Abstract
In order to know the Kaiser effect of AE (Acoustic Emission) in triaxial directions of a rock mass, the Kaiser effect of AE in the granite specimens were investigated by applying the compressive pre-stresses of various intensities repeatedly on the respective directions to the specimens.From the testing results, it was found that the pre-compressed principal stresses were precisely estimated by the Kaiser effect, provided the specimens had been repeatedly pre-compressed until the increment of the residual strain ceased.
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