摘要
在单轴压缩条件下,利用CT技术实时观测岩石试样内部微裂纹的萌生、扩展直至贯通的细观破坏过程,通过数字处理技术对得到的CT图像进行阈值分割并利用计盒维数法得到图像裂纹的分形维数,分析外部荷载、裂纹扩展和分形维数之间的关系。结果表明:在单轴压缩条件下,分形维数可以作为岩石材料细观破损程度的定量参数。
Under the uniaxial compression conditio and growth until damaged in the rock samples is are processed though the threshold segmentation n, the process of the micro cracks, initiation observed though using CT. The CT images by Matlab and the fractal dimension of the images are achieved. The relationship of loads, microcracks and the fractal dimension are analysed. The results show that, under the uniaxial compression condition, the fractal dimension could be the quantitative parameter of rock materials, extent of damage.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2015年第3期124-127,共4页
Journal of Hebei Agricultural University
基金
河北省教育厅重点项目(ZD2014073)
河北农业大学理工基金项目(LG201403)
关键词
CT
分形维数
细观破坏
图像处理
CT
fractal dimension
meso damaged
image processing