position to calculate the outburst surface state, temperature and others. Physical and chemical characteristics, so as to observe the measured surface from different angles, accurately determine the specific position of the gas outburst, and accurately describe the technical scheme of the physical and chemical structure of the gas outburst surface. Background technique [0002] China is one of the countries with the most serious coal and gas outbursts in the world. With the increase of mine depth and mining scale, the risk of mine outbursts has gradually increased, which not only threatens personnel safety, but also aff...

Claims

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Application Information

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IPC IPC(8): G01N21/21
Inventor 乔铁柱陈昕满壮赵弼龙郑洪强
Owner TAIYUAN UNIV OF TECH
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