Jacking pipe supporting structure and supporting frame arrangement structure used for jacking of jacking pipe

Abstract

The utility model relates to a jacking pipe supporting structure and a supporting frame arrangement structure used for jacking of a jacking pipe. The method is suitable for the technical field of water conservancy and hydropower engineering. The technical problem to be solved by the utility model is to provide the jacking pipe supporting structure and the supporting frame arrangement structure for jacking the jacking pipe. According to the technical scheme, the jacking pipe supporting structure is characterized in that the jacking pipe supporting structure comprises a wear-resisting piece arranged between the bottom of a jacking pipe and a rock wall and used for supporting the jacking pipe; the fixing structures are arranged on the two sides of the wear-resisting piece and used for fixing the wear-resisting piece to the outer wall of the jacking pipe. And the slurry stringing holes are formed in the side walls of the wear-resisting pieces and the fixing structures in a penetrating mode, the slurry stringing holes are formed in the extending direction of the jacking pipe at intervals, and the slurry stringing holes are used for enabling the bentonite slurry at the two ends of the slurry stringing holes to circulate.

Description

Technical Field

[0001] The utility model relates to the field of water conservancy and hydropower engineering, in particular to a pipe jacking support structure and a support frame arrangement structure used for pipe jacking. Background Art

[0002] At present, during the jacking process, a layer of bentonite slurry is injected around the outer periphery of the jacking pipe. The slurry acts as a lubricant, protects the anti-corrosion layer of the outer wall of the jacking pipe, reduces the friction between the jacking pipe wall and the rock wall, thereby reducing the jacking thrust and ensuring the smooth progress of the jacking construction.

[0003] However, this method has the following problems:

[0004] During the long-distance jacking process, due to the long length and heavy weight of the jacking pipe, the jacking pipe is subjected to unbalanced force in the bentonite slurry, so the jacking of the jacking pipe is easy to deviate from the designed axis. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in view of the above-mentioned existing problems, a jacking pipe support structure and a support frame arrangement structure for jacking pipe are provided.

[0006] The technical solution adopted in this application is: a pipe jacking support structure, characterized in that it includes:

[0007] A wear-resistant sheet, provided between the bottom of the top pipe and the rock wall, for providing support for the top pipe;

[0008] A fixing structure, provided on both sides of the wear-resistant sheet, for fixing the wear-resistant sheet to the outer wall of the top pipe;

[0009] The slurry holes are provided through the wear-resistant plate and the side wall of the fixed structure. The slurry holes are arranged at intervals along the extension direction of the top pipe. The slurry holes are used to allow the bentonite slurry at both ends to circulate.

[0010] Through the above-mentioned technical means, the wear-resistant sheet is fixed by utilizing the fixed structure provided at the bottom of the top pipe; the wear-resistant sheet located between the outer wall of the top pipe and the rock wall can prevent the bottom of the top pipe from directly contacting the rock wall, thereby effectively protecting the anti-corrosion layer of the outer wall of the top pipe. At the same time, the slurry holes are utilized to allow the bentonite slurry on both sides of the fixed structure to circulate, so that the space between the top pipe and the rock wall is filled with bentonite slurry and naturally balanced, thereby increasing the buoyancy of the top pipe and reducing the friction between the wear-resistant sheet and the rock wall, thereby facilitating the jacking work of the top pipe.

[0011] In some embodiments, the fixing structure includes a fixed pressure plate, a screw and a nut. The fixed pressure plates are provided on both sides of the wear-resistant plate. The screw passes through the wear-resistant plate and the fixed pressure plate. The nuts are installed at both ends of the screw, so that the fixed pressure plate clamps and fixes the wear-resistant plate.

[0012] In some embodiments, a reinforcing rib is provided between the side wall of the fixed pressure plate and the outer wall of the top tube.

[0013] In some embodiments, the wear-resistant sheet is made of rubber.

[0014] Another technical solution adopted in the present application is: a support frame arrangement structure for pipe jacking, characterized in that it includes:

[0015] At least three jacking pipe support structures are arranged between the bottom of the jacking pipe and the rock wall, so that the jacking pipe is in a central position during the jacking process.

[0016] In some embodiments, any one of the top pipe support structures is installed at the bottom of the top pipe, at least two of the top pipe support structures are symmetrically installed at the bottom of the top pipe, and the two top pipe support structures are respectively located on both sides of the bottom.

[0017] The beneficial effects of the utility model are:

[0018] 1. By setting a rubber wear-resistant sheet between the outer wall of the top pipe and the rock wall, the friction between the wear-resistant sheet and the rock wall is used to effectively protect the anti-corrosion layer of the outer wall of the top pipe. The wear-resistant sheet is fixed with the help of a fixed structure. The fixed structure and the wear-resistant sheet cooperate to provide sufficient strength support for the top pipe. At the same time, the slurry holes are used to allow the bentonite slurry on both sides of the fixed structure to flow naturally, thereby ensuring that the outer wall of the top pipe and the rock wall are filled with bentonite slurry, increasing the buoyancy of the top pipe, reducing the thrust of the top pipe, and ensuring the smooth progress of the top pipe construction.

[0019] 2. A jacking pipe support structure is set at the bottom of the jacking pipe, and the jacking pipe support structures are arranged symmetrically on both sides of the bottom of the pipe. Multiple jacking pipe support structures cooperate with each other to provide support for the jacking pipe to avoid direct friction between the outer wall of the jacking pipe and the rock wall. By reasonably arranging the jacking pipe support structure, the jacking pipe is controlled to be in the center position during the jacking process, so that the jacking pipe can be evenly supported by the bentonite slurry, and then the jacking pipe can be jacked in an orderly manner along the designed axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of this application.

[0021] Figure 2 yes Figure 1 A magnified schematic diagram of area A in the middle.

[0022] Description of reference numerals:

[0023] 1. Rock wall; 2. Bentonite slurry; 3. Jacking pipe; 4. Slurry hole; 5. Reinforcement ribs; 6. Screw; 7. Nut; 8. Fixed pressure plate; 9. Wear-resistant sheet.

[0024] This specification includes references to "one embodiment" or "an embodiment." The appearance of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. The particular features, structures or characteristics may be combined in any suitable manner consistent with the present disclosure.

[0025] The term "comprising" is open ended. As used in the appended claims, the term does not exclude additional structures or steps. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below in conjunction with specific embodiments.

[0027] Embodiment 1:

[0028] Combination Figure 1 and Figure 2 As shown, this embodiment is a jacking pipe supporting structure, including a wear-resistant sheet 9, a fixed structure and a slurry hole 4, the fixed structure including a fixed pressure plate 8, a screw 6 and a nut 7, the wear-resistant sheet 9 is axially arranged between the bottom of the jacking pipe 3 and the rock wall 1, and fixed pressure plates 8 connected to the outer wall of the jacking pipe 3 are arranged on both sides of the wear-resistant sheet 9, the screw 6 passes through the fixed pressure plate 8 and the side wall of the wear-resistant sheet 9, and corresponding nuts 7 are connected to both ends of the screw 6, and the nuts 7 on both sides cooperate with the fixed pressure plate 8 to clamp and fix the middle wear-resistant sheet 9.

[0029] The slurry holes 4 penetrate the side walls of the wear-resistant plate 9 and the fixed pressure plate 8. The slurry holes 4 are arranged at intervals along the extension direction of the jacking pipe 3. The slurry holes 4 are used to allow the bentonite slurry 2 at both ends to flow naturally, so that the bentonite slurry 2 on both sides of the fixed structure is evenly filled between the outer wall of the jacking pipe 3 and the rock wall 1 and maintains balance. Then, the bentonite slurry 2 between the outer wall of the jacking pipe 3 and the rock wall 1 can increase the buoyancy of the jacking pipe 3, reduce the friction between the wear-resistant plate 9 and the rock wall 1, thereby reducing the jacking thrust and ensuring the smooth construction of the jacking pipe 3.

[0030] In some embodiments, a reinforcing rib 5 is provided between the side wall of the fixed pressure plate 8 and the outer wall of the top pipe 3 .

[0031] In some embodiments, the wear-resistant sheet 9 is made of rubber.

[0032] Embodiment 2:

[0033] This embodiment is a support frame arrangement structure for pipe jacking, including at least three pipe jacking support structures as described in the first embodiment, and the pipe jacking support structures are arranged at intervals at the bottom of the pipe 3.

[0034] Further, such as Figure 1 As shown, one jacking pipe support structure is installed at the bottom of the jacking pipe 3, and two jacking pipe support structures are installed at the bottom of the jacking pipe 3 and are located on both sides of the bottom of the pipe. The two jacking pipe support structures are arranged symmetrically, so that the jacking pipe 3 is in a centered position during the jacking process.

[0035] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A pipe jacking support structure, characterized in that: include: A wear-resistant sheet (9) is arranged between the bottom of the top pipe (3) and the rock wall (1) and is used to provide support for the top pipe (3); A fixing structure, arranged on both sides of the wear-resistant sheet (9), and used for fixing the wear-resistant sheet (9) to the outer wall of the top pipe (3); The slurry holes (4) are provided through the wear-resistant plate (9) and the side wall of the fixed structure. The slurry holes (4) are arranged at intervals along the extension direction of the top pipe (3). The slurry holes (4) are used to allow the bentonite slurry at both ends to circulate.

2. A pipe jacking support structure according to claim 1, characterized in that: The fixing structure comprises a fixed pressure plate (8), a screw rod (6) and a nut (7); the fixed pressure plates (8) are provided on both sides of the wear-resistant sheet (9); the screw rod (6) passes through the wear-resistant sheet (9) and the fixed pressure plate (8); the nuts (7) are installed at both ends of the screw rod (6), so that the fixed pressure plate (8) clamps and fixes the wear-resistant sheet (9).

3. A pipe jacking support structure according to claim 2, characterized in that: A reinforcing rib (5) is provided between the side wall of the fixed pressure plate (8) and the outer wall of the top pipe (3).

4. A pipe jacking support structure according to any one of claims 1 to 3, characterized in that: The wear-resistant sheet (9) is made of rubber.

5. A support frame arrangement structure for pipe jacking, characterized in that: include: At least three jacking pipe support structures according to any one of claims 1 to 4 are arranged between the bottom of the jacking pipe (3) and the rock wall (1), so that the jacking pipe (3) is in a central position during the jacking process.

6. A support frame arrangement structure for pipe jacking according to claim 5, characterized in that: Any one of the top pipe support structures is installed at the bottom of the top pipe (3), at least two of the top pipe support structures are symmetrically installed at the bottom of the top pipe (3), and the two top pipe support structures are respectively located on both sides of the bottom of the pipe.

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