| 单轴压缩下含倾斜单裂纹砂岩试件裂纹扩展量测研究 |
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| 引用本文： | 谢其泰,郭俊志,王建力,陈于高.单轴压缩下含倾斜单裂纹砂岩试件裂纹扩展量测研究[J].岩土力学,2011,32(10):2917-2922. |
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| 作者姓名： | 谢其泰 郭俊志 王建力 陈于高 |
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| 作者单位： | 1.台湾大学 地质科学系，台湾 台北10617；2.成功大学 资源工程学系，台湾 台南 70101 |
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| 摘 要： | 选用砂岩作为试验材料，进行不同倾斜角度单预制裂纹的单轴压缩试验研究，透过裂纹扩展量测技术以及配合相关断裂准则，得到：(1) 理论与实验的裂纹起裂角随裂纹倾斜角增加而增大；(2) 透过相关断裂准则，砂岩试件在裂纹尖端产生反翼裂纹是因为剪力破坏；(3) 在单轴压缩作用下砂岩试件裂纹扩展受单裂纹的倾斜角影响，当裂纹倾斜角较小时，裂纹不易起裂；当裂纹倾斜角较大时，裂纹起裂比较容易；(4) 在单轴压缩作用下砂岩试件则受单预制裂纹的倾斜角影响，当裂纹倾斜角较小时，裂纹扩展属于非稳定扩展；当裂纹倾斜角较大时，裂纹扩展属于稳定扩展；(5) 在单轴压缩作用下砂岩试件裂纹尖端A侧与裂纹尖端 B侧的裂纹扩展平均速度随裂纹倾斜角增加而降低。
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| 关 键 词： | 裂纹倾斜角 反翼裂纹 裂纹扩展速度 |
| 收稿时间： | 2011-04-22 |
A study of crack propagation measurement on sandstone with a single inclined flaw under uniaxial compression |
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| HSIEH Chi-tai,KUO Chuh-chih,WANG Chein-lee,CHEN Yue-gau.A study of crack propagation measurement on sandstone with a single inclined flaw under uniaxial compression[J].Rock and Soil Mechanics,2011,32(10):2917-2922. |
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| Authors: | HSIEH Chi-tai KUO Chuh-chih WANG Chein-lee CHEN Yue-gau |
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| Institution: | 1. Department of Geosciences, Taiwan University, Taipei, Taiwan 10617, China; 2. Department of Resources Engineering, Cheng Kung University, Tainan, Taiwan 70101, China |
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| Abstract: | Uniaxial compression test was conducted on sandstone with a single pre-existing flaw at various inclined angles.Employing crack propagation measuring techniques and relevant fracture criteria,some conclusions are drawn as follows.(1) The crack initiation angles of the sandstone specimen obtained from both theory and experiments increased with increasing flaw inclined angle.(2) Using a fracture criterion,the appearance of a anti-wing cracks at the tip of the crack of the sandstone specimen was attributed to ... |
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| Keywords: | flaw inclined angle anti-wing crack crack velocity |
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