MINE DRAINAGE DURING DEVELOPMENT OF ANTICLINAL COAL DEPOSITS BY COMBINED METHOD Russian patent published in 2017 - IPC E02D19/00 E21F16/00 

FIELD: mining.

SUBSTANCE: mine drainage during development of anticlinal coal deposits by combined method, including sewage and drainage ditches of mine workings, drain sumps, pumping installations on the lower horizons of mines and sections, pumping stations with or without drain sumps on the upper mine horizons stories, disinfection of mine waters on the surface, connected into a single complex by a network of pipelines with stop valves. At the same time, inflows of underground mine waters enter the underground drain sumps of both wings of the coal anticlinal deposit located on the lower horizon of the last tried out formation in the syncline deposit mould, from the drainage ditches of the underground mine workings through a pre-treatment complex that serves to separate large and suspended particles up to 0.15 mm in size, immiscible liquids and floating objects with a density below water by mechanical means, and then pumped out to a sump located on the lower horizon section, where they are mixed with the mine inflow of open mine workings and pumping installations located on the sides of the ditch or floating pontoon, run out into a complex of deep water purification on the surface, from which, after purification and disinfection using mechanical, physical and chemical methods, flows into the surface drain sump and after sludge is discharged to the terrain or external reservoirs.

EFFECT: elimination of multistage, reducing of energy intensity and increasing of mine water degree of purification.

2 dwg