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加载速率对岩石声发射信号的总体影响是巨大的。通过采集大理岩和红砂岩单轴压缩声发射信号,分析计算了不同加载速率下的声发射过程时间序列的参数,得到了声发射信号与加载速率的变化关系,结果表明,不同加载速率下的声发射信号特征具有明显的不同,随着加载速率的增大,能率和振铃率都随之增大,而产生的能量和振铃计数的总和却逐渐减少小,加载速率的不同,在某种意义上还会影响到岩石的破坏方式,加载速率越大,岩石的破坏越趋于剧烈。
The overall effect of loading rate on rock acoustic emission signals is enormous. By collecting uniaxial compression acoustic emission signals of marble and red sandstone, the parameters of acoustic emission time series under different loading rates were analyzed and the relationship between acoustic emission signal and loading rate was obtained. The results show that under different loading rates Acoustic emission signal characteristics are significantly different, with the increase of the loading rate, the energy rate and ringing rate are increased, and the resulting energy and ring count is the sum of the small, the loading rate is different in a certain In the sense of the word, the way of rock destruction will also be affected. The greater the loading rate, the more the rock destruction tends to be violent.