In connection with a gradual extraction of ore areas in a valley, with the aim of support of annual output of the Koashva open-pit mine, a necessity arises in involving in the mining of near-ore bank reserves, located in the north-west bench of open-pit mine. For uncovering and mining of near-ore bank reserves it is necessary to assess the geodynamic and geomechanical conditions for support of the safe mining operations. The article describes the solution of this problem by means of software product 3DEC of Itasca firm.
The choice of mining methods is one of the most important phases at the designing stage and it has an influence on the economic efficiency of mineral deposit mining. Consideration is given to the order of selection of mining methods on the example of near-ore bank reserves of the Koashva deposit. Upon selecting a mining method by constant and variable factors, the selected mining methods are compared by their technical and economic indices, and so the field of application of each mining method is identified.