METHOD OF OPEN WORKING OF MINERALS WITH GROUNDWATER INFLUX Russian patent published in 2014 - IPC E21C41/26 

FIELD: mining.

SUBSTANCE: proposed method comprises erection of sludge pond, opening and mining of quarry field. At quarry nonworking board bench located on the side of maximum ground water mark in quarry field contour erected is buttress anti-filtration shield, under the level of ground waters beyond the boundaries the prism of possible collapse of underlying bench, over the entire length of ground water layer. Note here that buttress shield height is defined from mathematical relationship.

EFFECT: lower capital and operating costs.

3 dwg