DBPapers
DOI: 10.5593/sgem2017/12/S02.049

GEOTECHNICAL PROPERTIES OF MINE WASTE SEDIMENT IN IMPOUNDMENT

I. Slavik
Sunday 10 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-99-5 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 12, 381-388 pp, DOI: 10.5593/sgem2017/12/S02.049

ABSTRACT

Disposal of increasing waste production in mining is currently a serious problem of civilization. The most common way to dispose of mining waste is storing them on impoundments. The hydraulic transport is advantageous from the standpoint of service and perhaps economy too, but the geotechnical properties of the resulting sediment are poor especially when saturated. For the design and construction of safe dumps with minimum impact on the environment the knowledge of the geotechnical properties of sedimented mining waste plays a decisive role. The paper presents results of investigations into the physical and mechanical properties of mining waste sediment bedded on impoundment. The experimental measurements were verified by the following geotechnical properties of mining waste : grain size distribution, density, dry density, specific gravity, water content, porosity, shearing strength compressibility and permeability. The laboratory experiments were performed on mining waste sediment containing various amounts of grain diameter ɸ < 0,063 mm. The paper presents the variation in the physical and mechanical properties of mining waste to change the content of grain diameter ɸ < 0,063 mm.

Keywords: impoundment, mine waste, shearing strength, compressibility, permeability