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Infrared radiation quantification representing method for bearing coal rock damage evolution

A technology of infrared radiation and damage evolution, applied in the field of quantitative characterization of infrared radiation, can solve the problems of fine calibration of damage parameters and no quantitative characterization method.

Active Publication Date: 2019-03-08
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, in the prior art, only the qualitative analysis of infrared radiation on the surface of coal rocks has been carried out, and suitable infrared radiation characterization parameters have not been found to achieve fine calibration of damage parameters, and no quantitative characterization method has been formed.

Method used

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  • Infrared radiation quantification representing method for bearing coal rock damage evolution
  • Infrared radiation quantification representing method for bearing coal rock damage evolution
  • Infrared radiation quantification representing method for bearing coal rock damage evolution

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention is further described:

[0030] A quantitative characterization method of infrared radiation carrying damage evolution of coal rocks, comprising the following steps:

[0031] The first step is to collect the original infrared radiation matrix sequence of coal rocks:

[0032] The reference coal rock is arranged on the mining face, and the infrared thermal imager is used to detect and store the surface infrared radiation information of the coal rock mass and the reference coal rock on the mining face, and the original infrared radiation matrix sequence of the bearing coal rock and the reference coal rock is obtained.

[0033] The second step is to establish the infrared radiation temperature change matrix sequence:

[0034] Perform first-order forward difference processing on the original infrared radiation matrix sequence in the first step to obtain the differential infrared radiation matrix sequence o...

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Abstract

The invention discloses an infrared radiation quantification representing method for bearing coal rock damage evolution. By using the method, a maximum value in a coal rock infrared radiation variabletemperature matrix is taken as a threshold value used for bearing the infrared radiation change of coal rock caused by micro-element damage, the cumulative number of infrared radiation in a bearing coal rock damage evolution process is screened, and the infrared radiation quantification representing method for bearing coal rock damage evolution is constructed based on a continuous damage mechanics theory. Through monitoring infrared radiation data in real time, the real-time process of coal and rock mass damage evolution can be dynamically and accurately evaluated, a mine safety production level is improved and the stability and the precision of coal and rock mass monitoring in modern rock mechanics and an engineering field are increased.

Description

technical field [0001] The invention relates to an infrared radiation quantitative characterization method for carrying damage evolution of coal and rock, and belongs to the field of water conservation coal mining and rock formation control. Background technique [0002] The process of bearing stress, deformation and rupture of coal rock is a process from the disordered distribution of internal diffuse micro-defects to orderly development, and finally the formation of macroscopic cracks, which is also the root cause of changes in infrared radiation on the coal rock surface. The fracture of each voxel of coal and rock will contribute to the change of infrared radiation, and there is a regular quantitative relationship between the degree of damage evolution of coal and rock and its surface infrared radiation response information. Therefore, by observing the infrared radiation on the surface of coal and rock, the deformation of coal and rock can be grasped in time and the degre...

Claims

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Application Information

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IPC IPC(8): G01J5/00
CPCG01J5/00G01J5/0003G01J5/48
Inventor 马立强孙海张东升匡铁军余斌刘伟
Owner CHINA UNIV OF MINING & TECH
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