The gain to the pit on account of degassing and utilization of the methane is 120,000 rubles per annum, of which 53,000 are due to the gain in coal output and 67,000 to the utilization of the methane.
made it possible to optimize the parameters of the technology of formation of the ice mass under conditions of a deposit [2] being worked in the permafrost zone: cooling of the mine air -15~ air speed 4-5 m/sec; thickness of the layer being frozen during one cycle 0.2 m; water temperature before filling into the chamber +0.5 to 1.0~
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