| 裂隙岩石单轴压缩损伤扩展细观机理CT分析初探 |
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| 引用本文： | 任建喜,惠兴田.裂隙岩石单轴压缩损伤扩展细观机理CT分析初探[J].岩土力学,2005,26(Z1):48-52. |
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| 作者姓名： | 任建喜 惠兴田 |
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| 作者单位： | [1]西安科技大学建筑与土木工程学院 [2]西安科技大学建筑与土木工程学院 西安 |
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| 基金项目： | 国家自然科学基金(No.10202019,No.10172057)，陕西省教育厅自然科学专项基金(No.02JK126,No.04JK222)联合资助。 |
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| 摘 要： | 完成了单一裂纹的裂隙砂岩单轴压缩条件下细观损伤破坏机理CT实时试验,得到了裂纹萌生、发展、宏观裂纹形成、破坏等各阶段的CT图像、CT数和CT数方差。结果表明,与无预制裂隙的岩石试样相比,已有预制裂纹对新的裂纹的起裂位置及贯通性宏观破坏裂纹的形成具有重要影响,预制裂纹的存在导致裂隙砂岩试样的扩容量大于完整试样破坏时的扩容量。
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| 关 键 词： | 裂隙岩石 损伤扩展 CT试验 |
| 收稿时间： | 2005-01-24 |
Primary study on meso-damage propagation mechanism of cracked-sandstone using computerized tomography under uniaxial compression |
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| REN Jian-xi,HUI Xing-tian.Primary study on meso-damage propagation mechanism of cracked-sandstone using computerized tomography under uniaxial compression[J].Rock and Soil Mechanics,2005,26(Z1):48-52. |
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| Authors: | REN Jian-xi HUI Xing-tian |
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| Institution: | School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China |
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| Abstract: | The CT real time testing on meso-damage propagation mechanism of cracked-sandstone containing one crack under uniaxial compression loading using the CT loading system application in rock and soil media has been accomplished. The CT images, CT number and variance of CT number in different stages such as crack birthing, developing, macro-crack birthing and sample failure are contained. Comparison to the noncracked-rock sample, it shows that the pre-crack can seriously affect the location of new crack birthing and the formation of connectivity macro-crack. Because of the pre-cracked existing, the volume expansion values of the cracked-rock sample under uniaxial compression are large than the noncracked-rock sample. |
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| Keywords: | cracked-rock damage propagation CT testing |
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