METHOD FOR STRENGTHENING FACKED ROCKS DURING CONSTRUCTION OF CONNECTIONS OF HORIZONTAL MINING WORKS Russian patent published in 2021 - IPC E21D1/16 E21D11/10 E21B33/13 

FIELD: mining industry.

SUBSTANCE: invention relates to the mining industry and can be used in the construction of capital and sewage workings, having a mutual intersection. The method of strengthening fractured rocks during the construction of junctions of horizontal mine workings includes drilling wells for conductors and installing conductors, mounting valves on conductors, drilling cementing wells, preparing and pumping cement mortars, dismantling valves. Cement wells are drilled in the roof and sides of the main working at a given pitch, then packers are installed. The grout is injected within the grout curtain contour. The inner contour of the grout curtain is the contour of the projected interface of mine workings, and the outer one is the boundary of the natural collapse vault.

EFFECT: improving the safety of work during the construction of mine workings in fractured rocks, as well as facilitating the development of rocks within the interface contour.

1 cl, 3 dwg