Interconnection between parameters of rock samples electromagnetic signals and content of magnetite in the samples

International Scientific Conference on "Radiation-Thermal Effects and Processes in Inorganic Materials"

材料科学;物理学

Yavorovich, L.V.^1 ; Bespal'Ko, A.A.^1 ; Fedotov, P.I.^1 ; Popelyaev, A.I.^1

Problem Research Laboratory of Electronics, Dielectrics and Semiconductors, Nondestructive Testing Institute, Tomsk Polytechnic University, Lenin Avenue, 30, Tomsk

634050, Russia^1

关键词: Amplitude frequency;    Electromagnetic response;    Electromagnetic signals;    Maximum amplitude;    Mechanical energies;    Mineral composition;    Spectral components;    Ultimate strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/81/1/012055/pdf
DOI  :  10.1088/1757-899X/81/1/012055

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The paper describes the results of studies of electromagnetic response parameters of samples of bearing strata and ore rocks from the Tashtagol mine on acoustic effects. Patterns of changes in amplitude-frequency parameters of electromagnetic signals for rock samples with different content of magnetite are experimentally found. The conducted research shows that the maximum amplitudes of electromagnetic signal spectral components increases in samples of the same mineral composition with the reduction of their ultimate strength. This is caused by heterogeneities, and defective areas which contribute to active transformation of mechanical energy into electromagnetic energy. For rocks, which contain magnetite, the emissivity depends not only on heterogeneities and defective areas, but on the quantity of high-conductivity minerals in their composition.