Influence of Immersion Time on the Frequency Domain Characteristics of Acoustic Emission Signals in Clayey Mineral Rocks.

In the elastic deformation stage, the acoustic emission signals in the above three main frequency concentration bands showed an increasing trend.

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With the increase in immersion time, the main frequency band of low frequency gradually disappears, and the main frequency of the acoustic emission signal increases, indicating that long-term immersion will lead to a decreasing trend in the development scale of rock fractures.

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