关键词: 岩石, 破坏, 声发射, 能率, 声发射率, 突变理论

Abstract: The acoustic emission rate and the energy rate are the key parameters of reflecting the rock failure. However, at present many scholars prefer acoustic emission rate to energy rate for predicting the rock failure. The research adopts the acoustic emission parameters at uniaxial compression of a kind of limestone rocks to firstly describe the catastrophe phenomenon of acoustic emission rate and energy rate, and research on the relationship of between acoustic emission rate and energy rate. It is found that the acoustic emission rate fully accord with that of energy. Then, the catastrophe theory is applied to establish the catastrophic forecasting model of rock failure for the above acoustic emission rate and energy rate. So a comparative study of the catastrophe model of acoustic emission parameters analysis is introduced in this paper. It was concluded that the catastrophe model of acoustic emission rate and energy rate can well predict the rock failure.

Key words: Rock, Failure, Acoustic emission, Energy rate, Acoustic emission rate, Catastrophe theory