(1.东北大学采矿系，沈阳 110006;
2.吕利欧大学， 瑞典)
摘 要: 利用统计损伤模型研究了岩石声发射的Kaiser效应机制，建立了声发射数和岩石微元强度统计分布之间的定量关系。 根据微观统计损伤理论， 利用简单的力学模型推导出单轴应力状态下的Kaiser效应表达式，理论和实验结果较吻合，为岩石声发射规律的理论研究提供了一条新途径。
关键字: 声发射 Kaiser效应 岩石破裂
（1.Department of Mining Engineering, Northeastern University, Shenyang 110006 ;
2.Lulea?University of Technology, S-971 87 Lulea Sweden）
Abstract:The mechanism of Kaiser effect was studied with the aid of a damage model for rock. Recognizing that the acoustic emission(AE) counts are transitional elastic waves due to local damage of the rock, the quantitative relation between AE counts and the statistical distribution of the local strength of the rock has been established. According to damage theory, an expression for Kaiser effect under uniaxial stress state was derived from the model. This is found to be in agreement with the experimental results.
Key words: acoustic emission Kaiser effect uniaxial compression
