METHOD FOR THE DEVELOPMENT OF POWERFUL GENTLE AND INCLINED ROCK BURST HAZARDOUS ORE DEPOSITS Russian patent published in 2021 - IPC E21C41/22 E21D21/00 

FIELD: mining.

SUBSTANCE: invention relates to mining, namely to the underground development of gentle and inclined deposits of minerals, and can be used for the development of powerful rockburst hazardous and structurally disturbed sections of the mountain range. The development method includes the creation of an artificial roof in the form of a bearing vault by driving parallel different-height chambers of the first and second stages in contact with the host rocks and filling the worked-out space with hardening mixtures. Excavation of minerals under the created artificial roof with chambers of the first and second stages with backfilling of the worked-out space with hardening mixtures. The filling array is reinforced with anchors installed along the normal to the soil of the chambers. The thickness of the roof of the bearing vault, which is a layered split beam, is determined according to the principle of calculating a monolithic vaulted structure with a given load from the pressure of the overlying layers of the fill and the dead weight of the bearing vault. The required strength of the bearing vault, as a formed hinge system, is provided by a given condition.

EFFECT: improving technical and economic indicators, improving work safety, expanding the scope of the chamber development system, increasing the volume of the main chamber reserves and reducing the specific volume of mining and preparatory work.

1 cl, 2 dwg