Vacuum drainage system of tunnel

Abstract

The utility model relates to the technical field of tunnel drainage construction, and discloses a tunnel vacuum drainage system which is characterized in that a plurality of annular drainage blind pipes are arranged on the inner wall of a tunnel; the pair of first drainage ditches is arranged on the two sides of the bottom face of the tunnel, the first drainage ditches communicate with first drainage pipes through a plurality of first communicating pipelines, and the first drainage pipes communicate with the annular drainage blind pipes. The second drainage ditch is arranged in the middle of the bottom surface of the tunnel, the second drainage ditch is communicated with a second drainage pipe through a plurality of second communicating pipelines, the second drainage pipe is communicated with the pair of first drainage pipes through third communicating pipelines, and the second drainage pipe is further communicated with a plurality of pressure discharge pipes; the vacuum tank is communicated with a vacuum pump and a vacuum lifter through vacuum pipelines, the vacuum lifter is communicated with a pair of first drainage pipe and second drainage pipe, and the device can be applied to water-rich mountainous areas with very complex terrains and extreme rainfall environments.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel drainage construction, in particular to a vacuum drainage system for a tunnel. Background Technique

[0002] Building a tunnel in a water-rich mountainous area breaks the balance of the original mountain water system, making the tunnel a channel for groundwater accumulation in the mountain body it passes through. Usually, waterproof and drainage measures need to be taken for the tunnel. The existing tunnel drainage measure is to artificially set up a drainage system and set drainage ditches in the mountain tunnel to drain the groundwater out of the tunnel. However, this drainage measure belongs to passive drainage, with low drainage efficiency and inability to collect and utilize water, resulting in waste of water resources. As more and more tunnels pass through water-rich mountain environments, the engineering geology and hydrogeology of the mountain bodies passed through by the tunnels vary greatly due to large differences in regional natural conditions, and the challenges of tunnel waterproofing and drainage are gradually increasing. If in a very complex terrain water-rich mountain area and encountering an extreme rainfall environment, factors such as large water volume and complex terrain will restrict the water in the tunnel surrounding rock from being drained in time, which is extremely likely to induce tunnel leakage, resulting in serious consequences such as tunnel flooding and threatening traffic safety. Content of the Utility Model

[0003] The purpose of the utility model is to provide a vacuum drainage system for a tunnel, aiming to solve or improve at least one of the above technical problems.

[0004] To achieve the above purpose, the utility model provides the following scheme: The utility model provides a vacuum drainage system for a tunnel, which is characterized by including:

[0005] A plurality of circumferential drainage blind pipes are arranged on the inner wall of the tunnel;

[0006] A pair of first drainage channels are arranged on both sides of the bottom surface of the tunnel. The first drainage channels are connected to a first drainage pipe through a plurality of first communication pipelines, and the first drainage pipe is connected to a plurality of the circumferential drainage blind pipes;

[0007] A second drainage channel is arranged in the middle of the bottom surface of the tunnel. The second drainage channel is connected to a second drainage pipe through a plurality of second communication pipelines, and the second drainage pipe is respectively connected to a pair of the first drainage pipes through a third communication pipeline. A plurality of pressure relief pipes are also connected to the second drainage pipe;

[0008] A vacuum tank is respectively connected to a vacuum pump and a vacuum lifter through a vacuum pipeline. The vacuum lifter is connected to a pair of the first drainage pipes and the second drainage pipe through a fourth communication pipeline and a plurality of branch pipelines connected to the fourth communication pipeline.

[0009] Optionally, a vacuum diaphragm valve is arranged on the vacuum pipeline between the vacuum tank and the vacuum lifter.

[0010] Optionally, a drain pump is connected to the vacuum tank through a fifth communication pipeline.

[0011] Optionally, it further includes a power supply module connected to the vacuum pump.

[0012] Optionally, it further includes an intelligent control module connected to the vacuum pump.

[0013] Optionally, water pressure sensors and drain valves are provided at the end of the circumferential drain blind pipe close to the first drain pipe, the first communication pipeline, the second communication pipeline, the third communication pipeline, the branch pipeline and the pressure relief pipe.

[0014] Optionally, multiple circumferential drain blind pipes, multiple first communication pipelines, multiple third communication pipelines and multiple pressure relief pipes are arranged at intervals of five meters along the longitudinal direction of the tunnel.

[0015] Optionally, it further includes a primary support provided on the bedrock surface of the tunnel. A secondary lining is provided on the primary support. The circumferential drain blind pipe is located between the primary support and the secondary lining, and multiple primary support drill holes for communicating with the circumferential drain blind pipe are provided on the primary support.

[0016] The present utility model discloses the following technical effects: Through diversion structures such as multiple circumferential drain blind pipes, a pair of first drainage channels, a first drain pipe, a second drainage channel and a second drain pipe, it can cope with the diversion of large-flow water bodies, with flexible layout, saving construction costs, and when the water volume is large, the air in the vacuum tank is pumped out by a vacuum pump to keep the vacuum tank and the vacuum pipeline in a negative pressure state. When the water level in the vacuum lifter reaches a certain height, the water is sucked into the vacuum pipeline due to the negative pressure and finally converges into the vacuum tank. Due to the existence of the vacuum, the disadvantages of traditional gravity drainage affected by terrain can be overcome, greatly increasing the drainage speed, greatly improving the tunnel drainage efficiency, ensuring tunnel safety, and being able to cope with water-rich mountainous areas with very complex terrain and extreme rainfall environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0018] Figure 1 is the layout schematic diagram of the present utility model in the tunnel;

[0019] Figure 2 is the connection schematic diagram of the vacuum tank of the present utility model;

[0020] Figure 3It is a partial perspective view of the present utility model;

[0021] Figure 4 It is a schematic structural view of the circumferential drainage blind pipe of the present utility model.

[0022] In the figure: 1, circumferential drainage blind pipe; 2, first drainage ditch; 3, first communication pipeline; 4, first drainage pipe; 5, second drainage ditch; 6, second communication pipeline; 7, second drainage pipe; 8, third communication pipeline; 9, pressure relief pipe; 10, vacuum tank; 11, vacuum pipeline; 12, vacuum pump; 13, vacuum lifter; 14, fourth communication pipeline; 15, branch pipeline; 16, vacuum diaphragm valve; 17, fifth communication pipeline; 18, drainage pump; 19, power supply module; 20, intelligent control module; 21, water pressure sensor; 22, primary support; 23, bedrock surface; 24, secondary lining; 25, primary support drilling. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Referring to Figures 1 - 4 , the present utility model provides a vacuum drainage system for a tunnel, including:

[0026] A plurality of circumferential drainage blind pipes 1 are arranged on the inner wall of the tunnel;

[0027] A pair of first drainage ditches 2 are arranged on both sides of the bottom surface of the tunnel. The first drainage ditches 2 are connected to a first drainage pipe 4 through a plurality of first communication pipelines 3, and the first drainage pipe 4 is connected to a plurality of circumferential drainage blind pipes 1;

[0028] A second drainage ditch 5 is arranged in the middle of the bottom surface of the tunnel. The second drainage ditch 5 is connected to a second drainage pipe 7 through a plurality of second communication pipelines 6. The second drainage pipe 7 is respectively connected to a pair of first drainage pipes 4 through a third communication pipeline 8, and a plurality of pressure relief pipes 9 are also connected to the second drainage pipe 7;

[0029] A vacuum tank 10 is respectively connected to a vacuum pump 12 and a vacuum lifter 13 through a vacuum pipeline 11. The vacuum lifter 13 is connected to a pair of first drain pipes 4 and second drain pipes 7 through a fourth communication pipeline 14 and a plurality of branch pipelines 15 connected to the fourth communication pipeline 14.

[0030] Through a plurality of circumferential drainage blind pipes 1, a pair of first drainage channels 2, a first drain pipe 4, a second drainage channel 5, a second drain pipe 7 and other diversion structures, it is possible to divert large-flow water bodies. The layout is flexible, the construction cost is saved, and when the water volume is large, the air in the vacuum tank 10 is pumped out by the vacuum pump 12 to keep the vacuum tank 10 and the vacuum pipeline 11 in a negative pressure state. When the water level in the vacuum lifter 13 reaches a certain height, the water is sucked into the vacuum pipeline 11 due to the negative pressure and finally converges into the vacuum tank 10. Due to the existence of the vacuum, the disadvantage of traditional gravity drainage affected by terrain can be overcome, the drainage speed is greatly increased, the tunnel drainage efficiency is greatly improved, the tunnel safety is guaranteed, and it can cope with water-rich mountainous areas with very complex terrain and extreme rainfall environments.

[0031] In a further optimized solution, a vacuum diaphragm valve 16 is provided on the vacuum pipeline 11 between the vacuum tank 10 and the vacuum lifter 13. The vacuum diaphragm valve 16 is used to control the on-off between the vacuum tank 10 and the vacuum lifter 13.

[0032] In a further optimized solution, the vacuum tank 10 is connected to a drainage pump 18 through a fifth communication pipeline 17. The drainage pump 18 can drain the water in the vacuum tank 10 into an external rainwater collection system, and the collected rainwater can be used for irrigation or other reuse ways, which can realize the recycling of resources.

[0033] In a further optimized solution, it further includes a power supply module 19, which is connected to the vacuum pump 12. The power supply module 19 uses solar power supply, reduces the dependence on traditional energy sources, reduces energy consumption and operating costs, and at the same time has the ability to independently supply power to the vacuum pump 12 to ensure the stable operation of the drainage system.

[0034] In a further optimized solution, it further includes an intelligent control module 20, which is connected to the vacuum pump 12. The intelligent control module 20 is equipped with sensors and remote monitoring devices, which can real-time monitor the water level inside the tunnel and the operating state of the drainage system, and realize intelligent drainage adjustment by controlling the vacuum pump 12.

[0035] For a further optimized solution, water pressure sensors 21 and drain valves are provided on the end of the circumferential drain blind pipe 1 close to the first drain pipe 4, the first connecting pipeline 3, the second connecting pipeline 6, the third connecting pipeline 8, the pressure relief pipe 9, and the branch pipeline 15. The water pressure sensor 21 can automatically sense the drainage pressure and cooperate with the drain valve to control the on-off state of each pipeline. Once the water pressure exceeds the set threshold of 0.1 MPa, the water pressure sensor 21 will be automatically opened to connect all the pipelines for drainage, ensuring the smooth operation of the tunnel drainage system.

[0036] For a further optimized solution, multiple circumferential drain blind pipes 1, multiple first connecting pipelines 3, multiple second connecting pipelines 6, multiple third connecting pipelines 8, and multiple pressure relief pipes 9 are arranged at intervals of five meters along the longitudinal direction of the tunnel.

[0037] For a further optimized solution, it further includes an initial support 22 provided on the bedrock surface 23 of the tunnel. A secondary lining 24 is provided on the initial support 22. The circumferential drain blind pipe 1 is located between the initial support 22 and the secondary lining 24, and multiple primary support drill holes 25 for communicating with the circumferential drain blind pipe 1 are provided on the initial support 22. The construction process of the circumferential drain blind pipe 1 is to drill the primary support drill holes 25 after constructing the initial support 22 on the bedrock surface 23, then install the circumferential drain blind pipe 1 along the tunnel arch wall, and finally construct the secondary lining 24.

[0038] Working principle: After the groundwater outside the tunnel seeps into the circumferential drain blind pipe 1 along the bedrock surface 23, it flows into the first drain pipe 4 inside the tunnel under the action of gravity. The groundwater at the bottom of the tunnel enters the second drain pipe 7 along the pressure relief pipe 9; when there is water seepage inside the tunnel, the accumulated water inside the tunnel flows into a pair of first drain pipes 4 through a pair of first drainage channels 2 respectively, and flows into the second drain pipe 7 through the second drainage channel 5. When the water volume is large, the third connecting pipeline 8 is opened to share the drainage pressure. When the water pressure in the first drain pipe 4 and the second drain pipe 7 reaches the set value, the water pressure sensor 21 on the branch pipeline 15 is opened, and the water flows into the vacuum lifter 13. At the same time, when it is detected that the water volume is large, the intelligent control module 20 controls the vacuum pump 12 to start. The power supply module 19 provides power, and the vacuum pump 12 starts to pump out the air in the vacuum tank 10, keeping the vacuum tank 10 and the vacuum pipeline 11 in a negative pressure state. When the water level in the vacuum lifter 13 reaches a certain height, the vacuum diaphragm valve 16 is opened, and the water is sucked into the vacuum pipeline 11 due to the negative pressure. Due to the existence of the vacuum, the drainage speed of the first drain pipe 4 and the second drain pipe 7 is greatly increased, and finally it is collected in the vacuum tank 10, and the water is discharged through the drainage pump 18 for collection and utilization.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0040] The above-described embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A vacuum drainage system for a tunnel, characterized in that, Including: A plurality of circumferential drainage blind pipes (1) are arranged on the inner wall of the tunnel; A pair of first drainage channels (2) are arranged on both sides of the bottom surface of the tunnel. The first drainage channels (2) are connected to a first drain pipe (4) through a plurality of first connecting pipes (3), and the first drain pipe (4) is connected to the plurality of circumferential drainage blind pipes (1); A second drainage channel (5) is arranged in the middle of the bottom surface of the tunnel. The second drainage channel (5) is connected to a second drain pipe (7) through a plurality of second connecting pipes (6). The second drain pipe (7) is respectively connected to the pair of first drain pipes (4) through a third connecting pipe (8), and a plurality of pressure relief pipes (9) are also connected to the second drain pipe (7); A vacuum tank (10) is respectively connected to a vacuum pump (12) and a vacuum lifter (13) through a vacuum pipe (11). The vacuum lifter (13) is connected to the pair of first drain pipes (4) and the second drain pipe (7) through a fourth connecting pipe (14) and a plurality of branch pipes (15) connected to the fourth connecting pipe (14).

2. The vacuum drainage system for a tunnel according to claim 1, characterized in that: A vacuum diaphragm valve (16) is arranged on the vacuum pipe (11) between the vacuum tank (10) and the vacuum lifter (13).

3. The vacuum drainage system for a tunnel according to claim 1, wherein: The vacuum tank (10) is connected to a drainage pump (18) through a fifth connecting pipe (17).

4. The vacuum drainage system for a tunnel according to claim 1, characterized in that: It further includes a power supply module (19) connected to the vacuum pump (12).

5. A vacuum drainage system for a tunnel according to claim 1, characterized in that: It further includes an intelligent control module (20) connected to the vacuum pump (12).

6. The vacuum drainage system for a tunnel according to claim 1, wherein: Water pressure sensors (21) and drainage valves are arranged on the end of the circumferential drainage blind pipe (1) close to the first drain pipe (4), the first connecting pipe (3), the second connecting pipe (6), the third connecting pipe (8), the pressure relief pipe (9), and the branch pipe (15).

7. The vacuum drainage system for a tunnel according to claim 1, characterized in that: The plurality of circumferential drainage blind pipes (1), the plurality of first connecting pipes (3), the plurality of second connecting pipes (6), the plurality of third connecting pipes (8), and the plurality of pressure relief pipes (9) are arranged at intervals of five meters along the longitudinal direction of the tunnel.

8. The vacuum drainage system for a tunnel according to claim 1, characterized in that: It further includes a primary support (22) arranged on the bedrock surface (23) of the tunnel. A secondary lining (24) is arranged on the primary support (22). The circumferential drainage blind pipe (1) is located between the primary support (22) and the secondary lining (24), and a plurality of primary support drill holes (25) for communicating with the circumferential drainage blind pipe (1) are provided on the primary support (22).

Images