Electrohydraulic drilling of rocks and research of processes of an erosion of metal part of electrode system of the drill

Abstract

The article considers the advantages of electro-hydraulic method of drilling and the process of wear of drill electrodes during its operation. The processes of erosion at the metal part of electrode system of the electrohydraulic drill have been studied; the dependence of the electrode wear rate on the number of pulses has been established. On the basis of experimental studies the authors have established bounds of electro-physical parameters of the method, within which the intensive destruction of solid rocks starts. Quantitative dependencies characterizing the beginning of the process of destruction of rocks of different thickness depending on the number and energy discharges have been defined.