REDUCTION OF COAL LOSES OF SEAM SERIES MINING AT VORKUTSKOE DEPOSIT
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On the coal mines of “Vorkutaugol” company the problem of long shadow high stress zones formation is analyzed. This problem caused by complicated mine layout, which is led to increase of rock pressure on the boundaries of mining panel. The detailed analysis of remaining reserves of coal deposit bottom part, considering the estimation of losses is conducted; the influence of high rock pressure zones from the pillars of lower seam on the mining operations on upper seam is studied. With this, the possibility of shadow stress zones reduction by the process of widening the undermining zones is reviewed. Three main parts of Vorkutskoye deposit are marked out: one part is on the “Komsomolskaya” mine and two parts on the “Zapolyarnaya-2” mine. The losses on the boundaries of mining panels are 13-22 % from total reserves in these three parts of deposit. The widening of undermining areas is especially relevant topic due to the big losses of coal. The technological scheme is designed on the basis of world experience and regulatory documents. This technological scheme allows to increase the extraction coefficient of coal from 0.75 to 0.9 without principal changes in ventilation and transport schemes and without additional mining equipment.
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Date submitted: 2020-06-29
Date accepted: 2020-07-30
Date published: 2020-07-31
Copyright (c) 2020 Валерий Валерьевич Ярошенко, Олег Иванович Казанин
This work is licensed under a Creative Commons Attribution 4.0 International License.