Ventilation and rescue system and construction method suitable for mountain highway tunnel groups

Abstract

The present invention discloses a ventilation and rescue system and a construction method suitable for a mountain highway tunnel group, wherein the ventilation and rescue system comprises a platform bridge, an exhaust duct and an air supply duct; the platform bridge is used to connect the main line bridges on both sides, and the upper end surface of the platform bridge is provided with a containing structure, the containing structure comprises an upper space and a lower space, the lower space is used for traffic conversion and road rescue passage, and the upper space is provided with a plurality of fans; the exhaust duct is used to connect the fan and the upstream tunnel; the air supply duct is used to connect the fan and the downstream tunnel. The system of the present invention avoids the problem of setting up an underground fan room, a traffic conversion zone in the cave, and the cross-flow of polluted air between the upstream tunnel and the downstream tunnel, and can not only realize tunnel ventilation and rescue, but also has the advantages of small project scale, low construction risk, and low cost investment.

Description

Technical Field

[0001] The present invention relates to the technical field of highway tunnel operation ventilation, and in particular to a ventilation and rescue system and a construction method suitable for a highway tunnel group in a mountainous area. Background Art

[0002] When cars pass through a tunnel, they will continuously emit exhaust gas into the tunnel. When the tunnel is relatively short, the exhaust gas will not accumulate too high in the tunnel due to the influence of natural wind and traffic wind; when the tunnel is long, the exhaust gas will accumulate in the tunnel. When the exhaust gas concentration reaches a certain level, it will affect people's comfort and reduce visibility in the tunnel.

[0003] Longitudinal segmented mechanical ventilation that uses fan rooms for segmented air supply and exhaust is currently the most commonly used method to solve the above problems in long and large highway tunnels. Fan rooms are divided into underground fan rooms and above-ground fan rooms. Above-ground fan rooms are low-cost, but for mountain highway tunnels in complex environments, there are often no conditions for setting up ground fan rooms; underground fan rooms are large-scale projects, have high construction risks, and high cost investments.

[0004] With the construction of highways in the dangerous mountainous areas in the west, more and more super-long tunnel groups have begun to appear. The distance between tunnels is extremely short, and the narrow space at the outcropping of the tunnel is mostly a deep valley. The main line of the highway is crossed by building bridges. In order to ensure operational safety, a sunshade is often required above the bridge. The left and right lines of the super-long tunnel group are separated, and once an accident occurs, rescue is difficult; and the setting of the sunshade causes the polluted air in the upstream tunnel to not be effectively discharged at the outcropping section, and most of it directly enters the downstream tunnel, directly affecting the ventilation of the downstream tunnel. Therefore, ventilation and rescue are urgent problems that need to be solved for long tunnel groups on mountain highways.

[0005] Traffic conversion between left and right tunnels can be achieved by setting up traffic conversion belts in the tunnels, and longitudinal segmented ventilation of the tunnel group can be achieved by setting up underground fan rooms. However, both have the characteristics of large project scale, high construction risk and high cost investment. Summary of the invention

[0006] The purpose of the present invention is to provide a ventilation and rescue system suitable for mountain highway tunnel groups. The system avoids the problem of setting up underground fan rooms, traffic transfer zones in the tunnel, and the cross-flow of polluted air between upstream tunnels and downstream tunnels. It can not only realize tunnel ventilation and rescue, but also has the advantages of small project scale, low construction risk and low cost investment.

[0007] In addition, the present invention also provides a method for constructing the ventilation and rescue system.

[0008] The present invention is achieved through the following technical solutions:

[0009] Suitable for ventilation and rescue systems of mountain highway tunnels, including platform bridges, exhaust ducts and air supply ducts;

[0010] The platform bridge is used to connect the main line bridges on both sides. The upper end surface of the platform bridge is provided with a containing structure, and the containing structure includes an upper space and a lower space. The lower space is used for traffic conversion and road rescue passage, and the upper space is provided with a plurality of fans;

[0011] The exhaust duct is used to connect the fan and the upstream tunnel;

[0012] The air supply duct is used to connect the fan and the downstream tunnel.

[0013] The upstream tunnel and the downstream tunnel described in the present invention are relative to the driving direction of the car in the tunnel, and are respectively downstream and upstream along the driving direction of the car, and the downstream and upstream are opposite in different directions (tunnels of the left line and the right line). The upstream tunnel and the downstream tunnel are connected by a main line bridge, and the main line bridge is set in the middle of a narrow valley between two mountains. The two sides specifically refer to the left line and the right line, and the main line bridges on both sides refer to the structures used to connect the left line and the right line upstream tunnel and the downstream tunnel.

[0014] The present invention utilizes the narrow valley section between two tunnels to set up a platform bridge as a traffic conversion space and a fan equipment space, and realizes segmented ventilation and rescue communication of the tunnel group through exhaust ducts and air supply ducts.

[0015] The present invention realizes segmented ventilation of a tunnel group by arranging exhaust ducts and air supply ducts, thereby solving the problem of ventilation cross-flow in an ultra-long tunnel group.

[0016] The system engineering of the present invention is small in scale and engineering risk, and the fan equipment and the like are close to the main line of the tunnel, so the operation and maintenance cost is low.

[0017] Furthermore, the exhaust duct and the supply duct correspond to different fans.

[0018] Further, the fan connected to the exhaust duct is connected to the exhaust tower.

[0019] Furthermore, the upper space also includes an equipment storage room.

[0020] The equipment storage room is used to store other equipment.

[0021] Furthermore, both the exhaust duct and the supply duct are L-shaped structures, one end of the L-shaped structure is connected to the fan, and the other end is connected to the upstream tunnel or the downstream tunnel.

[0022] Furthermore, the fan is arranged at a height greater than or equal to the top of the upstream tunnel or the downstream tunnel.

[0023] Furthermore, the exhaust duct and the supply duct are communicated with ventilation holes arranged on the side wall of the upstream tunnel or the downstream tunnel.

[0024] Furthermore, the angle between the platform bridge and the main line bridge is greater than 90° or less than 90°.

[0025] That is, the platform bridge and the main line bridge are not set vertically, which is convenient for vehicles to turn from the main line bridge to the platform bridge.

[0026] A method for constructing a ventilation and rescue system suitable for a mountain highway tunnel group comprises the following steps:

[0027] 1) Build a platform bridge between the main line bridges on both sides to connect the left line and the right line as a whole;

[0028] 2) A receiving structure is arranged on the upper end surface of the platform bridge, the receiving structure includes an upper space and a lower space, the lower space is used for traffic conversion and road rescue passage, and the upper space is provided with a plurality of fans;

[0029] 3) An exhaust duct is provided for connecting the ventilation fan and the upstream tunnel, and an air supply duct is provided for connecting the ventilation fan and the downstream tunnel.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] 1. The present invention utilizes the narrow valley section between two tunnels to set up a platform bridge as a traffic conversion space and a fan equipment space, and realizes segmented ventilation and rescue communication of the tunnel group through exhaust ducts and air supply ducts.

[0032] 2. The present invention realizes segmented ventilation of the tunnel group by setting exhaust ducts and air supply ducts, thereby solving the problem of ventilation cross-flow in super-long tunnel groups.

[0033] 3. The system engineering of the present invention is small in scale and engineering risk, and the fan equipment and the like are close to the main line of the tunnel, so the operation and maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0035] Figure 1 The cross-sectional diagram of the overall layout is shown below;

[0036] Figure 2 Schematic diagram of tunnel ventilation.

[0037] Marks and corresponding parts names in the attached drawings:

[0038] 1-upstream tunnel, 2-main line bridge, 3-platform bridge, 4-exhaust duct, 5-air supply duct, 6-fan, 7-exhaust tower, 8-equipment storage room, 9-downstream tunnel. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0040] Embodiment 1:

[0041] like Figure 1 , Figure 2 As shown, Figure 2 The arrows in the middle tunnel indicate the driving method of the car, and the arrows in the exhaust duct 4 and the air supply duct indicate the wind direction.

[0042] A ventilation and rescue system suitable for mountain highway tunnels, including a platform bridge 3, an exhaust duct 4 and an air supply duct 5;

[0043] The platform bridge 3 is used to connect the main line bridges 2 on both sides. The upper end surface of the platform bridge 3 is provided with a containing structure, and the containing structure includes an upper space and a lower space. The lower space is used for traffic conversion and road rescue passage. The upper space is provided with a plurality of fans 6. The upper space also includes an equipment storage room 8. The equipment storage room 8 is used to install and place other equipment. Specifically, the containing structure includes an inverted U-shaped structure. Both ends of the U-shaped structure are connected to the upper end surface of the platform bridge 3. A lower space is formed between the U-shaped structure and the platform bridge 3. A closed space is provided on the top of the U-shaped structure. The closed space is divided into a plurality of small spaces by partitions. The fan 6 is independently placed in a small space.

[0044] The exhaust duct 4 is used to connect the fan 6 and the upstream tunnel 1;

[0045] The air supply duct 5 is used to connect the fan 6 and the downstream tunnel 9;

[0046] The exhaust duct 4 and the air supply duct 5 correspond to different fans 6 , and the fan 6 connected to the exhaust duct 4 is connected to the exhaust tower 7 .

[0047] In this embodiment, the main line bridges 2 of the shorter left and right lines between the tunnels are connected through the platform bridge 3, and a containing structure with an upper space and a lower space is arranged on the main line bridge 2. The lower space is used as a communication channel to realize the traffic conversion of the left and right lines. The upper space is used as a fan room, and the fan 6 is connected with the tunnel 1 by setting an exhaust duct 4 and an air supply duct 5. The polluted air of the upstream tunnel 1 is discharged from the upstream tunnel 1 through the fan 6 and the exhaust duct 4, and is discharged through the exhaust tower 7 on the platform bridge 3. The fresh air is pressed into the downstream tunnel 9 through the fan 6 and the air supply duct 5 to realize the internal ventilation of the tunnel group.

[0048] Embodiment 2:

[0049] like Figure 1 , Figure 2 As shown, this embodiment is based on embodiment 1, and the exhaust duct 4 and the air supply duct 5 are both L-shaped structures, one end of the L-shaped structure is connected to the fan 6, and the other end is connected to the upstream tunnel 1 or the downstream tunnel 9; the setting height of the fan 6 is greater than or equal to the top of the upstream tunnel 1 or the downstream tunnel 9; the exhaust duct 4 and the air supply duct 5 are connected to the ventilation holes set on the side walls of the upstream tunnel 1 or the downstream tunnel 9.

[0050] In this embodiment, the shorter end of the L-shaped structure is connected to the upstream tunnel 1 or the downstream tunnel 9, ensuring that the arrangement of the exhaust duct 4 and the air supply duct 5 will not affect the normal use of the upstream tunnel 1 or the downstream tunnel 9. At the same time, the arrangement of this embodiment is more conducive to ventilation inside the tunnel group.

[0051] Embodiment 3:

[0052] like Figure 1 , Figure 2 As shown, this embodiment is based on Embodiment 1 or Embodiment 2, and the angle between the platform bridge 3 and the main line bridge 2 is greater than 90° or less than 90°, that is, the platform bridge 3 and the main line bridge 2 are not arranged vertically, which facilitates the turning of the vehicle from the main line bridge 2 to the platform bridge 3.

[0053] A method for constructing a ventilation and rescue system applicable to a mountain highway tunnel group as described in any one of Embodiments 1 to 3 comprises the following steps:

[0054] 1) Build a platform bridge 3 between the main line bridges 2 on both sides to connect the left line and the right line as a whole;

[0055] 2) A receiving structure is arranged on the upper end surface of the platform bridge 3, the receiving structure comprising an upper space and a lower space, the lower space is used for traffic conversion and road rescue passage, and the upper space is provided with a plurality of fans 6;

[0056] 3) An exhaust duct 4 is provided for connecting the ventilation fan 6 and the upstream tunnel 1, and an air supply duct 5 is provided for connecting the ventilation fan 6 and the downstream tunnel 9.

[0057] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Suitable for ventilation and rescue systems in mountain highway tunnels, characterized by: It comprises a platform bridge (3), an exhaust duct (4) and an air supply duct (5); The platform bridge (3) is used to connect two main line bridges (2) on both sides, and the main line bridge (2) has tunnel spaces on both sides along the bridge, and the tunnel space includes a downstream tunnel and an upstream tunnel arranged along the direction of vehicle travel, and the upstream tunnel and the downstream tunnel are connected through the main line bridge; the upper end surface of the platform bridge (3) is provided with a containing structure, and the containing structure includes an upper space and a lower space, and the lower space is used for traffic conversion and road rescue passage, and the upper space is provided with a plurality of fans (6); The exhaust duct (4) is used to connect the fan (6) and the upstream tunnel (1); The air supply duct (5) is used to connect the fan (6) and the downstream tunnel (9). The exhaust duct (4) and the air supply duct (5) correspond to different fans (6); The fan (6) connected to the exhaust duct (4) is connected to the exhaust tower (7).

2. The ventilation and rescue system for mountain highway tunnels according to claim 1, characterized in that: The upper space also includes an equipment storage room (8).

3. The ventilation and rescue system for mountain highway tunnels according to claim 1, characterized in that: The exhaust duct (4) and the air supply duct (5) are both L-shaped structures, one end of the L-shaped structure is connected to the fan (6), and the other end is connected to the upstream tunnel (1) or the downstream tunnel (9).

4. The ventilation and rescue system for mountain highway tunnels according to claim 1, characterized in that: The fan (6) is arranged at a height greater than or equal to the top of the upstream tunnel (1) or the downstream tunnel (9).

5. The ventilation and rescue system for mountain highway tunnels according to any one of claims 1 to 4, characterized in that: The exhaust duct (4) and the supply duct (5) are in communication with ventilation holes arranged on the side wall of the upstream tunnel (1) or the downstream tunnel (9).

6. A method for constructing a ventilation and rescue system suitable for a mountain highway tunnel group as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: 1) Building a platform bridge (3) between the main line bridges (2) on both sides to connect the left line and the right line as a whole; 2) A receiving structure is arranged on the upper end surface of the platform bridge (3), the receiving structure comprising an upper space and a lower space, the lower space is used for traffic conversion and road rescue passage, and the upper space is provided with a plurality of fans (6); 3) An exhaust duct (4) is provided for connecting the ventilation fan (6) and the upstream tunnel (1), and an air supply duct (5) is provided for connecting the ventilation fan (6) and the downstream tunnel (9).

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