DETERMINATION PARAMETERS OF THE MINING HAULAGE COMPLEX AT THE DEVELOPMENT OF FLOODED PLACER DEPOSITS BY DREDGERS
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2018, Vol 1, Issue 113
Abstract
Purpose. The purpose of the article is to establish the parameters of the mining haulage complex at the development of flooded deposits by dredging, which will determine the technical and economic feasibility of the haulage on techno-logical scheme at the mining minerals using water-reducing wells, to the scheme with the use of dredgers on watered seams. Methodology. A method for determining the number of dredgers for the mining titanium-zirconium ores has been developed, which takes into account the definition of the dredger productivity on the rock mass, according to the density of the hydro-mixture and the content of water in the pulp, which directly depends on the porosity of the rocks. Results. The results of the research allow to establish that in the mining pit of Motronivsky MPP at the changing the porosity of the sandy-clay mixture in 2.7 times from 0,3 to 0,8 relative unit the technical productivity of the dredger will decrease in 3.2 times from 184 to 59 m3/h, while the required amount of extraction dredges will increase in 3.5 times from 2 to 7 units. Originality. The dependence of sandy-clay mixture porosity on the dredger productivity has been established. The relationship between the sandy-clay mixture porosity and the required number of dredgers for a re-quired pit output has been revealed. The developed method allows us to establish the required number of dredgers, tak-ing into account the effect of soil porosity on the dredger productivity, since the sand-clay mixture in which the titani-um-zirconium ores positioned has a range of porosity from 0,3 to 0,8 relative unit. Practical value. The carry out re-searches allowed establishing that mining minerals in the pit of Motronovsky MPP the average indicator of porosity of the sand-clay mixture is 0.38 relative unit, and for the maintenance of the production capacity of the open-cast mine are required three dredgers ZMD-200-50l. Conclusions. It was established that the transition of draglines to dredgers dur-ing mining minerals on a flooded placer deposits will allow to decrease the length of pipelines from 4.8 to 4 km, during the initial period of pit mining, and from 15 to 9.2 km before the pit closure, due to refuse of dewatering wells. Refer-ences 10, tables 2, figures 3.
Authors and Affiliations
B. Sobko, О. Lozhnikov
Keywords
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- EP ID EP660720
- DOI 10.30929/1995-0519.2018.6.51-57
- Views 84
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