Double-track tunnel employing vertical shaft blowing and exhausting combined with complementary ventilation

Abstract

The invention discloses a double-track tunnel employing vertical shaft blowing and exhausting combined with complementary ventilation. Uneven loads when two tunnels normally runs can be balanced through a complementary ventilation duct arranged between two tunnels, so that the targets of reducing a vertical / inclined shaft and equipment configuration and saving energy are achieved. Meanwhile, air exchange can be increased and the length application range of the complementary ventilation tunnel can be expanded by arranging the vertical shaft with blowing and exhausting functions; the smoke discharge distance in a tunnel fire can be reduced; and the disaster-prevention ability of the tunnel is improved. Therefore, complementary ventilation is carried out on the double-track tunnel through a contact duct; the ventilating vertical shaft is further utilized for blowing and exhausting and carrying out air exchange with the ground under the condition of not meeting the ventilation requirements; the work amount and the construction cost of a ventilation system and a power supply and distribution system can be reduced; and the vertical shaft is also used for discharging smoke in fire and reducing the length of the path through which smoke flows in the tunnel, so that the disaster-prevention ability of the tunnel is improved.

Description

technical field [0001] The invention belongs to the technical field of highway tunnel ventilation design, and in particular relates to a two-lane tunnel in which shaft conveying and discharging are combined with complementary ventilation. Background technique [0002] Cars driving in tunnels emit CO, NO x Exhaust gas such as smog and smog is dangerous to human health and driving safety. Therefore, the ventilation system is one of the indispensable auxiliary projects in super-long highway tunnels, which directly affects the construction investment and the environment and operation safety in the tunnel. At the same time, as the main source of energy consumption, it determines the operating cost of the tunnel throughout its life cycle. On the other hand, my country has a large population and relatively insufficient resources, so saving resources and energy is a basic national policy. [0003] At present, the ventilation system commonly used in super-long highway tunnels is si...

AI Technical Summary

Problems solved by technology

However, the main problem of this method is: the applicable tunnel length is limited, and the use is limited. It is only applicable to the total air volume required by the two tunnels less than 2 times the maximum allowable ventilation air volume of the tunnel. If the tunnel length is greater than 8km, it may not be applicable.

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