METHOD FOR FORMING A VENTILATION NETWORK FOR REGULATING THE THERMAL REGIME OF ALLUVIAL MINES IN THE CRYOLITHOZONE Russian patent published in 2021 - IPC E21F1/00 E21F3/00 

FIELD: mining industry.

SUBSTANCE: invention relates to the mining industry and can be used to form a ventilation network and regulate the thermal regime (RTR) of year-round placer mines in the cryolithozone. A method for forming a ventilation network for regulating the thermal regime at placer mines in the cryolithozone, including conducting heat-accumulating workings (HAW) on concealed ice and ice-rich rocks, using mine opening and ventilation wells drilled from the surface. In this case, the HAW horizontal line is arranged from the ventilation inclined shaft 1 through concealed ice and ice-rich silt above the roof level of the productive sand formation to the boundary of the mine field 3, after which the boundary HAW 5 is outlined along the contour of the mine field 3 above the ventilation drift 4, equal to the length of the windway 4, in which due to heat exchange processes with the surface of the workings, the ventilation jet is cooled in the warm season, and in winter periods, the normalization of cold air to the temperature of the rock mass is observed. Then, ventilation wells 7 are arranged, connecting the HAW 5 with the windway 4, through which the mining face is ventilated and, as the mine field is worked out, the stope ores 8 are ventilated using alternating schemes using the sectional method, namely, by injecting the ventilation jet with the HAW 2 through the ventilation wells 7 into the mining faces and injecting the ventilation jet with the HAW 2 into the exhaust chambers 9 limited by jumpers 11 with further supply through the ventilation pipelines 10 into the mining faces. Exhaust air is removed in the direction of the general-shaft jet movement along the transport inclined trunk 12 to the surface.

EFFECT: provision of directional regulation of the thermal regime of alluvial mines of the cryolithozone using heat exchange workings during the entire service life of the mine.

1 cl, 1 dwg