| 饱和岩石的应变率效应和各向异性的机理探讨 |
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| 引用本文： | 田象燕,高尔根,白石羽.饱和岩石的应变率效应和各向异性的机理探讨[J].岩石力学与工程学报,2003,22(11):1789-1792. |
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| 作者姓名： | 田象燕 高尔根 白石羽 |
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| 作者单位： | 中国科学技术大学地球及空间科学系第三世界科学院中地球科学及天文学高级研究中心,合肥,230026 |
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| 摘 要： | 在MTS上对南京砂岩和大理大理岩进行了应变率为l0^-5～l0^-2/s的单轴压缩试验，试验结果得出砂岩、大理岩具有各向异性，相对来说大理岩的各向异性要弱一些。同时，大理岩和砂岩随应变率的增加强度增大，具有明显的应变率效应．对饱和岩石的应变率效应和各向异性作了分析得出饱和液体起到了促进各向异性和应变率效应的作用。
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| 关 键 词： | 岩石力学 应变率效应 饱和岩石 各向异性 单轴压缩试验 |
| 文章编号： | 1000-6915(2003)11-1789-04 |
| 收稿时间： | 2003-1-8 |
| 修稿时间： | 2003年1月8日 |
DISCUSSION ABOUT MECHANISM OF STRAIN-RATE EFFECT AND ANISOTROPY OF SATURATED ROCKS |
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| Tian Xiangyan,Gao Ergen,Bai Shiyu.DISCUSSION ABOUT MECHANISM OF STRAIN-RATE EFFECT AND ANISOTROPY OF SATURATED ROCKS[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1789-1792. |
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| Authors: | Tian Xiangyan Gao Ergen Bai Shiyu |
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| Abstract: | Uniaxial compressive experiment of Nanjing sandstone and Dali marble is conducted on MTS with strain rate varied from 510- to 210-/s. It can be found that sandstone and marble are of obvious characteristics of anisotropy,but the anisotropy of marble is weaker than that of sandstone. And they are of obvious strain-rate effect,that is,strength increases with strain rate. Saturation liquid can promote the character of anisotropy and strain rate effect,and under the same strain rate,the viscosity of saturation liquid can only affect rock strength. As strain rate rises,the influence of viscosity on rock strength reduces. |
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| Keywords: | rock mechanics strain-rate effect saturated rock anisotropy |
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