摘要
为了对岩石断口进行细观分析,以大理岩为例,借助MTS岩石伺服试验系统,进行单轴加载实验直至破坏,获取了四类不同破坏载荷下大理岩断口试件。运用扫描电镜拍摄了岩石破坏断口裂纹的细观结构图像,综合应用图像分析技术和分形几何理论,编制了Matlab程序,计算出细观结构图像的分形维数,并简要分析了大理岩细观结构具有的分形特征。结果表明:大理岩表现出良好的自相似性;其断口的分形维数与破坏载荷之间具有一定的相关性。
To give the microscopic analysis of rock fracture,marble was used in the uniaxial loading experiments for tbe rock failure with the help of MTS test system. The marble specimen under four different fracture specimens was obtained. Then rock crack microstructure image was produced by the scanning electron microscope and the matlab program was compiled according to the application of image analysis technology and the fractal geometry theory. Finally, the fractal dimension mierostructure of image was calculated,and a brief analysis was made on fraetal characteristics of microstructure with the marble. The results show that good self-similarity is found in marble and there are certain correlation between fractal dimension and the failure load of fracture.
出处
《山东科技大学学报（自然科学版）》
CAS
2014年第2期58-62,共5页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家重点基础研究发展计划("973")项目(2010CB226805-02)
关键词
单轴压缩
岩石断口
扫描电镜图像
细观形貌
分形维数
uniaxial compression
rock crack
SEM image
microscopic morphology
fractal dimension
