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Double-track tunnel based on reversible complementary ventilation

A double-track tunnel and tunnel technology, which is applied in tunnels, mining equipment, earthwork drilling and mining, etc., can solve the problems of poor return ventilation effect, achieve the effects of reducing energy saving, increasing return ventilation effect, and improving ventilation effect

Active Publication Date: 2015-03-04
ZHEJIANG UNIV OF TECH
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  • Claims
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Problems solved by technology

[0006] The shortcoming of this highway tunnel is that the roundabout air duct only connects the gap between the uplink and downlink tunnels, and no air induction measures are set at the gap, and the tunnel airflow flowing in the direction of traffic flow is only a small part. It can enter the circuitous air duct by itself, and its return ventilation effect is poor

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  • Double-track tunnel based on reversible complementary ventilation
  • Double-track tunnel based on reversible complementary ventilation
  • Double-track tunnel based on reversible complementary ventilation

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Embodiment Construction

[0033] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Firstly, calculate and analyze the air demand of the uplink and downlink tunnels, considering the following working conditions: ①The speed of the uplink and downlink tunnels is 50km / h; / h; ③The downlink tunnel passes normally at the design speed, the uplink tunnel passes slowly, and the speed of the working condition is 30km / h; ⑤The downlink tunnel passes normally at the designed speed, while the uplink tunnel traffic is blocked, the speed of the vehicle under working conditions is 10km / h, and the length of the blocked section is 1km; ⑥Requirements for fire and ventilation times. The required air volume calculation shall be carried out in accordance with the current norms and rules.

[0035] Such as figure 1 As shown, this embodiment is a two-lane tunnel based on reversible complementary ventilation, includ...

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Abstract

The invention discloses a double-track tunnel based on reversible complementary ventilation. The double-track tunnel comprises an upstream tunnel, a downstream tunnel and a connecting air passage, wherein the connecting air passage is used for communicating the upstream tunnel and the downstream tunnel; a position, near the connecting air passage, of each tunnel is provided with a cross section expansion region extending to a position outside a driving building limit of the tunnel; an opening of the connecting air passage is positioned in the cross section expansion region; each cross section expansion region is provided with an air passage partition wall; the opening of the connecting air passage is separated into an air blowing opening and an air sucking opening by the air passage partition wall; an air blowing opening air valve is arranged at the air blowing opening; and an air sucking opening air valve is arranged at the air sucking opening. The air passage partition wall impedes or performs flow division on tunnel air flow flowing in the traffic flow direction, and the tunnel air flow is driven to change the flowing direction to enter the connecting air passage and is further transferred into the opposite tunnel, so that the ventilation effect between the two tunnels is effectively improved; the backflow ventilation effect is favorably improved through the air blowing opening air valve and the air sucking opening air valve; and the opening of the air passage partition wall and the opening of the connecting air passage are positioned in the corresponding cross section expansion region, so that the driving safety in the tunnels cannot be influenced.

Description

technical field [0001] The invention belongs to the technical field of highway tunnel ventilation design, in particular to a double-lane tunnel based on reversible complementary ventilation. Background technique [0002] With the rapid development of highway construction in our country, great progress has been made in tunnel design and construction technology. By the end of 2012, there were 10,022 road tunnels with a mileage of 8,052.7 km, and 1,500 new road tunnels with a mileage of 1,799.3 km compared with 2011. And there are a number of extra-long tunnels with a length of more than 5km, such as the 18.3km-long Qinling Zhongnanshan Tunnel, the 12.3km-long Dapingli Tunnel, and the 12.1km-long Baojiashan Tunnel. [0003] Highway tunnels can be called the "throat" of the road network, with high investment costs and complex operation and management, especially the high operating costs of tunnel ventilation and lighting. The application and promotion of road tunnel energy-sav...

Claims

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Application Information

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IPC IPC(8): E21D9/14
CPCE21D9/14
Inventor 郑国平
Owner ZHEJIANG UNIV OF TECH
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