Couple analyzing the acoustic emission characters from hard composite rock fracture

Xingping Lai, Linhai Wang, and Meifeng CaiCivil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaThe Key Lab of West Mine Mining & Hazard Control of the Ministry of Education of China, Xi’an University of Science and Technology, Xi’an 710054, China

摘 要：<正> Rock mass is fractured media. Its fracture is a nonlinear process. The accumulation of acoustic emission （AE） is closely related to the degree of damage. The dynamics problem is simply described based on the non-equilibrium statistical theory of crack evolvement, trying to use the hybrid analysis of the statistical theory and scan electron microscopy （SEM）, the characters of AE signals from rock damage in a mined-out area is synthetically analyzed and evaluated. These provide an evidence to reverse deduce and accurately infer the position of rock fracture for dynamical hazard control.

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