FIELD: mining operation.
SUBSTANCE: method of prediction of explosiveness of deposited dust in gassy mines is proposed, comprising determining in the coal of volatile matter content and mineral impurities in it, measuring the amount of dust deposited in mines and determining the lower limit of its explosiveness. And in the coal bed the areas with inclusions of pyrite are determined, and in the process of coal-face operation in the working with outlet air flow the air flow rate is measured, the content of methane and hydrogen sulphide in it. According to the content of hydrogen sulphide generated during the thermal decomposition of pyrite dust, the lower explosiveness limit of the hybrid mixture is determined.
EFFECT: increase in reliability of prediction of explosiveness of the deposited dust in mines.
