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Natural dispersion air-discharge method for road tunnel

A road tunnel, decentralized technology, applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., can solve problems such as difficult selection of well positions, achieve rich discharge methods, save electricity expenses, and improve feasibility Effect

Active Publication Date: 2009-10-07
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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AI Technical Summary

Problems solved by technology

[0003] In the site selection of the exhaust shaft at the exit section of the tunnel, especially in the city, it is often restricted by various conditions, such as landscape, strong opposition from residents, planning and other reasons, it is difficult to select a suitable well location

Method used

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  • Natural dispersion air-discharge method for road tunnel

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Embodiment Construction

[0015] The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:

[0016] Such as figure 1 As shown in -3, the labels respectively indicate: uplink tunnel 1, downlink tunnel 2, tunnel side wall 3, tunnel side wall 4, air duct: U1, U2, U3, U4, U5, D1, D2, D3, D4, D5.

[0017] Such as figure 1 As shown, the road tunnel is a two-hole one-way road tunnel, including an uplink tunnel 1 and a downlink tunnel 2. In this embodiment, the direction close to the exit of the tunnel is referred to as the exit section of the tunnel. For the uplink tunnel 1 and the downlink tunnel 2, the exit sections are respectively located at both ends of the tunnel.

[0018] In the upward tunnel 1, the tunnel air is affected by the piston action of the vehicle, and flows from the entrance to the exit of the upward tunnel 1....

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Abstract

The invention relates to a natural dispersion air-discharge method for road tunnel belonging to the road tunnel ventilation field. The method mainly comprises forming a plurality of wind channels on the road tunnel exit segment in the range with the distance of 10%-40% of the tunnel overall length to the exit. The invention has the following advantages: saves electricity charge by adopting naturalair-discharge mode; solves the problem of centralized air-discharge well construction in road tunnel (especially city tunnel); dispersing the tunnel exhaust to reduce the influence to environment; enriches tunnel exhaust gas exhausting manners, and improves the tunnel construction feasibility of the section difficult for building wind well.

Description

technical field [0001] The invention relates to road tunnel ventilation, in particular to a method for naturally dispersing and exhausting air in a road tunnel. Background technique [0002] In the road tunnel, the driving vehicles will continuously emit harmful exhaust gas and smoke. When the concentration of harmful exhaust gas and smoke exceeds a certain value, it will bring harm to the drivers and passengers, affecting their health and driving safety. Therefore, in order to ensure the hygienic standard of the air environment required for the normal operation of the tunnel, the tunnel should be ventilated. Because the tunnel concentrates a certain length of automobile exhaust, when there are residents at the tunnel entrance, the tunnel exhaust gas is not allowed to be discharged concentratedly at the tunnel entrance. Therefore, urban tunnels are equipped with centralized waste gas discharge air shafts at the entrance of the cave, so that most of the exhaust gas of the tu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/00E21F1/08
Inventor 瞿立蒋卫艇郑晋丽沈哲强汪雄平
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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