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Underwater tunnel ventilation system and ventilation method

A technology for ventilation systems, underwater tunnels

Active Publication Date: 2015-06-03
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very difficult economically and technically to set up artificial island ventilation shafts in the sea, and the cost is high, especially in deep sea areas, it is almost impossible
Thus restricting the length of the sea-crossing section of the highway tunnel and the application of the tunnel in the sea-crossing passage

Method used

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  • Underwater tunnel ventilation system and ventilation method
  • Underwater tunnel ventilation system and ventilation method
  • Underwater tunnel ventilation system and ventilation method

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Embodiment Construction

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] As shown in the figure, an underwater tunnel ventilation system includes a main tunnel 1 and a service tunnel 2, the main tunnel 1 has two, the service tunnel 2 is arranged between the two main tunnels 1, and the service tunnel 2 is provided with an independent air inlet channel 3 and an air exhaust channel 4, and two ends are provided with a ventilation shaft air channel. The ventilation shaft air channel includes a ventilation shaft air supply channel 5 and a ventilation shaft exhaust channel 6. The ventilation shaft The air supply and exhaust ducts communicate with the air inlet duct 3 and the air exhaust duct 4 correspondingly; The air supply connecting air duct 8 communicates with the air supply port of the main tunnel 1 . The ventilation system uses the service tunnel 2 to introduce fresh air into the main tunnel 1 and dischar...

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Abstract

The invention discloses an underwater tunnel ventilation system and ventilation method. Two ends of a service tunnel are provided with ventilation shaft exhaust ducts and ventilation shaft air delivery ducts and are connected with the exhaust ducts and the air delivery ducts; each exhaust duct is communicated with one main tunnel via an exhaust connection duct; each air deliver duct is communicated with the other main tunnel by an air delivery connection duct; a replacement ventilation connection duct is arranged between the two main tunnels to communicate the two main ducts; fresh air enters the air delivery duct from the ventilation shaft air delivery ducts on two ends of the service tunnel, and enters one main tunnel via the air delivery connection duct; replacement axial fans are started to cause air flow in one main tunnel to enter the other main tunnel via the replacement ventilation connection duct, and polluted air is discharged from the ventilation shaft exhaust ducts via the exhaust connection duct and the exhaust ducts. According to the ventilation system, the service tunnel is used as an air duct to import fresh air into the tunnel and discharge the polluted air, and the difficulty that an artificial island ventilation shaft needs to be arranged in every multiple kilometres for a part, which passes through a water area, of the tunnel for a long distance is solved.

Description

technical field [0001] The invention belongs to the field of tunnel roads, and in particular relates to an underwater tunnel ventilation system and a ventilation method. Background technique [0002] A good air condition in a highway tunnel is a necessary condition for driving safety. Ventilation is to reduce the concentration of harmful gases or pollutants in the tunnel and ensure the safety and comfort of driving. At present, my country usually adopts segmented longitudinal ventilation of ventilation shafts to solve the ventilation problem of super long mountain tunnels, that is, a ventilation shaft needs to be installed every few kilometers to input fresh air into the tunnel to meet the operational needs of the tunnel. At present, the super long underwater tunnels that have been built in our country also adopt this kind of ventilation system, and the ventilation shafts are all arranged on land. Limited by the bottleneck of ventilation technology, the length of the underw...

Claims

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Application Information

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IPC IPC(8): E21F1/00E21F1/04E21F1/08E02D29/063
CPCE02D29/063E21F1/003E21F1/04E21F1/08
Inventor 陈建忠蒋树屏丁浩吴梦军张琦林志陶小兰
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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