METHOD FOR FILLING OF MINED-OUT SPACE DURING DEVELOPMENT OF GENTLY SLOPING BEDS WITH LONG PILLARS Russian patent published in 2020 - IPC E21C41/16 E21D19/02 E21F15/02 

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used in development of gently sloping potassium-magnesium and coal beds by mining faces equipped with mechanized complexes. Method solves problem of improving safety of mining operations under conditions of underwater protection of formation due to exclusion of formation of water-conducting channels between formation and water-bearing horizon by formation in lined space of lavas of stowing massifs of hydraulic setting mixture arranged in reservoirs of cylindrical shape, made of waterproofing material. When preparing the pole, advanced advance of the required number of steep gates is performed within the extraction section. Filling pipelines are installed in conveyor, ventilation and filling drifts for delivery of hardening water-laying mixture into reservoirs located in lava work-out area. Laying pipelines are dismantled as far as lava moves. Reservoirs with hardening hydraulic-setting mixture are arranged in worked-out space in the form of strips perpendicular to face of lava.

EFFECT: application of hydraulic setting mixture allows to provide required strength characteristics of backfilling massifs, and placement of tab in waterproofing reservoirs allows to ensure preservation of specified shape at their filling to height of worked-out space.

1 cl, 7 dwg, 1 tbl