Medvedeva O.O., Kyrychko S.М., Nykyforova N.A., Koval N.V. Substantiation of the boundary of the tailings storage core during the storing of the cleaning rejects by hydraulic method

Деталі
Батьківська категорія: Геотехнічна механіка, 2019
Категорія: Геотехнічна механіка, 2019, № 146

Geoteh. meh. 2019, 146, 79-90

https://doi.org/10.1051/e3sconf/201910900056

SUBSTANTIATION OF THE BOUNDARY OF THE TAILINGS STORAGE CORE DURING THE STORING OF THE CLEANING REJECTS BY HYDRAULIC METHOD

1Medvedeva O.O., 1Kyrychko S.М., 2NykyforovaN.A.,1Koval N.V.

1Institute of Geotechnical Mechanics named by N.Poljakov of National Academy of Sciences of Ukraine, 2National Metallurgical Academy of Ukraine

UDK 622.648:62-17.004.4:622.17

Language: English

Abstract.

Annotation. The paper analyzes the current state of artificial tailings storages. These unique anthropogenic facilities may be considered both as the sources of environmental hazard and as promising anthropogenic deposits. The relevance of their development is shown. Decrease in the energy intensity of transportation and storing of mineral processing products, lowering of anthropogenic influence on environment, increase in environmental safety is an main problem for domestic ore-dressing and processing enterprises. Tailings storages basin ore-dressing and processing enterprises are huge reservoirs walled in dumps consisting of sludge and barren rock and impounded with pulp. These unique anthropogenic facilities may be considered both as the sources of environmental hazard and as promising anthropogenic deposits. Stored iron ore cleaning rejects predominately consist of quartz; low-grade quartz aggregates with hematite; magnetite. These TS are characterized by long operation life. Placing of mineral processing products occurs by layers one over another with becoming building-up of retaining dams. Stored iron ore cleaning rejects predominately consist of quartz; low-grade quartz aggregates with hematite; magnetite. Taking into account the existing technologies of tailings storing, it is substantiated that the future anthropogenic deposit is formed by hydraulicking layers of the same thickness, displaced relative to each other in the horizontal plane by the same amount. As a result of research dependences were obtained that allow estimation of the probable volumes of stored mineral processing products and available storage volume when building up dams, as well as justification of the location of the inner boundary between the core of the artificial storage and the body of the retaining prism. In the paper possible variants of formation of boundary layer between tailings storage core and retaining prism are offered. The intervals of change of coefficient of dusting surface length are determined for different variants of transition zone formation. The dependences of dusting surface length and slope inclination on hydraulicking layer number are obtained for determination of location of the boundary between transition zone and tailings storage core.

Keywords: enrichment waste repositories, hydraulicking layer, retaining dam, length dusting surface, the boundary of anthropogenic placer.

 

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About the authors

Medvedeva Olha Oleksiivna, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher in the Department of Geodynamic Systems and Vibration Technologies, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її. .

Kyrychko Serhii Mykolaiovich, Candidate of Technical Sciences (Ph.D.), Researcher in the Department of Geodynamic Systems and Vibration Technologies, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її. .

NykyforovaNinaAnatoliivna,Candidate of Technical Sciences (Ph.D.), Associate Professor at the National Metallurgical Academy of Ukraine, National Metallurgical Academy of Ukraine (NMeTAU) under the Ministry of Education and Science of Ukraine, Dnipro, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її.

Koval Nataliia Vasylivna, Master of Science, Junior Researcher in the Department of Geodynamic Systems and Vibration Technologies, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її. .