High-speed thermal circulation air curtain construction method for tunnel portal

A construction method and thermal cycle technology, applied in the ventilation, heating, space heating and ventilation directions of mines/tunnels, which can solve the problems of freezing tunnel mouths and affecting traffic safety, reduce heat demand and stabilize station temperature. , the effect of driving safety
CN101463731AActive Publication Date: 2009-06-24SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
Publication Date
2009-06-24

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Abstract

The invention relates to the field of fixed buildings, in particular to a construction method of a tunnel portal high-speed thermal-circulation air curtain applicable to track traffic positive line and access field line portals in high-latitude and high-cold areas. In the method, when a subway underground section is opened to the ground surface, a tunnel portal is provided with a thermal air curtain spouted at a high speed; a thick air curtain is formed at the tunnel portal, preventing sever cold air outside the tunnel from invading and reducing heat exchange; in a parallel-double-portal tunnel, a communicating channel and a circuitous channel are added and arranged in a partition wall of the tunnel, effectively channelizing train piston air; meanwhile, a circulated air channel, a break-of-gauge channel, a circulation chamber, and the like, are arranged to circulate hot air, thus effectively reducing the calorific requirement of an adjacent station, stabilizing the temperature in a station, and reducing the freezing of a hot-cold intersection of the portal and ensuring traffic safety.
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Description

Technical field

[0001] The invention relates to fixed buildings, in particular to a tunnel tunnel high-speed thermal circulation air curtain construction method suitable for the main line of rail transit and the entrance and exit lines of high-latitude and high-cold areas. Background technique

[0002] In the subway system, when the underground section extends from underground to the ground, due to the influence of the piston wind of the train, the train enters and exits the tunnel entrance, or due to the influence of the adjacent tunnel tunnel, there is an air exchange between the tunnel entrance and the outdoor air. The highest instantaneous airflow can exceed 15m / s in the tunnel where the train is directly traveling, and the wind speed can reach several meters / s due to the influence of the adjacent section.

[0003] In the high-latitude and high-cold area similar to Harbin, when the outdoor temperature is extremely low (for example, the heating temperature in Harbin is -26℃ in...

Claims

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