Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation
Electromagnetic radiation (EMR) can reflect the stress state and deformation level of coal, yet its warning indexes correlated with coal properties and roof caving is poorly understood. The laboratory observations of EMR effects of coal samples bursting failure and in situ investigations in the proc...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/583862 |
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| _version_ | 1832553339952300032 |
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| author | Guang-Jian Liu Cai-Ping Lu Hong-Yu Wang Peng-Fei Liu Yang Liu |
| author_facet | Guang-Jian Liu Cai-Ping Lu Hong-Yu Wang Peng-Fei Liu Yang Liu |
| author_sort | Guang-Jian Liu |
| collection | DOAJ |
| description | Electromagnetic radiation (EMR) can reflect the stress state and deformation level of coal, yet its warning indexes correlated with coal properties and roof caving is poorly understood. The laboratory observations of EMR effects of coal samples bursting failure and in situ investigations in the process of roof caving are presented in this paper. EMR peak with increasing stress is discussed when the failure of coal samples happens, which provides an explanation to EMR signals positively correlated well with the stress loaded. The linearly increasing relation is also found between EMR intensity and the uniaxial compressive strength, and EMR maximum amplitudes and pulses behave a logarithmic accretion tendency with bursting energy indexes of coal. By in situ investigations, it is well found that EMR amplitude can effectively warn coal deformation and failure based on the critical value 120 mV proposed from experiments. |
| format | Article |
| id | doaj-art-85f222cba98f46edb3fa7c473c7038c0 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-85f222cba98f46edb3fa7c473c7038c02025-02-03T05:54:19ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/583862583862Warning Method of Coal Bursting Failure Danger by Electromagnetic RadiationGuang-Jian Liu0Cai-Ping Lu1Hong-Yu Wang2Peng-Fei Liu3Yang Liu4School of Mining Engineering, Key Laboratory of Deep Coal Resource Mining (Ministry of Education), China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaSchool of Mining Engineering, Key Laboratory of Deep Coal Resource Mining (Ministry of Education), China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaSchool of Mining Engineering, Key Laboratory of Deep Coal Resource Mining (Ministry of Education), China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaSchool of Mining Engineering, Key Laboratory of Deep Coal Resource Mining (Ministry of Education), China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaSchool of Mining Engineering, Key Laboratory of Deep Coal Resource Mining (Ministry of Education), China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaElectromagnetic radiation (EMR) can reflect the stress state and deformation level of coal, yet its warning indexes correlated with coal properties and roof caving is poorly understood. The laboratory observations of EMR effects of coal samples bursting failure and in situ investigations in the process of roof caving are presented in this paper. EMR peak with increasing stress is discussed when the failure of coal samples happens, which provides an explanation to EMR signals positively correlated well with the stress loaded. The linearly increasing relation is also found between EMR intensity and the uniaxial compressive strength, and EMR maximum amplitudes and pulses behave a logarithmic accretion tendency with bursting energy indexes of coal. By in situ investigations, it is well found that EMR amplitude can effectively warn coal deformation and failure based on the critical value 120 mV proposed from experiments.http://dx.doi.org/10.1155/2015/583862 |
| spellingShingle | Guang-Jian Liu Cai-Ping Lu Hong-Yu Wang Peng-Fei Liu Yang Liu Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation Shock and Vibration |
| title | Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation |
| title_full | Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation |
| title_fullStr | Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation |
| title_full_unstemmed | Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation |
| title_short | Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation |
| title_sort | warning method of coal bursting failure danger by electromagnetic radiation |
| url | http://dx.doi.org/10.1155/2015/583862 |
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