ON THE EXPEDIENCY OF INCREASING THE DEGREE OF DRILLING AND EXPLOSIVE LOOSENING IN THE QUARRY

Abstract

The article presents ideas about the expediency of increasing the degree of drilling and explosive loosening of rocks for mining conditions of open-pit mining of certain groups of ore and non-metallic minerals (PI). One of the prerequisites for the introduction of enhanced drilling and explosive loosening of rocks into the practice of mining is the involvement in the exploitation of relatively small ore and non-metallic deposits, which is partly due to the expansion of the mineral resource base of rare minerals and the progressive reduction in the balance reserves of ore deposits accompanied by a significant drop in the production capacity of existing quarries. It is possible to maintain production volumes at the same level for certain types of minerals when developing small deposits with small and medium-capacity quarries. Ore deposits developed by quarries of this type are usually located in regions remote from metallurgical centers and without developed infrastructure. Under these conditions, increasing the degree of drilling and blasting of ore mass in a quarry in order to eliminate expensive, time-consuming stages of large-scale crushing in the technological processes of ore preparation of raw materials may become one of the ways to increase the efficiency of mining production.