Tunnel plugging device

Abstract

The utility model discloses a tunnel leaking stoppage device which comprises a plugging plate, a grouting mechanism, a sealing ring, a drainage mechanism and a fixing frame, the fixing frame is fixed to an original connecting base in a tunnel segment, the fixing frame is provided with an abutting assembly capable of being movably adjusted, and the abutting assembly abuts against the outer side of the plugging plate. The sealing ring is tightly pressed between the plugging plate and the tunnel segment and surrounds the water leakage position of the tunnel segment, a sealed space is formed in the sealing ring, the plugging plate is provided with an injection hole and a water drainage opening, the injection hole and the water drainage opening are both communicated with the sealed space, the grouting mechanism is connected with the injection hole, and the water drainage mechanism is connected with the water drainage opening. The tunnel plugging device is simple in structure, the plugging difficulty is reduced, and the original structure of the tunnel segment is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel segment plugging, in particular to a tunnel plugging device. Background Art

[0002] When constructing tunnels using the shield method, when assembling tunnel segments, factors such as inappropriate point selection, squeezing of the tunnel segment waterproofing device by the thrust cylinder, irregular assembly process, and high groundwater pressure can cause groundwater to leak through the longitudinal seams, annular seams, and hoisting holes of the tunnel segments. The usual practice is to grout the seams on the tunnel segments or to seal them through secondary grouting through the grouting holes on the tunnel segments. This method can handle leakage points under conditions of low groundwater pressure and small water volume. This method is not applicable when the water head is high and the leakage is large. However, drilling and grouting at the leakage point of the tunnel segment poses the risk of destroying the structure of the formed tunnel segment and increasing tunnel leakage. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a tunnel plugging device which has a simple structure, reduces the difficulty of plugging and effectively protects the original structure of the tunnel segment.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A tunnel plugging device comprises a plugging plate, a grouting mechanism, a sealing ring, a drainage mechanism and a fixing frame, wherein the fixing frame is fixed on an original connecting seat in a tunnel segment, and a movable and adjustable clamping assembly is provided on the fixing frame, and the clamping assembly is pressed against the outer side of the plugging plate, and the sealing ring is pressed between the plugging plate and the tunnel segment and is arranged around the leakage of the tunnel segment, and a sealed space is formed inside the sealing ring, and an injection hole and a drainage port are provided on the plugging plate, and the injection hole and the drainage port are both connected to the sealed space, the grouting mechanism is connected to the injection hole, and the drainage mechanism is connected to the drainage port.

[0006] As a further improvement of the above technical solution:

[0007] The clamping assembly includes a plurality of clamping screws, which are threadedly connected to the fixing frame and clamped on the blocking plate.

[0008] The fixing frame includes at least two fixing rods arranged at intervals, the two ends of the fixing rods are respectively fixed on the original connecting seats in the tunnel segments, and each of the fixing rods is threadedly connected with a row of tightening screws arranged at intervals along the extending direction of the fixing rod.

[0009] The blocking plate is an arc-shaped plate.

[0010] The fixing rod is an arc-shaped rod.

[0011] Nuts are provided at positions of the fixing rod corresponding to each of the tightening screws, and the tightening screws are threadedly connected to the corresponding nuts.

[0012] Both ends of the fixing rod are provided with connecting ears, and the connecting ears are fixed to the original connecting seats in the tunnel segments by fixing bolts.

[0013] The grouting mechanism comprises a grouting pipe and a grouting valve. The grouting pipe is connected to the injection hole, and the grouting valve is arranged on the grouting pipe.

[0014] The drainage mechanism comprises a drainage pipe and a drainage valve. The drainage pipe is connected to a drainage port, and the drainage valve is arranged on the drainage pipe.

[0015] The blocking plate is a steel plate, and the sealing ring is a rubber ring.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] After the installation of the tunnel plugging device of the utility model is completed, the grouting mechanism is connected to the slurry supply equipment, and the drainage port is closed through the drainage mechanism. Then, the slurry supply equipment injects grout into the sealed space through the grouting mechanism to plug the water leakage on the tunnel segment. When the slurry solidifies to a certain strength, the drainage mechanism opens the drainage port to check the grouting effect. When no water flows out, the tunnel plugging device can be dismantled for convenient reuse. The tunnel plugging device has a simple structure, reduces the difficulty of plugging, and effectively protects the original structure of the tunnel segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a tunnel leakage plugging device.

[0019] Figure 2 The utility model is a schematic diagram of the side structure of the plugging plate of the tunnel leakage plugging device.

[0020] Figure 3 The utility model is a schematic diagram of the main structure of the plugging plate of the tunnel leakage plugging device.

[0021] The symbols in the figure represent:

[0022] 1. Sealing plate; 11. Injection hole; 12. Drainage outlet; 2. Grouting mechanism; 21. Grouting pipe; 22. Grouting valve; 3. Sealing ring; 4. Drainage mechanism; 41. Drainage pipe; 42. Drainage valve; 5. Fixing frame; 51. Fixing rod; 511. Nut; 512. Connecting ear; 513. Fixing bolt; 6. Tunnel segment; 7. Connecting seat; 8. Tightening assembly; 81. Tightening screw; 9. Sealing space. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] As shown in the disclosure of the present utility model, unless the context clearly indicates an exception, the words "one", "a kind of" and / or "the" do not specifically refer to the singular, but may also include the plural. The "first", "second" and similar words used in the disclosure of the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0025] Figures 1 to 3 An embodiment of the utility model tunnel plugging device is shown. The tunnel plugging device of this embodiment includes a plugging plate 1, a grouting mechanism 2, a sealing ring 3, a drainage mechanism 4 and a fixing frame 5. The fixing frame 5 is fixed on the original connecting seat 7 in the tunnel segment 6. The fixing frame 5 is provided with a movable and adjustable clamping component 8, which is pressed against the outer side of the plugging plate 1. The sealing ring 3 is pressed between the plugging plate 1 and the tunnel segment 6 and is arranged around the leaking part of the tunnel segment 6. A sealed space 9 is formed inside the sealing ring 3. An injection hole 11 and a drainage port 12 are opened on the plugging plate 1. The injection hole 11 and the drainage port 12 are both connected to the sealed space 9. The grouting mechanism 2 is connected to the injection hole 11, and the drainage mechanism 4 is connected to the drainage port 12.

[0026] After the installation of the tunnel plugging device is completed, the grouting mechanism 2 is connected to the slurry supply equipment, and the drain port 12 is closed through the drainage mechanism 4. Then, the slurry supply equipment injects grout into the sealed space 9 through the grouting mechanism 2 to plug the leaking part on the tunnel segment 6. When the slurry solidifies to a certain strength, the drainage mechanism 4 opens the drain port 12 to check the grouting effect. When no water flows out, the tunnel plugging device can be dismantled for easy reuse. The tunnel plugging device has a simple structure, reduces the difficulty of plugging, and effectively protects the original structure of the tunnel segment 6.

[0027] In this embodiment, Figure 1 and Figure 2 As shown, the tightening assembly 8 includes a plurality of tightening screws 81, which are threadedly connected to the fixing frame 5 and tightened on the blocking plate 1. By tightening the tightening screws 81, the outer side of the blocking plate 1 can be tightened, and conversely, by loosening the tightening screws 81, the tightening effect on the blocking plate 1 can be released, and then the blocking plate 1 can be disassembled. The structure is simple and the operation is convenient.

[0028] In this embodiment, the fixing frame 5 includes at least two fixed rods 51 arranged at intervals, and the two ends of the fixed rods 51 are respectively fixed to the original connection seats 7 in the tunnel segment 6, and each fixed rod 51 is threadedly connected with a row of tightening screws 81 arranged at intervals along the extending direction of the fixed rods 51. Specifically, the fixed rods 51 are arranged along the circumference of the tunnel segment 6, and through the combination of the fixed rods 51 and the tightening screws 81, tightening is performed at different locations on the outer side of the blocking plate 1, achieving a good tightening effect.

[0029] In this embodiment, the plugging plate 1 is an arc-shaped plate. The fixing rod 51 is an arc-shaped rod. Specifically, the outer diameter of the plugging plate 1 is smaller than the inner diameter of the tunnel segment 6, and the outer diameter of the fixing rod 51 is smaller than the outer diameter of the plugging plate 1.

[0030] In this embodiment, Figure 1 As shown, nuts 511 are provided at positions corresponding to the fixing rod 51 and the fastening screws 81, and the fastening screws 81 are threadedly connected with the corresponding nuts 511. The structure is simple and the processing is convenient.

[0031] In this embodiment, both ends of the fixing rod 51 are provided with connecting ears 512, and the connecting ears 512 are fixed to the original connecting seat 7 in the tunnel segment 6 by fixing bolts 513. The tunnel segment 6 is cylindrical as a whole, and is spliced ​​by a plurality of arc blocks in the circumferential direction and a plurality of cylindrical units in the axial direction. Each adjacent arc block is connected by the connecting seat 7, and adjacent cylindrical units are connected by the connecting seat 7. The connecting ears 512 of the fixing rod 51 and the fixing bolts 513 are fixed to the original connecting seat 7 in the tunnel segment 6 without breaking the original structure of the tunnel segment 6.

[0032] In this embodiment, Figure 2 As shown, the grouting mechanism 2 includes a grouting pipe 21 and a grouting valve 22, the grouting pipe 21 is connected to the injection hole 11, and the grouting valve 22 is arranged on the grouting pipe 21. During grouting, the grouting pipe 21 is connected to the grouting equipment, and the grouting valve 22 can be opened to inject grout into the sealed space 9, and closed to stop grouting.

[0033] In this embodiment, Figure 2 As shown, the drainage mechanism 4 includes a drainage pipe 41 and a drainage valve 42. The drainage pipe 41 is connected to the drainage port 12, and the drainage valve 42 is arranged on the drainage pipe 41. During grouting, the drainage valve 42 is closed. After the grouting is completed, the drainage valve 42 is opened to detect water leakage. The drainage pipe 41 can be connected to the drainage equipment to drain the water to a designated location.

[0034] In this embodiment, the blocking plate 1 is a steel plate, and the sealing ring 3 is a rubber ring.

[0035] In order to prevent the sealing ring 3 from being squeezed and falling off during the grouting and plugging process, a limit strip can be welded on the sealing plate 1 outside the sealing ring 3 to ensure the sealing effect under high-pressure grouting conditions. Of course, the sealing ring 3 can also be clamped on the sealing plate 1 or fixed on the sealing plate 1.

[0036] Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A tunnel plugging device, characterized in that: The invention comprises a plugging plate (1), a grouting mechanism (2), a sealing ring (3), a drainage mechanism (4) and a fixing frame (5), wherein the fixing frame (5) is fixed on an original connection seat (7) in a tunnel segment (6), the fixing frame (5) is provided with a movable and adjustable pressing component (8), the pressing component (8) is pressed against the outer side of the plugging plate (1), the sealing ring (3) is pressed between the plugging plate (1) and the tunnel segment (6) and is arranged around the leaking part of the tunnel segment (6), a sealed space (9) is formed inside the sealing ring (3), an injection hole (11) and a drainage port (12) are provided on the plugging plate (1), the injection hole (11) and the drainage port (12) are both connected to the sealed space (9), the grouting mechanism (2) is connected to the injection hole (11), and the drainage mechanism (4) is connected to the drainage port (12).

2. The tunnel plugging device according to claim 1, characterized in that: The tightening assembly (8) comprises a plurality of tightening screws (81), wherein the tightening screws (81) are threadedly connected to the fixing frame (5) and are tightened on the sealing plate (1).

3. The tunnel plugging device according to claim 2, characterized in that: The fixing frame (5) comprises at least two fixing rods (51) arranged at intervals, the two ends of the fixing rods (51) are respectively fixed to existing connection seats (7) in the tunnel segment (6), and each fixing rod (51) is threadedly connected to a row of tightening screws (81) arranged at intervals along the extending direction of the fixing rod (51).

4. The tunnel plugging device according to claim 3 is characterized in that: The blocking plate (1) is an arc-shaped plate.

5. The tunnel plugging device according to claim 4 is characterized in that: The fixing rod (51) is an arc-shaped rod.

6. The tunnel plugging device according to claim 3, characterized in that: Nuts (511) are provided at positions corresponding to the fixing rods (51) and the respective tightening screws (81), and the tightening screws (81) are threadedly connected to the corresponding nuts (511).

7. The tunnel plugging device according to claim 3, characterized in that: Both ends of the fixing rod (51) are provided with connecting ears (512), and the connecting ears (512) are fixed to the original connecting seat (7) in the tunnel segment (6) through fixing bolts (513).

8. The tunnel plugging device according to any one of claims 1 to 7, characterized in that: The grouting mechanism (2) comprises a grouting pipe (21) and a grouting valve (22); the grouting pipe (21) is connected to the injection hole (11); and the grouting valve (22) is arranged on the grouting pipe (21).

9. The tunnel plugging device according to any one of claims 1 to 7, characterized in that: The drainage mechanism (4) comprises a drainage pipe (41) and a drainage valve (42); the drainage pipe (41) is connected to the drainage port (12); and the drainage valve (42) is arranged on the drainage pipe (41).

10. The tunnel plugging device according to any one of claims 1 to 7, characterized in that: The blocking plate (1) is a steel plate, and the sealing ring (3) is a rubber ring.

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