Abstract: In order to study the acoustic emission energy distribution and the feasibility of fiber bundle model based on mean field theory in numerical simulation on acoustic emission characteristics during the tensile damage process of coal， Brazilian tests on coal specimen were carried out under different loading rates. The results showed that the acoustic emission energy probability density distribution follows a power-law distribution and its distribution exponents are close to the predicted value of the mean field theory model. At the same time，the acoustic emission energy probability density distribution also follows a power-law distribution within different time intervals. The test results are similar to numerical results of the mean field theory based fiber bundle model， and provide a basis for the confirmation of the fiber bundle model parameters.

Key words: Brazilian test, acoustic emission energy, power-law distribution, mean field theory, fiber bundle model