CN219953407U - Double-air door jet tunnel type tunnel ventilation structure - Google Patents
Double-air door jet tunnel type tunnel ventilation structure Download PDFInfo
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- CN219953407U CN219953407U CN202321170269.5U CN202321170269U CN219953407U CN 219953407 U CN219953407 U CN 219953407U CN 202321170269 U CN202321170269 U CN 202321170269U CN 219953407 U CN219953407 U CN 219953407U
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- door
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- 238000009423 ventilation Methods 0.000 title claims abstract description 26
- 238000009412 basement excavation Methods 0.000 claims abstract description 24
- 239000002912 waste gas Substances 0.000 claims abstract description 13
- 230000009977 dual effect Effects 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a double-air door jet tunnel type tunnel ventilation structure, which relates to the technical field of tunnel construction ventilation and comprises the following components: wind-feeding tunnel; wind discharging tunnel; the first air inlet transverse channel and the second air inlet transverse channel are respectively communicated with the air supply hole and the air exhaust hole; the air suction chamber is arranged in the air exhaust tunnel, and one side of the air suction chamber is clung to the channel opening of the second air inlet transverse channel; the double air door chamber is arranged in the air supply hole; wherein the dual damper chamber includes a first damper and a second damper; the double air door chamber is formed by surrounding a first air door, a second air door and a tunnel body together; the first air door and the second air door are identical in structure; and (5) an air wall. The utility model solves the problems that the ventilation is slow in the long tunnel excavation process, the inflow range of fresh air is small, and the mixed flow of fresh air and waste gas is easy to occur, improves the ventilation efficiency in the tunnel, and enhances the ventilation effect.
Description
Technical Field
The utility model relates to the technical field of tunnel construction ventilation, in particular to a double-air door jet tunnel type tunnel ventilation structure.
Background
The tunnel is the underground construction that tunnels and excavate in mountain or underground, and in the tunnel excavation in-process, the ventilation condition in the tunnel is very important, especially when long tunnel construction, the demand to fresh air is great and need in time discharge the polluted air that produces, avoids polluted air and fresh air mixed flow simultaneously, guarantees the interior air of tunnel and the effectual circulation in time, satisfies constructor and constructs required air quality requirement in the tunnel, guarantees the production safety of tunnel excavation in-process.
However, the tunnel ventilation structure adopted at present adopts a press-in ventilation mode mostly in the whole process, a large number of press-in ventilators and jet fans are needed in the mode, more transformers are needed to be arranged, ventilation energy consumption is increased along with the length of a tunneling distance, production cost investment is increased intangibly, and tunnel ventilation effect is not ideal.
Disclosure of Invention
In order to solve the above problems, the present utility model provides a ventilation structure of a double-air door jet tunnel type tunnel, which is used in a double-tunnel excavation process, and comprises:
wind feeding tunnel and wind exhausting tunnel;
the air supply hole and the air exhaust hole are channels which are arranged along the tunnel excavation direction and are parallel to each other, wherein the air supply hole is used for inputting fresh air, and the air exhaust hole is used for exhausting production waste gas;
the first air inlet transverse channel and the second air inlet transverse channel are respectively communicated with the air supply hole and the air exhaust hole;
the second air inlet transverse channel is close to the tunnel portal compared with the first air inlet transverse channel;
the air suction chamber is of a closed hollow structure, is arranged in the air exhaust tunnel, and one side of the air suction chamber is connected with one end of the second air inlet transverse channel;
the double air door room, the double air door room sets up in send wind tunnel and set up between the passway of first air inlet cross channel with the second air inlet cross channel, the double air door room includes: the first air door and the second air door are arranged in parallel with the first air door, and the first air door, the second air door and the tunnel body form a sealed hollow double air door chamber;
the dual damper chamber further includes:
the second jet fan is arranged at one side of the double air door chamber close to the tunnel portal;
the second wind belt is of a hollow structure with openings at two ends, one end of the second wind belt is connected with the second jet fan, and the other end of the second wind belt is provided with an opening at the excavation face of the air supply hole.
Optionally, the suction chamber includes:
the first jet fan is arranged in the air suction chamber;
the first air belt, the one end opening of first air belt with first efflux fan links to each other, and the opening setting of the other end is in exhaust hole digs face department.
Optionally, the first air door and the second air door have the same structure;
wherein, the first air door includes: and the wind band reserved hole is arranged at the bottom and can be used for the second wind band to pass through.
Optionally, the first damper further includes: the negative pressure fan is arranged at the top, and the air supply direction of the negative pressure fan is arranged along the tunnel excavation direction;
the negative pressure fan at the top of the first air door is used for inputting fresh air outside the double air door into the double air door chamber;
and the negative pressure fan at the top of the second air door is used for discharging the production waste gas in the double air door chamber.
Optionally, the method further comprises: the air wall is made of an airtight material and is used for blocking transverse channels which are communicated with the air supply tunnel and the air exhaust tunnel and are outside the first air inlet transverse channel and the second air inlet transverse channel.
By adopting the technical scheme, the utility model has the following technical effects:
through setting up two air door rooms and suction chamber, in time send into the tunnel fresh air and in time discharge the waste gas that produces simultaneously, avoided fresh air and waste gas mixed flow's condition in the circulation of air process, guaranteed that each part has fresh air inflow in the tunnel, guaranteed the production safety of tunnel construction process.
Drawings
FIG. 1 is a schematic diagram of a double air door jet tunnel type tunnel ventilation structure provided by the utility model;
fig. 2 is a schematic diagram of a first air door in a double air door jet tunnel type tunnel ventilation structure provided by the utility model.
Wherein the reference numerals have the following meanings:
1. wind-feeding tunnel;
2. wind discharging tunnel;
3. a first air inlet transverse channel;
4. a second air inlet transverse channel;
5. an air suction chamber; 51. a first jet fan; 52. a first wind band;
6. a double damper chamber; 61. a first damper; 62. a second damper; 63. a wind band reserved hole; 64. a negative pressure fan; 65. a second jet fan; 66. a second wind band;
7. and (5) an air wall.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a detailed description of embodiments of the present utility model will be provided below, together with the accompanying drawings, wherein it is evident that the embodiments described are only some, but not all, of the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1-2, the present utility model provides a double-air door jet tunnel type tunnel ventilation structure, which uses a pedestrian crossing channel and a vehicular crossing channel which are synchronously arranged at intervals in a double tunnel, and uses the pedestrian crossing channel and the vehicular crossing channel as ventilation channels to supply air and exhaust air. The double-air door jet tunnel type tunnel ventilation structure comprises an air supply tunnel 1, an air exhaust tunnel 2 adjacent to the air supply tunnel 1, a first air inlet transverse channel 3 and a second air inlet transverse channel 4 which are connected with the air supply tunnel 1 and the air exhaust tunnel 2, an air suction chamber 5 arranged in the air exhaust tunnel 2, a double-air door chamber 6 arranged in the air supply tunnel 1 and an air wall 7 for blocking.
Further, the air supply hole 1 and the air exhaust hole 2 are respectively a left tunnel and a right tunnel of the double tunnels, when the tunnels are excavated, the air supply hole 1 and the air exhaust hole 2 are excavated synchronously, a jet fan facing the direction of the tunnel excavation surface is arranged in the air supply hole 1, fresh air outside the tunnels is introduced into the air supply hole 1 by the jet fan facing the tunnel excavation surface, a jet fan facing the direction of a tunnel gate is arranged in the air exhaust hole 2, and waste gas in the tunnels is led out of the air exhaust hole 2 by the jet fan facing the tunnel gate.
Further, the first air inlet transverse channel 3 and the second air inlet transverse channel 4 are pedestrian transverse channels and pedestrian transverse channels which are synchronously arranged at intervals in the double tunnels, the first air inlet transverse channel 3 and the second air inlet transverse channel 4 are communicated with the air supply hole 1 and the air exhaust hole 2, and the first air inlet transverse channel 3 and the second air inlet transverse channel 4 are internally provided with jet fans to assist the air circulation in the channels.
Further, the suction chamber 5 is disposed in the exhaust hole 2, the suction chamber 5 is disposed at a channel opening of the second air inlet transverse channel 4, the suction chamber 5 is of an airtight cuboid cavity structure, one side of the suction chamber 5 is connected with a channel outlet of the second air inlet transverse channel 4 in the exhaust hole 2, fresh air flowing into the exhaust hole 2 through the second air inlet transverse channel 4 in the exhaust hole 1 can only flow into the suction chamber 5, a first jet fan 51 is disposed in the suction chamber 5, the first jet fan 51 is connected with one end of the first air belt 52, the other end of the first air belt 52 is disposed at a tunnel excavation surface of the exhaust hole 2, and the first jet fan 51 conveys fresh air in the suction chamber 5 to the tunnel excavation surface of the exhaust hole 2 through the first air belt 52.
Specifically, when the jet fan in the air supply hole 1 works, fresh air outside the tunnel flows into the air supply hole 1, the inflow fresh air flows into the air suction chamber 5 through the second air inlet transverse channel 4, the fresh air is sent to the tunnel excavation surface of the air exhaust hole 2 through the first jet fan 51 in the air suction chamber 5, and production waste gas returned from the tunnel excavation surface is discharged outwards along the air exhaust hole 2.
Further, the double-air-door chamber 6 includes a first air door 61, a second air door 62 having the same structure as the first air door 61, air-belt reserved holes 63 respectively provided at the lower parts of the first air door 61 and the second air door 62, a negative pressure fan 64 provided at the upper parts of the first air door 61 and the second air door 62, a second jet fan 65 provided at the side direction of the double-air-door chamber 6 near the tunnel opening, and a second air belt 66 connected with the second jet fan 65. The double air door chamber 6 is a closed space surrounded by a first air door 61 and a second air door 62 which are arranged in parallel and a tunnel body, the first air door 61 is arranged on one side close to the opening of the air conveying tunnel 1, the second air door 62 is arranged on one side close to the excavation surface of the air conveying tunnel 1, and the double air door chamber 6 is used for accommodating equipment such as an air compressor and a transformer which are required by construction production in the tunnel.
Further, the double air door chamber 6 is disposed in the air supply hole 1 and between the first air inlet cross channel 3 and the channel opening of the second air inlet cross channel 4, the negative pressure fan 64 on the first air door 61 plays a role in sucking fresh air flowing in from the air supply hole 1 into the double air door chamber 6, the negative pressure fan 64 on the second air door 62 plays a role in exhausting waste gas generated by the operation of an air compressor and a transformer in the double air door chamber 6, the second jet fan 65 is connected with one end of the second air belt 66, the other end of the second air belt 66 sequentially passes through the air belt preformed holes 63 on the first air door 61 and the second air door 62, the second air belt 66 always extends to the tunnel excavation surface of the air supply hole 1, and the fresh air guided by the second jet fan 65 directly flows to the tunnel excavation surface of the air supply hole 1, so that the fresh air at the tunnel excavation surface is prevented from flowing with production waste gas in the double air door 6. The waste gas returned by the tunnel excavation surface and the waste gas discharged from the double-air door chamber 6 by the negative pressure fan 64 flow towards the exhaust hole 2 along the first air inlet transverse channel 3.
Specifically, when fresh air is sent into the air supply tunnel 1, the fresh air is sent to the tunnel excavation surface of the air supply tunnel 1 by a second jet fan 65 arranged on one side of the first air door 61 close to the tunnel opening through a second air belt 66 passing through the first air door 61 and the second air door 62 in sequence, the fresh air is sent into the double air chambers 6 by a negative pressure fan 64 on the first air door 61, the exhaust gas generated by the air compressor and the transformer is timely discharged by the negative pressure fan 64 on the second air door 62, and the exhaust gas discharged by the negative pressure fan 64 and the exhaust gas returned from the tunnel excavation surface of the air supply tunnel 1 flow into the air exhaust tunnel 2 through the first air inlet transverse channel 3 and are discharged outwards along the air exhaust tunnel 2.
Preferably, the air supply hole 1 and the air exhaust hole 2 can be appropriately increased in jet fans along with the change of the excavation length so as to increase the speed of fresh air supply and exhaust air discharge.
Further, the air wall 7 is made of an air impermeable material, and plays a role in preventing air from flowing in. When a tunnel is excavated, the first air inlet transverse channel 3 and the second air inlet transverse channel 4 are pedestrian transverse channels and pedestrian transverse channels which are synchronously arranged in the double tunnels at intervals, along with tunneling, a plurality of groups of first air inlet transverse channels 3 and second air inlet transverse channels 4 are arranged in the tunnels, but only one group of air is conveyed in the ventilation process, when the next section of tunnel is excavated, the channel openings of the unused first air inlet transverse channels 3 and second air inlet transverse channels 4 are required to be plugged, specifically, the air wall 7 is adopted to plug the unused first air inlet transverse channels 3 and second air inlet transverse channels 4, so that fresh air flowing into the tunnels can be completely fed into the first air inlet transverse channels 3 and the second air inlet transverse channels 4 which are being implemented when the next section of tunnel is excavated, and fresh air is ensured to effectively circulate.
Finally, it should be noted that: the embodiment of the utility model is disclosed only as a preferred embodiment of the utility model, and is only used for illustrating the technical scheme of the utility model, but not limiting the technical scheme; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (5)
1. A double damper jet tunnel type tunnel ventilation structure, comprising:
wind feeding tunnel and wind exhausting tunnel;
the air supply hole and the air exhaust hole are channels which are arranged along the tunnel excavation direction and are parallel to each other, wherein the air supply hole is used for inputting fresh air, and the air exhaust hole is used for exhausting production waste gas;
the first air inlet transverse channel and the second air inlet transverse channel are respectively communicated with the air supply hole and the air exhaust hole;
the second air inlet transverse channel is close to the tunnel portal compared with the first air inlet transverse channel;
the air suction chamber is of a closed hollow structure, is arranged in the air exhaust tunnel, and one side of the air suction chamber is connected with one end of the second air inlet transverse channel;
the double air door room, the double air door room sets up in send wind tunnel and set up between the passway of first air inlet cross channel with the second air inlet cross channel, the double air door room includes: the first air door and the second air door are arranged in parallel with the first air door, and the first air door, the second air door and the tunnel body form a sealed hollow double air door chamber;
the dual damper chamber further includes:
the second jet fan is arranged at one side of the double air door chamber close to the tunnel portal;
the second wind belt is of a hollow structure with openings at two ends, one end of the second wind belt is connected with the second jet fan, and the other end of the second wind belt is provided with an opening at the excavation face of the air supply hole.
2. The double damper jet tunnel type tunnel ventilation structure according to claim 1, wherein the suction chamber comprises:
the first jet fan is arranged in the air suction chamber;
the first air belt, the one end opening of first air belt with first efflux fan links to each other, and the opening setting of the other end is in exhaust hole digs face department.
3. The double-air door jet tunnel type tunnel ventilation structure according to claim 1, wherein the first air door and the second air door are identical in structure;
wherein, the first air door includes: and the wind band reserved hole is arranged at the bottom and can be used for the second wind band to pass through.
4. A dual damper jet tunnel type tunnel ventilation structure as claimed in claim 3, wherein said first damper further comprises: the negative pressure fan is arranged at the top, and the air supply direction of the negative pressure fan is arranged along the tunnel excavation direction;
the negative pressure fan at the top of the first air door is used for inputting fresh air outside the double air door into the double air door chamber;
and the negative pressure fan at the top of the second air door is used for discharging the production waste gas in the double air door chamber.
5. The dual damper jet tunnel type tunnel ventilation structure according to claim 1, further comprising: the air wall is made of an airtight material and is used for blocking transverse channels which are communicated with the air supply tunnel and the air exhaust tunnel and are outside the first air inlet transverse channel and the second air inlet transverse channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321170269.5U CN219953407U (en) | 2023-05-16 | 2023-05-16 | Double-air door jet tunnel type tunnel ventilation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321170269.5U CN219953407U (en) | 2023-05-16 | 2023-05-16 | Double-air door jet tunnel type tunnel ventilation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953407U true CN219953407U (en) | 2023-11-03 |
Family
ID=88544880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321170269.5U Active CN219953407U (en) | 2023-05-16 | 2023-05-16 | Double-air door jet tunnel type tunnel ventilation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953407U (en) |
-
2023
- 2023-05-16 CN CN202321170269.5U patent/CN219953407U/en active Active
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