DETERMINATION OF THE MAXIMAL EXCESSIVE PRESSURE ON THE FRONT OF THE SHOCK AIR WAVE FOR EXPLOSIVE WORK CONDITIONS AT THE “VOSTOCHNY” CAREER OF JSC “MEDVEZHYA GORA”

Abstract

When conducting blasting operations in upland in
relation to the guarded objects and in a wide valley,
the impact of shock air waves (air blasts) on separate residential and industrial buildings and structures located nearby is possible. The paper considers the factors affecting the intensity of propagation of shock air waves. The maximum overpressure at the air-blast front near the apartment building and the school of Derbentskaya setlment was calculated using the method of B. N. Kutuzov for weak air-blast at positive and negative air temperatures and the method of M. A. Sadovsky for elongated blasthole
charges for blasting conditions in the “Vostochniy” quarry of JSC “Medvezhya gora” near a large concentration of people. Actual values of overpressure at the air-blast front from large-scale blasts in a quarry may differ depending on real climatic and meteorological conditions (temperature, atmospheric pressure, relative humidity, wind speed and
direction). The relevance of these studies is to ensure the industrial safety of blasting.