岩石材料在压缩过程中能量释放将产生大量的声发射现象。本文基于Kaiser效应理论及Kaiser点的确定方法,运用单轴压缩试验研究分析了岩石试件的Kaiser效应,结果表明:当岩石压应力达到或超过先期加载应力水平时,将首次出现大量的声发射事件,此处应力水平点即为Kaiser点,采用声发射确定的Kaiser效应点应力值比真实值大8%~8.7%。这表明,Kaiser效应法是一种简单、直观、经济的地应力测定方法。 Rock energy release in the compression process will produce a lot of acoustic emission phenomenon. Based on the Kaiser effect theory and Kaiser point determination method, the uniaxial compression test is used to analyze the Kaiser effect of the rock specimen. The results show that when the rock compressive stress reaches or exceeds the pre-stress level, a large amount of acoustic emission Event, where the stress level point is the Kaiser point, the Kaiser effect point stress value determined by acoustic emission is 8% ~ 8.7% larger than the real value. This shows that the Kaiser effect method is a simple, intuitive and economical method of measuring geostress.