METHOD OF WELL EXTRACTION OF COAL AND GAS FROM FORMATIONS PRONE TO GAS AND GEODYNAMIC PHENOMENA

摘要

FIELD: mining.;SUBSTANCE: method consists in mining of the deposit with wells, creation of a cavity, and destruction and change-over of mineral product to hydraulic mixture. Mixture is mixed and hollow rock is deposited at the bottom of the formed cavity; coal-water suspension is pumped out to the surface and transported via pipes to the consumer. In order to destruct mineral product, high methane content of coal beds is used; at that, methane content in the formed cavity is controlled; and when the most explosion hazardous concentration of methane, which is equal to 10%, is achieved in that cavity, explosion is initiated. After mineral product is delivered to the consumer, the whole cycle of works is repeated. In order to prevent methane ignition, its concentration is reduced to explosion hazardous one by releasing methane via wells to the surface to consumers.;EFFECT: invention allows increasing the safety and efficiency of mine works owing to using internal energy of mine rock massif.