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Zeng Zhengwen, Ma Jin, Wang Aifang. 1994: SPATIAL EVOLUTION OF ACOUSTIC EMISSION EVENTS DURING DEFORMATION AND FAILURE OF DISCONTINUOUS ROCKS AND ITS SIGNIFICANCE. JOURNAL OF ENGINEERING GEOLOGY, 2(1): 46-53.
Citation: Zeng Zhengwen, Ma Jin, Wang Aifang. 1994: SPATIAL EVOLUTION OF ACOUSTIC EMISSION EVENTS DURING DEFORMATION AND FAILURE OF DISCONTINUOUS ROCKS AND ITS SIGNIFICANCE. JOURNAL OF ENGINEERING GEOLOGY, 2(1): 46-53.

SPATIAL EVOLUTION OF ACOUSTIC EMISSION EVENTS DURING DEFORMATION AND FAILURE OF DISCONTINUOUS ROCKS AND ITS SIGNIFICANCE

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  • Publish Date: 1994-01-22
  • Characteristics of spatial evolution of deformation and failure of discontinuous rockmass were investigated by analyzing location of accoustic emission events and geometry of the fracture surfaces. The results show that the spatial dynamic process of deformation and failure of single-jointed rockamss were controled by the joint angle. The fracture mode of single-jointed rockmass changes from sudden failure accompanying with local concentration of AE events to progressive failure with AE events dispersing in the whole jointed layer. Correspondingly, the fracture surfaces developed from simple continuous interfaces of rock-joint substances to complex discontinuous layer inter-joint subfractures. For complex jointed rockmass, the deformation and failure process were controled by a (set of) main discontinuity, Strong AE events occured at or near the conjunction parts of discontinuities. In modes containing several paralell main discontinuities, AE events during the last deformation stage were located only in the final filure surfaces.
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