通过岩石劈裂破坏实验,采用全相位FFT分析算法,重点讨论了不同通道、不同阶段声发射信号的相位谱特征,根据相位属性,划分为线性以及非线性相位。研究结果表明:线性相位广泛存在于劈裂演化阶段。且与岩石破裂中各阶段能量释放的大小呈正相关,在每一个能量较大值点对应的都是线性相位。比较不同通道同一阶段的能量数据得到,破裂越剧烈对应线性相位的比例越大。这一结论为岩石破裂的阶段分析提供了重要思路。 Through the experiment of rock splitting failure and the full phase FFT analysis algorithm, the phase spectrum characteristics of acoustic emission signals at different channels and phases are discussed. According to the phase properties, the phase and phase characteristics are classified into linear and nonlinear phases. The results show that the linear phase exists widely in the cleavage evolution stage. And it is positively correlated with the energy release in each stage of rock rupture, corresponding to the linear phase at each point of larger energy value. Comparing the energy data of the same phase in different channels, the more severe the corresponding phase of the linear phase is. This conclusion provides an important idea for the phase analysis of rock failure.