Leakage-proof grouting pipe behind tunnel segment wall

Abstract

The utility model provides a leakage-proof grouting pipe behind a tunnel segment wall. The leakage-proof grouting pipe effectively solves the problem that in the prior art, backflow and leakage occur at the moment when a grouting pipe is separated from a grouting machine. According to the technical scheme, the grouting pipe comprises a grouting pipe body, an inserting pipe coaxial with the grouting pipe body is arranged on the right side of the grouting pipe body, a communicating pipe with the right end open is fixed to the left end of the inserting pipe, and the left end of the communicating pipe is inserted into a cavity of the grouting pipe body; a sealing sleeve sleeves the outer side of the left end of the communicating pipe, the outer edge of the sealing sleeve is fixed in the main body cavity, and the communicating pipe can slide left and right along the sealing sleeve; an annular protrusion is arranged at the left end of the sealing pipe and enables the sealing sleeve not to be separated from the connecting pipe. A pressure spring is sleeved on the connecting cylinder; a plurality of overflowing holes are formed in the side wall of the left end of the sealing pipe; the grouting pipe is ingenious in structure, the end of the grouting pipe can be blocked instantly when the grouting pipe is separated from a grouting machine, grout can be prevented from flowing back, the use efficiency of the grout can be improved, and meanwhile the construction quality can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction or maintenance technical field, especially a kind of tunnel segment wall behind leakproof grouting pipe. BACKGROUND

[0002] In tunnel later maintenance, for the side wall water leakage treatment is mainly drilling grouting, generally, after drilling, grouting pipe or grouting needle is used to pour urea or acrylic acid salt and the like waterproof leakage-preventing mode inwardly.In prior art, grouting pipe needs to be plugged with screw cap or plug after grouting, and in specific operation, since the tunnel segment has certain pressure, when grouting machine is disconnected from grouting pipe, part of grout will flow back from grouting pipe, causing the problem that the end of grouting pipe is inconvenient to plug during operation, and the leaked grout is easy to stick to other places, causing the site to be in disarray after grouting.The existing patent CN215565990U discloses detachable shaped tunnel grouting pipe, but its main purpose is to solve the problem that grouting pipe cannot be reused, but the problem of backflow leakage of grouting pipe at the moment of disconnection from grouting machine still cannot be solved.

[0003] The present application provides a kind of tunnel segment wall behind leakproof grouting pipe, the end of grouting pipe can be blocked at the moment of disconnection from grouting machine, can prevent grout backflow, is conducive to improving the use efficiency of grout, and also helps to improve construction quality. UTILITY MODEL CONTENT

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a kind of tunnel segment wall behind leakproof grouting pipe, effectively solve the problem that grouting pipe in prior art will appear backflow leakage at the moment of disconnection from grouting machine.

[0005] The technical solution solved is that the main body includes grouting pipe, the right side of the main body has coaxial plug-in pipe, the left end of the plug-in pipe is fixed with the right end opening communication pipe, the left end of the communication pipe is inserted into the main body cavity;The outer side of the left end of the communication pipe is sleeved with sealing sleeve, the outer edge of the sealing sleeve is fixed in the main body cavity, and the communication pipe can slide left and right along the sealing sleeve;The left end of the sealing pipe is provided with annular protrusion, and the annular protrusion makes the sealing sleeve and the connecting pipe not separate;Compression spring is sleeved on the connecting cylinder;A plurality of flow holes are formed in the side wall of the left end of the sealing pipe;In initial state, the sealing pipe blocks the flow hole, so that the plug-in pipe and the main body are not connected, when the plug-in pipe moves left, the sealing sleeve no longer plays a sealing role, and the plug-in pipe is communicated with the main body cavity.

[0006] Preferably, the right end of the main body and the left end of the plug-in pipe are both provided with L-shaped buckling hooks, and the buckling hooks on the main body and the plug-in pipe can hook and not separate.

[0007] Preferably, the cross section of the sealing sleeve is U-shaped with the opening facing left.

[0008] Preferably, the U-shaped cavity of the sealing sleeve is provided with a plurality of rib plates.

[0009] The utility model discloses a clever structure can realize the end of grouting pipe can be in the moment of separating from grouting machine and block, can prevent the slurry reflux, is favorable for improving the use efficiency of slurry, also help to improve construction quality. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the front view of the utility model.

[0011] Figure 2 It is the three-dimensional drawing of the utility model.

[0012] Figure 3 It is the three-dimensional explosion view of the utility model.

[0013] Figure 4 It is the front view of the utility model in the grouting process.

[0014] Figure 5 It is the three-dimensional drawing of the utility model in the grouting process.

[0015] Figure 6 It is the structure diagram of the sealing sleeve of the utility model. DETAILED DESCRIPTION

[0016] The specific embodiment of the utility model is further explained in detail in combination with the drawings.

[0017] By Figures 1 to 6 The utility model discloses a grouting pipe sealing device, which comprises a main body 1, a plug-in pipe 2 coaxial with the main body 1, a communication pipe 3 with an open right end fixed to the left end of the plug-in pipe 2, the left end of the communication pipe 3 inserted into the cavity of the main body 1, a sealing sleeve 4 sleeved on the outer side of the left end of the communication pipe 3, the outer edge of the sealing sleeve 4 fixed in the cavity of the main body 1, the communication pipe 3 can slide left and right along the sealing sleeve 4, an annular protrusion provided on the left end of the sealing pipe, the annular protrusion makes the sealing sleeve 4 not separated from the connecting pipe, a compression spring 5 sleeved on the connecting cylinder, a plurality of flow holes 6 provided on the side wall of the left end of the sealing pipe, in the initial state, the sealing pipe blocks the flow holes 6 so that the plug-in pipe 2 is not communicated with the main body 1, when the plug-in pipe 2 moves to the left, the sealing sleeve 4 no longer plays a sealing role, and the plug-in pipe 2 is communicated with the cavity of the main body 1.

[0018] Since the grouting time is generally relatively long, ranging from several minutes to tens of minutes, mainly depending on the size of the crack leakage, in order to keep the main body 1 and the plug-in pipe 2 together for a long time during the grouting process, L-shaped buckling hooks 7 are arranged on the right end of the main body 1 and the left end of the plug-in pipe 2, and the buckling hooks 7 on the main body 1 and the plug-in pipe 2 can hook and not separate.

[0019] In order to maximize the sealing effect of the sealing sleeve 4, the cross-section of the sealing sleeve 4 is U-shaped with the opening facing to the left.

[0020] In order to ensure that the sealing sleeve 4 fits tightly against the surface of the connecting pipe 3 during the sealing process, multiple ribs are provided inside the U-shaped cavity of the sealing sleeve 4.

[0021] It is worth noting that in this scheme, the sealing sleeve 4 is made of hard rubber, which gives it sufficient resistance to deformation; at the same time, the U-shaped cavity design allows it to fit more tightly against the outer surface of the connecting pipe 3 when facing the pressure inside the grouting pipe body 1.

[0022] Of course, there are many ways to keep the connector 2 in contact with the main body 1. For example, the right end of the main body 1 and the left end of the connector 2 can be made of strong magnets. When the two are in contact, the elastic force of the compression spring 5 is insufficient to separate them. There are many other methods, which will not be elaborated here.

[0023] When using, such as Figure 1 As shown, the left end of the grouting pipe is inserted into the rear side of the tunnel segment wall. At this time, the insertion pipe 2 is separated from the main body 1, and the sealing sleeve 4 seals the multiple flow holes 6, meaning that the cavity of the main body 1 is not connected to the insertion pipe 2. Then, the discharge pipe of the grouting pump is connected to the insertion pipe 2 in this scheme, and the insertion pipe 2 is pressed to the left as shown. Figure 2 As shown in the diagram, the insertion pipe 2 is then rotated by a certain angle so that the fastening hook 7 on the right end of the main body 1 engages with the fastening hook 7 on the left end of the insertion pipe 2. At the same time, as the flow hole 6 moves to the left along with the connecting pipe 3 to the left side of the sealing sleeve 4, the insertion pipe 2 is connected to the cavity of the main body 1 through the connecting pipe 3. The grouting machine is then started to inject grout into the grouting pipe. After the grouting is completed, the insertion pipe 2 is rotated in the opposite direction. The elastic force of the compression spring 5 causes the insertion pipe 2 to move to the right and return to its original position. At the same time, the flow hole 6 is blocked by the sealing sleeve 4 again. At this time, the discharge pipe of the grouting machine can be separated from the insertion pipe 2.

[0024] During the above process, the grout from the grouting machine did not leak at all. After the grouting was completed, the sealing sleeve 4 could quickly seal the multiple flow holes 6, thus achieving the sealing of the entire grouting pipe. The operation was simple, convenient and quick.

[0025] This invention has a clever structure that allows the end of the grouting pipe to be sealed instantly upon separation from the grouting machine, preventing grout backflow, improving grout utilization efficiency, and also contributing to improved construction quality.

Claims

1. A tunnel segment wall back leakproof slip casting pipe, characterized in that, The main body (1) comprises a grouting pipe, the right side of the main body (1) is coaxial with a plug-in pipe (2), the left end of the plug-in pipe (2) is fixed with a right-end-opened communication pipe (3), the left end of the communication pipe (3) is inserted into the cavity of the main body (1); the left end of the communication pipe (3) is sleeved with a sealing sleeve (4), the outer edge of the sealing sleeve (4) is fixed in the cavity of the main body (1), the communication pipe (3) can slide left and right along the sealing sleeve (4); the left end of the sealing pipe is provided with an annular protrusion, the annular protrusion makes the sealing sleeve (4) not separate from the connecting pipe; the connecting cylinder is sleeved with a compression spring (5); a plurality of flow holes (6) are formed in the side wall of the left end of the sealing pipe; in the initial state, the sealing pipe blocks the flow holes (6) so that the plug-in pipe (2) is not communicated with the main body (1), when the plug-in pipe (2) moves left, at this time, the sealing sleeve (4) no longer plays a sealing role, and the plug-in pipe (2) is communicated with the cavity of the main body (1).

2. A tunnel segment wall back leakage preventing grouting pipe according to claim 1, characterized in that, The right end of the main body (1) and the left end of the plug-in pipe (2) are both provided with L-shaped buckling hooks (7), the buckling hooks (7) on the main body (1) and the plug-in pipe (2) can be hooked and not separated.

3. A tunnel segment wall back leakage preventing grouting pipe according to claim 1 or 2, characterized in that, The cross section of the sealing sleeve (4) is U-shaped with the opening facing left.

4. A tunnel segment wall post-leak plugging pipe according to claim 3, characterized in that, A plurality of rib plates are arranged in the U-shaped cavity of the sealing sleeve (4).

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