The results of studies of magnetoacoustic emission (MAE) of magnetite ores samples taken from areas of high stress concentrations recorded during experimental works using electrical methods, as well as geological description of the microstructure of the samples, are given. It is shown that at Tashtagolsky mine, has a regular change of the parameters of the MAE of magnetite ores approaching, going further and within this zone. The authors believe that when an external elastic stress is applied the size of the areas of magnetization reversal decreases, which leads to more rigidly fixed domain boundaries and, consequently, to a decrease in signal of MAE. The experimental works previously carried out on separate samples of Magnitogorsk, Abakan, Novo-Peschanskii deposits in the laboratory under uniaxial pressure also showed a decrease in signal of MAE. Identified patterns of change of magnetoacoustic emission (and its lack of growth of the field maximum of the second phase) can serve as indicators of high stress concentration zones.
|Título traducido de la contribución||Magnetoacoustic emission of magnetite ores as an indicator of high stress concentration zones (on the example of Tashtagolski deposit)|
|Número de páginas||11|
|Publicación||Известия высших учебных заведений. Горный журнал|
|Estado||Published - 2014|
- 81.00.00 GENERAL AND COMPLEX PROBLEMS OF TECHNICAL AND APPLIED SCIENCES AND BRANCHES OF THE NATIONAL ECONOMY
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- VAK List