EXPLORATION OF MINING TECHNOLOGY FOR A GOLD ORE DEPOSIT WITH VARIOUS CONDITIONS OF ORE BODIES OCCURRENCE

Abstract

As a result of the revision of the conditions of the Vetrenskoye gold deposit, involving into the exploitation of the reserves of the lower and earlier worked out upper floors is becoming actual. An important feature of the development of this field is the
need to refine ore bodies on the border with previously used reserves, as well as a variety of mining-geological and mining-technical conditions, due to a large number of separate ore bodies with insignificant reserves. A high level of impoverishment, because of the complex morphology of ore bodies, their small thickness, uncertainty and tortuosity of contacts of gold-bearing and enclosing rocks (the design value of impoverishment is 28% and the actual impoverishment is 48%). In order to maintain
the production capacity of the underground mine and to optimize the extraction parameters, a set of technological solutions for the preparation and cleaning excavation has been developed. Variants of development systems for various mining-and-geological conditions, allowing to shift from one system to another through a preparation scheme, have been designed. Standard losses and impoverishment for the development systems and, in general, for the mine have been calculated.