| 基于CT图像的岩石破裂过程裂纹分形特征分析 |
| |
| 引用本文： | 刘京红,姜耀东,赵毅鑫,祝捷.基于CT图像的岩石破裂过程裂纹分形特征分析[J].河北农业大学学报,2011,34(4):104-107. |
| |
| 作者姓名： | 刘京红 姜耀东 赵毅鑫 祝捷 |
| |
| 作者单位： | 1. 河北农业大学城乡建设学院,河北保定071001;中国矿业大学力学与建筑工程学院,北京100083
2. 中国矿业大学力学与建筑工程学院,北京100083;中国矿业大学煤炭资源与安全开采国家重点实验室,北京100083 |
| |
| 基金项目： | 国家重点基础研究发展规划(973)项目，河北农业大学非生命学科与新兴学科科研发展基金 |
| |
| 摘 要： | 岩石材料存在不同阶次随机分布的微观孔隙和裂纹,其受载后的宏观断裂失稳和破坏与内部微裂纹的分布以及微裂纹的产生、扩展和贯通有密切关系.通过对岩石CT图像中各点材料进行分析,清晰地看到岩石材料中孔洞及裂纹区域的大小分布随应力的变化过程.利用分形维数对裂纹扩展至破裂过程进行分析,揭示岩石裂纹从萌生、扩展到贯通的细观破损机理....
|
| 关 键 词： | 分形维数 细观力学 CT图像 岩石 裂纹扩展 |
Fractal characteristic analysis of rock breakage process based on CT test images |
| |
| LIU Jing-hong,JIANG Yao-dong,ZHAO Yi-xin,ZHU Jie.Fractal characteristic analysis of rock breakage process based on CT test images[J].Journal of Agricultural University of Hebei,2011,34(4):104-107. |
| |
| Authors: | LIU Jing-hong JIANG Yao-dong ZHAO Yi-xin ZHU Jie |
| |
| Institution: | 2,3(1.College of Urban and Rural Construction,Agricultural University of Hebei,Baoding 071001,China;2.School of Mechanics & Civil Engineering,China University of Mining & Technology,Beijing 100083,China;3.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Beijing 100083,China) |
| |
| Abstract: | The rock material features random distribution’s microscopic hole and cracks.The rock macroscopic breaks are closely related to the internal microcrack’s distribution as well as their growth and opening.The change of the rock material’s internal hole and the slit region size distribution along with the stress change process were clearly observed through analysis of the rock CT images.The fractal dimension was used to analyze the fracture growth to the rupture process of rock.The rock breakage mechanism was revealed through analysis of the creation,growth and opening of rock crack.This analysis introduces the microscopic hole and the crack distribution to the mesomechanic model accurately and builds the foundation to connect the rock material’s internal structure and the macroscopic mechanical properties. |
| |
| Keywords: | fractal dimension mesomechanics CT test images rock crack evolution |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
