MINE WORKING WATERPROOFING METHOD Russian patent published in 2025 - IPC E21D11/38 E21F17/103 E21C41/20 

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used in underground development of deposits, for example, potassium salts for waterproofing flooded areas and watered mine workings. Method of mine working waterproofing involves erection of concrete bridges in cuts of mine working with formation of inter-bridge space, filling of inter-bridge space with homogeneous viscous liquid through supply tube, maintaining constant pressure of homogeneous viscous fluid on enclosing rocks of mine working, which exceeds pressure of expected influx of water or brine to waterproofing structure. In the hydro-insulated mine working there is an additional cut for the inter-bridge space with a height exceeding the height of the cut for concrete bridges, filling of inter-bridge space is carried out simultaneously with waterproofing of contact of concrete bridges and host rocks until constant pressure of homogeneous viscous liquid on host rocks of mine working is established, and maintenance of constant pressure of this liquid is carried out independently by means of a supply tube, a high-pressure hose filled with a viscous homogeneous liquid, and gas cylinders, which are connected to each other and form a long-term pressure maintenance system. Volume of liquid in the hose, which is required for long-term pressure maintenance, is calculated by the formula.

EFFECT: improving reliability of mine working waterproofing, increasing service life of waterproofing structure, as well as providing safe working conditions of personnel servicing it.

4 cl, 1 dwg