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Outline
The visualization of rockburst risk is of great significance to the exploitation of deep phosphate rock resources. Firstly, through the uniaxial loading test of aluminum metal, it is proved that the temperature change caused by thermo-mechanical coupling can be detected by MicroIIIS series 640 infrared thermal imager, and the increase of stress is the core reason for the increase of thermo-mechanical coupling temperature. Then, aiming at the problem that the infrared image in the actual phosphorus mine roadway is blurred and the irrelevant high temperature body intervenes to affect the effective infrared radiation characteristics information in the infrared image, the original gray image is enhanced by the adaptive gray scale stretching algorithm, so that the information entropy, histogram equalization and global contrast are optimized. The nonlinear mapping pseudo-color transformation based on temperature width adjustment is applied to enhance the visual effect of rockburst risk visual detection in actual phosphate rock roadway. Finally, through the field test of phosphate rock roadway, it is proved that the DMYB-03 handheld rockburst detector after infrared image enhancement can not only show the details of phosphate rock roadway and the infrared radiation characteristics caused by stress concentration more clearly, but also divide the stress concentration degree into stable, medium stress concentration and high stress concentration through the color brightness index of risk area and safety area. The information entropy of high stress concentration is 26.55% higher than that of stable image, the average brightness is 25.08% higher, the brightness histogram equalization is 8.36% higher, and the global contrast is 243.38% higher, semi-quantitatively reflects the degree of stress concentration of rock mass. The research results provide technical support for the visual detection of rockburst risk in mining, transportation and other fields.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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