| SPATIAL DISTRIBUTION AND FRACTAL STRUCTURE OF AE FOCUSES OF INADA GRANITE UNDER TRIAXIAL COMPRESSION |
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| 作者单位： | Lei Xing-lin，Ma Jin(Institute of Geology，State Seismological Bureau，Beijing 100029)Kusunose K.，Nishizawa O.，Satoh T.(Geological Survey of Japan，Tsukuba，305 Japan) |
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| 摘 要： | An experimental study on the spatial distribution of the focuses of acoustic emissions of Inada granite (coarse grained granodiorite) under triaxial compression is reported in this paper. It is pointed out that AE locations is fractal with a dimension of 2.2 in average, lower than the result of Oshima granite (fine grained granodiorite), which is 2.7, under similar deformation condition. For Inada granite a band-limited fractal had been observed. Fractal dimension changed around grai
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SPATIAL DISTRIBUTION AND FRACTAL STRUCTURE OF AE FOCUSES OF INADA GRANITE UNDER TRIAXIAL COMPRESSION |
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| Authors: | Lei Xing-lin Ma Jin |
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| Abstract: | An experimental study on the spatial distribution of the focuses of acoustic emissions of Inada granite (coarse grained granodiorite) under triaxial compression is reported in this paper. It is pointed out that AE locations is fractal with a dimension of 2.2 in average, lower than the result of Oshima granite (fine grained granodiorite), which is 2.7, under similar deformation condition. For Inada granite a band-limited fractal had been observed. Fractal dimension changed around grain size of the rock (RC = 5mm) Fractal dimension Ds and Dl (below and above the grain size, respectively) had different developing tendency. Ds and Dl can be considered as indicators of the inhomogeneity of stress field in corresponding scale. |
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| Keywords: | Acoustic emission Microfracturing Three-dimensional focal location Fractal |
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