THE INFLUENCE OF RELIEF ON THE SHOCK-AIR WAVE EFFECT DURING BLASTING OPERATIONS IN A QUARRY

Abstract

The heterogeneity of the relief of the surface of the location of the main mining structures during blasting leads to an increase in the impact of the air-blast effect on the protected objects adjacent to the quarry field. A correction is proposed that takes into account the volume of the disturbance actually covered at a distance (r, m) in comparison with the disturbance covered by it due to the relief inhomogeneity along the path of air-blast propagation. The ratios of corrections for the relief are presented depending on the type of heterogeneity and its location relative to the protected object. Research methods: analytical estimates and experimental studies of air-blast disturbances of explosions of contact and buried charges in open-cast mining; geometric modeling of the actually covered volume of perturbation on the path of air-blast propagation due to the inhomogeneity of the relief during the explosion of an additional equivalent charge.