Influence of parameters of the used equipment on conditions of application of the cyclic-flow technology complexes (CFT) in comparison with an excavator and automobile complex (EAC) is considered in this article. Dependences of quantitative change of indicators of efficiency of application (a relative discounted specific expenses, a specific metal consumption, a specific power consumption, a labour productivity, assignments for air contamination) on height of rock formation’s rising when using excavators with a volume of ladle from 5 to 20 cubic meters and dump trucks with a loading capacity from 45 to 130 tons in the CFT complexes are defined during the research. The preferable conditions of application of the CFT complexes with costs and without costs of a board rating when ore mining and overburden. As a result of realization of the research it is defined that in spite of the fact that using of more potent equipment influences on the quantitative value of indicators of effectiveness, the preferable conditions of application of the CFT complexes in comparison with EAC practically do not change.
This article is devoted to the placement of steeply inclined conveyors in quarries that develop deep-lying, steep-falling mineral deposits, which have small dimensions in terms of. The analysis of the application of cyclic-flow technology (CFT) with a belt conveyor is carried out. A review of known methods for the construction of traditional conveyor belts on the sides of the quarries. For quarries that are small in size, there is a restriction on the use of belt conveyors: the absence of straight sections for their location. In such quarries it is effective to use steeply inclined conveyors (with pressure tape, tubular, Pocketlift, etc.). The conveyor is positioned so that its tail section is mounted on a horizontal berm along the ledge of the pit side from the lying side of the mineral deposit. This placement eliminates the need for conservation of the pillar of rocks with part of the mineral. A technical and economic comparison of the options for using a steeply inclined conveyor with a clamping belt and an excavator-automobile complex (EAС) is carried out in relation to the conditions of a real quarry. Costs were calculated at heights of 400 and 470 meters with a change in the annual productivity of the complexes from 1 to 20 million tons / year. The dependences of changes in costs for the use of a complex of cyclic-flow technology and an excavator-automobile complex are established with marked changes in productivity and height of the rock mass.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.