Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression
In order to study the energy evolution and infrared radiation response characteristics during the deformation and failure process of coal with different bedding angles, uniaxial compression tests with four different bedding angles (0°, 30°, 60° and 90°) were carried out on a strong burst liability c...
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Editorial Department of Coal Science and Technology
2024-12-01
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| Series: | Meitan kexue jishu |
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| Online Access: | http://www.mtkxjs.com.cn/article/doi/10.12438/cst.2023-1639 |
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| author | Guoning ZHANG Yixin ZHAO Yuandong SUN Zhixin GONG |
| author_facet | Guoning ZHANG Yixin ZHAO Yuandong SUN Zhixin GONG |
| author_sort | Guoning ZHANG |
| collection | DOAJ |
| description | In order to study the energy evolution and infrared radiation response characteristics during the deformation and failure process of coal with different bedding angles, uniaxial compression tests with four different bedding angles (0°, 30°, 60° and 90°) were carried out on a strong burst liability coal samples from 3-1 coal seam of Hongqinghe coal mine. The infrared temperature field characteristics of the coal samples during deformation and damage were monitored using an infrared thermal imaging camera. The test results show that as the bedding angle increases the compressive strength and strain energy of the sample show a “V” shaped trend, reaching the minimum value at 60°. The bedding has a significant impact on the elastic strain Ue in the pre-peak stage and dissipation energy Ud in the post-peak stage; The coal samples showed an overall warming trend with different bedding angles, with an average infrared temperature precursor point of 0.84σp.The bedding structure seriously affects the infrared radiation temperature and the difference of failure patterns lead to different temperature ranges. The 0° and 30° specimens are dominated by shear-tension composite failure, with a high temperature rise of 1.12 and 1.30 ℃, respectively, while the 60° specimen is dominated by single shear failure, with a low temperature rise of 0.46 ℃. The failure of 90° specimen is tensile failure, and the temperature rise is the lowest 0.4 ℃. The strain energy was positively correlated with the mean IR radiation temperature, and the correlation degree was ranked as U<Ue<Ud. The research results can provide reference for early warning of coal dynamic disasters. |
| format | Article |
| id | doaj-art-4434a79e569c4693b8accec57b467843 |
| institution | Kabale University |
| issn | 0253-2336 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Department of Coal Science and Technology |
| record_format | Article |
| series | Meitan kexue jishu |
| spelling | doaj-art-4434a79e569c4693b8accec57b4678432025-01-15T05:38:22ZzhoEditorial Department of Coal Science and TechnologyMeitan kexue jishu0253-23362024-12-015212485910.12438/cst.2023-16392023-1639Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compressionGuoning ZHANG0Yixin ZHAO1Yuandong SUN2Zhixin GONG3Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology-Beijing, Beijing 100083Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology-Beijing, Beijing 100083Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology-Beijing, Beijing 100083Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology-Beijing, Beijing 100083In order to study the energy evolution and infrared radiation response characteristics during the deformation and failure process of coal with different bedding angles, uniaxial compression tests with four different bedding angles (0°, 30°, 60° and 90°) were carried out on a strong burst liability coal samples from 3-1 coal seam of Hongqinghe coal mine. The infrared temperature field characteristics of the coal samples during deformation and damage were monitored using an infrared thermal imaging camera. The test results show that as the bedding angle increases the compressive strength and strain energy of the sample show a “V” shaped trend, reaching the minimum value at 60°. The bedding has a significant impact on the elastic strain Ue in the pre-peak stage and dissipation energy Ud in the post-peak stage; The coal samples showed an overall warming trend with different bedding angles, with an average infrared temperature precursor point of 0.84σp.The bedding structure seriously affects the infrared radiation temperature and the difference of failure patterns lead to different temperature ranges. The 0° and 30° specimens are dominated by shear-tension composite failure, with a high temperature rise of 1.12 and 1.30 ℃, respectively, while the 60° specimen is dominated by single shear failure, with a low temperature rise of 0.46 ℃. The failure of 90° specimen is tensile failure, and the temperature rise is the lowest 0.4 ℃. The strain energy was positively correlated with the mean IR radiation temperature, and the correlation degree was ranked as U<Ue<Ud. The research results can provide reference for early warning of coal dynamic disasters.http://www.mtkxjs.com.cn/article/doi/10.12438/cst.2023-1639uniaxial compressionbedding effectenergy evolutioninfrared radiationprecursor characteristics |
| spellingShingle | Guoning ZHANG Yixin ZHAO Yuandong SUN Zhixin GONG Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression Meitan kexue jishu uniaxial compression bedding effect energy evolution infrared radiation precursor characteristics |
| title | Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression |
| title_full | Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression |
| title_fullStr | Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression |
| title_full_unstemmed | Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression |
| title_short | Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression |
| title_sort | energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression |
| topic | uniaxial compression bedding effect energy evolution infrared radiation precursor characteristics |
| url | http://www.mtkxjs.com.cn/article/doi/10.12438/cst.2023-1639 |
| work_keys_str_mv | AT guoningzhang energyevolutionandinfraredradiationcharacteristicsofdifferentbeddedcoalunderuniaxialcompression AT yixinzhao energyevolutionandinfraredradiationcharacteristicsofdifferentbeddedcoalunderuniaxialcompression AT yuandongsun energyevolutionandinfraredradiationcharacteristicsofdifferentbeddedcoalunderuniaxialcompression AT zhixingong energyevolutionandinfraredradiationcharacteristicsofdifferentbeddedcoalunderuniaxialcompression |