METHOD OF MANAGING GEOMECHANICAL CONDITION OF ROCK MASSIF Russian patent published in 2019 - IPC E21F15/00 

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used in the development of mineral deposits in the chamber and pillar systems of development with the laying of the goaf. This goal is achieved by defining and strengthening only that part of the inter-chamber pillar in which its deformations exceed the permissible limits, that is, by partial laying of the developed space in the case of chamber development systems, for this, in accordance with the source data and the geometrical parameters of the backfill site, a plot of load distribution - γ₁H and soil deposits - γ₁H+γ₂h on the roof of the reservoir is built, the allowable load (allowable pressure) on the ground pillar P_allow is determined, the line passing through the intersection point of these two graphs determines the minimum required bookmark level, and the tab itself of the worked-out space is produced below the intersection point of these diagrams, that is, where the calculated pressure on the cell is greater than the allowable one, taking into account the engineering calculation error equal to 20–30 %.

EFFECT: technical result is an increase in the efficiency of the backfilling operations by partially laying the worked-out space to the level of permissible pressure on the pillar ground.

1 cl, 1 dwg