Grouting guide pipe for tunnel secondary lining repair

Abstract

The utility model discloses a grouting guide pipe for repairing a secondary lining of a tunnel, which is used for repairing the secondary lining of the tunnel, belongs to the technical field of grouting guide pipes, and solves the problems that in the prior art, the setting time of quick-setting concrete cannot be accurately controlled, the quick-setting concrete is easy to cause non-uniform coating, the fixing effect and the anti-leakage effect of the grouting guide pipe are still influenced, and the construction cost is low. And the grouting repair construction efficiency is easily reduced due to too slow solidification. The guide pipe comprises a guide pipe body used for grouting, and a fixing structure movably matched with the guide pipe body and used for fixing the guide pipe body to a drill hole. The fixing structure comprises a sleeve with internal threads, a water swelling rubber sleeve A arranged outside the sleeve in a sleeving mode, a plurality of arc-shaped elastic pieces which are arranged at one end of the sleeve and protrude outwards, and a hollow pipe which is matched with the threads of the sleeve, matched with the catheter body and provided with external threads. And a pressing block for extruding the arc-shaped elastic sheet to be matched with the drill hole is arranged on the hollow pipe. The device is used for repairing the tunnel secondary lining.

Description

Technical Field

[0001] A grouting conduit for tunnel secondary lining repair, belonging to the field of grouting conduit technology. Background Technology

[0002] When bulges or cracks appear in the secondary lining, grout is injected through drilling and a grouting pipe inserted into the borehole to repair and reinforce the tunnel secondary lining structure. However, in practice, there are often problems such as large gaps between the grouting pipe and the borehole wall, which may cause grout to leak from the gaps, leading to a drop in grouting pressure and affecting the repair effect; or even a mismatch between the borehole diameter and the outer diameter of the grouting pipe, which may prevent the grouting pipe from being firmly fixed in the borehole and require manual support.

[0003] To solve the above-mentioned technical problems, the existing technology involves inserting a grouting pipe into the borehole and then fixing it with quick-setting concrete for sealing. However, the following technical problems still exist:

[0004] The setting time of quick-setting concrete cannot be precisely controlled. If it sets too quickly, it will cause uneven application, and the fixing effect and anti-leakage effect of the grouting pipe will still be affected. If it sets too slowly, it will reduce the efficiency of grouting repair construction. Utility Model Content

[0005] The purpose of this utility model is to provide a grouting conduit for tunnel secondary lining repair, which solves the problems in the prior art where the setting time of quick-setting concrete cannot be precisely controlled, excessively rapid setting can easily lead to uneven application, and the fixing effect and anti-leakage effect of the grouting conduit are still affected, while excessively slow setting can easily reduce the efficiency of grouting repair construction.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A grouting conduit for tunnel secondary lining repair includes a conduit body for grouting and a fixing structure that movably cooperates with the conduit body and fixes the conduit body to the borehole.

[0008] The fixing structure includes a sleeve with internal threads, a water-swellable rubber sleeve A fitted over the sleeve, multiple outwardly protruding arc-shaped elastic plates on one end of the sleeve, and a hollow tube with external threads that mates with the sleeve threads and the guide tube body. The hollow tube is equipped with a pressing block that compresses the arc-shaped elastic plates and mates with the drilled hole; or

[0009] The fixed structure comprises a sleeve with internal thread, a water-swelling rubber sleeve A outside the sleeve, a plurality of outward convex arc-shaped elastic sheets arranged on one end of the sleeve, a hollow pipe with external thread matched with the thread of the sleeve and matched with the pipe body, a nut arranged on the hollow pipe and matched with the arc-shaped elastic sheet and the thread of the drill hole, and a limiting head arranged on the hollow pipe and matched with the hollow pipe to prevent the hollow pipe from rotating out of the sleeve.

[0010] Further, a sealing rubber pad in the shape of a horn is arranged on the sleeve at one end of the arc-shaped elastic sheet, and the arc-shaped elastic sheet is arranged in the sealing rubber pad.

[0011] Further, an annular groove is arranged on the outer wall of the sleeve along the length direction of the sleeve, and the water-swelling rubber sleeve A is arranged on the annular groove.

[0012] Further, a groove A is arranged on the inner wall of the sleeve, and a sealing pad A for sealing the sleeve and the hollow pipe or a water-swelling rubber sleeve B is arranged on the groove A; or / and

[0013] A groove B is arranged on the outer wall of the hollow pipe, and a sealing pad B for sealing the sleeve and the hollow pipe or a water-swelling rubber sleeve is arranged on the groove B.

[0014] Further, the pressing block is an annular block fixedly arranged on the hollow pipe; or the pressing block is a nut matched with the thread of the hollow pipe.

[0015] Further, the pipe body is matched with the hollow pipe arranged on the outside of the drill hole to perform grouting; or

[0016] The pipe body is arranged in the drill hole through the hollow pipe to perform grouting.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] I. This utility model involves fitting a sleeve on a fixed structure with a hollow tube threaded together, causing the arc-shaped elastic sheet to be compressed by a pressing block or nut, and then inserted into the drill hole. The arc-shaped elastic sheet is initially or completely fixed within the drill hole by the pressure of the drill hole's arc-shaped surface. With the sleeve initially fixed in the drill hole, the hollow tube rotates further into the drill hole. The pressing block can then press the arc-shaped elastic sheet, causing it to be compressed and tightly abut against the inner wall of the drill hole, or the nut can be screwed onto the hollow tube with a limiting head. The curved elastic sheet is pressed and squeezed to make it fit tightly against the inner wall of the borehole. The method of fixing the curved elastic sheet to the borehole by pushing it inward can be used for a wide range of borehole diameters. It can effectively avoid the problem of fixing the borehole due to its large diameter. In addition, the water-swellable rubber sleeve A, which is sleeved on the outside of the casing, expands when it comes into contact with seepage water or grouting liquid to seal the gap between the casing and the inner wall of the borehole. This avoids the problem of poor fixing effect and reduced construction efficiency caused by the inability to accurately control the setting time of quick-setting concrete.

[0019] II. The present invention provides a funnel-shaped sealing rubber gasket on the sleeve, the purpose of which is to facilitate the sealing rubber gasket to be squeezed and matched with the borehole wall by the arc-shaped elastic sheet, thereby achieving the function of sealing the borehole and the sleeve in one step.

[0020] 3. This utility model has an annular groove on the outer wall of the sleeve, which facilitates the replacement of the water-swellable rubber sleeve A when damaged or according to different thickness requirements;

[0021] IV. The present invention provides a groove A on the sleeve and a sealing gasket A or a water-swellable rubber sleeve B on the groove A, or / and provides a groove B on the hollow tube and a sealing gasket B or a water-swellable rubber sleeve on the groove B, in order to seal the sleeve and the hollow tube and prevent leakage.

[0022] V. The pressing block in this utility model is either a ring block fixedly set on the hollow tube or a nut movably set on the hollow tube, so as to facilitate selection and application on the hollow tube rotating into the borehole according to the requirements. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the fixing structure when both ends of the hollow tube protrude through the sleeve in this utility model;

[0025] Figure 2 for Figure 1 The image shows a burst of flames;

[0026] Figure 3 for Figure 1 A cross-sectional view of the water-swellable rubber sleeve A and the sealing rubber gasket on the middle sleeve.

[0027] Figure 4 This is a schematic diagram of the fixing structure inside the hollow tube and the sleeve located inside the borehole in this utility model.

[0028] Figure 5 This is a schematic diagram of the structure in Figure 4 where the hollow tube and sealing gasket B are fitted together;

[0029] Figure 6 This is a schematic diagram of the structure of the hollow tube of this utility model, in which a limiting head is provided to cooperate with the sleeve;

[0030] Figure 7 for Figure 6 Schematic diagram of the hollow tube structure;

[0031] In the diagram: 1-fixed structure, 2-sleeve, 3-water-swellable rubber sleeve A, 4-arc elastic sheet, 5-hollow tube, 6-pressing block, 7-sealing rubber gasket, 8-annular groove, 9-groove A, 10-sealing gasket A, 11-groove B, 12-sealing gasket B, 13-limiting head, 14-nut. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of the utility model, it needs to be explained that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, it is only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0035] In addition, if the terms "first", "second", "third" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, if the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] In the description of the utility model, it also needs to be explained that, unless otherwise specified and limited, if the terms "set", "install", "connect", "connect" and the like are broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0039] Embodiment 1

[0040] In order to solve the problem that the setting time of the rapid-setting concrete in the prior art cannot be accurately controlled, too fast setting is easy to cause uneven coating, and the fixing effect and anti-leakage effect of the grouting pipe are still affected, and too slow setting is easy to reduce the grouting repair construction efficiency. Figures 1-7 As shown in the figure, a grouting pipe for tunnel secondary lining repair is provided, which comprises a pipe body for grouting, a fixing structure 1 movably matched with the pipe body and fixing the pipe body on the drill hole;

[0041] The fixed structure 1 comprises a sleeve 2 with internal thread, a water-swelling rubber sleeve A 3 sleeved outside the sleeve 2, a plurality of outwardly convex arc-shaped elastic pieces 4 arranged on one end of the sleeve 2, and a hollow pipe 5 with external thread matched with the sleeve 2 and matched with the pipe body, the hollow pipe 5 is provided with a pressing block 6 for pressing the arc-shaped elastic pieces 4 matched with the drill hole. In practice, the hollow pipe is inserted into the sleeve from one end of the arc-shaped elastic pieces, and is matched with the sleeve thread, after the matching, the arc-shaped elastic pieces are in the state of being pressed and compressed by the pressing block and can be extruded by the drill hole after being inserted into the drill hole, and are preliminarily fixed or completely fixed in the drill hole by the arc-shaped surface of the arc-shaped elastic pieces being extruded by the drill hole, in the case that the sleeve is preliminarily fixed in the drill hole, the pressing block is advanced to the side of the drill hole again, when the pressing block 6 is a ring block fixedly arranged on the hollow pipe 5, the hollow pipe 5 is controlled to rotate to the side of the drill hole, or when the pressing block 6 is a nut matched with the hollow pipe 5 by thread, the nut is operated to rotate on the hollow pipe and move to the side of the drill hole, so that the arc-shaped elastic pieces are pressed by the pressing block and are extruded and tightly abut against the inner wall of the drill hole by force, that is, the fixing of the fixed structure is realized, and then the pipe body is matched (threaded) with the hollow pipe 5 arranged at one end outside the drill hole for grouting, or the pipe body passes through the hollow pipe 5 to be arranged in the drill hole for grouting.

[0042] The fixed structure 1 comprises a sleeve 2 with internal thread, a water-swelling rubber sleeve A 3 sleeved outside the sleeve 2, a plurality of outwardly convex arc-shaped elastic pieces 4 arranged on one end of the sleeve 2, and a hollow pipe 5 with external thread matched with the sleeve 2 and matched with the pipe body, the hollow pipe 5 is provided with a pressing block 6 for pressing the arc-shaped elastic pieces 4 matched with the drill hole. In practice, the hollow pipe is inserted into the sleeve from one end of the arc-shaped elastic pieces, and is matched with the sleeve thread, after the matching, the arc-shaped elastic pieces are in the state of being pressed and compressed by the pressing block and can be extruded by the drill hole after being inserted into the drill hole, and are preliminarily fixed or completely fixed in the drill hole by the arc-shaped surface of the arc-shaped elastic pieces being extruded by the drill hole, in the case that the sleeve is preliminarily fixed in the drill hole, the pressing block is advanced to the side of the drill hole again, when the pressing block 6 is a ring block fixedly arranged on the hollow pipe 5, the hollow pipe 5 is controlled to rotate to the side of the drill hole, or when the pressing block 6 is a nut matched with the hollow pipe 5 by thread, the nut is operated to rotate on the hollow pipe and move to the side of the drill hole, so that the arc-shaped elastic pieces are pressed by the pressing block and are extruded and tightly abut against the inner wall of the drill hole by force, that is, the fixing of the fixed structure is realized, and then the pipe body is matched (threaded) with the hollow pipe 5 arranged at one end outside the drill hole for grouting, or the pipe body passes through the hollow pipe 5 to be arranged in the drill hole for grouting.

[0043] The two above-mentioned embodiments can also be fixed in the borehole according to other installation sequences as required.

[0044] In summary, the inward pushing arc-shaped elastic sheet is fixed in the borehole, which can be applied to a wide range of borehole diameters, effectively avoids the problem that the borehole diameter is too large to be fixed, and can also expand the water-swelling rubber sleeve A outside the casing to seal the gap between the casing and the inner wall of the borehole when encountering water infiltration or grouting liquid, thereby avoiding the problem that the setting time of the rapid-setting concrete cannot be accurately controlled, resulting in poor fixing effect and affecting the construction efficiency of the anti-seepage effect.

[0045] The length and position of the internal thread on the casing 2 and the external thread on the hollow pipe 5 are selected according to actual requirements, and the thickness and number of the arc-shaped elastic sheets are also selected according to actual requirements.

[0046] Example 2

[0047] On the basis of Example 1, a sealing rubber pad 7 in the shape of a horn is arranged on one end of the arc-shaped elastic sheet 4 and the casing 2, and the arc-shaped elastic sheet 4 is located inside the sealing rubber pad 7. The sealing rubber pad in the shape of a horn is arranged on the casing, which is convenient for the arc-shaped elastic sheet to press and seal the sealing rubber pad and the borehole wall, thereby playing a role in sealing the borehole and the sleeve in one step. The sealing rubber pad 7 is arranged in the shape of a horn, which is not only convenient for cooperation with the arc-shaped elastic sheet 4, but also convenient for being pressed and filled into the gap by the arc-shaped elastic sheet 4. Of course, in practice, the sealing rubber pad 7 can also be arranged in other shapes.

[0048] Example 3

[0049] On the basis of Example 2, an annular groove 8 is arranged on the outer wall of the casing 2 along the length direction of the casing 2, and the water-swelling rubber sleeve A3 is arranged on the annular groove 8. The annular groove is arranged on the outer wall of the casing, which is convenient for replacing the water-swelling rubber sleeve A according to the damage or different thickness requirements. Of course, in practice, the water-swelling rubber sleeve A3 can also be directly fixed on the casing.

[0050] Example 4

[0051] On the basis of Example 3, a recess A9 is arranged on the inner wall of the casing 2, and a sealing pad A10 or a water-swelling rubber sleeve B for sealing the casing 2 and the hollow pipe 5 is arranged on the recess A9; or / and

[0052] A recess B11 is arranged on the outer wall of the hollow pipe 5, and a sealing pad B12 or a water-swelling rubber sleeve C for sealing the casing 2 and the hollow pipe 5 is arranged on the recess B11.

[0053] In practice, the recess A9 and the recess B11 can be arranged at the end or middle of the sleeve and the hollow tube respectively, as long as the matching requirement of the sleeve and the hollow tube and the purpose of sealing the sleeve and the hollow tube can be met. The annular groove arranged on the outer wall of the sleeve facilitates the replacement of the water-swelling rubber sleeve A which is damaged or according to different thickness requirements.

Claims

1. A grouting conduit for tunnel secondary lining repair, comprising a conduit body for grouting, characterized in that, Includes a fixing structure (1) that moves in conjunction with the catheter body and fixes the catheter body to the borehole; The fixing structure (1) includes a sleeve (2) with internal threads, a water-swellable rubber sleeve A (3) fitted outside the sleeve (2), multiple outwardly protruding arc-shaped elastic plates (4) on one end of the sleeve (2), and a hollow tube (5) with external threads that mates with the threads of the sleeve (2) and the conduit body. A pressing block (6) is provided on the hollow tube (5) to compress the arc-shaped elastic plates (4) and mate with the drilled hole; or The fixing structure (1) includes a sleeve (2) with internal threads, a water-swellable rubber sleeve A (3) sleeved outside the sleeve (2), multiple outwardly protruding arc-shaped elastic pieces (4) set on one end of the sleeve (2), and a hollow tube (5) with external threads that mates with the threads of the sleeve (2) and the conduit body. A nut (14) that compresses the arc-shaped elastic pieces (4) and mates with the drilling threads is provided on the hollow tube (5) and is located on one side inside the drilling hole. A limiting head (13) that prevents the hollow tube (5) from rotating out of the sleeve is provided on the hollow tube (5).

2. The grouting conduit for tunnel secondary lining repair according to claim 1, characterized in that: Located at one end of the arc-shaped elastic sheet (4), the sleeve (2) is provided with a funnel-shaped sealing rubber pad (7), and the arc-shaped elastic sheet (4) is located inside the sealing rubber pad (7).

3. A grouting conduit for tunnel secondary lining repair according to claim 1, characterized in that: Along the length of the sleeve (2), an annular groove (8) is provided on the outer wall of the sleeve (2), and a water-swellable rubber sleeve A (3) is provided on the annular groove (8).

4. A grouting conduit for tunnel secondary lining repair according to any one of claims 1-3, characterized in that: A groove A (9) is provided on the inner wall of the sleeve (2), and a sealing gasket A (10) or a water-swellable rubber sleeve B of the sealing sleeve (2) and the hollow tube (5) is provided on the groove A (9); or / and A groove B (11) is provided on the outer wall of the hollow tube (5), and a sealing sleeve (2) and a sealing gasket B (12) or a water-swellable rubber sleeve C of the hollow tube (5) are provided on the groove B (11).

5. A grouting conduit for tunnel secondary lining repair according to claim 4, characterized in that: The pressing block (6) is an annular block fixedly mounted on the hollow tube (5); or the pressing block (6) is a nut that is threadedly engaged with the hollow tube (5).

6. A grouting conduit for tunnel secondary lining repair according to claim 5, characterized in that: The guide tube body is used in conjunction with a hollow tube (5) located at one end outside the borehole for grouting; or The conduit body passes through the hollow tube (5) and is placed inside the borehole for grouting.

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