Current Conditions of Open Mining of Mineral Fields of Kazakhstan

The paper contains the review of issues of completeness and quality of mineral mining at the opencast mines and creation of geomechanical justification of systems with internal piling. Current mining production is characterized by the increase of share of open mining of mineral resources, the ratio of which in the world mineral mining is nearly 70%. Capacities of mining companies keep on growing, production processes are being intensified; depth and periods of operation of open mines are being increased. In these conditions, issues of increase of economic efficiency and environmental safety of mining operations become of more importance; one of the most radical ways of solution of this problem is the maximum use for location of overburden rock and production waste from the waste quarry area as a volume man-caused resource. The work contains the analytical review of the current state of open mining of mineral resources of Kazakhstan, sequence of mining operations with internal piling, sequence of formation and development of internal dump, optimal parameters of dumps (volume, height, stratification, angles of dips) as well as the stability of inactive pit edge before and after its loading with embankment.