The object of research of the present work is the tailing dump “Lebyazhie”, located on the territory of Norilsk industrial region (north of Siberia). The exploitation of the disposal area has begun since 1983 with the purpose of warehousing of tails from concentrating mill and organization of system of turnaround water supply. Today the problem of its capacity increasing is very important. One of the ways of increase in capacity of the tailing dump is replacement of a slurry collecting slag prism by the filter screen from a geotextiles. It allows increasing usable tailing dump volume approximately by 8-10 %, and lowering the metallurgical slag input and labour coefficient. The given method was tested and has shown its efficiency.
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