| 岩石强度和变形真三轴试验研究 |
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| 引用本文： | 杨继华,刘汉东.岩石强度和变形真三轴试验研究[J].华北水利水电学院学报,2007,28(3):66-68. |
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| 作者姓名： | 杨继华 刘汉东 |
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| 作者单位： | 华北水利水电学院,河南,郑州,450011 |
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| 基金项目： | 国家自然科学基金
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河南省高校杰出科研创新人才工程项目 |
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| 摘 要： | 为了得到岩石在3向应力条件下的强度及变形特征,通过真三轴试验对岩石强度进行试验研究.结果表明:峰值强度(σ1)随着中间主应力(σ2)的增加有所提高,峰值强度的最大增加量达到65.8%;在中间主应力较低时,岩石呈现出塑性的特征,随着中间主应力的增加,岩石逐渐由塑性向脆性转变.所以岩石破坏不仅取决于最大主应力差(σ1-σ3),而且与中间主应力密切相关.
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| 关 键 词： | 岩石力学 中间主应力 真三轴试验 强度与变形特征 |
| 文章编号： | 1002-5634（2007）03-0066-03 |
| 修稿时间： | 2006-12-102007-01-16 |
True Triaxial Experimental Study on Rock Strength and Deformation |
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| YANG Ji-hua,LIU Han-dong.True Triaxial Experimental Study on Rock Strength and Deformation[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2007,28(3):66-68. |
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| Authors: | YANG Ji-hua LIU Han-dong |
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| Affiliation: | North China Institute of Water Conservancy and Hydroelectric Power,Zhengzhou 450011, China |
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| Abstract: | In order to get the behaviours of strength and deformation of rock in true triaxial conditions,rock strength is simulated through true triaxial experiment.The peak value of strength increases with the intermediate principal stress and the maximum of increase is 65.8%.The rock deformation is plastic characteristics with low intermediate principal stress and is transferred from plastic to brittle characteristics with high intermediate principal stress.The rock failure is depended on the deference of the principal stress(σ1-σ3),but also is good relationship with intermediate principal stress. |
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| Keywords: | rock mechanics intermediate principal stress true experiment characteristics of strength and deformation |
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