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中文摘要：
自然界中的岩石都含有一定的水，研究水对岩石破裂失稳过程声发射特征的影响有重大的意义。通过对处于自然和含水饱和两种状态下粉砂岩试件进行单轴加载声发射试验，获取每个试件加栽全过程的力学及声发射参数，并采集声发射信号。对处于不同含水状态下的岩石声发射信号做快速傅里叶变换，发现岩石破裂失稳含水饱和状态下声发射信号的频谱范围和主频范围都比自然状态下的要窄，而且含水饱和的试件其主频由中高频向低频发展的趋势更明显，其平均主频也要低于自然状态的。
英文摘要：
As rocks in nature contains a certain amount of wa- ter, the theoretical research on the influence of water on AE characteristics in rupture process is of great importance. The uniaxial loading AE tests on siltstone under natural and wa- ter-saturated conditions were carried out to obtain the me- chanical and AE parameters in the whole process of loading, and to collect acoustic emission signals. AE signals of all the specimens were analyzed with fast Fourier transform, and the result showed that the range of spectrum and dominant frequency of the specimens in saturated water was narrower than in natural water, and the trend of dominant frequency in saturated water was more clear that migrating from medi-um-high frequency to low frequency, and the average domi- nant frequency was lower than in natural water too.
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