| 岩石压剪断裂的模型试验研究 |
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| 引用本文： | 刘东燕,朱可善.岩石压剪断裂的模型试验研究[J].土木与环境工程学报,1994,16(1). |
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| 作者姓名： | 刘东燕 朱可善 |
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| 作者单位： | 重庆建筑大学建筑工程学院 |
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| 摘 要： | 本文通过含中心斜裂纹砂浆试件的单轴压缩模型试验，测试并分析了裂纹扩展过程中的声发射特性和裂纹面相对位移。试验表明：岩石类脆性材料的压剪断裂破坏机理与拉剪断裂有本质的区别，裂纹面相对位移随轴压荷载的变化曲线与裂纹扩展过程中的声发射曲线具有一定的同步性，反映出中心斜裂纹压剪断裂的阶段性，以及裂纹的几何尺寸、分布规律和裂纹面物理力学性质对岩石压剪断裂的影响。
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| 关 键 词： | 岩体，压剪断裂，声发射，应力集中 |
AN EXPERIMENTAL STUDY ON CEMENT MORTAR SPBCIMENS WITN A CENTRAL SLITS UNDBR UNIAXIAL COMPRESSION |
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| Liu Dongyan,Zhu Keshan.AN EXPERIMENTAL STUDY ON CEMENT MORTAR SPBCIMENS WITN A CENTRAL SLITS UNDBR UNIAXIAL COMPRESSION[J].Journal of Civil and Environmental Engineering,1994,16(1). |
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| Authors: | Liu Dongyan Zhu Keshan |
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| Affiliation: | Paculty. of Civil Engineering |
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| Abstract: | The cement mortar specimens with a central slits are tested under uniaxial com-pression.The test results show that tensile cracks initiate,as a rule near the tip and may propagatesteady for a certain length.Mean while shear fructures appear and propagate slowly to the failurestate in the zone of compressive stress concentration. So the fracture strength of rock under compres-sion might be differentiated into the initial tensile strength,the peak strength and residual strength. |
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| Keywords: | rockmass fracture mechanics acoustic emission stress concentration |
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