DEVICE FOR VENTILATING FACES OF SPENT UNDERGROUND WORKINGS Russian patent published in 2019 - IPC E21F1/00 

FIELD: mining.

SUBSTANCE: invention relates to mining and construction and can be used in underground mine workings on strong rocks by drilling and explosion mechanics: tunnel, drifts, curtain rolls, road tunnels, underground workings and collectors in urban construction. Device includes a bottom-hole disk and a working zone disk, installed in front of each other to form an inter-disk cavity, a nozzle for aspiration of dusty air from the bottom-hole zone, connected to an exhaust fan, as well as the device is equipped with external nozzles fixed on the disk of the working zone and interconnected with the inter-disk cavity, and injection fans. Bottom-hole disk has openings. Branch pipes for aspiration of the working zone disk are connected telescopically to branch pipes for aspiration of bottom-hole disk and are made with collectors communicated with bottom-hole zone and with inter-disk cavity. Outer branch pipes with siphons and fixed on the working area disk are telescopically connected to external branch pipes made with siphons and fixed on the bottom-hole disk, wherein the siphon nozzles are installed in one plane parallel to each other and the surface of the disks, and in the lower part of the bottom-hole disk and the disc of the working zone, ventilation openings are made in the form of segments.

EFFECT: technical result consists in improvement of efficiency of air exchange in bottom-hole at high-speed performance of mine workings by drilling-explosive and mechanical complex.

1 cl, 3 dwg