Review Article Open Access

ON DUST AND GAS GENERATION UPON MULTIPLE BLASTS IN OPEN-PIT MINES

Abstract

This article discusses the influence of explosive charge diameter and type of explosive substance on generation of fine dust. Dependences of dust generation intensity for various size fractions and dust concentration upon blasting for operation conditions of open-pit mines of building materials. Calculation procedures of dust and gas pollutions upon blasting operations are reviewed and analyzed. Sample calculation of dust and gas pollution according to the proposed procedure is given with consideration of gas dynamic processes in blasthole charging pocket, blasting and drilling parameters, properties of explosive substances and rock massif, including results of commercial approbation in open-pit mines of building materials. Results of commercial experiment are given, the known calculation procedures of dust and gas emissions upon blasting and drilling operations in open-pit mines are analyzed.

GENNADY PETROVICH PARAMONOV AND VLADIMIR NIKOLAYEVICH KOVALEVSKYI

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