At the moment, Sibanthracite has installed a polymer net on two dumps in the Novosibirsk and Kemerovo regions.
Polymer mesh is made of polyester threads and impregnated with polyvinyl chloride. It is laid on the surface of the tier and slope of the dump, thus, the dump area and the upper tiers of the rock are connected into a single structure. The cells of the polymer mesh reliably hold the rock, eliminating the possibility of its displacement horizontally and vertically.
First, rock from the overburden face without large-block pieces with a thickness of 1 – 2 m is laid on the polymer mesh, the first layer of full-fledged rock is placed on it, then dumping occurs as usual. A new layer of mesh is laid on the newly formed tier.
According to the calculations of specialists of ‘Sibanthracite’, the bearing capacity of the mesh allows for a 1 m2 stack of up to 4000 t of rock.
“One of the most important priorities of the Sibanthracite Group is the safety of industrial facilities and territories. Including, from year to year, we continue to carry out a wide range of measures aimed at strengthening the emerging dumps of mining operations. These events are not a single year's work. The introduction of the new technology will provide additional stability of the dumps,” said Alexander Petrov, Technical Director of the Sibanthracite Group.
The idea of using this technology belongs to the technical directorate of the Sibanthracite Group and is used only at the enterprises of the company. A decision has already been made to use polymer mesh at all dumps of the Sibanthracite Group enterprises.
Read the article online at: https://www.worldcoal.com/coal/09122021/sibanthracite-uses-new-technology-to-strengthen-mining-dumps/
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