DEVELOPMENT OF PRODUCTIVE DEPTHS IN URBANISED TERRITORY AND SUBSURFACE FACILITIES TO THIS END

摘要

FIELD: mining.;SUBSTANCE: claimed process comprises the selection of mineral extraction location proceeding from geological conditions of ore occurrence, well drilling and development. Hydraulic borehole mining is executed at underground heading, i.e. at ore occurrence stope. The stope worked volume is filled by overlying rock failure. At the selection of the hard mineral working location additionally considered are the local requirements and constraints in operation of given site of urbanised territory. Geotechnological wells are drilled and developed to a hexagonal cell. Extraction of hard minerals and failure of overlying rock massif are performed inside the depth volume confined by a right hexagonal parallelepiped. The latter is composed by encase wells drilled from the surface to rock deposit bottom. A complete backfilling of worked space comprises the slot cut of side panels of hexagonal massif of rock overlying the stope roof from the rock massif surrounding the aforesaid cell. This causes the self-failure of rock within the boundaries of the hexagonal parallelepiped and the formation of a new overlying hexagonal cavity.;EFFECT: possibility of underground local ore working under conditions of territory development and simultaneous formation of underground cavity.;2 cl, 5 dwg