Split grouting type tunnel top face tunneling pressure supporting structure

Abstract

The application discloses a split grouting type tunnel top face tunneling pressure supporting structure and relates to the technical field of tunnel supporting. The installation supporting part is provided with an installation upper mold part, a limiting installation part is fixedly connected to the installation supporting part, a row of grouting anchoring parts are threadedly connected to the installation upper mold part, a row of top pressure driving parts are fixedly connected to the installation supporting part, a row of top pressure demolding parts are slidably connected to the installation supporting part, and two rotating adapting parts are fixedly connected to the bottom of the installation supporting part. The supporting process can be optimized, one-time anchoring and forming can be realized, the structural strength is increased, the overall installation efficiency can be further improved, the problems that the existing split grouting type tunnel top face tunneling pressure supporting structure cannot realize one-time auxiliary pressurization and anchoring, the anchoring integrality is poor, double-layer grouting supporting cannot be realized, and the overall supporting effect is reduced are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel support, in particular to a split grouting type tunnel top surface excavation pressure support structure. Background Art

[0002] In the actual tunnel construction process, as the excavation goes deeper, the tunnel needs to be supported to ensure the overall stability of the tunnel. At the same time, the tunnel support is usually carried out by grouting the support formwork. After the support is completed, secondary anchoring and other work are carried out to achieve tunnel support.

[0003] However, as far as the existing split grouting tunnel top surface excavation pressure support structure is concerned, the support grouting process is outdated and cannot achieve one-time auxiliary pressure anchoring, which prolongs the construction time. At the same time, the integrity of the anchoring is poor, and double-layer grouting support cannot be achieved, which reduces the overall support effect. The formwork docking is not flexible and fast enough, and the demolding safety is also reduced. Summary of the Invention

[0004] In view of this, the present invention provides a split grouting type tunnel top surface excavation pressure support structure, which has a grouting anchoring part that can achieve one-time rapid overall anchoring, which can effectively improve the support effect while eliminating the need for subsequent installation of anchor rods. It is an integrated molding, thereby improving overall construction efficiency, ensuring construction quality, and optimizing construction process quality.

[0005] The present invention provides a purpose and function of a split grouting type tunnel top surface excavation pressure support structure, which specifically includes an installation support part; an installation upper mold part is attached to the installation support part; a limited installation part is fixedly connected to the installation support part; a row of grouting anchor parts are threadedly connected to the installation upper mold part; a row of top pressure driving parts are fixedly connected to the installation support part; a row of top pressure demoulding parts are slidably connected to the installation support part; two rotating adapter parts are fixedly connected to the bottom of the installation support part; a lifting drive part is rotatably connected to the rotating adapter part; the installation support part includes: an installation support lower mold, a lower leak-proof strip and a leak-proof plug-in strip, the lower installation support lower mold is fixedly connected to the lower leak-proof strip; the other side of the installation support lower mold is fixedly connected to the leak-proof plug-in strip.

[0006] Furthermore, the rotation adapter part includes: a rotation adapter ball sleeve seat, a disassembly and installation groove, a mounting ball and a rotation connecting column. The rotation adapter ball sleeve seat is fixedly connected to the mounting support lower mold; four disassembly and installation grooves are opened on the rotation adapter ball sleeve seat; the rotation adapter ball sleeve seat is equipped with a mounting ball; and the mounting ball is fixedly connected to the rotation connecting column.

[0007] Furthermore, the grouting anchoring part includes: an anchoring mounting tube, a mud pouring groove and a diffusion anchoring hole, the anchoring mounting tube is threadedly connected to the mounting upper mold; four mud pouring grooves are opened on the anchoring mounting tube; six rows of diffusion anchoring holes are opened on the anchoring mounting tube; and a hexagonal hole is provided at the bottom of the anchoring mounting tube.

[0008] Furthermore, the pressing driving part includes: a pressing mounting frame and a pressing bolt. The pressing mounting frame is fixedly connected to the mounting support lower die; and the pressing bolt is threadedly connected to the pressing mounting frame.

[0009] Furthermore, the installation support portion further comprises: a limiting thorn-shaped block, the limiting thorn-shaped block is fixedly connected to the leak-proof plug-in strip; and a threaded hole is formed on the limiting thorn-shaped block.

[0010] Furthermore, the lifting drive unit includes: a mounting threaded rod and a mounting support tube, the mounting threaded rod is threadedly connected to the mounting support tube, and a circle of through holes is provided at the bottom of the mounting support tube; the mounting threaded rod is rotatably connected to the rotating connecting column.

[0011] Furthermore, the demoulding pressing part includes: a demoulding pressing column and a return spring, the demoulding pressing column is slidably connected to the mounting support lower mold; the demoulding pressing column is sleeved with a return spring; the demoulding pressing column is aligned with the pressing bolt.

[0012] Furthermore, the mounting upper mold part includes: a mounting upper mold and a support frame, the bottom of the mounting upper mold is fixedly connected to two support frames; the two support frames are respectively fixedly connected to the mounting support lower mold; the mounting upper mold is fixedly connected to the mounting support lower mold; and a slot is provided on the mounting upper mold.

[0013] Furthermore, the limit mounting part includes: a limit mounting column, a sliding mounting frame and a limit inclined block, the limit mounting column is fixedly connected to the mounting support lower mold; the limit mounting column is slidably connected to the sliding mounting frame; the sliding mounting frame is fixedly connected to the limit inclined block; the limit inclined block is engaged with the limit thorn block.

[0014] Furthermore, the limit mounting part also includes: a limit tension spring and a positioning bolt. The limit tension spring is mounted on the limit mounting column, and the limit tension spring is connected between the sliding mounting frame and the mounting support lower mold; the positioning bolt is threadedly connected to the limit inclined block.

[0015] Beneficial effects

[0016] The support structure of the present invention can optimize the support process, realize one-time anchoring and forming, increase the structural strength, and at the same time be more conducive to improving the overall installation efficiency.

[0017] In addition, by adopting the set grouting anchor part, the tunnel support process can be effectively optimized, the tunnel support strength can be improved, and the structural integrity effect is stronger. The method of forming anchor rods by integrated grouting can improve work efficiency and shorten the construction period. There is no need to perform drilling and other operations to add anchor rods after the slurry solidifies. The anchor holes can be drilled in the tunnel before erection. By adopting the set top pressure demoulding parts, auxiliary top pressure demoulding work can be achieved, which is simpler to operate and can avoid the problem of inconvenient demoulding. At the same time, direct top pressure is used to avoid damage to the formed concrete surface, which is also safer and avoids violent demoulding methods such as cutting. During grouting, the slurry fills the space above the installation support lower mold, and the slurry is introduced into the diffusion anchor hole through the mud filling groove to diffuse outward to assist anchoring. At the same time, the top pressure demoulding column can be used to achieve auxiliary top pressure demoulding by rotating the top pressure bolt. The overall structure is simple, the operation difficulty is low, and the safety is stronger.

[0018] In addition, by adopting the set limiting installation part in conjunction with the set installation support part, rapid step-by-step assembly can be achieved, which can effectively ensure the installation and splicing efficiency, and at the same time ensure the connection stability, avoid leakage, and be more practical. The set installation upper mold part cooperates with the installation support part to achieve auxiliary double-layer installation, and the structure of the installation upper mold part itself can be used as structural reinforcement to enhance the strength of concrete. At the same time, the use of a double-layer structure is also more conducive to forming a cavity, which is convenient for injecting concrete slurry. The set positioning bolts can assist in further ensuring the stability of the structural connection, and sequentially docking the adjacent installation support parts. When the leak-proof plug-in strip is inserted into the lower leak-proof strip, the limiting spike block is engaged with the limiting inclined block. At this time, the limiting stability is maintained under the pull of the limiting tension spring, and the limiting spike block is docked with the positioning bolt for limiting to ensure structural stability. The spliced ​​double-layer structure is more flexible to use, light in weight, and easy to transport.

[0019] In addition, by adopting the setting of the lifting drive part in conjunction with the rotating adapter part, the support of the equipment can be made more flexible, the complexity of the tunnel support pole frame can be effectively reduced, and it is easier to disassemble, which enhances the flexibility of use and avoids the problem of the welding bracket being inconvenient to adjust. The lifting drive part can be used to adjust the height in real time, the rotating adapter part can be used to adjust the angle in real time, and the setting of the disassembly installation groove can make it easier to remove the installation ball, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0021] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached figure:

[0023] Figure 1It is a schematic diagram of the overall structure of the support structure of an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the top structure of the support structure of an embodiment of the present invention.

[0025] Figure 3 It is a cross-sectional view of the internal structure of the support structure of an embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the installation support portion of an embodiment of the present invention.

[0027] Figure 5 2 is a schematic structural diagram of an installation support portion according to an embodiment of the present invention.

[0028] Figure 6 It is a schematic structural diagram of the position limiting installation portion of an embodiment of the present invention.

[0029] Figure 7 It is a schematic diagram of the structure of the upper mold part of the embodiment of the present invention.

[0030] Figure 8 It is a schematic structural diagram of the grouting anchoring portion of an embodiment of the present invention.

[0031] Figure 9 2 is a schematic structural diagram of a top pressure driving portion according to an embodiment of the present invention.

[0032] Figure 10 2 is a schematic structural diagram of a lifting drive unit according to an embodiment of the present invention.

[0033] Figure 11 2 is a schematic structural diagram of a rotation adapter portion according to an embodiment of the present invention.

[0034] Reference Signs List

[0035] 1. Install the support part; 101. Install the lower mold; 102. Lower leakproof strip; 103. Leakproof plug-in strip; 104. Limiting thorn block; 2. Install the upper mold; 201. Install the upper mold; 202. Support frame; 3. Limiting installation part; 301. Limiting installation column; 302. Sliding installation frame; 3021. Limiting inclined plane block; 303. Limiting tension spring; 304. Positioning bolt; 4. Grouting anchor part; 401. Anchoring installation cylinder; 40 11. Mud pouring groove; 4012. Diffusion anchor hole; 5. Top pressure drive unit; 501. Top pressure mounting frame; 502. Top pressure bolt; 6. Top pressure demoulding member; 601. Demolding top pressure column; 602. Return spring; 7. Rotation adapter unit; 701. Rotation adapter ball sleeve; 702. Disassembly installation groove; 703. Installation ball; 704. Rotation connection column; 8. Lifting drive unit; 801. Installation threaded rod; 802. Installation support cylinder. DETAILED DESCRIPTION

[0036] In order to make the purpose, scheme and advantages of the technical solution of the present invention more clear, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the common meanings in the art. The same reference numerals in the drawings represent the same components.

[0037] Example: Please refer to Figures 1 to 11 As shown:

[0038] The present invention provides a split grouting type tunnel top surface excavation pressure support structure, comprising an installation support part 1; an installation upper mold part 2 is attached to the installation support part 1; a limited installation part 3 is fixedly connected to the installation support part 1; a row of grouting anchor parts 4 are threadedly connected to the installation upper mold part 2; a row of top pressure driving parts 5 are fixedly connected to the installation support part 1; a row of top pressure demoulding parts 6 are slidably connected to the installation support part 1; two rotating adapter parts 7 are fixedly connected to the bottom of the installation support part 1; a lifting drive part 8 is rotatably connected to the rotating adapter part 7; the installation support part 1 comprises: an installation support lower mold 101, a lower leak-proof strip 102 and a leak-proof plug-in strip 103, the lower leak-proof strip 102 is fixedly connected to the installation support lower mold 101; the leak-proof plug-in strip 103 is fixedly connected to the other side of the installation support lower mold 101.

[0039] Among them, the mounting support part 1 also includes: a limiting thorn block 104, a limiting thorn block 104 is fixedly connected to the leak-proof plug-in strip 103; a threaded hole is provided on the limiting thorn block 104; the mounting upper mold part 2 includes: an mounting upper mold 201 and a support frame 202, two support frames 202 are fixedly connected to the bottom of the mounting upper mold 201; the two support frames 202 are respectively fixedly connected to the mounting support lower mold 101; the mounting upper mold 201 is fixedly connected to the mounting support lower mold 101; a slot is provided on the mounting upper mold 201; the limiting mounting part 3 includes: a limiting The mounting post 301, the sliding mounting frame 302 and the limiting inclined plane block 3021, the limiting mounting post 301 is fixedly connected to the mounting support lower mold 101; the limiting mounting post 301 is slidably connected to the sliding mounting frame 302; the sliding mounting frame 302 is fixedly connected to the limiting inclined plane block 3021; ​​the limiting inclined plane block 3021 is engaged with the limiting thorn-shaped block 104; the limiting mounting part 3 also includes: a limiting tension spring 303 and a positioning bolt 304, the limiting mounting post 301 is fitted with a limiting tension spring 303, and the limiting tension spring 303 is connected to the sliding mounting The bracket 302 is connected to the lower mold 101 of the installation support; the positioning bolt 304 is threadedly connected to the limiting inclined surface block 3021; ​​by adopting the setting limiting installation part 3, cooperating with the setting installation support part 1, it is possible to achieve rapid step-by-step assembly, which can effectively ensure the installation efficiency of the splicing installation, and at the same time ensure the connection stability, avoid leakage, and be more practical. The setting upper mold part 2 is matched with the installation support part 1 to achieve auxiliary double-layer installation, and the structure of the upper mold part 2 itself can be used as structural reinforcement to enhance the strength of the concrete. At the same time, a double-layer structure is adopted. , and is more conducive to forming a cavity, which is convenient for injecting concrete slurry. The set positioning bolts 304 can help further ensure the stability of the structural connection, and sequentially connect the adjacent mounting support parts 1. When the leak-proof plug-in strip 103 is inserted into the lower leak-proof strip 102, the limiting thorn block 104 is engaged with the limiting inclined plane block 3021. At this time, the limiting tension spring 303 is pulled to maintain the limiting stability, and the positioning bolts 304 are connected to the limiting thorn block 104 for limiting, thereby ensuring the stability of the structure. The spliced ​​double-layer structure is more flexible to use, light in weight, and easy to transport.

[0040] The grouting anchoring part 4 includes: an anchoring installation tube 401, a grouting groove 4011 and a diffusion anchoring hole 4012. The anchoring installation tube 401 is threadedly connected to the installation mold 201; four grouting grooves 4011 are opened on the anchoring installation tube 401; six rows of diffusion anchoring holes 4012 are opened on the anchoring installation tube 401; a hexagonal hole is provided at the bottom of the anchoring installation tube 401; the top pressure driving part 5 includes: a top pressure mounting frame 501 and a top pressure Bolt 502, the top pressure mounting frame 501 is fixedly connected to the mounting support lower mold 101; the top pressure mounting frame 501 is threadedly connected with a top pressure bolt 502; the top pressure demoulding member 6 includes: a demoulding top pressure column 601 and a return spring 602, the demoulding top pressure column 601 is slidably connected to the mounting support lower mold 101; the demoulding top pressure column 601 is sleeved with a return spring 602; the demoulding top pressure column 601 is aligned with the top pressure bolt 502, and the demoulding top pressure column 601 is aligned with the top pressure bolt 502. The grouting anchoring part 4 can effectively optimize the tunnel support process, improve the tunnel support strength, and at the same time, the structural integrity effect is stronger. The method of forming anchor rods by integrated grouting can improve work efficiency and shorten the construction period. There is no need to perform drilling and other operations to add anchor rods after the slurry solidifies; by adopting the set top pressure demoulding parts 6, auxiliary top pressure demoulding work can be achieved, the operation is simpler, and the problem of inconvenient demoulding can be avoided. At the same time, the direct top pressure method is used to avoid damage to the formed concrete surface, which is also safer and avoids the use of violent demoulding methods such as cutting. During grouting, the slurry fills the space above the installation support lower mold 101, and the slurry is introduced into the diffusion anchor hole 4012 through the mud filling groove 4011 to diffuse outward to assist anchoring. At the same time, the top pressure demoulding column 601 can be used to achieve auxiliary top pressure demoulding by rotating the top pressure bolt 502. The overall structure is simple, the operation difficulty is low, and the safety is stronger.

[0041] Among them, the rotating adapter part 7 includes: a rotating adapter ball sleeve seat 701, a disassembly installation groove 702, a mounting ball 703 and a rotating connecting column 704. The rotating adapter ball sleeve seat 701 is fixedly connected to the mounting support lower mold 101; four disassembly installation grooves 702 are opened on the rotating adapter ball sleeve seat 701; a mounting ball 703 is sleeved on the rotating adapter ball sleeve seat 701; a rotating connecting column 704 is fixedly connected to the mounting ball 703; the lifting drive part 8 includes: a mounting threaded rod 801 and a mounting support cylinder 802, and the mounting threaded rod 801 is threadedly connected to the mounting support cylinder 802. And a circle of through holes is provided at the bottom of the mounting support cylinder 802; the mounting threaded rod 801 is rotatably connected to the rotating connecting column 704. By adopting the provided lifting drive unit 8 in conjunction with the rotating adapter unit 7, the support of the equipment can be made more flexible, which can effectively reduce the complexity of the tunnel support rod frame, and at the same time is more convenient for disassembly, enhances the flexibility of use, and avoids the problem that the welded bracket is inconvenient to adjust. The lifting drive unit 8 can be used to adjust the height in real time, the rotating adapter unit 7 can be used to adjust the angle in real time, and the disassembly mounting groove 702 can be used to make it easier to remove the mounting ball 703, which is more practical.

[0042] Specific usage and function of this embodiment: In the present invention, first, when erecting this structure, by inserting the leak-proof plug-in strip 103 into the lower leak-proof strip 102, the limiting spike block 104 is engaged with the limiting inclined plane block 3021. At this time, the limiting position is kept stable under the pull of the limiting tension spring 303, and the limiting spike block 104 is limited by the positioning bolt 304. The driving lifting and lowering adjustment can be achieved by rotating the installation threaded rod 801. The support angle can be adjusted by rotating the set rotating connecting column 704. The use of the disassembly installation groove 702 can make it easier to remove the installation ball 703. During grouting, the slurry fills the space above the installation support lower mold 101, and the slurry is introduced into the diffusion anchor hole 4012 through the mud filling groove 4011 to diffuse outward for auxiliary anchoring. At the same time, the demoulding can be achieved by rotating the top pressure bolt 502 to press the demoulding column 601 to achieve auxiliary top pressure demoulding, completing the overall use process.

[0043] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A split grouting type tunnel top surface excavation pressure support structure, characterized in that: The invention comprises an installation support part (1); an installation upper mold part (2) is attached to the installation support part (1); a limited position installation part (3) is fixedly connected to the installation support part (1); a row of grouting anchor parts (4) are threadedly connected to the installation upper mold part (2); a row of top pressure driving parts (5) are fixedly connected to the installation support part (1); a row of top pressure demoulding parts (6) are slidably connected to the installation support part (1); two rotating adapter parts (7) are fixedly connected to the bottom of the installation support part (1); a lifting drive part (8) is rotatably connected to the rotating adapter part (7); the installation support part (1) comprises: an installation support lower mold (101), a lower leak-proof strip (102) and a leak-proof plug-in strip (103); the installation support lower mold (101) is fixedly connected to the lower leak-proof strip (102); and the other side of the installation support lower mold (101) is fixedly connected to the leak-proof plug-in strip (103).

2. A split grouting type tunnel top surface excavation pressure support structure according to claim 1, characterized in that: The mounting support portion (1) further comprises a position-limiting thorn-shaped block (104), the position-limiting thorn-shaped block (104) being fixedly connected to the leak-proof plug-in strip (103); and a threaded hole is provided on the position-limiting thorn-shaped block (104).

3. The split grouting type tunnel top surface excavation pressure support structure according to claim 1, characterized in that: The mounting upper mold part (2) comprises: a mounting upper mold (201) and a support frame (202); the bottom of the mounting upper mold (201) is fixedly connected to two support frames (202); the two support frames (202) are respectively fixedly connected to the mounting support lower mold (101); the mounting upper mold (201) is fixedly connected to the mounting support lower mold (101); and slots are provided on the mounting upper mold (201).

4. A split grouting type tunnel top surface excavation pressure support structure according to claim 2, characterized in that: The position-limiting mounting portion (3) comprises: a position-limiting mounting column (301), a sliding mounting frame (302) and a position-limiting inclined surface block (3021); the position-limiting mounting column (301) is fixedly connected to the mounting support lower die (101); the sliding mounting frame (302) is slidably connected to the position-limiting mounting column (301); the sliding mounting frame (302) is fixedly connected to the position-limiting inclined surface block (3021); the position-limiting inclined surface block (3021) is engaged with the position-limiting thorn-shaped block (104).

5. A split grouting type tunnel top surface excavation pressure support structure according to claim 4, characterized in that: The position-limiting mounting portion (3) further comprises: a position-limiting tension spring (303) and a positioning bolt (304); the position-limiting tension spring (303) is sleeved on the position-limiting mounting column (301), and the position-limiting tension spring (303) is connected between the sliding mounting frame (302) and the mounting support lower die (101); and the positioning bolt (304) is threadedly connected to the position-limiting inclined plane block (3021).

6. A split grouting type tunnel top surface excavation pressure support structure according to claim 3, characterized in that: The grouting anchoring portion (4) comprises: an anchoring installation tube (401), a grouting groove (4011) and a diffusion anchoring hole (4012); the anchoring installation tube (401) is threadedly connected to the installation upper mold (201); four grouting grooves (4011) are provided on the anchoring installation tube (401); six rows of diffusion anchoring holes (4012) are provided on the anchoring installation tube (401); and a hexagonal hole is provided at the bottom of the anchoring installation tube (401).

7. The split grouting type tunnel top surface excavation pressure support structure according to claim 1, characterized in that: The top-pressing driving part (5) comprises: a top-pressing mounting frame (501) and a top-pressing bolt (502); the top-pressing mounting frame (501) is fixedly connected to the mounting support lower die (101); and the top-pressing bolt (502) is threadedly connected to the top-pressing mounting frame (501).

8. A split grouting type tunnel top surface excavation pressure support structure according to claim 7, characterized in that: The demoulding pressing member (6) comprises: a demoulding pressing column (601) and a return spring (602); the demoulding pressing column (601) is slidably connected to the mounting support lower mold (101); the return spring (602) is sleeved on the demoulding pressing column (601); the demoulding pressing column (601) is aligned with the pressing bolt (502).

9. The split grouting type tunnel top surface excavation pressure support structure according to claim 1, characterized in that: The rotation adapting portion (7) comprises: a rotation adapting ball socket (701), a disassembly installation groove (702), an installation ball (703) and a rotation connecting column (704); the rotation adapting ball socket (701) is fixedly connected to the installation support lower mold (101); four disassembly installation grooves (702) are formed on the rotation adapting ball socket (701); the installation ball (703) is sleeved on the rotation adapting ball socket (701); and the rotation connecting column (704) is fixedly connected to the installation ball (703).

10. A split grouting type tunnel top surface excavation pressure support structure according to claim 9, characterized in that: The lifting drive unit (8) comprises: a mounting threaded rod (801) and a mounting support cylinder (802); the mounting threaded rod (801) is threadedly connected to the mounting support cylinder (802), and a circle of through holes is provided at the bottom of the mounting support cylinder (802); the mounting threaded rod (801) is rotatably connected to the rotating connection column (704).

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