Device for preventing displacement of curtain grouting pipe in underground diaphragm wall

Abstract

The utility model relates to the technical field of curtain grouting, disclose a kind of underground anti-seepage wall in reserve curtain grouting pipe device of preventing displacement, including mounting plate, the fixed assembly is provided on the mounting plate upper surface, the fixed assembly includes first connecting piece, the first connecting piece lower surface is fixedly connected on the mounting plate upper surface, first connecting piece inner wall is rotatably connected with first fixed column, the first fixed column inner wall is screw thread connection with adjusting lever, first connecting piece inner wall is fixedly connected with connecting column, the connecting column outer wall is rotatably connected with second connecting piece, the second connecting piece inner wall is fixedly connected with third fixed column, the third fixed column outer wall is rotatably connected with gyro wheel. In the utility model, by rotating adjusting lever inwards, second connecting piece moves inwards, so that gyro wheel is attached on the grouting pipe surface, so that grouting pipe can keep vertical when moving downwards, without subsequent fine adjustment.

Description

Technical Field

[0001] This utility model relates to the field of curtain grouting technology, and in particular to a device for pre-installing curtain grouting pipes in underground anti-seepage walls to prevent displacement. Background Technology

[0002] In water conservancy and hydropower projects, foundation seepage prevention is always a core aspect of ensuring dam safety and project durability. When the rock strata have well-developed fissures or high permeability, groundwater infiltration can not only reduce the bearing capacity of the foundation but also cause safety hazards such as dam leakage and piping. Curtain grouting involves injecting cement grout into the rock fissures through boreholes to form a continuous and dense seepage prevention curtain, effectively reducing foundation permeability and ensuring dam stability and durability. This technology has been proven through long-term practice and has become a fundamental seepage prevention method for deep underground applications.

[0003] Traditional curtain grouting typically involves implementing seepage prevention through a pre-designed array of boreholes. The process begins by determining borehole locations based on geological conditions, followed by vertical drilling to the predetermined depth. During drilling, the characteristics of the rock strata are recorded. After drilling, the borehole walls are flushed to remove impurities. A water pressure test is then conducted to assess rock permeability, providing a reference for adjusting grouting parameters. The grouting stage employs a segmented process. Specialized equipment is used to inject cement grout into the boreholes, and pressure is controlled to ensure the grout fully fills the rock fissures. Construction of that segment ends once the grout return at the borehole opening stabilizes. Finally, the boreholes are sealed to ensure the grout solidifies, forming a continuous seepage prevention curtain that effectively blocks groundwater seepage channels and guarantees the structural safety of the project.

[0004] However, after the existing grouting pipe device is placed into the anti-seepage wall trench, it still requires a series of meticulous fine-tuning operations to ensure that it can maintain a precise vertical position, thereby meeting the stringent requirements of engineering design and construction. This process not only increases the complexity and workload of construction but may also have a certain impact on the overall construction progress and anti-seepage effect. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a pre-reserved curtain grouting pipe device for underground anti-seepage walls to prevent displacement, aiming to improve the problem that traditional grouting pipe devices still need to be finely adjusted after installation to keep them vertical.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for pre-reserved curtain grouting pipe in an underground anti-seepage wall to prevent displacement, comprising an installation plate, wherein a sleeve is fixedly connected to the lower surface of the installation plate, and a fixing component is provided on the upper surface of the installation plate; The fixing assembly includes a first connecting piece, the lower surface of which is fixedly connected to the upper surface of the mounting plate. A first fixing post is rotatably connected to the inner wall of the first connecting piece. An adjusting rod is threadedly connected to the inner wall of the first fixing post. A connecting post is fixedly connected to the inner wall of the first connecting piece. A second connecting piece is rotatably connected to the outer wall of the connecting post. A third fixing post is fixedly connected to the inner wall of the second connecting piece. A roller is rotatably connected to the outer wall of the third fixing post. A second fixing post is rotatably connected to the inner wall of the second connecting piece.

[0007] Furthermore, a fixing block is fixedly connected to the upper surface of the mounting plate, and a hole is opened inside the fixing block. An extension rod is installed inside the hole, and a spring is installed on the outer wall of the extension rod. One end of the spring is fixedly connected to the inside of the hole, and the other end of the spring is fixedly connected to one end of the extension rod.

[0008] Furthermore, one end of the adjusting rod is threaded into the first fixed post, and the other end of the adjusting rod is rotatably connected into the second fixed post.

[0009] Furthermore, a first buckle is fixedly connected to the upper surface of the mounting plate, and fixing pins are provided on both sides of the outer wall of the mounting plate.

[0010] Furthermore, a second buckle is fixedly connected to one end of the extension rod, and a top post is attached to one side of the outer wall of the second buckle. The outer wall of the top post is rotatably connected to the inside of the fixing block.

[0011] Furthermore, the inner wall of the sleeve is fitted with a grouting pipe, the outer wall of the grouting pipe is fitted with the outer wall of the first buckle, and the outer wall of the grouting pipe is fitted with the outer wall of the second buckle.

[0012] Furthermore, a recessed block is fixedly connected to one side of the outer wall of the fixing block.

[0013] Furthermore, a protrusion is fixedly connected to the outer wall of the top column, and the protrusion is rotatably connected inside the concave block.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the sleeve set on the lower surface of the mounting plate is embedded into the pre-cut grouting groove, and then the mounting plate is fixed to the ground with a fixing pin. After the mounting plate is fixed, the grouting pipe is inserted into the sleeve, and then the adjusting rod is rotated to move the second connecting piece inward, so that the roller is in contact with the surface of the grouting pipe, so that the grouting pipe can remain vertical when moving downward, thereby avoiding the need for tedious fine-tuning operations during the grouting process and improving construction efficiency and accuracy.

[0015] 2. In this utility model, by pushing the top column inward, the second buckle moves inward until it fits the surface of the grouting pipe. Then, by rotating the top column, the protrusion rotates into the concave block, thereby fixing the grouting pipe and preventing the grouting pipe from shifting during the grouting process, which would affect the overall project quality. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a pre-reserved curtain grouting pipe device for preventing displacement within an underground seepage-proof wall proposed in this utility model. Figure 2 This is a schematic diagram of the first connecting piece structure of a pre-reserved curtain grouting pipe device in an underground anti-seepage wall to prevent displacement, as proposed in this utility model. Figure 3 A schematic diagram of the roller structure of a pre-reserved curtain grouting pipe device in an underground seepage-proof wall to prevent displacement, as proposed in this utility model. Figure 4 This is a schematic diagram of the second snap-fit ​​structure of a pre-reserved curtain grouting pipe device in an underground anti-seepage wall to prevent displacement, as proposed in this utility model. Figure 5 This is a schematic diagram of the fixing block structure of a pre-reserved curtain grouting pipe device in an underground anti-seepage wall to prevent displacement, as proposed in this utility model.

[0017] Legend: 1. Grouting pipe; 2. Mounting plate; 3. Fixing pin; 4. Sleeve; 5. First connecting piece; 6. Connecting column; 7. First fixing column; 8. Adjusting rod; 9. Second connecting piece; 10. Roller; 11. Second fixing column; 12. Third fixing column; 13. First buckle; 14. Second buckle; 15. Extension rod; 16. Spring; 17. Top column; 18. Fixing block; 19. Protrusion; 20. Concave block; 21. Hole. Detailed Implementation

[0018] 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.

[0019] Reference Figure 2 and Figure 3This utility model provides an embodiment of a pre-reserved curtain grouting pipe device for preventing displacement within an underground seepage-proof wall. The device includes an installation plate 2, with a sleeve 4 fixedly connected to the lower surface of the installation plate 2. The sleeve 4 is used to embed into a pre-drilled grouting hole in the ground to position the installation plate 2. A fixing component is provided on the upper surface of the installation plate 2. The fixing component includes a first connecting piece 5, the lower surface of which is fixedly connected to the upper surface of the installation plate 2. The first connecting piece 5 is used to fix the fixing component to the upper surface of the installation plate 2. A first fixing column 7 is rotatably connected to the inner wall of the first connecting piece 5. An adjusting rod 8 is threadedly connected to the inner wall of the first fixing column 7. The adjusting rod 8 is used to adjust the distance between the first fixing column 7 and the second fixing column 11. The distance between them is such that the roller 10 fits against the outer wall of the grouting pipe 1. A connecting post 6 is fixedly connected to the inner wall of the first connecting piece 5. A second connecting piece 9 is rotatably connected to the outer wall of the connecting post 6. The connecting post 6 is used to connect the first connecting piece 5 and the second connecting piece 9. A third fixing post 12 is fixedly connected to the inner wall of the second connecting piece 9. The third fixing post 12 is used to make the roller 10 rotate on its outer wall, so that the grouting pipe 1 can move vertically downward. The roller 10 is rotatably connected to the outer wall of the third fixing post 12. A second fixing post 11 is rotatably connected to the inner wall of the second connecting piece 9. The second fixing post 11 is used to cooperate with the first fixing post 7 and the adjusting rod 8, so that the adjusting rod 8 drives the second fixing post 11, and then drives the roller 10 to move.

[0020] Specifically, after the mounting plate 2 is fixed, the grouting pipe 1 is inserted into the inner cavity of the sleeve 4. Then, by rotating the adjusting rod 8, the second connecting piece 9 is moved inward, so that the roller 10 is in contact with the surface of the grouting pipe 1. Thus, the roller 10 can provide stable support force during the downward movement of the grouting pipe 1, ensuring that the grouting pipe 1 always remains vertical. This avoids the need for tedious fine-tuning operations during the grouting process and greatly improves construction efficiency and accuracy.

[0021] Reference Figure 1 - Figure 5A fixing block 18 is fixedly connected to the upper surface of the mounting plate 2. A hole 21 is opened inside the fixing block 18, and an extension rod 15 is installed inside the hole 21. A spring 16 is attached to the outer wall of the extension rod 15. The extension rod 15, in conjunction with the spring 16, can quickly spring back the second clip 14 when the grouting pipe 1 is released, thus achieving a rapid release of the fixation. One end of the spring 16 is fixedly connected inside the hole 21, and the other end is fixedly connected to one end of the extension rod 15. One end of the adjusting rod 8 is threaded into the first fixing post 7, and the other end is rotatably connected into the second fixing post 11. A first clip 13 is fixedly connected to the upper surface of the mounting plate 2. Fixing pins 3 are provided on both sides of the outer wall of the mounting plate 2. The fixing pins 3 are used to secure the mounting plate after installation. The mounting plate 2 is fixed after the extension rod 15. A second buckle 14 is fixedly connected to one end of the extension rod 15. A top post 17 is attached to one side of the outer wall of the second buckle 14. The top post 17 is used to move the second buckle 14 inward so that the second buckle 14 is attached to the surface of the grouting pipe 1, thereby fixing the grouting pipe 1. The outer wall of the top post 17 is rotatably connected to the inside of the fixing block 18. The inner wall of the sleeve 4 is attached to the grouting pipe 1. The outer wall of the grouting pipe 1 is attached to the outer wall of the first buckle 13. The outer wall of the grouting pipe 1 is attached to the outer wall of the second buckle 14. A concave block 20 is fixedly connected to one side of the outer wall of the fixing block 18. A protrusion 19 is fixedly connected to the outer wall of the top post 17. The protrusion 19 is rotatably connected to the inside of the concave block 20. The protrusion 19 is used to rotate into the inside of the concave block 20, thereby fixing the top post 17.

[0022] Specifically, the sleeve 4, which is set on the lower surface of the mounting plate 2, is embedded into the grouting groove pre-cut in the ground, ensuring that the sleeve 4 fits snugly into the grouting groove. Next, the mounting plate 2 is fixed to the ground using the fixing pin 3, ensuring that the position of the mounting plate 2 does not shift. By pushing the top column 17 inward, the second clip 14 moves inward until it fits against the surface of the grouting pipe 1. Then, the top column 17 is rotated, causing the protrusion 19 to rotate into the concave block 20, thus fixing the grouting pipe 1 and preventing displacement of the grouting pipe 1 during the grouting process, which could affect the overall project quality.

[0023] Working principle: During curtain grouting, firstly, the sleeve 4 on the lower surface of the mounting plate 2 is embedded into the pre-cut grouting groove. Then, the mounting plate 2 is fixed to the ground using the fixing pin 3. After fixing the mounting plate 2, the grouting pipe 1 is inserted into the sleeve 4. Then, the adjusting rod 8 is rotated, causing the adjusting rod 8 to drive the second fixing column 11 to move inward, thereby causing the second connecting piece 9 to rotate on the connecting column 6. This increases the distance between the first fixing column 7 and the second fixing column 11, allowing the roller 10 to fit against the surface of the grouting pipe 1. This ensures that the grouting pipe 1 remains vertical when moving downward, without the need for subsequent fine-tuning. Then, the top column 17 is pushed inward, causing the second buckle 14 to move inward until it fits against the surface of the grouting pipe 1. This causes the first clip 13 and the second clip 14 to lock the grouting pipe 1, preventing it from shifting downwards. Then, the top column 17 is rotated, causing the protrusion 19 to rotate into the recess 20, thus fixing the grouting pipe 1 and preventing displacement of the grouting pipe 1 during grouting, which could affect the overall project quality. After grouting is completed, the top column 17 is rotated, causing the protrusion 19 to rotate outside the recess 20, releasing the top column 17 from fixing the second clip 14. At the same time, the spring 16 drives the extension rod 15 to rebound, causing the second clip 14 to move outwards, thus releasing the fixing of the grouting pipe 1. Then, the fixing pin 3 is removed, and the mounting plate 2 can be removed by moving it upwards.

[0024] 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 device for pre-installing curtain grouting pipes within an underground seepage-proof wall to prevent displacement, comprising an installation plate (2), characterized in that: A sleeve (4) is fixedly connected to the lower surface of the mounting plate (2), and a fixing component is provided on the upper surface of the mounting plate (2); The fixing assembly includes a first connecting piece (5), the lower surface of which is fixedly connected to the upper surface of the mounting plate (2). A first fixing post (7) is rotatably connected to the inner wall of the first connecting piece (5). An adjusting rod (8) is threadedly connected to the inner wall of the first fixing post (7). A connecting post (6) is fixedly connected to the inner wall of the first connecting piece (5). A second connecting piece (9) is rotatably connected to the outer wall of the connecting post (6). A third fixing post (12) is fixedly connected to the inner wall of the second connecting piece (9). A roller (10) is rotatably connected to the outer wall of the third fixing post (12). A second fixing post (11) is rotatably connected to the inner wall of the second connecting piece (9).

2. The device for pre-reserved curtain grouting pipes in an underground seepage-proof wall to prevent displacement, as described in claim 1, is characterized in that: A fixing block (18) is fixedly connected to the upper surface of the mounting plate (2). A hole (21) is opened inside the fixing block (18). An extension rod (15) is provided inside the hole (21). A spring (16) is provided on the outer wall of the extension rod (15). One end of the spring (16) is fixedly connected inside the hole (21), and the other end of the spring (16) is fixedly connected to one end of the extension rod (15).

3. The device for pre-reserved curtain grouting pipes within an underground seepage-proof wall to prevent displacement, as described in claim 1, is characterized in that: One end of the adjusting rod (8) is threaded into the first fixed post (7), and the other end of the adjusting rod (8) is rotatably connected into the second fixed post (11).

4. The device for pre-reserved curtain grouting pipes in an underground seepage-proof wall to prevent displacement, as described in claim 1, is characterized in that: The upper surface of the mounting plate (2) is fixedly connected with a first buckle (13), and both sides of the outer wall of the mounting plate (2) are provided with fixing pins (3).

5. A pre-installed curtain grouting pipe device for preventing displacement within an underground seepage-proof wall according to claim 2, characterized in that: One end of the extension rod (15) is fixedly connected to a second buckle (14), and a top post (17) is attached to one side of the outer wall of the second buckle (14). The outer wall of the top post (17) is rotatably connected to the inside of the fixing block (18).

6. The device for pre-reserved curtain grouting pipes in an underground seepage-proof wall to prevent displacement according to claim 1, characterized in that: The inner wall of the sleeve (4) is fitted with a grouting pipe (1), the outer wall of the grouting pipe (1) is fitted with the outer wall of the first buckle (13), and the outer wall of the grouting pipe (1) is fitted with the outer wall of the second buckle (14).

7. A pre-installed curtain grouting pipe device for preventing displacement within an underground seepage-proof wall according to claim 2, characterized in that: A recessed block (20) is fixedly connected to one side of the outer wall of the fixing block (18).

8. A pre-installed curtain grouting pipe device for preventing displacement within an underground seepage-proof wall according to claim 5, characterized in that: The top column (17) is fixedly connected to a protrusion (19) on its outer wall, and the protrusion (19) is rotatably connected inside the concave block (20).

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