Abstract
The article presents results of theoretical and experimental studies and industrial use of electric-discharge method of destruction of rocks and metal. The physical processes that occur in a plasma channel of electric discharge, the list of factors that occur in the liquid during electropulse treatment, the dynamics of the emergence and development of the plasma channel between the electrodes were described. The hydrodynamic phenomena in the liquid, accompanying the electrical discharge were described. The mathematical model was developed, the calculations of hydrodynamic parameters during electrical discharge in a small volume, calculating the ultimate stress in the rocks and the value of pressure necessary for their destruction were determined. The laboratory studies of sample destruction of rocks to study structural changes from the action of the plasma channel were carried out. The various uses of electric-discharge technologies in mining and metallurgy were given, as well as the results of practical implementation of the method in industrial conditions.
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