岩石声发射Kaiser效应的理论和实验研究

来源期刊：中国有色金属学报1997年第1期

论文作者：陈忠辉 唐春安 徐小荷 李春林

文章页码：9 - 12

关键词：声发射 Kaiser效应 岩石破裂

Key words：acoustic emission Kaiser effect uniaxial compression

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。

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.