Authors: Yu.A. Masaev, V.Yu. Masaev

Title of the article: The influence of the heat of explosion used explosives on the final results

Year: 2020, Issue: 2, Pages: 18-23

Branch of knowledge: 25.00.20 Geomechanics, rock destruction by explosion, mine aerogasdynamics and mining thermal physics

Index UDK: 541.126.550.834

DOI: 10.26730/1999-4125-2020-2-18-23

Abstract: Explosives are used not only for mining, but also for a number of other industrial needs. And their use, along with positive factors, also leads to a number of negative ones – pollution of the atmosphere, violation of the ecology of the area, destruction of nearby structures, provoking earthquakes. When mining with an explosive method, the main indicators of the quality of the explosion are: uniform crushing of the rock mass without oversized pieces and the smallest fractions. Small drop-off of the exploded mass; good separation of rock to the depth of a hole or well; high-quality delineation of the face and not provoking various geodynamic manifestations. For each type of blasting, a passport of drilling and blasting operations is calculated and compiled, and the main parameters are determined: the depth of boreholes or wells and their number; the mass of the charge in the borehole or well. And to ensure them, it is necessary to use certain organizational and technical measures. Studies have shown that the explosion results do not always coincide with the calculated values and one of the main reasons is that the heat of the explosion of the used explosives, which is a measure of the potential energy reserve of EXPLOSIVES, is not taken into account. during the research, two types of explosives with different explosion heat were detonated under identical conditions and the results of the explosion were compared. The influence of heat on the change in the number and depth of boreholes, the quality of rock destruction, the volume of gaseous products formed, and in the case of mass explosions in open works and on the parameters of seismic waves was established.

Key words: explosive substance heat of explosion specific explosive flow rate gaseous products of explosion seismic waves

Receiving date: 31.01.2020

Publication date: 24.07.2020

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