METHOD FOR SEPARATELY MINING AND TRANSPORTING THICK COAL SEAM WITH GANGUE, AND BACKFILLING GOAF WITH GANGUE Russian patent published in 2018 - IPC E21C41/16 E21C41/18 E21F15/00 E21D23/00 

FIELD: mining.

SUBSTANCE: invention relates to mining. Method for separately mining and transporting thick coal seams with gangue and backfilling a goaf with gangue comprises tunneling transportation roadway (1) and track roadway (2) in parallel in the shaft. Connecting the transport roadway and the track roadway to form an open-off cut. Employing comprehensive mechanical solid filling and coal mining technology for coal recovery and goaf backfilling during coal mining. Mining the coal seam and the gangue seam in layers from top to bottom in sequence. Transporting the coal down to the transportation roadway via front scraping conveyor (10), and transporting the coal out of a working face via belt conveyor (5) in the transportation roadway. During gangue seam mining, reversing the front scraping conveyor to transport the gangue to the track roadway, transporting the gangue to goaf (14) via reverse gangue loader (6) and feeding scraper (7) in the track roadway, and backfilling the gangue to goaf (14) via backfill scraping conveyor (12).

EFFECT: method improves quality and degree of coal mining.

1 cl, 7 dwg