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Smoke emission method in tunnel and tunnel ventilation system with separate smoke-emission device

A ventilation system and smoke exhaust device technology, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., can solve the problems of low construction cost and operating cost, increase of civil construction cost, high operating cost, etc., and achieve vertical smoke reduction The danger of spreading, the effect of improving safety

Active Publication Date: 2006-11-22
ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will increase the tunnel excavation area and increase the soil construction cost
In addition, the full horizontal or semi-transverse ventilation method cannot make full use of the piston wind effect of the car, and the fan power is large, so it is not energy-saving, and the operating cost is higher than that of the longitudinal ventilation.
[0013] Among the three major ventilation methods, the longitudinal ventilation method has the characteristics of low construction and operation costs and easy maintenance, but the effect of disaster prevention is slightly worse
It is very difficult to ensure the safe escape of personnel in extra-long highway tunnels, especially when there is a large passenger flow

Method used

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  • Smoke emission method in tunnel and tunnel ventilation system with separate smoke-emission device
  • Smoke emission method in tunnel and tunnel ventilation system with separate smoke-emission device
  • Smoke emission method in tunnel and tunnel ventilation system with separate smoke-emission device

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Embodiment Construction

[0074] see figure 1 , 2 , 3 and 4, the tunnel has two ports, the tunnel entrance 100 and the tunnel exit 101. In practical applications, even if the tunnel has multiple ports, the ventilation system is still applicable. The principles of ventilation and smoke exhaust are the same, but the specific arrangement of the equipment is different. .

[0075] The whole tunnel constitutes the main air duct 1 of the tunnel. Several jet fans 3 are installed on the top, side or other positions of the tunnel as required in the tunnel. The tunnel is provided with a vertical / inclined shaft exhaust connecting air duct 7 and a vertical / inclined shaft air delivery channel. The wind connecting air duct 8, the vertical / inclined shaft exhaust air connecting air duct 7 is provided with an exhaust fan 12, and the vertical / inclined shaft air supply connecting air duct 8 is provided with a blower fan 13. The independent smoke exhaust device includes a smoke exhaust duct 2, a smoke exhaust damper 5 ar...

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PUM

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Abstract

The invention relates to a tunnel smoke-discharge method, which comprises: (1), insulating one independent smoke-discharge channel in the tunnel, which comprises a smoke-discharge valve, a smoke-discharge transmission channel through to the smoke-discharge channel and a smoke-discharge fan inside the smoke-discharge transmission channel; (2) in normal condition, the smoke-discharge channel, smoke-discharge valve, the smoke-discharge transmission channel and the smoke-discharge fan do not work; (3), when discharging smoke, starting the smoke-discharge valve near the smoke source, to discharge the smoke into the smoke-discharge channel, and via the smoke-discharge transmission channel to be discharge outside the tunnel. The invention also discloses a relative tunnel ventilation system, with independent smoke-discharge system. The invention can be used in variable tunnels.

Description

technical field [0001] The invention relates to a tunnel smoke exhaust method and a tunnel ventilation system with an independent smoke exhaust device. It is mainly used for ventilation in the tunnel and smoke exhaust in case of fire. Background technique [0002] During the operation of road tunnels, vehicle emissions such as CO, NO X When the concentration of harmful exhaust gas and smoke exceeds a certain value, it will bring harm to the drivers and passengers, affecting their health and driving safety. Therefore, in order to ensure the hygienic standard of the air environment required for the normal operation of the tunnel, the tunnel should be ventilated. At the same time, there are always potential hazards caused by car fires or leakage of dangerous goods transportation during tunnel operation, and disaster prevention ventilation should be considered. Therefore, it is a major issue in tunnel ventilation and disaster prevention to not only ensure good air environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/00
Inventor 吴德兴杨健李伟平项小强
Owner ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD
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