Comparative Characterization of Overburden Material Vis-a-Vis Sand as an Alternative for Stowing in Underground Mines
Authors
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Department of Civil Engineering, Visvesvaraya National Institute of Technology (V.N.I.T.), Nagpur, 440 010 (MS) ,IN
Liladhar Dhote -
Department of Civil Engineering, Visvesvaraya National Institute of Technology (V.N.I.T.), Nagpur, 440 010 (MS) ,INAniruddha Ghare
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Department of Mining Engineering, Visvesvaraya National Institute of Technology (V.N.I.T.), Nagpur, 440 010 (MS) ,INIshwardas L. Muthreja
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Department of Mining Engineering, Visvesvaraya National Institute of Technology (V.N.I.T.), Nagpur, 440 010 (MS) ,INRajendra Yerpude
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The results discussed in this paper highlighted a comparative experimental study of overburden material (OBM) from mines and natural sand used as stowing/backfilling material. The study includes some significant parameters related with physical properties like particle size, dry unit weight, porosity, permeability etc. The change in pressure gradient on slurry transport behaviour of OBM and sand for increasing concentration range of 0.04, 0.10 and 0.30 by volume (Cv) for 37.5 mm circular pipe loop have been evaluated experimentally and compared. The linear expressions related with this pressure gradient for both slurry mixtures have been presented using multiple regression of data based on experimental observations. Water percolation characteristic after placement of slurry mixture at deposition stage for concentrations 0.25 and 0.50 by volume (Cv) also have been evaluated experimentally and compared.
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