CN211230483U - Middle partition plate air duct type railway double-hole tunnel - Google Patents
Middle partition plate air duct type railway double-hole tunnel Download PDFInfo
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- CN211230483U CN211230483U CN201922450766.0U CN201922450766U CN211230483U CN 211230483 U CN211230483 U CN 211230483U CN 201922450766 U CN201922450766 U CN 201922450766U CN 211230483 U CN211230483 U CN 211230483U
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Abstract
The utility model relates to a median septum wind channel formula railway double-hole tunnel, lead and inclined shaft including tunnel, tie, set up the inclined shaft median septum in the inclined shaft through the cross passage intercommunication between the tunnel is with leading, and the median septum keeps apart the inclined shaft and forms first wind canal and second wind canal, and first wind canal intercommunication is flat to lead, and second wind canal intercommunication tunnel, first wind canal are used for the air inlet, and the second wind canal is used for the air-out. By applying the utility model, fresh air formed by fresh air can enter the horizontal guide through the first air channel and then enter the tunnel through the horizontal channel, and sewage air in the horizontal guide is brought into the tunnel in the process and is discharged from the second air channel together with sewage air in the tunnel, so that the separation of the fresh air and the sewage air is realized, tunnel type ventilation is formed, and the ventilation efficiency is improved; meanwhile, normal excavation operation in the tunnel can be guaranteed, and the tunnel construction efficiency is not influenced; the middle partition plate air duct type railway double-hole tunnel is simple in structure, convenient to use and good in effect.
Description
Technical Field
The utility model relates to a tunnel construction ventilation technical field, especially a median septum wind channel formula railway double tunnel.
Background
During tunnel construction, the air flowing speed in the tunnel is low, and the concentration of pollutants such as dust and smoke caused by construction such as blasting is high. Therefore, the reasonable ventilation method is effective guarantee for tunnel safety construction, and the ventilation problem of long railway tunnel construction in plateau areas is particularly outstanding.
At present, common tunnel ventilation modes include pipeline single-head type ventilation and roadway type ventilation. The single-head type ventilation of the pipeline refers to a ventilation mode of conveying fresh air to an excavation working surface or extracting pollutants from the excavation surface by installing a fan and an air pipe, and is particularly divided into a press-in type, an extraction type and a mixed type, and due to the influence of air leakage and wind resistance, the single-head type ventilation of the pipeline cannot meet the ventilation effect required in the tunnel after the single-head type ventilation of the pipeline exceeds a certain length in a tunnel work area; tunnel type ventilation means that utilize tunnel itself and supplementary gallery to constitute two systems of air inlet and air-out and mutually support and reach the ventilation purpose, can make full use of supplementary gallery carry out the construction and ventilate, shortens the distance that the one-end ventilates greatly, improves ventilation effect.
Due to the requirement of construction period and the requirement of ventilation length of single-end construction, the long and large railway tunnel usually needs to be constructed to open up a working face so as to accelerate the construction progress, and the working area of the auxiliary tunnel also needs to be ventilated in the construction period. When the work area of the inclined shaft is long, the air inlet channel and the air exhaust channel are usually required to be separated to ensure the effectiveness of ventilation, so that a main inclined shaft and an auxiliary inclined shaft which are separated need to be built and are respectively used for air supply and air exhaust to form tunnel type ventilation. However, because the cost of constructing the main inclined shaft and the auxiliary inclined shaft is high, in some tunnel projects, under the condition that only one inclined shaft is constructed, the air duct type ventilation of the middle partition plate is adopted, the inclined shaft is divided into two closed parts by a concrete plate, the upper part is used for introducing fresh air, and the lower part is used for transporting and discharging dirty air. As shown in fig. 1-2, when the common duct type ventilation with the intermediate partition plate is adopted, the tunnel main tunnel work area is still usually in a single-head type ventilation mode because the isolation and diversion of fresh air and dirty air is not performed at the tunnel main tunnel. When the distance between the tunnel excavation face and the inclined shaft is large, the ventilation mode cannot meet the requirement, and the construction environment in the tunnel is difficult to guarantee. Therefore, it is necessary to improve the efficiency of tunnel ventilation and ensure the air quality of the tunnel face by effective ventilation measures on the premise of adopting the air channel type ventilation.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: to solve the problems in the prior art, the middle partition plate air duct type railway double-hole tunnel is provided.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a well baffle wind channel formula railway double-hole tunnel, includes the tunnel, puts down and leads and inclined shaft, the tunnel with put down to lead between through the cross passage intercommunication, set up the baffle in the inclined shaft, the baffle will in the inclined shaft keep apart to form first wind channel and second wind channel in the inclined shaft, first wind channel intercommunication put down and lead, second wind channel intercommunication the tunnel, first wind channel is used for the air inlet, the second wind channel is used for the air-out.
By adopting the middle partition plate air channel type railway double-hole tunnel, fresh air formed by fresh air can enter the flat guide through the first air channel and then enter the tunnel through the transverse channel through the flat guide, in the process, sewage air in the flat guide is brought into the tunnel and is discharged from the second air channel together with the sewage air in the tunnel, so that the separation of the fresh air and the sewage air is realized, tunnel type ventilation is formed, and the ventilation efficiency is improved; meanwhile, normal excavation operation in the tunnel can be guaranteed, and the tunnel construction efficiency is not influenced; the middle partition plate air duct type railway double-hole tunnel is simple in structure, convenient to use and good in effect.
Preferably, an air door matched with the section of the flat guide is arranged in the flat guide, the air door is positioned between the transverse channel and the first air channel, a fan is arranged in the first air channel or the flat guide, and the fan is used for supplying air to the working surface of the tunnel and supplying air to the working surface of the flat guide.
With this arrangement, fresh air can be directly supplied to the working face, and the flat dirty air is blocked by the damper and can only enter the tunnel and be discharged from the second air duct.
Further preferably, the middle partition plate air duct type railway double-hole tunnel further comprises an air duct, the fan is connected with an inlet of the air duct, the air duct penetrates through the air door, one outlet of the air duct is located on the working surface of the flat guide, and the other outlet of the air duct is located on the working surface of the tunnel.
Further preferably, a ventilation channel is arranged between the tunnel and the flat guide, a ventilation passageway is arranged in the flat guide, the ventilation passageway is communicated with the second air channel and the ventilation channel, the periphery of one end of the ventilation passageway is aligned with the periphery of the end part of the second air channel, and the periphery of the other end of the ventilation passageway is aligned with the periphery of the end part of the ventilation channel.
Further preferably, the first air duct is located on the upper side of the inclined shaft, and the second air duct is located on the lower side of the inclined shaft.
Further preferably, the ventilation passageway comprises partition walls on both sides and a partition board in the pilot tunnel connected to the top of the partition walls.
Preferably, the ventilation passageway is a concrete member, and the problems of large ventilation resistance and large air leakage rate of the common middle partition plate can be effectively solved.
Further preferably, the damper is slidably connected within the planar guide.
Further preferably, the fan is a jet fan.
Preferably, the inclined shaft is connected to the middle of the flat guide in the length direction.
Preferably, the cross section of the inclined shaft is in a sector shape at the upper part and in a rectangular shape at the lower part.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. by applying the middle partition plate air duct type railway double-hole tunnel, fresh air formed by fresh air can enter the flat guide through the first air duct and then enter the tunnel through the transverse channel through the flat guide, in the process, sewage air in the flat guide is brought into the tunnel and is discharged from the second air duct together with the sewage air in the tunnel, so that the separation of the fresh air and the sewage air is realized, tunnel type ventilation is formed, and the ventilation efficiency is improved; meanwhile, normal excavation operation in the tunnel can be guaranteed, and the tunnel construction efficiency is not influenced; the middle partition plate air duct type railway double-hole tunnel is simple in structure, convenient to use and good in effect;
2. by applying the middle partition plate air duct type railway double-hole tunnel, fresh air can be directly sent to the working face, and the flatly-guided dirty air is blocked by the air door and can only enter the tunnel and be discharged by the second air duct;
3. application a median septum wind channel formula railway double-hole tunnel, the ventilation passageway is the concrete component, can effectively solve the problem that ordinary median septum ventilation resistance is big, the amount of wind leaks is big.
Drawings
FIG. 1 is a schematic plan view of a conventional intermediate deck ducted railway tunnel;
FIG. 2 is a schematic cross-sectional view of the slant well of FIG. 1;
fig. 3 is a schematic plan view of the middle partition plate air duct type railway double-hole tunnel according to the present invention;
FIG. 4 is a schematic cross-sectional view of the slant well of FIG. 3;
fig. 5 is a schematic perspective view of a double-hole tunnel of a median septum wind channel type railway according to the present invention;
fig. 6 is a schematic view of the ventilation of fig. 5.
The labels in the figure are: 1-tunnel, 2-flat guide, 3-inclined shaft, 4-transverse channel, 5-working face, 6-ventilating duct, 7-fan, 8-air pipe, 9-air door, 10-partition wall, 11-guide hole middle partition plate and 12-inclined shaft middle partition plate.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Examples
As shown in figures 3-6, the utility model discloses a median septum wind channel formula railway double tunnel, including tunnel 1, flat 2 and inclined shaft 3 of leading.
The tunnel 1 with it leads 2 between through cross passage 4 intercommunication to tie, as shown in fig. 4, the cross-section upper portion of inclined shaft 3 is fan-shaped, and the lower part is the rectangle, set up baffle 12 in the inclined shaft 3, baffle 12 will in the inclined shaft 3 keeps apart and forms first wind channel and second wind channel, first wind channel is located 3 upsides of inclined shaft, the second wind channel is located 3 undersides of inclined shaft.
The inclined shaft 3 is connected to the middle part of the flat guide 2 in the length direction, the first air channel is communicated with the flat guide 2, the second air channel is communicated with the tunnel 1, the first air channel is used for air inlet, and the second air channel is used for air outlet; an air duct 6 is arranged between the tunnel 1 and the flat guide 2, a ventilation passageway is arranged in the flat guide 2 and is communicated with the second air channel and the air duct 6, the periphery of one end of the ventilation passageway is aligned with the periphery of the end part of the second air channel, and the periphery of the other end of the ventilation passageway is aligned with the periphery of the end part of the air duct 6; specifically, the ventilation passageway comprises partition walls 10 located on two sides and a guide hole middle partition plate 11 connected to the top of the partition walls 10, and the ventilation passageway is a concrete member poured by a template, so that the problems of large ventilation resistance and large air leakage rate of a common middle partition plate can be effectively solved.
An air door 9 matched with the cross section of the flat guide 2 is arranged in the flat guide 2, the air door 9 is slidably connected in the flat guide 2, the air door 9 is positioned between the cross passage 4 and the first air channel, a fan 7 is arranged in the first air channel or the flat guide 2, the fan 7 is connected with an inlet of an air pipe 8, the air pipe 8 passes through the air door 9, one outlet of the air pipe 8 is positioned on the working surface 5 of the flat guide 2, the other outlet of the air pipe 8 is positioned on the working surface 5 of the tunnel 1, the fan 7 is used for supplying air to the working surface 5 of the tunnel 1 and supplying air to the working surface 5 of the flat guide 2, fresh air can be directly supplied to the working surface 5, and dirty air of the flat guide 2 is blocked by the air door 9 and can only enter the tunnel 1 and be discharged by the second air channel; specifically, the fan 7 is a jet fan.
By applying the utility model, fresh air formed by fresh air can enter the flat guide (2) through the first air channel and then enter the tunnel (1) through the transverse channel (4) by the flat guide (2), in the process, dirty air in the flat guide (2) is brought into the tunnel (1) and is discharged from the second air channel together with the dirty air in the tunnel (1), so that the separation of the fresh air and the dirty air is realized, tunnel-type ventilation is formed, and the ventilation efficiency is improved; meanwhile, normal excavation operation in the tunnel (1) can be guaranteed, and the construction efficiency of the tunnel (1) is not influenced; the middle partition plate air duct type railway double-hole tunnel is simple in structure, convenient to use and good in effect.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a well baffle wind channel formula railway double-hole tunnel, includes tunnel (1), flat lead (2) and inclined shaft (3), tunnel (1) with it leads through cross passage (4) intercommunication between (2) to go flat, its characterized in that, set up baffle (12) in the inclined shaft in (3), baffle (12) will in the inclined shaft (3) keep apart and form first wind channel and second wind channel, first wind channel intercommunication flat lead (2), second wind channel intercommunication tunnel (1), first wind channel is used for the air inlet, the second wind channel is used for the air-out.
2. The double-hole tunnel of a median septum wind channel type railway according to claim 1, characterized in that the flat guide (2) is provided with a damper (9) adapted to the cross section thereof, the damper (9) is located between the cross channel (4) and the first air duct, and a fan (7) is provided in the first air duct or the flat guide (2), and the fan (7) is used for supplying air to the working surface (5) of the tunnel (1) and for supplying air to the working surface (5) of the flat guide (2).
3. The double-hole tunnel of a median septum wind channel type railway according to claim 2, characterized by further comprising an air pipe (8), wherein the fan (7) is connected with the inlet of the air pipe (8), the air pipe (8) passes through the air door (9), one outlet of the air pipe (8) is positioned on the working surface (5) of the flat guide (2), and the other outlet of the air pipe (8) is positioned on the working surface (5) of the tunnel (1).
4. The double-hole tunnel of a median septum wind channel type railway according to claim 3, characterized in that an air channel (6) is arranged between the tunnel (1) and the flat guide (2), and a ventilation passage is arranged in the flat guide (2) and is communicated with the second air channel and the air channel (6).
5. The mid-bulkhead ducted railway double-tunnel according to claim 4, wherein the first air duct is located on an upper side of the inclined shaft (3), and the second air duct is located on a lower side of the inclined shaft (3).
6. The double tunnel railway tunnel with intermediate partition plate according to claim 5, characterized in that the ventilation aisle comprises partition walls (10) at both sides and a tunnel intermediate partition plate (11) connected to the top of the partition walls (10).
7. The mid-deck ducted railway double-tunnel of claim 4, wherein the ventilation aisle is a concrete member.
8. The double tunnel railway of claim 2, characterized in that the dampers (9) are slidingly connected inside the flat guides (2).
9. The double tunnel railway of claim 2, characterized in that the fan (7) is a jet fan.
10. A mid-bulkhead ducted railway double-tunnel according to any one of claims 1 to 9, wherein the slant well (3) is connected to a middle portion in a length direction of the horizontal duct (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922450766.0U CN211230483U (en) | 2019-12-30 | 2019-12-30 | Middle partition plate air duct type railway double-hole tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922450766.0U CN211230483U (en) | 2019-12-30 | 2019-12-30 | Middle partition plate air duct type railway double-hole tunnel |
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| CN211230483U true CN211230483U (en) | 2020-08-11 |
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| CN201922450766.0U Active CN211230483U (en) | 2019-12-30 | 2019-12-30 | Middle partition plate air duct type railway double-hole tunnel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523774A (en) * | 2020-12-24 | 2021-03-19 | 中铁二十局集团第一工程有限公司 | Inclined shaft auxiliary main tunnel construction ventilation system |
| CN113389585A (en) * | 2021-05-17 | 2021-09-14 | 中交第二公路工程局有限公司 | Cooling system and method for air channel type ventilation of high geothermal tunnel |
| CN113586123A (en) * | 2021-09-07 | 2021-11-02 | 中国矿业大学(北京) | Adjustable intelligent row-feeding type ventilation system for double-line tunnel |
| CN114046170A (en) * | 2021-11-03 | 2022-02-15 | 中铁第一勘察设计院集团有限公司 | Construction ventilation system for simultaneously operating four faces of ultra-long tunnel by using transverse channel |
| CN114856672A (en) * | 2022-04-27 | 2022-08-05 | 重庆巨能建设集团路桥工程有限公司 | Tunnel construction ventilation method and wind room structure of long and large tunnel series fan |
-
2019
- 2019-12-30 CN CN201922450766.0U patent/CN211230483U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523774A (en) * | 2020-12-24 | 2021-03-19 | 中铁二十局集团第一工程有限公司 | Inclined shaft auxiliary main tunnel construction ventilation system |
| CN113389585A (en) * | 2021-05-17 | 2021-09-14 | 中交第二公路工程局有限公司 | Cooling system and method for air channel type ventilation of high geothermal tunnel |
| CN113586123A (en) * | 2021-09-07 | 2021-11-02 | 中国矿业大学(北京) | Adjustable intelligent row-feeding type ventilation system for double-line tunnel |
| CN113586123B (en) * | 2021-09-07 | 2022-02-18 | 中国矿业大学(北京) | Adjustable intelligent row-feeding type ventilation system for double-line tunnel |
| CN114046170A (en) * | 2021-11-03 | 2022-02-15 | 中铁第一勘察设计院集团有限公司 | Construction ventilation system for simultaneously operating four faces of ultra-long tunnel by using transverse channel |
| CN114856672A (en) * | 2022-04-27 | 2022-08-05 | 重庆巨能建设集团路桥工程有限公司 | Tunnel construction ventilation method and wind room structure of long and large tunnel series fan |
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