METHOD OF VENTILATION OF DOUBLE-LINE METRO TUNNELS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC E21F1/08 

FIELD: ventilation.

SUBSTANCE: group of inventions refers to method and device for ventilation of double-line metro tunnels. Way of ventilation of double-line metro tunnels includes year-round supply of outdoor air into a double-line tunnel along flushing air shaft located at the station, air duct located in the upper part of tunnel, and expulsion of tunnel air from a double-line tunnel through extraction units. Incoming air, discharged by devices of tunnel ventilation to the station, is fed through the air channel in both directions from the station through openings in the end wall of the channel, return air is disposed through openings of equal aspiration of design size, made in divide wall of subplatform channel at the station at places of biggest heat liberation. Inflow and exhaust ventilation chambers are located close to each other in station complex and use recoverable resources of heat recovery without mix of exhaust air. Device for ventilation of double-line metro tunnels includes inflow and exhaust air shafts located at the station, the air duct located in the upper part of the tunnel, in the end wall of air duct, air-intake / exhaust openings are made on both sides of the station, the air duct is not extended about 200 m to the center of trackspan. In the divide wall of the subplatform channel in the places of the biggest heat liberation, the openings of equal aspiration are made. Area of the openings of equal aspiration is calculated depending on the speed and flow rate of transport air.

EFFECT: technical result is to ensure and maintain rate parameters of the microclimate and air in double-line tunnels and platform halls of subway stations with smoke protection.

2 cl, 7 dwg