METHOD OF MINING MINERAL DEPOSITS AND SUPERSTRUCTURE FOR ITS EMBODIMENT Russian patent published in 1997 - IPC

FIELD: mining; applicable in mining of diamond-bearing pipes of complicated structure occurring in complicated mining and geological conditions. SUBSTANCE: pipe is divided into levels with leaving a safety pillar in the crate part of the pipe. System of coaxially located drifts and radial directed cross-cuts are driven in the base of the upper level. Outer drift is located close to contact of pipe with enclosing rocks. Use full mineral is excavated by drilling of pilot holes whose bottoms are located in the roof of drifts and cross-cuts in direction towards safety pillar. Formed within the height of the level are section of the superstructure in form of circular cylinders interconnected with each other by pylons. Mineral is excavated by drilling pilothouses through the height of the lower level with location of their bottoms in roof of drifts and cross-cuts. Hydraulic excavation of mineral at the second stage is carried out by mining blocks in form of members of circular ring. Production blocks consists of production room analogous to block in shape. production room is confined by circular cylindrical sections and pylons. Mineral within contours of mining block is extracted through the entire height of the block equalling the height of levels. Opening slot is driven along the block axis separating the central angle by halves. Compensation slot is driven. Opening and compensation slots are driven by mining hydraulic giant with use of gas-liquid working agent with subsequent cavity and shrinkage of caved mineral in production rooms. Hydraulic excavation of mineral at the second stage is effected by single blocks with subsequent filling of worked-out space and further mining of mineral from diametrically opposite mining block. The superstructure for embodiment of the offered method includes circular cylindrical concrete structures made in form of sections of circular cylinders whose bases are rigidly connected with one another by circular bands. Circular cylindrical concrete structures are installed coaxially and rigidly connected in radial directions with one another by pylons. Sections of circular cylinders and pylons are formed from concrete tubes. Sections of circular cylinders and pylons are formed by circular straight cylinders. Concrete tubes and cylinders come in contact with each other by their elements. Lower end parts of sections have discharge ports located radially. Supports of end parts located between discharge ports are made in form of straight cylinders installed on pivot in form of wedges whose side faces are directed along pulp flow. EFFECT: higher efficiency. 7 cl, 30 dwg