| 压应力对岩石破碎的分维的影响 |
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| 引用本文： | 徐永福；张庆华.压应力对岩石破碎的分维的影响[J].岩石力学与工程学报,1996,3(3):254-254. |
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| 作者姓名： | 徐永福；张庆华 |
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| 作者单位： | 河海大学(徐永福)，长江科学院(张庆华) |
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| 摘 要： | 对不同围压的实验中的砂岩破碎碎屑，用筛析法和比重计法分析砂岩碎屑的分布，发现砂岩破碎碎屑是分形分布。不同围压的实验中，碎屑分布的分维值不同。随着围压（有效压应力）的增加，砂岩破碎碎屑的分维增大。文中解释了砂岩碎屑分维增大的原因，研究了碎屑分形分布的物理机制。
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| 关 键 词： | 关键词 分维 围压 分形模型 砂岩碎屑 |
| 收稿时间： | 1994-12-31 |
| 修稿时间： | 1995-5-29 |
INFLUENCE OF CONFINING PRESSURE ON FRACTAL DIMENSION OF SANDSTONE FRAGMENT DISTRIBUTION |
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| Xu Yongfu,Zhang Qinghua.INFLUENCE OF CONFINING PRESSURE ON FRACTAL DIMENSION OF SANDSTONE FRAGMENT DISTRIBUTION[J].Chinese Journal of Rock Mechanics and Engineering,1996,3(3):254-254. |
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| Authors: | Xu Yongfu Zhang Qinghua |
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| Abstract: | Through analysis of sandstone fragments in triaxial tests with different confining pressures by sieve method and specific gravity method, it is found that the distribution of sandstone fragments is fractal. The fractal dimensions of sandstone fragment distribution are different under different confining pressures in triaxial tests. The fractal dimension of sandstone fragment distribution increases with the increasing of confining pressure. The physical mechanism of fragment distribution and the fractal model on the increasing of fractal dimension are studied in this paper. |
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| Keywords: | fractal dimension confining pressure fractal model sandstone fragment |
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