考虑含缺陷岩石的声发射数值模拟研究

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Abstract Rock is a heterogeneous material which consists of grains with different strengths. Studies show that different homogeneous rock materials possess different acoustic emission characteristics in uniaxial compression. Researches of these characteristics have an important role in forecasting rockburst. Fish function is drew to realize model which contains random defect units and records events of acoustic emission. Acoustic emission on homogeneous and random defective material in uniaxial compression is simulated with FLAC3D. The differences of homogeneous model and defective model are discussed，as well as the influence of number of defective units on acoustic emission. Results have an important significance for study of rock acoustic emission characteristics.

Key words： rock mechanics FLAC3D acoustic emission random defect numerical simulation

Received: 22 December 2012

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/Isl/3198

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