Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation
作者： Guang-Jian Liu , Cai-Ping Lu , Hong-Yu Wang , Peng-Fei Liu , Yang Liu
DOI: 10.1155/2015/583862
关键词:
摘要: Electromagnetic radiation (EMR) can reflect the stress state and deformation level of coal, yet its warning indexes correlated with coal properties roof caving is poorly understood. The laboratory observations EMR effects samples bursting failure in situ investigations process are presented this paper. peak increasing discussed when happens, which provides an explanation to signals positively well loaded. linearly relation also found between intensity uniaxial compressive strength, maximum amplitudes pulses behave a logarithmic accretion tendency energy coal. By investigations, it that amplitude effectively warn based on critical value 120 mV proposed from experiments.
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