METHOD OF HYDRAULIC FILLING OF WORKED UP CAVITIES

摘要

FIELD: coal industry, environmental engineering. SUBSTANCE: when filling cavities produced in the process of the removal of coal out of its layer reserves where the layers are plane or gently sloping (0-25 deg), a pulp and a coagulant such as polyamide are simultaneously fed to a most distanced from the pool section of the bin and then a threshold-like supply of the pulp into the close-to-pool sections is successively developed until a water-permeable drain layer of a filling material is formed. EFFECT: achieved ecologically pure filling of empty cavities. 2 cl, 1 dwg