UNDERGROUND ENERGY COMPLEX Russian patent published in 2006 - IPC F23B99/00 

FIELD: generation of electric power by off-standard method in underground mining plants.

SUBSTANCE: proposed underground energy complex includes boiler in whose furnace coal is burnt and turbo-electro-generator package to which superheated steam is delivered from boiler. Turbo-electro-generator package and boiler are located directly in underground working made in rock beyond zone of bed from which coal is burnt. This working is engageable with horizontal working interconnecting two shafts; one shaft which is used for evacuation of gas is provided with heat exchange apparatus connected with water conduit by means of pump; said water conduit runs to reservoir installed on raised area relative to surface with cooling apparatus. Running from cooling apparatus are passages at spaced vertical location in other shaft; they are connected to water receiver by means of water conduit. Water receiver is provided with unit for decomposition of mine water into oxygen and hydrogen by electrolysis method; hydrogen is delivered to boiler furnace with the aid of meter and pipe line.

EFFECT: enhanced efficiency.

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