摘要
通过实验研究了不同加载方式下的煤岩破坏电磁辐射记忆效应特性;借助细观损伤力学和电磁动力学等理论,对煤岩内部结构损伤扩展及电磁辐射产生机制进行了分析。结果表明,煤岩破坏电磁辐射具有记忆效应特性,但记忆最大历史应力、纵向应变的能力明显优于记忆横向应变和体应变的能力,受载煤岩损伤破坏过程的不可逆性是煤岩破坏电磁辐射产生记忆效应的直接原因。
The characteristics of memory effect of electromagnetic radiation (EMR) during the fracture of coal or rock in different loaded ways are studied. By means of the theory of mesoscopic damage mechanics and electromagnetic dynamics, the mechanism of damage extend of coal or rock inside structure and producing EMR are studied. The results indicate that the EMR during the fracture of coal or rock has memory effect, the ability of remembering the most history stress and longitudinal strain is superior to remembering transverse strain and cubical strain, and the irreversibility of coal or rock damage fracture process is a direct reason of making memory effect of EMR during the fracture of coal or rock.
出处
《辽宁工程技术大学学报（自然科学版）》
EI
CAS
北大核心
2005年第2期153-156,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家杰出青年基金资助项目(59925411)
国家自然科学基金资助项目(50204010)
校博士基金资助项目(C2004-201)
建设部基金资助项目(04-2-015)
关键词
煤岩
电磁辐射
记忆效应
损伤
coal or rock
electromagnetic radiation
memory effect
damage
