RU92009338A - METHOD OF DRAINING EXTRACTIVE FIELDS - Google Patents

Claims (1)

The method of drainage of excavation fields belongs to the mining industry and can be used in underground mining of mineral resources with stable watered rocks of the main roof with low filtration properties. The invention provides improved efficiency, accelerated drainage and the elimination or significant reduction of the risk of groundwater in the mine workings. The essence of the invention: in the excavation field, water-reducing wells are constructed from the surface and preliminary drainage is carried out. Then pass the mine workings and cut the excavation pillars at an angle to the longitudinal axes of the drilled cutting drainage column, one of its delineated workings carried out along the projected split workings. In parallel, another contouring development is carried out with drainage production with a lag of the value of the zone of the reference pressure from the lava of the worked out drainage extraction column. Rising wells are drilled from the drainage hole into the drainage cavity. Then, in addition to or leaving the rear pillar from the spent drainage extraction column, cut openings are cut.