CN219220512U

CN219220512U - Device for extracting sediment in tunnel drain pipe

Info

Publication number: CN219220512U
Application number: CN202320801953.2U
Authority: CN
Inventors: 柏庆宝; 陈松洲
Original assignee: Road and Bridge International Co Ltd; China Communication South Road and Bridge Co Ltd
Current assignee: Road and Bridge International Co Ltd; China Communication South Road and Bridge Co Ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-06-20
Anticipated expiration: 2033-04-12

Abstract

The utility model belongs to the technical field of tunnel drainage, and particularly relates to a device for extracting sediment in a tunnel drain pipe, which comprises a longitudinal drain blind pipe, wherein the longitudinal drain blind pipe is communicated with a central drain through a transverse drain pipe, and a three-way pipe joint is arranged at a joint between the longitudinal drain blind pipe and the transverse drain pipe; the negative pressure pipe is connected with a vacuum pump outside the tunnel through a vacuumizing pipeline, a flow velocity sensor is arranged on the longitudinal drainage blind pipe or the tee pipe joint, and the flow velocity sensor is close to the joint of the longitudinal drainage blind pipe and the tee pipe joint; the interface of the negative pressure pipe and the tee joint is provided with a program control valve c, and the vacuum pump, the flow velocity sensor and the program control valve c are electrically connected with a controller in a central control room outside the tunnel. Due to the structure, the utility model effectively discharges sediment in the drain pipe in time and reduces the probability of water leakage of the second lining.

Description

Device for extracting sediment in tunnel drain pipe

Technical Field

The utility model belongs to the technical field of tunnel drainage, and provides a device for effectively draining sediment in a drainage pipe, reducing the probability of leakage water of a secondary liner and reducing engineering cost investment.

Background

Along with the continuous development of domestic railway, highway and municipal works, tunnel engineering is an indispensable structure, and in order to guarantee tunnel drainage, current drainage device generally includes the vertical drainage blind pipe of pre-buried between the primary support layer of tunnel and secondary lining layer, communicates vertical drainage blind pipe and central ditch through horizontal drain pipe. However, ca in the water of cracks or faults in the tunnel area is often encountered during construction ²⁺ The content is very high, and after long-time precipitation, crystals or precipitates are easy to form in the drainage pipe of the tunnel, so that the drainage pipe of the tunnel is blocked vertically and horizontally, and a drainage system of the tunnel is disabled. Other diseases are formed on the surface of the secondary lining concrete, so that the secondary lining is leaked, a decorative layer of the secondary lining concrete is damaged, and the appearance is affected.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a device for draining sediment in a drain pipe and for draining sediment in a tunnel drain pipe, which can effectively drain sediment in the drain pipe and reduce the probability of leakage water from a secondary liner.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a device for extracting sediment in a tunnel drain pipe, which comprises a longitudinal drainage blind pipe pre-buried between an primary support layer and a secondary lining layer of the tunnel, communicating the longitudinal drain blind pipe with the central gutter through the transverse drain pipe, wherein: a three-way pipe joint is arranged at the joint between the longitudinal drainage blind pipe and the transverse drainage pipe, three joints of the three-way pipe joint are respectively communicated with a negative pressure pipe, the longitudinal drainage blind pipe and the transverse drainage pipe, the negative pressure pipe is communicated with a fire-fighting water pipe arranged in a cable pit, and the fire-fighting water pipe is communicated with a high-pressure water source outside a tunnel; the negative pressure pipe is connected with a vacuum pump outside the tunnel through a vacuumizing pipeline, a flow velocity sensor is arranged on the longitudinal drainage blind pipe or the tee pipe joint, and the flow velocity sensor is close to the joint of the longitudinal drainage blind pipe and the tee pipe joint; the interface of the negative pressure pipe and the tee joint is provided with a program control valve c, and the vacuum pump, the flow velocity sensor and the program control valve c are electrically connected with a controller in a central control room outside the tunnel.

The beneficial effects of the utility model are as follows:

1. after the crystallization and precipitation phenomenon occurs in the tunnel area due to the water quality problem, the problem of blocking of the longitudinal drainage blind pipe is directly solved by the scheme, and sediment is timely extracted from the longitudinal drainage blind pipe, so that the effect of a tunnel drainage system is guaranteed.

2. Sediment in the vertical drainage blind pipe is timely sucked out, so that the probability of water leakage of the secondary lining is indirectly reduced, and the appearance quality of the secondary lining concrete is ensured.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model in front view;

FIG. 3 is a schematic top view of the negative pressure pipe of the present utility model;

FIG. 4 is a schematic view of the specific layout of the pipes at the negative pressure pipe according to the present utility model;

fig. 5 is a control block diagram of the present utility model.

Reference numerals: 1. an initial support layer; 2. a secondary lining layer; 3. a longitudinal drainage blind pipe; 4. a cable trench; 5. a fire hose; 6. a transverse drain pipe; 7. a central gutter; 8. a three-way pipe joint; 9. a negative pressure pipe; 10. a high pressure water source; 11. a vacuum pump; 12. a flow rate sensor; 13. a sedimentation tank; 14. a water pipe; 15. a water pump; 21. a vacuum pumping pipeline; 22. a bypass pipe; 23. a program control valve a; 24. a program control valve b; 25. and a program control valve c.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

As shown in fig. 1 to 5, the device for extracting sediment in a tunnel drain pipe of the present utility model comprises a longitudinal drain blind pipe 3 pre-buried between an primary support layer 1 and a secondary lining layer 2 of the tunnel, wherein the longitudinal drain blind pipe 3 is communicated with a central drain channel 7 through a transverse drain pipe 6, and the device comprises: a three-way pipe joint 8 is arranged at the joint between the longitudinal drainage blind pipe 3 and the transverse drainage pipe 6, three joints of the three-way pipe joint 8 are respectively communicated with a negative pressure pipe 9, the longitudinal drainage blind pipe 3 and the transverse drainage pipe 6, the negative pressure pipe 9 is communicated with a fire-fighting water pipe 5 arranged in the cable pit 4, and the fire-fighting water pipe 5 is communicated with a high-pressure water source 10 outside the tunnel; the negative pressure pipe 9 is connected with a vacuum pump 11 outside the tunnel through a vacuumizing pipeline 21, a flow rate sensor 12 is arranged on the longitudinal drainage blind pipe 3 or the three-way pipe joint 8, and the flow rate sensor 12 is close to the joint of the longitudinal drainage blind pipe 3 and the three-way pipe joint 8; the interface of the negative pressure pipe 9 and the tee joint 8 is provided with a program control valve c25, and the vacuum pump 11, the flow rate sensor 12 and the program control valve c25 are electrically connected with a controller in a central control room outside the tunnel. In this embodiment, in the tunnel running direction, a negative pressure pipe 9 is arranged at intervals of 100m to 200m to form a negative pressure zone, the diameter of the negative pressure pipe 9 is larger than that of the fire-fighting water pipe 5, for example, the diameter of the fire-fighting water pipe 5 is 200mm, the diameter of the negative pressure pipe 9 is 300mm, and the length is about 500mm. In the prior art, the distance between two adjacent transverse drain pipes 6 is generally every 100m.

In order to reduce the engineering investment cost, a vacuum pump 11 is shared, and in the above embodiment, it is preferable that: the negative pressure pipe 9 is communicated with the vacuumizing pipeline 21 through a bypass pipe 22, a program control valve a23 is arranged on the bypass pipe 22, and the program control valve a23 is electrically connected with a controller in a central control room outside the tunnel.

In order to facilitate flushing with high pressure water, the service life of the whole device is effectively ensured, and in the above embodiment, it is preferable that: a program control valve b24 is arranged between the negative pressure pipe 9 and the fire-fighting water pipe 5, and the program control valve b24 is electrically connected with a controller in a central control room outside the tunnel. In this embodiment, the negative pressure pipe 9 is connected to the fire hose 5 via a further bypass pipe, on which the programmable valve b24 is arranged.

In order to save water, in the above embodiment, it is preferable that: the vacuumizing pipeline 21 is communicated with the sedimentation tank 13 outside the tunnel. The water collected in the sedimentation tank 13 can be used as it is after sedimentation.

In order to precipitate the water collected in the sedimentation tank 13 for fire fighting water, in the above embodiment, it is preferable that: the sedimentation tank 13 is communicated with the high-pressure water source 10 through a water pipe 14.

In order to facilitate the water collected in the sedimentation tank 13 to be delivered to the high-pressure water source 10 after sedimentation, in the above embodiment, it is preferable that: the water delivery pipeline 14 is provided with a water pump 15, and the water pump 15 is electrically connected with a controller in a central control room outside the tunnel.

The components used in all of the above embodiments are commercially available products. The description of the program control section is for the understanding of the present utility model by those skilled in the art, and is not intended to be the point of the present utility model.

Referring to fig. 1 to 5, the use process of the scheme is as follows: one or more flow rate sensors 12 detect that the water flow speed is slowed down from the longitudinal drainage blind pipe 3 and then send a signal to a controller in a central control room outside the tunnel, the controller in the central control room controls the vacuum pump 11 to start and open the program control valve a23, a negative pressure area is formed in a negative pressure pipe 9 close to the flow rate sensor 12 sending the signal, then the controller in the central control room controls the program control valve c25 to open, plugs in the longitudinal drainage pipe 3 are sucked out, then the controller in the central control room controls the program control valve b to open, then the water is discharged out of a sedimentation tank outside the tunnel through the fire water pipe 5, and the water can be reused as fire water after sedimentation and filtration for recycling; after the flow rate sensor 12 detects that the flow rate is at a set normal value, a controller in the central control room sequentially controls the program control valve b, the program control valve c25, the vacuum pump 11 and the program control valve a23 to be closed, so that normal drainage is realized.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims

1. The utility model provides a device of taking out precipitate in tunnel drain pipe, includes pre-buried vertical drainage blind pipe (3) between the primary support layer (1) and the secondary lining layer (2) in tunnel, communicates its characterized in that with vertical drainage blind pipe (3) and central ditch (7) through horizontal drain pipe (6): a three-way pipe joint (8) is arranged at the joint between the longitudinal drainage blind pipe (3) and the transverse drainage pipe (6), three joints of the three-way pipe joint (8) are respectively communicated with a negative pressure pipe (9), the longitudinal drainage blind pipe (3) and the transverse drainage pipe (6), the negative pressure pipe (9) is communicated with a fire-fighting water pipe (5) arranged in the cable pit (4), and the fire-fighting water pipe (5) is communicated with a high-pressure water source (10) outside the tunnel; the negative pressure pipe (9) is connected with a vacuum pump (11) outside the tunnel through a vacuumizing pipeline (21), a flow rate sensor (12) is arranged on the longitudinal drainage blind pipe (3) or the three-way pipe joint (8), and the flow rate sensor (12) is close to the joint of the longitudinal drainage blind pipe (3) and the three-way pipe joint (8); the vacuum pump is characterized in that a program control valve c (25) is arranged at the interface of the negative pressure pipe (9) and the tee joint (8), and the vacuum pump (11), the flow rate sensor (12) and the program control valve c (25) are electrically connected with a controller in a central control room outside the tunnel.

2. The apparatus for extracting sediment from a tunnel drain according to claim 1, wherein: the negative pressure pipe (9) is communicated with the vacuumizing pipeline (21) through a bypass pipe (22), a program control valve a (23) is arranged on the bypass pipe (22), and the program control valve a (23) is electrically connected with a controller in a central control room outside the tunnel.

3. A device for extracting sediment in a tunnel drain according to claim 1 or 2, wherein: a programmable valve b (24) is arranged between the negative pressure pipe (9) and the fire-fighting water pipe (5), and the programmable valve b (24) is electrically connected with a controller in a central control room outside the tunnel.

4. The apparatus for extracting sediment from a tunnel drain according to claim 1, wherein: the vacuumizing pipeline (21) is communicated with the sedimentation tank (13) outside the tunnel.

5. The apparatus for extracting sediment from a tunnel drain as defined in claim 4, wherein: the sedimentation tank (13) is communicated with the high-pressure water source (10) through a water conveying pipeline (14).

6. The apparatus for extracting sediment from a tunnel drain as defined in claim 5, wherein: the water delivery pipeline (14) is provided with a water pump (15), and the water pump (15) is electrically connected with a controller in a central control room outside the tunnel.