Long and big subway tunnel longitudinal ventilation and smoke discharging system with mutually-standby smoke discharging air passages at two sides

Abstract

The invention discloses a long and big subway tunnel longitudinal ventilation and smoke discharging system with mutually-standby smoke discharging air passages at two sides. The system comprises a single-hole tunnel and a middle separating wall, wherein the middle separating wall is used for dividing the single-hole tunnel into double-track tunnels; two end openings of the single-hole tunnel are respectively provided with jet fans; the middle part of the single-hole tunnel is provided with reversible axial flow accident fans which are communicated with tunnels arranged at two sides of the single-hole tunnel through a high temperature flue. According to the system disclosed by the invention, an evacuation strategy for managing in-place personnel evacuation and an operating strategy of a smoke discharging system when a train is forced to stop in a long and big tunnel due to a fire of the long and big tunnel are put forward for the first time; the system has the advantages that the damage to the environment by a partitioned vertical shaft / inclined shaft scheme is well avoided, the construction difficulty, the first investment cost and the operating cost are reduced to a large extent, the arrangement of the mutually-standby smoke discharging air passages which are arranged at the two sides are respectively convenient for reasonably managing smoke gas diffusion, an application range of longitudinal ventilation and smoke discharging can be enlarged on the premise that the ventilation effectiveness and the personnel evacuation safety are ensured, and good economic benefit and good social benefit are obtained.

Description

technical field [0001] The invention relates to a longitudinal ventilation and smoke exhaust system for unsteady multi-movement fires in long subway tunnels. More specifically, the invention relates to a smoke exhaust system with two sides serving as spare smoke exhaust ducts for long and single-hole subway tunnels. Fire longitudinal ventilation and smoke extraction system. Background technique [0002] In recent years, as my country's high-speed rail, subway and other technologies have matured, the scale of tunnels under construction and newly put into use has also increased year by year, and the ventilation and smoke exhaust technology used to deal with tunnel fires has also developed accordingly. According to statistics, the frequency of tunnel fires is about 2 times / 10 8 ·Car·Kilometer. For long tunnels, once a fire occurs, it will pose a huge threat to the safety of personnel and the safety of the tunnel structure. [0003] At present, the following three types are g...

AI Technical Summary

Problems solved by technology

If the front vehicle driving in the tunnel is forced to stop in the tunnel to organize personnel evacuation due to a fire at the rear, then the high-temperature smoke generated by the fire will spread along the tunnel and cause serious damage to the passengers of the rear vehicle. a huge threat

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