METHOD OF UNDERGROUND DEVELOPMENT OF MINERAL DEPOSITS Russian patent published in 2020 - IPC E21C41/16 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and can be used in underground development of reservoir deposits for reduction of mineral losses, costs for ventilation, driving and maintenance of development workings. Width of inter-column pillar is greater than the maximum width of inter-column pillar, if exceeded, stability of ventilation development of the worked-out column is provided. Between the pillar of the pillar between the conveyor opening and the transport mine working there is an auxiliary mine working. Inter-column pillar is worked out in line with the lava, with the length of lava is taken equal to the distance between the conveyor development of the worked column and worked space. Distance between auxiliary working of prepared column and worked-out space is less than limit length of dead-end section of lava adjacent to worked-out space, at reduction of which ventilation of the dead-end section of the lava is ensured by a stream of air passing through the lava due to general mine depression. During development of formations with hard-to-collapse roof rocks, auxiliary preparation of the prepared column passes simultaneously with transport and conveyor working of the prepared column. In development of formations with unstable roof rocks, auxiliary preparation of prepared column passes with delay from lava.

EFFECT: described is a method of underground development of mineral deposits.

3 cl, 2 dwg