Novel diaphragm wall embedded grouting pipe structure
By opening through holes in the outer wall of the grouting pipe and combining them with threaded protrusions and rubber sleeves, the problem of poor adhesion between the grouting pipe and concrete is solved, achieving a tight connection between the pipe body and the concrete and enabling multiple grouting functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANDAN WATER RESOURCES & HYDROPOWER SURVEY DESIGN & RES INST
- Filing Date
- 2025-08-01
- Publication Date
- 2026-06-30
AI Technical Summary
The existing grouting pipes have poor adhesion to concrete, leading to a risk of leakage.
A through hole is made on the outer wall of the grouting pipe, and a tight connection between the pipe body and the concrete is achieved through a design of threaded protrusions and rubber sleeves, combined with a fixing mechanism and sealing components.
It improves the adhesion between the grouting pipe and the concrete, avoids the risk of leakage, and enables multiple grouting functions.
Smart Images
Figure CN224433682U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grouting pipe technology for anti-seepage walls, and in particular to a novel pre-embedded grouting pipe structure for anti-seepage walls. Background Technology
[0002] As the core structure for blocking groundwater seepage in water conservancy and underground engineering projects, the seepage prevention performance of the cutoff wall directly affects the safety, stability, and service life of the project. During the construction of the cutoff wall, pre-embedded grouting pipes are key components for subsequent reinforcement and grouting. By injecting grout into the pipes, the internal voids of the wall can be filled, the structural density strengthened, and thus the integrity and seepage resistance of the cutoff wall improved.
[0003] A search revealed Chinese Patent Publication No. CN220644270U, which discloses a curtain grouting pipe, comprising a concrete layer, an outer curtain grouting pipe body, and a curtain grouting pipe. It also includes a ground layer, a material conveying structure, a pre-embedded structure, a support structure, and a snap-fit structure. A concrete layer is poured above the ground layer, and grouting boreholes are formed in both the ground layer and the concrete layer. The pre-embedded structure is embedded in both the ground layer and the concrete layer. This application utilizes a rotating motor to drive a material conveying screw, which transports the grout from the overflow pipe to the right end, finally discharging it through the discharge pipe. This facilitates better grout delivery and prevents sedimentation during grout flow, thus avoiding blockage at the overflow port. The inner support ring limits the movement of the curtain grouting pipe, preventing vertical deviation. The outer support ring, inner support ring, and support block are located inside the outer curtain grouting pipe body, enhancing the support effect on the sidewalls of the grouting boreholes.
[0004] However, in actual use, the above-mentioned grouting pipes have the following problems: the outer surface of the grouting pipes is mostly designed to be smooth. When pouring concrete, in order to avoid the position of the grouting pipes being misaligned, manual vibration is usually used around them. However, during the pouring process, air bubbles in the grout can easily form tiny gaps between the grouting pipes and the concrete, resulting in poor adhesion between the grouting pipes and the concrete, which leads to the risk of leakage. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a novel pre-embedded grouting pipe structure for anti-seepage walls, aiming to solve the problem of poor adhesion between grouting pipes and concrete in the prior art, which leads to the risk of leakage.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a novel pre-embedded grouting pipe structure for an anti-seepage wall, comprising a pipe body, wherein multiple through holes are provided on the outer wall of the pipe body, multiple threaded protrusions are fixedly connected to the outer wall of the pipe body, a rubber sleeve is provided on the outer wall of the pipe body, the outer wall of the threaded protrusions passes through the rubber sleeve, a fixing mechanism is fixedly connected to the upper side of the pipe body, the upper side of the rubber sleeve is fixedly connected to the lower side of the fixing mechanism, the upper side of the fixing mechanism is threadedly connected to the lower side of another pipe body, and a sealing assembly is provided at the bottom of the lowest part of the pipe body.
[0007] The above technical solution solves the problem of poor adhesion between the grouting pipe and concrete, which leads to leakage risk, by creating through holes, connecting the threaded protrusions and concrete, and combining the design of the rubber sleeve.
[0008] As a further description of the above technical solution:
[0009] The fixing mechanism includes a ring plate, the lower side of which is fixedly connected to the upper side of the tube body, the inner wall of which is threadedly connected to the lower outer wall of another tube body, and fixing components are rotatably connected to the outer walls on both sides of the ring plate.
[0010] The above technical solution achieves the function of fixing the pipe body by means of the fixed connection between the ring plate and the pipe body, and the rotational connection between the fixing component and the ring plate.
[0011] As a further description of the above technical solution:
[0012] The fixing component includes an anchor hook, and rotating blocks are fixedly connected to both sides of the ring plate. One side of the anchor hook is rotatably connected to the inside of the rotating block, and the other side of the anchor hook is used to fix it to the steel cage of the seepage-proof wall.
[0013] The above technical solution achieves the following: by fixing the anchor hook and the steel cage, the rotating block is fixed; and by fixing the rotating block and the ring plate, the fixing component fixes the ring plate.
[0014] As a further description of the above technical solution:
[0015] The sealing assembly includes a plug, which is disposed at the bottom of the lowest tube body.
[0016] The above technical solution involves a plug design that seals the bottom of the lowest pipe during concrete pouring, preventing concrete from blocking the pipe and affecting subsequent grouting.
[0017] As a further description of the above technical solution:
[0018] The sealing assembly includes a second one-way valve, which is located on the lower inner wall of the lowest tube. A hemispherical baffle is located on the lower side of the lowest tube, and the outer wall of the hemispherical baffle has multiple filter holes. The second one-way valve is located above the hemispherical baffle.
[0019] The above technical solution protects the one-way valve by using a hemispherical baffle and achieves the function of multiple grouting through the design of the one-way valve.
[0020] As a further description of the above technical solution:
[0021] A rubber one-way valve is installed inside the tube body, and the rubber one-way valve is located inside the through hole.
[0022] The above technical solution provides space for the rubber check valve through the through hole and provides support for the rubber check valve through the pipe body, thereby helping to realize the function of multiple grouting of the structure.
[0023] As a further description of the above technical solution:
[0024] The inner wall of the ring plate is provided with internal threads, and the lower outer wall of the tube body is provided with external threads, and the internal threads and external threads are threadedly connected.
[0025] The above technical solution achieves the threaded connection between the ring plate and the pipe body through the threaded connection of internal and external threads, thereby enabling the rapid connection and assembly of multiple pipe bodies.
[0026] As a further description of the above technical solution:
[0027] A sealing gasket is provided on the upper side of the tube body, and the sealing gasket is located inside the annular plate.
[0028] The above technical solution achieves a tight seal between multiple pipes through the design of the sealing gasket, thereby improving the grouting efficiency of the structure.
[0029] This utility model has the following beneficial effects:
[0030] 1. In this utility model, multiple pipes are assembled and fixed by a fixing mechanism. The design of through holes, rubber sleeves and threaded protrusions improves the adhesion between the pipes and concrete. With the cooperation of sealing components, the problem of poor adhesion between grouting pipes and concrete, which leads to leakage risk, is solved in the prior art.
[0031] 2. In this utility model, the ring plate is fixed by connecting the anchor hook and the reinforcing cage, rotating the rotating block and the anchor hook, and fixing the rotating block and the ring plate, thereby realizing the function of fixing the pipe body by the fixing mechanism.
[0032] 3. In this utility model, the hemispherical baffle protects the second one-way valve, the pipe body supports the second one-way valve and the rubber one-way valve, and the combination of through holes and filter holes enables the structure to perform multiple grouting functions. Attached Figure Description
[0033] Figure 1 This is a three-dimensional structural diagram of a rubber sleeve for a novel pre-embedded grouting pipe structure for an anti-seepage wall proposed in this utility model.
[0034] Figure 2 This is a three-dimensional structural diagram of a novel pre-embedded grouting pipe structure for an anti-seepage wall proposed in this utility model.
[0035] Figure 3 This utility model presents a schematic diagram of two one-way valves in a novel pre-embedded grouting pipe structure for an anti-seepage wall.
[0036] Figure 4 This is a schematic diagram of the internal structure of the annular plate of a novel pre-embedded grouting pipe structure for an anti-seepage wall proposed in this utility model.
[0037] Figure 5 This is a schematic diagram of the upper side structure of a novel pre-embedded grouting pipe structure for an anti-seepage wall proposed in this utility model.
[0038] Legend:
[0039] 1. Threaded protrusion; 2. Rubber sleeve; 3. Fixing mechanism; 30. Ring plate; 31. Fixing assembly; 310. Anchor hook; 311. Rotating block; 4. External thread; 5. Filter hole; 6. Hemispherical baffle; 7. Tube body; 8. Through hole; 9. Rubber one-way valve; 10. Sealing assembly; 11. Plug; 12. One-way valve; 13. Internal thread; 14. Sealing gasket. Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0041] Reference Figure 1 and Figure 2An embodiment of this utility model is provided: a novel anti-seepage wall pre-embedded grouting pipe structure, including a pipe body 7, a plurality of through holes 8 opened on the outer wall of the pipe body 7, a plurality of threaded protrusions 1 fixedly connected to the outer wall of the pipe body 7, a rubber sleeve 2 provided on the outer wall of the pipe body 7, the outer wall of the threaded protrusions 1 passing through the rubber sleeve 2, a fixing mechanism 3 fixedly connected to the upper side of the pipe body 7, the upper side of the rubber sleeve 2 fixedly connected to the lower side of the fixing mechanism 3, the upper side of the fixing mechanism 3 threadedly connected to the lower side of another pipe body 7, and a sealing component 10 provided at the bottom of the lowest pipe body 7;
[0042] In this embodiment, Figure 1 The front, back, left, and right are the directions. The pipe body 7 can be made of high-strength PVC pipe or stainless steel pipe. The rubber sleeve 2 can be made of rubber. The threaded protrusion 1 is a threaded protrusion that protrudes outward to improve the connection strength with concrete.
[0043] Specifically, when using this structure, multiple pipes 7 can be quickly assembled and formed into the required length through the threaded connection between the upper side of the fixing mechanism 3 and the lower outer wall of the pipe 7. Then, the pipe 7 is installed in the preset position inside the anti-seepage wall reinforcement cage, and the pipe 7 is fixed to the reinforcement cage through the fixing mechanism 3. After the concrete is poured and a certain time has passed, grouting is started on the pipe 7. The sealing component 10 at the bottom of the lowest pipe 7 is separated from the pipe 7 by high pressure and other methods. The grout enters the concrete through the lowest pipe 7 to fill the gaps.
[0044] Simultaneously, the grout inside the pipe body 7 permeates through the through-hole 8 on the outer wall of the pipe body 7 into the space between the rubber sleeve 2 and the pipe body 7. The design of the threaded protrusion 1 passing through the rubber sleeve 2 allows the grout to permeate from the gap between the rubber sleeve 2 and the threaded protrusion 1 to the outer wall of the rubber sleeve 2, filling the gap between the concrete and the rubber sleeve 2. Furthermore, the continuous permeation of the grout through the through-hole 8 fills the space between the pipe body 7 and the rubber sleeve 2, thereby increasing the volume of the rubber sleeve 2, compressing the concrete, increasing the density of the concrete surrounding the pipe body 7, and achieving a seamless bond between the pipe body 7 and the concrete through the filling of the grout. This solves the problem of poor adhesion between the grouting pipe and the concrete in existing technologies, which leads to the risk of leakage.
[0045] Reference Figure 1 The fixing mechanism 3 includes a ring plate 30, the lower side of the ring plate 30 is fixedly connected to the upper side of the tube body 7, the inner wall of the ring plate 30 is threadedly connected to the lower outer wall of another tube body 7, and the two outer walls of the ring plate 30 are rotatably connected to fixing components 31.
[0046] Specifically, the pipe body 7 is fixed by fixing the fixing component 31 to the steel cage of the anti-permeability wall, and the fixing mechanism 3 connects and fixes the pipe body 7 by threading the inner wall of the ring plate 30 and the lower outer wall of the pipe body 7.
[0047] Reference Figure 1 The fixing component 31 includes an anchor hook 310. Rotating blocks 311 are fixedly connected to both sides of the ring plate 30. One side of the anchor hook 310 is rotatably connected to the inside of the rotating block 311, and the other side of the anchor hook 310 is used to fix it to the steel cage of the seepage-proof wall.
[0048] Specifically, by rotating the anchor hook 310 and the rotating block 311, the angle between the rotating block 311 and the anchor hook 310 can be adjusted, so that the rotating block 311 can be fixed on a suitable steel bar, thereby realizing the function of fixing the fixing component 31.
[0049] Reference Figure 2 The sealing assembly 10 includes a plug 11, which is disposed at the bottom of the lowest tube body 7;
[0050] Specifically, the plug 11 can be a rubber stopper. The plug 11 can prevent the pipe body 7 from being blocked during concrete pouring. After the concrete has been poured for a certain period of time, the plug 11 can be flushed off by high-pressure water flushing or other means. Then, grouting can be carried out through the pipe body 7, which helps to realize the grouting function of the pipe body 7.
[0051] Reference Figure 1 and Figure 3 The present invention also provides an embodiment in which the sealing assembly 10 includes a second one-way valve 12, the second one-way valve 12 is disposed on the lower inner wall of the lowermost tube 7, a hemispherical baffle 6 is disposed on the lower side of the lowermost tube 7, a plurality of filter holes 5 are opened on the outer wall of the hemispherical baffle 6, and the second one-way valve 12 is disposed above the hemispherical baffle 6.
[0052] Specifically, in this embodiment, the one-way valve 12 can be a rubber one-way valve or a stainless steel one-way valve. When pouring concrete, the hemispherical baffle 6 blocks large particles of concrete to avoid damaging the one-way valve 12. When grouting is performed through the pipe body 7, the grout enters the concrete through the one-way valve 12 to fill the gaps, thereby realizing the grouting function of the structure. When grouting is completed, water can be used to clean the area around the one-way valve 12 to facilitate the next grouting, thus realizing the function of the structure being able to be grouted multiple times.
[0053] Reference Figure 2 A rubber check valve 9 is installed inside the pipe body 7, and the rubber check valve 9 is installed inside the through hole 8.
[0054] Specifically, the design of the rubber check valve 9 prevents the grout from blocking the through hole 8, thus enabling the structure to be grouted multiple times.
[0055] Reference Figure 1 and Figure 4The inner wall of the ring plate 30 is provided with an internal thread 13, and the lower outer wall of the tube body 7 is provided with an external thread 4. The internal thread 13 and the external thread 4 are threadedly connected.
[0056] Specifically, the threaded connection of internal thread 13 and external thread 4 enables the rapid assembly and connection of multiple tube bodies 7.
[0057] Reference Figure 5 A sealing gasket 14 is provided on the upper side of the tube body 7, and the sealing gasket 14 is located inside the annular plate 30.
[0058] Specifically, the design of the sealing gasket 14 achieves sealing when multiple pipes 7 are connected, thereby helping to improve the efficiency of grouting of the structure.
[0059] Working principle: When using this structure, multiple pipes 7 can be quickly assembled into the required length through the threaded connection between the upper side of the fixing mechanism 3 and the lower outer wall of the pipe body 7. Then, the pipe body 7 is installed in the preset position inside the anti-seepage wall steel cage, and the anchor hook 310 is fixed on the steel cage, thus completing the assembly and fixing of the structure.
[0060] After the concrete is poured and a certain period of time has elapsed, grouting begins. If the sealing component 10 is a plug 11, the plug 11 is removed by high-pressure water flushing or other methods before grouting. If the sealing component 10 is a one-way valve 12, grouting can be performed directly. The grout enters the concrete through the bottom pipe 7 to fill the gaps from bottom to top. At the same time, the grout inside the pipe 7 permeates through the rubber one-way valve 9 on the pipe 7 to the space between the rubber sleeve 2 and the pipe 7, and then permeates through the gap between the rubber sleeve 2 and the threaded protrusion 1 to the outer wall of the rubber sleeve 2, filling the gap between the concrete and the rubber sleeve 2. Furthermore, the continuous permeation of the grout from the through hole 8 ensures a seamless bond between the pipe 7 and the concrete, thus solving the problem of poor adhesion between the grouting pipe and the concrete in the prior art, which leads to the risk of leakage.
[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A new type of diaphragm wall pre-embedded grouting pipe structure, comprising a pipe body (7), characterized in that: The outer wall of the tube (7) is provided with multiple through holes (8), and multiple threaded protrusions (1) are fixedly connected to the outer wall of the tube (7). A rubber sleeve (2) is provided on the outer wall of the tube (7). The outer wall of the threaded protrusion (1) passes through the rubber sleeve (2). A fixing mechanism (3) is fixedly connected to the upper side of the tube (7). The upper side of the rubber sleeve (2) is fixedly connected to the lower side of the fixing mechanism (3). The upper side of the fixing mechanism (3) is threadedly connected to the lower side of another tube (7). A sealing component (10) is provided at the bottom of the lowest tube (7).
2. The new diaphragm wall pre-buried grouting pipe structure according to claim 1, characterized in that: The fixing mechanism (3) includes a ring plate (30), the lower side of which is fixedly connected to the upper side of the tube body (7), the inner wall of the ring plate (30) is threadedly connected to the lower outer wall of another tube body (7), and the two outer walls of the ring plate (30) are rotatably connected to fixing components (31).
3. The new diaphragm wall pre-buried grouting pipe structure according to claim 2, characterized in that: The fixing component (31) includes an anchor hook (310), and rotating blocks (311) are fixedly connected to both sides of the ring plate (30). One side of the anchor hook (310) is rotatably connected to the inside of the rotating block (311), and the other side of the anchor hook (310) is used to fix it to the steel cage of the seepage-proof wall.
4. The novel pre-embedded grouting pipe structure for an anti-seepage wall according to claim 1, characterized in that: The sealing assembly (10) includes a plug (11) which is located at the bottom of the lowest side tube (7).
5. The novel pre-embedded grouting pipe structure for an anti-seepage wall according to claim 1, characterized in that: The sealing assembly (10) includes a second one-way valve (12), which is located on the lower inner wall of the lowest tube (7). A hemispherical baffle (6) is located on the lower side of the lowest tube (7). Multiple filter holes (5) are provided on the outer wall of the hemispherical baffle (6). The second one-way valve (12) is located above the hemispherical baffle (6).
6. The novel pre-embedded grouting pipe structure for an anti-seepage wall according to claim 1, characterized in that: The tube body (7) is provided with a rubber one-way valve (9) inside, and the rubber one-way valve (9) is provided inside the through hole (8).
7. The novel pre-embedded grouting pipe structure for an anti-seepage wall according to claim 2, characterized in that: The inner wall of the ring plate (30) is provided with an internal thread (13), and the lower outer wall of the tube body (7) is provided with an external thread (4). The internal thread (13) and the external thread (4) are threadedly connected.
8. The novel pre-embedded grouting pipe structure for an anti-seepage wall according to claim 2, characterized in that: A sealing gasket (14) is provided on the upper side of the tube body (7), and the sealing gasket (14) is located inside the ring plate (30).