A Two-Line Tunnel Based on Reversible Complementary Ventilation

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...

AI Technical Summary

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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