ELECTRIC DISCHARGE SHOCK BREAKDOWN METHOD AND APPARATUS THEREFOR

摘要

An electric discharge shock wave generating method and an apparatus therefor, which can break down a large rock and concrete in a short time. The electric discharge shock breakdown method comprises first having positive and negative electrodes (3a, 3b) approach a portion being broken down, the portion being surrounded by a liquid atmosphere or an object being (4) broken down being rendered a liquid atmosphere, and subsequently applying a high voltage pulse between the positive and negative electrodes (3a, 3b) to generate an electric discharge therebetween so that the portion being broken down is broken down by shock waves generated by the electric discharge. In the method, an atmosphere with bubbles is formed in a liquid between the positive and negative electrodes (3a, 3b) before the electric discharge.