A denoising method for infrared radiation information in the process of bearing coal and rock damage and fracture
A technology of infrared radiation and coal rock, which is applied in the field of non-destructive monitoring of damage and rupture of coal and rock mass in mines, can solve problems such as the influence of time-domain changes in average infrared radiation temperature, achieve the elimination of the influence of average infrared radiation temperature, increase clarity, and solve the problem of The effect of the mean infrared radiation temperature error influence
Active Publication Date: 2022-03-11
CHINA UNIV OF MINING & TECH
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[0005] Purpose of the invention: In view of the above problems, the present invention proposes a method for denoising infrared radiation information in the process of carrying coal damage and cracking, so as to solve the influence of non-uniformity correction on the change of average infrared radiation temperature in the time domain
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[0056] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0057] A method for denoising infrared radiation information in the process of carrying damage and cracking of coal rocks according to the present invention, the process is as follows figure 1 shown, including the following steps:
[0058] Step 1, carry out the infrared radiation observation experiment of uniaxial loading of the coal rock sample, the experiment diagram is as follows figure 2 As shown, the coal rock sample 1 of the experimental group and the coal rock sample 2 of the control group are set, the coal rock sample 1 of the experimental group is placed on the loading platform 9, and the coal rock sample 2 of the control group is placed on the storage platfor...
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The invention discloses a method for denoising infrared radiation information in the process of carrying damage and fracture of coal rock, which belongs to thermal infrared denoising methods. This method divides the infrared radiation temperature matrix of the coal rock surface of the experimental group and the control group, uses the noise information of the coal rock infrared radiation matrix of the control group, denoises the infrared radiation information of the coal rock in the experimental group after segmentation, and uses cubic function fitting to filter The optimal results are calculated and averaged to obtain the true average infrared radiation temperature change characteristics in the process of bearing coal damage and fracture. This method solves the problem of environmental noise and non-uniformity correction processing common in uncooled thermal imagers on the average temperature of the bearing coal rock surface, and improves the accuracy, scientificity and effectiveness of coal rock infrared radiation non-destructive monitoring technology , Improve the safety production level of mine and other geotechnical engineering.
Description
technical field [0001] The invention belongs to the technical field of non-destructive monitoring of damage and rupture of coal and rock mass in mines, and in particular relates to an infrared radiation information denoising method in the process of carrying damage and rupture of coal and rock. Background technique [0002] The damage and fracture of bearing coal rock is the root cause of disasters such as coal pillar collapse, rock burst, water inrush and roof collapse. Real-time monitoring of the damage and fracture process of bearing coal and rock, so as to realize accurate early warning of mine disasters, is a necessary measure to avoid casualties and economic losses. The surface infrared radiation information of coal rocks will respond dynamically under the action of external loads, which is an ideal means for monitoring and early warning of mine disasters. The average infrared radiation temperature can reflect the concentration of infrared radiation temperature on the...
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IPC IPC(8): G01N3/06G01J5/48G06F17/16G06F17/18
CPCG01N3/068G01J5/0003G06F17/16G06F17/18G01N2203/0067G01N2203/021G01N2203/0694G01J2005/0077G01J2005/0092
Inventor 马立强刘伟张吉雄来兴平孙海
Owner CHINA UNIV OF MINING & TECH