Highway tunnel exhaust port opening method
A technology for road tunnels and smoke exhaust outlets, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc. It can solve the problem that there is no effective technical solution for the start-up method of smoke exhaust outlets, and achieve good smoke layer maintenance, Good safety space and optimized smoke exhaust effect
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Embodiment 1
[0018] Embodiment 1: This embodiment is a scheme for starting the smoke outlet of a one-way road tunnel. In the single-lane tunnel 1, the tunnel air is affected by the piston action of the vehicle and flows from the entrance of the tunnel 1 to the exit. Therefore, in this embodiment 1, considering the flow direction of the tunnel air, the entrance of the single-lane tunnel 1 is called the upstream direction 4 , and the exit is called the downstream direction 5 .
[0019] The specific values of the parameters of each device are as follows: the cross-section of the smoke exhaust port is a square of 2m×2m; the distance between adjacent smoke exhaust ports is 60m; the air volume of the smoke exhaust fan 3 is 100m 3 / s.
[0020] like figure 1 As shown, a flue exhaust duct 2 is arranged on the top of the single-row tunnel 1 along the length direction of the single-row tunnel 1 . The smoke exhaust duct 2 is connected with a smoke exhaust fan 3 . There are evenly and continuousl...
Embodiment 2
[0027] Embodiment 2: This embodiment is the start-up scheme of the smoke outlet of the single-hole double-lane tunnel 7. In the double-lane tunnel 7, the tunnel air is simultaneously affected by the uplink vehicle and the downlink vehicle, and the influence of the air flow on the smoke exhaust can be ignored, but To simplify the description, in this embodiment, one opening of the single-hole double-row tunnel 7 is still referred to as the upstream direction, and the other opening is referred to as the downstream direction. Although the tunnels are different, the principle of smoke extraction is the same, and the parameters of the equipment can also adopt the same configuration. Therefore, in this embodiment, the configuration of other devices is the same as that of Embodiment 1 except that the smoke exhaust port activation mode is different.
[0028] The present embodiment 2 starts the exhaust port according to the following operating procedure:
[0029] Before the fire sourc...
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