CN214303898U - Novel flat guide type and full transverse type combined ventilation system - Google Patents
Novel flat guide type and full transverse type combined ventilation system Download PDFInfo
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- CN214303898U CN214303898U CN202023166401.4U CN202023166401U CN214303898U CN 214303898 U CN214303898 U CN 214303898U CN 202023166401 U CN202023166401 U CN 202023166401U CN 214303898 U CN214303898 U CN 214303898U
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Abstract
A novel flat guide type and full transverse type combined ventilation system is characterized in that an air shaft and an air tower are arranged in the side wall of a tunnel at the inlet and outlet end of the tunnel, an air tower is arranged in the middle partition wall of the tunnel at the inlet and outlet end of the tunnel, an air feeder is arranged in the air shaft, an exhaust fan is arranged in the air tower, air supply passages 1-3 are arranged in the side wall of the tunnel and communicated with the air shaft, an exhaust passage 1 is arranged in the side wall of the tunnel and communicated with the air tower, air supply holes are arranged at intervals in the inner side wall of the tunnel and communicated with the air supply passages through induced air passages, a safety passage is arranged at the bottom in the middle partition wall of the tunnel, the upper part of the safety passage in the middle partition wall of the tunnel is communicated with the air tower and provided with an exhaust passage 2 and an exhaust passage 3, and the exhaust holes 3 arranged at intervals in the inner side wall of the tunnel and the middle partition wall of the tunnel are communicated with the exhaust passages; this device tunnel air can communicate with the external environment fast, and the pollutant distributes evenly in the tunnel, and the air quality is better, effectively reduces underwater highway tunnel shaft and sets up quantity and avoids building artificial island, reduces the civil engineering expense.
Description
Technical Field
The utility model belongs to the technical field of the equipment of airing exhaust or device are sent in the tunnel, concretely relates to novel flat formula of leading and full transverse type combination ventilation system.
Background
The ventilation system of the road tunnel is developed to date from the transverse ventilation, the semi-transverse ventilation, the full jet flow longitudinal ventilation and the sectional type conveying and discharging longitudinal ventilation which are purely dependent on natural ventilation. With the continuous development of social economy and the continuous progress of the related technology of the tunnel, the ventilation problem of the extra-long road tunnel crossing scenic spots, lakes and sea becomes a technical difficulty increasingly, because the road tunnel crossing scenic spots, lakes and sea is different from a mountain tunnel in the aspects of function positioning, geographical position and the like, and an air shaft cannot be built in the middle section of the tunnel due to environmental evaluation, ecological redline, civil engineering cost and the like. Therefore, when the tunnel of the extra-long road cannot be provided with a vertical shaft for segmentation due to limited terrain, what ventilation and smoke exhaust mode is adopted to ensure the safe operation of the tunnel is an urgent problem to be solved.
Can know through looking up the data, full transverse ventilation mode has that pollutant concentration is even, tunnel visibility is high and the characteristics that the security is good, but to transverse ventilation mode, key technical problem lies in can form equivalent air supply or equivalent and airs exhaust in the tunnel. If the length of the air channel of each end air supply (exhaust) system for bearing transverse ventilation is too long, the difficulty of forming equivalent air supply and exhaust technology in the tunnel by adjusting the opening of the air valve is quite large, and the actual operation result may be that the air supply (exhaust) quantity of the section close to the fan is large, the air quantity of the air port in the middle of the tunnel is small or even no air, and effective ventilation cannot be formed. In the 5-2005 1 month of 2004, the Shanghai subway No. 2 line was modified with a ventilation system, and the station air supply and exhaust system was tested for travel, each fan in the subway station took 1/2 station length of exhaust air, the air duct length was about 80m, and the design required equal amount of air supply or exhaust along the station length. From the actual measurement results of 11 stations, the air speed of the air inlet closest to the fan is as high as 6-7 m/s, the air speed of the air inlet at the end of the air pipe is only 0.5-0.8 m/s, and the air supply and exhaust amount reaches more than 77% of the total air amount at a half of the air pipe stroke. Although the result has little influence on the ventilation effect of the station, it is fatal to the tunnel. Therefore, if the lateral ventilation scheme is considered, the length of the uniform opening borne by the air supply and exhaust duct is not too long. It can be known from case investigation that the length of the air duct for each end air supply (exhaust) system to undertake lateral ventilation is not suitable to exceed 3km, namely, the length of the tunnel exceeds 5km, and then the segmentation treatment is needed.
The parallel pilot tunnel is mainly applied to auxiliary tunnel near-digging construction and special escape channels, and if the parallel pilot tunnel is used as an air channel and is combined with a full transverse ventilation mode, the application length of the full transverse ventilation mode can be prolonged on the basis of not constructing a vertical shaft, so that the problems are solved.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art not enough, provide a reasonable in design, in the tunnel pollutant distribute evenly, the air quality is better, reduce civil engineering expense's novel flat formula of leading and full transverse type combination ventilation system.
The technical scheme for solving the technical problems is as follows: be provided with air shaft and wind tower in tunnel entrance end tunnel lateral wall, be provided with the wind tower in the tunnel entrance end tunnel mid-board, be provided with the forced draught blower in the air shaft, be provided with the exhaust fan in the wind tower, be linked together with the air shaft in the tunnel lateral wall and be provided with 1 ~ 3 air supply ducts, be linked together with the wind tower and be provided with 1 number exhaust duct, the interval is provided with the supply-air hole on the tunnel inside wall, the supply-air hole is linked together with the air supply duct through the induced air way, the bottom is provided with safe passage in the tunnel mid-board, safe passage upper portion is linked together with the wind tower and is provided with No. 2 exhaust ducts and No. 3 exhaust ducts in the tunnel mid-board, the tunnel inside wall, the air exhaust hole that the interval set up on the tunnel mid-board is linked together with the exhaust duct.
The utility model discloses a right side one side b in tunnel mesophragma wall2Segment, left line side b2The section is provided with a No. 3 exhaust duct, and a section a and b are arranged on one side of the left line in the middle partition wall of the tunnel1Segment, segment a on one side of right line and b1The section is provided with No. 2 exhaust ducts, and No. 2 exhaust duct and No. 3 exhaust duct are not intercommunicated.
The utility model discloses a left side line one side a section and right side line one side a section lower part are provided with supply air duct 1 and supply air duct 2 in the tunnel lateral wall, upper portion are provided with the exhaust duct 1, left side line one side b in the tunnel lateral wall1Segment and right side b1The section is provided with a No. 2 air supply duct, and one side b of the left line in the side wall of the tunnel2Segment and right side b2The section is provided with air supply duct No. 3, and air supply duct No. 1, air supply duct No. 2, air supply duct No. 3 are not communicated with each other.
The utility model discloses an air supply hole sets up in tunnel lateral wall lower part, and its height highly suits apart from the road surface with automobile exhaust vent, and the interval between the adjacent air supply hole is 5 ~ 6m, and the area of air supply hole is calculated according to under the biggest required amount of wind condition and when opening entirely that the export wind speed is 6.0 ~ 8.0m/s and confirms.
The utility model discloses a hole of airing exhaust sets up with the supply-air hole is crisscross, and the interval between the adjacent hole of airing exhaust is 2 ~ 3 times of interval between the adjacent supply-air hole, and the area in hole of airing exhaust should be not more than 4.0m/s calculation according to the suction wind speed under the biggest needs amount of wind condition and when opening entirely and confirm.
Compared with the prior art, the utility model has the following advantages;
1. the utility model discloses the tunnel air can communicate with the environment outside the tunnel fast, and the pollutant distributes evenly in the tunnel, and air quality is better.
2. The utility model discloses smog can be followed transverse path through the quick discharge in the wind channel of discharging fume under the conflagration operating mode, avoids smog along the vertical diffusion in tunnel.
3. The utility model discloses the low temperature rise in the tunnel can not cause driving space high temperature in summer, need not carry out corresponding cooling and handles.
4. The utility model discloses can effectively reduce underwater highway tunnel shaft and set up quantity and avoid building artificial island to reduce the civil engineering expense in phase.
5. The utility model discloses a ventilation mode can be applied to and can not be in the tunnel along journey construction shaft's landscape site highway tunnel strides by ecological protection factor restriction, or need build the river lake sea highway tunnel strides of artifical island, inconvenient construction shaft's extra long highway tunnel. Meanwhile, the combined ventilation mode can meet the tunnel ventilation sanitary standard during operation and can also meet the tunnel fire safety standard under the fire working condition.
Drawings
Fig. 1 is a schematic view of the horizontal ventilation of the present invention.
Fig. 2 is a schematic view of a full lateral ventilation mode.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a sectional view B-B of fig. 2.
Fig. 5 is a cross-sectional view C-C of fig. 2.
Fig. 6 is a cross-sectional view D-D of fig. 2.
Fig. 7 is a cross-sectional view E-E of fig. 2.
In the figure: 1. an air shaft; 2. an air supply hole; 3. an air exhaust hole; 4. a wind tower.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited to these examples.
Example 1
In fig. 2-7, the utility model relates to a novel flat formula of leading and full transverse type combination ventilation system segments the tunnel, and the control unilateral is sent the length of airing exhaust and is no longer than 3 km. Be provided with air shaft 1 and wind tower 4 in tunnel entrance end tunnel lateral wall, install large-scale forced draught blower in the air shaft 1, be provided with wind tower 4 in the tunnel entrance end tunnel mid-board, install large-scale exhaust fan in the wind tower 4, be linked together with air shaft 1 in the tunnel lateral wall and be provided with supply air duct 1 and supply air duct 2 and 3, be linked together with wind tower 4 and be provided with exhaust duct 1, the bottom is provided with the safe passageway in the tunnel mid-board, safe passageway upper portion is linked together with wind tower 4 in the tunnel mid-board and is provided with exhaust duct 2 and exhaust duct 3, as shown in figure 1, supply air duct and exhaust duct ventilation air current transverse flow are perpendicular with the driving direction in the tunnel. And by adopting full transverse ventilation, the path through which pollutants are discharged is short, and air in the tunnel can be quickly communicated with the environment outside the tunnel. The advantage of full lateral ventilation is that the utility of the ambient air is maximized. If a fire occurs, smoke is quickly exhausted along a transverse path through the exhaust duct, and the fire cannot be quickly diffused in a short time. Under the fire working condition, people are evacuated through the safety channel.
The air supply holes 2 are uniformly distributed on the inner side wall of the tunnel at intervals in the length direction of the tunnel, the air supply holes 2 are communicated with the air supply duct through an air guide duct, the air supply holes 2 are arranged at the lower part of the side wall of the tunnel, the height of the air supply holes 2 is matched with the height of the automobile exhaust pipe from the road surface, the distance between every two adjacent air supply holes 2 is 5-6 m, and the area of each air supply hole 2 is calculated and determined according to the maximum air volume requirement and the outlet air speed of the air supply holes 2 in the full-open state of 6.0-8.0 m/s. The hole of airing exhaust 3 that the interval set up on tunnel inside wall, the tunnel mesophragma is linked together with the exhaust airway, and the hole of airing exhaust 3 sets up with supply-air hole 2 is crisscross, and the interval between the adjacent hole of airing exhaust 3 is 2 ~ 3 times of interval between the adjacent supply-air hole 2, and the area of the hole of airing exhaust 3 should be according to under the biggest requirement amount of wind condition and the suction wind speed when opening entirely is not more than 4.0m/s calculation and confirms.
Further, one side b of the inner right line of the middle partition wall in the tunnel2Segment, left line side b2The section is provided with a No. 3 exhaust duct, and the No. 3 exhaust duct is discharged from one side b of the right line of the tunnel2Segment and tunnel left side line b2Waste gas of the section, a section and b on one side of the left line in the middle partition wall of the tunnel1Segment, segment a on one side of right line and b1The section is provided with a No. 2 exhaust duct, and the No. 2 exhaust duct discharges a section a and b on one side of the right line of the tunnel1Segment, left line side a segment and b1Exhaust gas of section, No. 2 exhaust duct and No. 3 exhaust duct are not communicated with each other, b2Segment and a and b1The section exhaust gas operates independently. No. 1 air supply duct and No. 2 air supply duct are arranged on the lower portions of the section a on one side of the left line and the section a on one side of the right line in the tunnel side wall, No. 1 exhaust duct is arranged on the upper portions of the sections, No. 1 air supply duct supplies air to the section a of the tunnel on the left line and the section a of the tunnel on the right line, and No. 2 exhaust duct supplies air to the section a of the tunnel on the left line and the section a of the tunnel on the right lineAir supply duct left line feeding tunnel b1Segment and right tunnel b1Section air supply, No. 1 exhaust duct discharges the waste gas of section a on one side of left line and section a on one side of right line, and side b of left line in the side wall of tunnel1Segment and right side b1The section is provided with a No. 2 air supply duct, and the No. 2 air supply duct supplies air to a left tunnel b1Segment and right tunnel b1Segment air supply, left line side b in tunnel side wall2Segment and right side b2The section is provided with a No. 3 air supply duct, and the No. 3 air supply duct supplies air to the left tunnel b2Segment and right tunnel b2The section air supply is divided into a section a and a section b, the No. 1 air supply duct, the No. 2 air supply duct and the No. 3 air supply duct are not communicated with each other, and the whole tunnel is divided into the section a and the section b1Segment b2And (3) air supply is performed in three sections, and each section of air supply operates independently.
Claims (5)
1. The utility model provides a novel flat formula of leading and full transverse type combination ventilation system which characterized in that: be provided with air shaft (1) and wind tower (4) in tunnel entrance end tunnel lateral wall, be provided with wind tower (4) in the tunnel entrance end tunnel mid-board, be provided with the forced draught blower in air shaft (1), be provided with the exhaust fan in wind tower (4), be linked together with air shaft (1) in the tunnel lateral wall and be provided with 1 ~ 3 air supply ducts, be provided with No. 1 exhaust duct with wind tower (4) are linked together, the interval is provided with supply-air hole (2) on the tunnel inside wall, supply-air hole (2) are linked together with the air supply duct through the induced air way, the bottom is provided with safe passageway in the tunnel mid-board, safe passageway upper portion is linked together with wind tower (4) and is provided with No. 2 exhaust duct and No. 3 exhaust duct in the tunnel mid-board, the tunnel inside wall, air discharge hole (3) that the interval set up on the tunnel mid-wall are linked together with the exhaust duct.
2. The new combined flat and full lateral ventilation system of claim 1, wherein: one side b of the right line in the middle partition wall of the tunnel2Segment, left line side b2The section is provided with a No. 3 exhaust duct, and a section a and b are arranged on one side of the left line in the middle partition wall of the tunnel1Segment, segment a on one side of right line and b1The section is provided with No. 2 exhaust ducts, and No. 2 exhaust duct and No. 3 exhaust duct are not intercommunicated.
3. According to the rightThe novel combined flat guide and full transverse ventilation system as claimed in claim 1, wherein: the lower parts of the section a at one side of the left line and the section a at one side of the right line in the side wall of the tunnel are provided with a No. 1 air supply duct and a No. 2 air supply duct, the upper part of the side wall of the tunnel is provided with a No. 1 exhaust duct, and the side b at one side of the left line in the side wall of the tunnel1Segment and right side b1The section is provided with a No. 2 air supply duct, and one side b of the left line in the side wall of the tunnel2Segment and right side b2The section is provided with air supply duct No. 3, and air supply duct No. 1, air supply duct No. 2, air supply duct No. 3 are not communicated with each other.
4. The new combined flat and full lateral ventilation system of claim 1, wherein: the air supply holes (2) are arranged on the lower portion of the side wall of the tunnel, the height of each air supply hole is matched with the distance between the automobile exhaust pipe and the road surface, the distance between every two adjacent air supply holes (2) is 5-6 m, and the area of each air supply hole (2) is determined by calculation according to the maximum air volume requirement condition and the outlet air speed of the air supply holes when the air supply holes are fully opened is 6.0-8.0 m/s.
5. The new combined flat and full lateral ventilation system of claim 4, wherein: the air exhaust holes (3) and the air supply holes (2) are arranged in a staggered mode, the distance between every two adjacent air exhaust holes (3) is 2-3 times that between every two adjacent air supply holes (2), and the area of each air exhaust hole (3) is determined according to the calculation that the suction air speed is not more than 4.0m/s under the condition of maximum air quantity demand and when the air exhaust holes are fully opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023166401.4U CN214303898U (en) | 2020-12-24 | 2020-12-24 | Novel flat guide type and full transverse type combined ventilation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023166401.4U CN214303898U (en) | 2020-12-24 | 2020-12-24 | Novel flat guide type and full transverse type combined ventilation system |
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| Publication Number | Publication Date |
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| CN214303898U true CN214303898U (en) | 2021-09-28 |
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| CN202023166401.4U Active CN214303898U (en) | 2020-12-24 | 2020-12-24 | Novel flat guide type and full transverse type combined ventilation system |
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