On the Seismic Risk of Electric-Discharge Technology Employed for the Production of Piles Injected into Predrilled Holes

Questions concerning the similitude of seismic oscillations during an electric discharge in a hole and the detonation of explosives are examined; data are presented for field measurements; the parameters of oscillations generated during an electric discharge are compared with those based on existing standards for seismic-blast effects, and also with results obtained by a number of researchers. Selection of the characteristics of an electric “blast” to ensure seismic safety of the procedure under consideration is substantiated.