煤岩损伤研究的CT扫描技术发展现状及展望
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摘要
CT扫描技术因其无损伤、高分辨率、数字化等优点被广泛应用于煤岩损伤研究领域,为促进煤岩损伤理论研究的深入,从CT扫描技术着眼,基于前期文献调研,总结归纳了煤岩损伤领域该技术及装备的发展历程,回顾了利用CT扫描试验进行煤岩损伤表征的研究进展,主要包括:煤岩损伤程度的CT图像和CT数表征,损伤变量的CT数定义,以及满足工程实践的煤岩损伤本构方程的构建。在此基础上,分析了当前技术条件下利用CT扫描技术进行煤岩损伤研究所遇到的问题,指出提高CT图像时空分辨率、改进图像处理软件、开发新型图像重构算法、研发与CT系统相适应的复杂应力加载系统,将会对煤岩损伤研究的发展起到更大的作用。
CT Scanning Technology has been widely applied in the study of coal-rock damage because of its advantages of non-destructive monitoring,high resolution,and digitization. The purpose of this review is to promote theoretical research on coal-rock damages. Comprehensive literature reviews of CT Scanning Technology were conducted. Then the authors overviewed the development of CT technology and equipment in the field of coal-rock damage and summarized research progress on CT characterization of coal-rock damage. The focus of this review is on the CT characterization of degree on coal-rock damage,the definition of the damage variables based on the CT numbers,and the construction of the constitutive equation of coal-rock damage meeting the engineering practice. Problems and challenges encountered in the study of coal-rock damage using CT technology under current technical conditions were also analyzed. Furthermore,suggestions for further research were discussed. Improving the spatial and temporal resolution of CT images,improving image processing software,developing new image reconstruction algorithms,and developing complex stress loading systems that are compatible with CT systems will play a great role in the development of coal rock damage research.
CT Scanning Technology has been widely applied in the study of coal-rock damage because of its advantages of non-destructive monitoring,high resolution,and digitization. The purpose of this review is to promote theoretical research on coal-rock damages. Comprehensive literature reviews of CT Scanning Technology were conducted. Then the authors overviewed the development of CT technology and equipment in the field of coal-rock damage and summarized research progress on CT characterization of coal-rock damage. The focus of this review is on the CT characterization of degree on coal-rock damage,the definition of the damage variables based on the CT numbers,and the construction of the constitutive equation of coal-rock damage meeting the engineering practice. Problems and challenges encountered in the study of coal-rock damage using CT technology under current technical conditions were also analyzed. Furthermore,suggestions for further research were discussed. Improving the spatial and temporal resolution of CT images,improving image processing software,developing new image reconstruction algorithms,and developing complex stress loading systems that are compatible with CT systems will play a great role in the development of coal rock damage research.
引文
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