Centralized waste gas discharging method used in longitudinally ventilated road tunnel

A technology for road tunnels and tunnels, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc. It can solve problems such as difficult selection of well locations, expand exhaust methods, expand the scope of wind inlet site selection, The effect of improving feasibility

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

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  • Centralized waste gas discharging method used in longitudinally ventilated road tunnel

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Embodiment Construction

[0011] 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:

[0012] Such as figure 1 As shown, the labels 1-12 respectively represent: uplink tunnel 1, downlink tunnel 2, roundabout air duct 3, jet fan 4, centralized exhaust shaft 5, centralized fresh air shaft 6, fan 7, uplink tunnel exit 8, uplink tunnel entrance 9 , the exit 10 of the downlink tunnel, the entrance 11 of the downlink tunnel, and the air circulation route 12 in the tunnel.

[0013] Such as figure 1 As shown, the double-hole one-way road tunnel includes an uplink tunnel 1 and a downlink tunnel 2. During tunnel construction, detour air ducts 3 are respectively set between the up tunnel 1 and the down tunnel 2 near the two entrances, specifically, the detour air duct 3 is set up between the exit 8 of the up tunnel and the en...

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Abstract

The invention relates to a centralized waste gas discharging method used in longitudinally ventilated road tunnel, which belongs to the road tunnel ventilation and fire-fighting field. The road tunnel comprises an upward tunnel an a downward tunnel; The method comprises: disposing a pass-by duct on each tunnel near the tunnel portal to cause the airflow in one tunnel along the freight flow direction to flow into another tunnel through the pass-by duct; and arranging at least one centralized air-discharging well respectively inside the upward tunnel and the downward tunnel. The invention has the following advantages: solves the problem of addressing centralized air-discharge well in road tunnel, especially city tunnel; expands addressing range, develops tunnel ventilating and exhausting manners, and improves the tunnel construction feasibility of the section difficult for building wind well.

Description

technical field [0001] The invention relates to ventilation and fire protection of road tunnels, in particular to a method for intensively discharging waste gas in longitudinally ventilated road tunnels. Background technique [0002] In the road tunnel, the driving vehicles will continuously emit harmful exhaust gas and smoke. Since the tunnel concentrates a certain length of vehicle exhaust, when there are residents at the tunnel entrance, the tunnel exhaust gas is not allowed to be discharged concentratedly at the 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 tunnel can be discharged through the air shaft, reducing the impact on the environment near the cave entrance. [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 oppositio...

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Application Information

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IPC IPC(8): E21F1/00
Inventor 蒋卫艇郑晋丽奚峰汪雄平
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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