受力岩石密度损伤增量及其数字图像  

The Density Damage Increment and Its Digital Image of Rock in Compression

作　　者：丁卫华[1] 仵彦卿[1] 蒲毅彬[1] 廖全荣[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室

出　　处：《西安理工大学学报》2000年第1期61-64,共4页Journal of Xi'an University of Technology

基　　金：中国科学院院长特别支持项目;冻土工程国家重点实验室资助项目!(9803)

摘　　要：用 CT图像定量分析岩石受力损伤破坏过程的难点 ,是难以知道岩石内部的绝对密度变化量。提出了密度损伤增量的新概念 ,推出了 CT数与密度损伤增量的定量关系式 ,并把 CT图像转换成密度损伤增量图像。通过与基于灰度变化的传统的 CT图像分析方法比较 ,说明密度损伤增量图像的优越性在于不仅可定量分析受力岩石的损伤破坏过程 。It is difficult to detect the absolute density of rock by CT image in quantitative analysis of rock damage process in compression. This paper presents a new concept concerning the density damage increment and deduces a quantitative relation formula between CT value and density damage increment, on the basis of which CT image is converted into density damage increment images. In compration with the traditional CT image analysis method based on the variation in gray scale, the advantages of the density damage increment image lie not only in the quantitative analysis of damage process of rock in compression but also in the definite physical sense of image itself.

关 键 词：岩石损伤过程 CT图像 密度损伤增量 

分 类 号：TU458.3[建筑科学—岩土工程]