METHOD OF METRO STATIONS VENTILATION AND DEVICE FOR ITS IMPLEMENTATION

摘要

FIELD: ventilation.;SUBSTANCE: invention relates to ventilation and can be used for underground railway main ventilation systems. Method involves piston flow supply to station from trains arrival tunnels. Dispersed removal of waste air via under platform space by station ventilation shaft and inclined passages and trains departure tunnels. At tunnel outlet to station piston flow is divided into two flows: one in amount of approximately 1/3 part of incoming piston is supplied in form of inclined compact ventilation jets to station center one-third via channel, arranged under platform roof, which cross-section area is approximately 8 m², and second one in form of weakened piston flow is supplied to platform from tunnel at station end. In station platform center piston flow and station air mixture forms two flows towards ventilation hoods. According to movement to ventilation hood each flow is replenished by weakened piston flow supplied to platform from station end directly from trains arrival tunnels. Simultaneously in direction of travel part of exhaust air flow is dispersedly removed by station shaft via exhaust openings. Air intake into channel is carried out by means of fan unit and piston action of trains, wherein tunnel air into channel intake point is located before interaction area of tunnel flow and station shaft exhaust openings in order to reduce piston flow ejection intensity.;EFFECT: technical result consists in maintaining temperature and humidity and oxygen and carbon dioxide content rated parameters in air medium in all points of station platform, reduction of wind flows intensity, reduced operating costs for air control.;2 cl, 11 dwg, 4 tbl