Road tunnel intercommunication type longitudinal ventilation mode

Abstract

The invention discloses a road tunnel intercommunication type longitudinal ventilation mode. The road tunnel intercommunication type longitudinal ventilation mode is characterized in that: an underground fan room and a connection ventilation duct are arranged at an appropriate position between two adjacent tunnels; the underground fan rooms are used for installing ventilation fans; the connection ventilation ducts are used for connecting the air flow of two tunnels; the automobile tail gas, which is generated in sections from the underground fan rooms to outlets, of pure uphill tunnels or uphill-major tunnels (uphill tunnels for short) is diluted by using cleaner air in pure downhill tunnels or downhill-major tunnels (downhill tunnels for short); and the polluted air, which is generated in sections from inlets to the underground fan rooms, of the uphill tunnels is discharged through the outlets of the downhill tunnels. By adoption of the road tunnel intercommunication type longitudinal ventilation mode, ventilation equipment can be reduced, ventilation shafts, inclined shafts or electrostatic dust removal stations are eliminated, and ventilation power consumption in daily operation is low, so that civil engineering cost and operation cost are reduced.

Description

technical field [0001] The invention relates to a highway tunnel intercommunicating longitudinal ventilation method utilizing adjacent tunnels for ventilation. It is mainly used in the ventilation system of separated road tunnels. 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 2000, nearly 2,000 highway tunnels had been built in my country, with a single tunnel extending nearly 500 km. Among them, nearly 20 extra-long tunnels with a length greater than 3 km had been built. The Zhongnanshan Tunnel in Qinling, Shaanxi, which has been completed and opened to traffic, has a length of 18 km. With the growing size of road tunnels, tunnel operation ventilation has become one of the controlling technologies restricting the design and construction of long road tunnels in the 21st century. If there is no effective ventilation method to discharge ...

AI Technical Summary

Problems solved by technology

[0009] However, measure (1) is at the expense of increasing equipment and power consumption, and its scope of application is limited; measure (2) will inevitably lead to an increase in civil engineering costs, and the cost of building a ventilation shaft or inclined shaft ranges from several million to several thousand In addition, due to the limitation of the buried depth of mountain tunnels, it is often difficult to determine the appropriate shaft or inclined shaft position. For example, the deepest ventilation shaft of the Qinling Zhongnanshan Tunnel reaches more than 600 meters, and the construction is extremely difficult. In the future, the operating cost will be extremely high; measure (3) the equipment cost is expensive, the technology is not mature, and there is no successful precedent in China

Images