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.
出处
《西安理工大学学报》
CAS
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)
关键词
岩石损伤过程
CT图像
密度损伤增量
rock damage process
CT image
density damage increment
density damage increment image
