Primary study on meso-damage propagation mechanism of cracked-sandstone using computerized tomography under uniaxial compression

REN Jian-xi; HUI Xing-tian

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Primary study on meso-damage propagation mechanism of cracked-sandstone using computerized tomography under uniaxial compression

更新时间：2026-06-25

- Primary study on meso-damage propagation mechanism of cracked-sandstone using computerized tomography under uniaxial compression
- Vol. 26, Issue S1期　刊出日, (2005)
- 作者机构：
  
  西安科技大学建筑与土木工程学院,西安,710054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU455
- Online First：15 December 2005，
  
  Published：2005
- 稿件说明：
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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]. 2005, 26(S1期　刊出日).
DOI：

REN Jian-xi, HUI Xing-tian. Primary study on meso-damage propagation mechanism of cracked-sandstone using computerized tomography under uniaxial compression[J]. 2005, 26(S1期　刊出日). DOI：

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。

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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西安科技大学建筑与土木工程学院

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200030)西安科技学院西安

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