【摘要】 对受载煤体变形破裂时电磁辐射(EME)的频谱特征进行了研究分析,研究结果表明,在受载煤体变形破裂过程中电磁辐射的频带很宽,其主频段随载荷的变化而发生变化,在受载初期,电磁辐射的主频带较低,电磁辐射主频带有时呈现先增高而后降低的趋势;在受载后期,电磁辐射的主频带较高,基本上表现为载荷越大,电磁辐射的主频段越高。更多还原

【Abstract】 Research and analysis were carried on frequency spectrum characteristics of loaded coal’s EME during deformation and fracture process. The research results show that the frequency zone is very wide during deformation and fracture process of loaded coal, the main frequency zone is changed with load change; at the initial stage of the load the main frequency zone of EME is low, and sometime it takes on the trend from raise to drop; at the later stage of the load the main frequency zone of EME is high, and its trend is that the larger the load is, the higher the main frequency zone is.更多还原