| 单轴压缩下软岩的动态力学特性试验研究 |
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| 引用本文： | 李海波,王建伟,李俊如,周青春,刘亚群.单轴压缩下软岩的动态力学特性试验研究[J].岩土力学,2004,25(1):1-4. |
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| 作者姓名： | 李海波 王建伟 李俊如 周青春 刘亚群 |
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| 作者单位： | 1.中国科学院武汉岩土力学研究所，湖北 武汉 430071； 2.黄河水利职业技术学院，河南 开封 475001 |
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| 基金项目： | 国家自然科学基金(50009008)，国家重点基础发展规划项目(2002CB412705)资助项目。 |
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| 摘 要： | 对软岩(砂浆模拟材料)进行了应变速率范围为10-5~101s-1的动单轴压缩实验。实验结果表明，试样的抗压强度随应变速率的增加有较明显的增加趋势，增加幅度大于硬岩；试样的弹性模量以及泊松比随着应变速率的增加均有增加的趋势，但幅度小于强度的增加幅度。并根据不同应变速率下试样破裂面的SEM实验结果，初步地分析了软岩动态力学特性机理。
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| 关 键 词： | 动单轴压缩 软岩 力学特性 |
| 文章编号： | 1000-7598-(2004)01-0001-04 |
| 收稿时间： | 2003-02-28 |
| 修稿时间： | 2003年2月28日 |
Mechanical properties of soft rock under dynamic uniaxial compression |
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| LI Hai-bo,WANG Jian-wei,LI Jun-ru,ZHOU Qing-chun,LIU Ya-qun.Mechanical properties of soft rock under dynamic uniaxial compression[J].Rock and Soil Mechanics,2004,25(1):1-4. |
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| Authors: | LI Hai-bo WANG Jian-wei LI Jun-ru ZHOU Qing-chun LIU Ya-qun |
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| Institution: | 1.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2.Yellow River conservancy technical institute, Kaifeng 475001, China |
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| Abstract: | The experimental study on soft rock (analogized with mortar) under dynamic uniaxial compression at the strain rates from 10-5 to 101 s-1 has been carried out. It is indicated that the compressive strength of the soft rock increases with the increasing strain rate; and the rising rates are higher than that of hard rock. The Youngs modulus and Poissons ratio of the soft rock increase with the increasing strain rate, but the rising rates are less than that of compressive strength. In addition, based on the SEM results, the mechanism of the strain rate effect of the soft rock is primarily analyzed. |
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| Keywords: | dynamic uniaxial compression soft rock mechanical properties |
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