CT analyses of brittle materials under hydraulic Pressure and uniaxial compression

JIAN Hao; LI Shu-cai; ZHU Wei-shen; QI Liang-feng

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CT analyses of brittle materials under hydraulic Pressure and uniaxial compression

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- CT analyses of brittle materials under hydraulic Pressure and uniaxial compression
- Vol. 23, Issue 5, (2002)
- 作者机构：
  
  1. 中科院武汉岩土力学研究所岩土力学重点实验室,湖北,武汉,430071
  2. 中科院冻土工程国家重点实验室,甘肃,兰州,730000
  3. 西安建筑科技大学建工系,陕西,西安,710055
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU459+.9
- Online First：04 September 2016，
  
  Published：2002
- 稿件说明：
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JIAN Hao, LI Shu-cai, ZHU Wei-shen, et al. CT analyses of brittle materials under hydraulic Pressure and uniaxial compression[J]. 2002, 23(5).
DOI：

JIAN Hao, LI Shu-cai, ZHU Wei-shen, et al. CT analyses of brittle materials under hydraulic Pressure and uniaxial compression[J]. 2002, 23(5). DOI：

摘要

采用CT机配套的自制专用注水加载装置，对含裂隙水压的单裂纹试件进行了单轴压缩破坏的CT（Computerized Tomography）实时试验，对试件被压密→新损伤区产生→裂纹扩展的全过程进行了模拟，得到了各阶段清晰的CT图象及CT数。通过分析，提出了类节理岩体脆性材料的损伤演化率和损伤门槛值概念，并对水压的影响进行了探讨，从细观和三维上初步掌握了类节理岩体脆性材料的损伤演化特性。

Abstract

Using the special purpose loading equipment made by authors corresponding to CT machine

the computerized tomography (CT) real-time testing of specimen’s failure with single fracture and hydraulic pressure under uniaxial compression has been made. The whole procession of specimen being compressed

new damage coming up and the failure process of hydraulic fracture of rock are simulated .At different axial pressure

clear CT images and CT values of different parts are obtained .With studying the data of test

the threshold value of damage and damage propagation rate are defined; and some discussion of hydraulic pressure’s effect is made. The damage and fracture propagation law of jointed rock has been obtained from meso-scale and three dimensions.

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