METHOD OF COMPLEX DEVELOPMENT OF COAL DEPOSIT Russian patent published in 2014 - IPC E21B43/295 E21C41/18 

FIELD: mining.

SUBSTANCE: method of complex development of coal deposits comprises drilling the system of blast injection and gas removal holes that are hydraulically connected by the coal bed, the implementation through them of the hydrodynamic influence to form a zone of artificial cavities and cracks and fire impact on the coal bed to form a combustion source displaced from the blast injection hole towards the gas removal hole, obtaining crude producer gas, cooling it to a temperature below the condensation temperature of the components in the composition of the crude gas, and obtaining together with the purified gas other beneficial components. The attribute of the method is that in the space between the blast injection and the gas removal holes the series of feeding holes is drilled equidistant from each other from the surface into the zone of artificial cavities and cracks, into the combustion source first by blast injection, and then, as displacement of the combustion source and along the feeding holes the mineral dust is supplied, containing chemically active element, at the output of the gas removal hole the producer gas is separated, isolating from it the gaseous compounds of valuable chemical elements and converting them into free-running state for removal of valuable elements.

EFFECT: improving the efficiency of complex development of coal deposit.

1 dwg