Tunnel supporting system suitable for soft broken surrounding rock

Abstract

The invention relates to the technical field of tunnel supporting, and discloses a tunnel supporting system suitable for soft and broken surrounding rocks.The tunnel supporting system comprises a movable base, the movable base moves in a tunnel, the top end of the movable base is fixedly connected with two containing frames, the two containing frames are arranged in parallel, a gap is formed between the two containing frames, and telescopic pieces are arranged on the containing frames; the supporting assembly comprises a plurality of supporting plates, the supporting plates are spliced into a reinforcing plate through a plurality of connecting pieces, the reinforcing plate is placed on the two placing frames, and a gap is formed between the reinforcing plate and the broken surrounding rock layer; and the anchoring assembly comprises a supporting frame, a driving piece and an anchoring piece, the supporting frame is rotationally connected with the movable base through the driving piece, the anchoring piece is arranged on the supporting frame and located in the gap between the two containing frames, a plurality of anchoring rods are stored in the anchoring piece, and the anchoring piece is used for installing the anchoring rods on the reinforcing plate. The device is simple in structure and convenient to operate, and efficient and rapid construction of the whole supporting structure and safety and stability of the whole supporting structure are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support, and in particular to a tunnel support system suitable for soft and broken surrounding rocks. Background Art

[0002] Tunnel support refers to a permanent support structure built with reinforced concrete and other materials along the perimeter of the tunnel to prevent deformation or collapse of the surrounding rock. Tunnel support technology is usually used in tunnel projects and water conservancy channels. Tunnel support is simply the lining. The most common one is the block tunnel support, which can be prestressed high-pressure grouting plain concrete tunnel support.

[0003] The existing tunnel support system for initial tunnel support usually includes an initial support concrete layer, anchor rods and steel frames arranged in sequence along the inner wall section of the excavated tunnel. The sprayed concrete layer is inconvenient to carry over a large area and is unevenly stressed during the tunnel support process, which leads to certain inconveniences in the support project. During tunnel support, the tunnel is usually supported by manually building a steel frame on site, and in subsequent construction, the inner wall of the excavated tunnel is manually measured, and then holes are drilled and anchor rods are installed in the holes. The entire process is manually operated, the overall support structure is complex, the work efficiency is low, and the labor cost is high.

[0004] Therefore, there is an urgent need for a tunnel support system suitable for soft and broken surrounding rock to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a tunnel support system suitable for soft and broken surrounding rock to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a tunnel support system suitable for soft and broken surrounding rock, comprising:

[0007] A mobile base, the mobile base moves in the tunnel, two placement racks are fixedly connected to the top of the mobile base, the two placement racks are arranged in parallel with a gap between them, and telescopic parts are arranged on the placement racks;

[0008] A support assembly, comprising a plurality of support plates, wherein the plurality of support plates are spliced ​​into a reinforcement plate through a plurality of connectors, and the reinforcement plate is placed on the two placement racks, and a gap is provided between the reinforcement plate and the broken surrounding rock layer;

[0009] The anchoring assembly includes a support frame, a driving member and an anchoring member. The support frame is rotatably connected to the mobile base through the driving member. The anchoring member is arranged on the support frame and is located in the gap between the two placement frames. A plurality of anchoring rods are stored in the anchoring member. The anchoring member is used to install the plurality of anchoring rods on the reinforcement plate.

[0010] According to a tunnel support system suitable for soft and broken surrounding rock provided by the present invention, the connecting part includes a mounting plate fixedly connected to one side of the support plate, and a mounting groove is provided on the other side of the support plate. The mounting plates and the mounting grooves on two adjacent support plates are adapted to each other, and channels are provided at both ends of the mounting plates, and a limiting rod is slidably connected in the channel. Limiting grooves are provided on the opposite side walls in the mounting groove, and the limiting rod is adapted to the limiting grooves. Threaded holes are provided on the support plate and the mounting groove, and bolts are threadedly connected in the threaded holes.

[0011] According to a tunnel support system suitable for soft and broken surrounding rock provided by the present invention, a top block is fixedly connected to the bolt, one end of the limit rod extends into the threaded hole and is arranged in contact with the top block, a spring is sleeved on the limit rod, and both ends of the spring are respectively fixedly connected to the channel and the limit rod.

[0012] According to a tunnel support system suitable for soft and broken surrounding rock provided by the present invention, the anchoring member includes two first hydraulic cylinders fixedly connected to the support frame, the telescopic end of one of the first hydraulic cylinders is equipped with a drill bit through a motor, a through hole is opened on the support plate, the drill bit is adapted to the through hole, a conveying channel is arranged on the support frame, the other first hydraulic cylinder is fixedly connected in the conveying channel, a storage box is fixedly connected to the support frame, a conveying member is arranged in the storage box, a plurality of the anchoring rods are conveyed into the conveying channel through the conveying member and contact the telescopic end of the first hydraulic cylinder.

[0013] According to a tunnel support system suitable for soft and broken surrounding rock provided by the present invention, the conveying member includes two conveyor belts installed in the storage box, a plurality of baffles are fixedly connected to the conveyor belts at equal intervals along the circumferential direction, and the anchor rod is located between two adjacent conveyor belts.

[0014] According to a tunnel support system suitable for soft and broken surrounding rock provided by the present invention, the driving member includes a second hydraulic cylinder fixedly connected to the mobile base, the telescopic end of the second hydraulic cylinder is fixedly connected to a tooth plate, the middle part of the top of the mobile base is fixedly connected to a support frame, one end of the placement frame is rotatably connected to the support frame and fixedly connected to a gear, and the gear is meshed with the tooth plate.

[0015] According to a tunnel support system suitable for soft and broken surrounding rocks provided by the present invention, both ends of the placement frame are provided with receiving grooves, and the telescopic member includes a telescopic plate slidably connected in the receiving grooves.

[0016] According to a tunnel support system suitable for soft and broken surrounding rocks provided by the present invention, both sides of the bottom end of the support plate are provided with slots, and the slots are adapted to the placement frame and the telescopic plate.

[0017] According to a tunnel support system suitable for soft and broken surrounding rocks provided by the present invention, the placement frame, the support plate and the telescopic plate are all arc-shaped structures.

[0018] According to a tunnel support system suitable for soft and broken surrounding rock provided by the present invention, an initial support concrete layer is arranged in the gap.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] The present invention provides a tunnel support system suitable for soft and broken surrounding rocks. The device moves in the tunnel. The size of the placement frame is adjusted by the telescopic member according to the size of the tunnel. A plurality of support plates are selected and spliced ​​according to the size of the tunnel to form a reinforcement plate. The plurality of support plates are connected by the connecting member to achieve convenient assembly and ensure stability after assembly. The reinforcement plate is placed on the placement frame and arranged in the tunnel, and the anchor rod is installed by the anchoring piece. During the installation process, the installation direction of the anchor rod is adjusted by the driving piece to achieve the installation of the anchor rod on the top surface of the entire tunnel, thereby ensuring installation efficiency. The present application has a simple structure and convenient operation, and ensures efficient and fast construction of the overall support structure, as well as safety and stability of the overall support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0022] Figure 1 This is a schematic diagram of the distribution of support plates in the tunnel of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the connecting piece of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the storage box of the present invention;

[0026] Among them, 1. Mobile base; 2. Placement frame; 3. Support plate; 4. Broken surrounding rock layer; 5. Support frame; 6. Anchor rod; 7. Mounting plate; 8. Mounting groove; 9. Channel; 10. Limit rod; 11. Limit groove; 12. Bolt; 13. Top block; 14. Spring; 15. First hydraulic cylinder; 16. Motor; 17. Drill bit; 18. Through hole; 19. Storage box; 20. Conveying channel; 21. Conveyor belt; 22. Baffle; 23. Second hydraulic cylinder; 24. Tooth plate; 25. Support frame; 26. Gear; 27. Storage groove; 28. Telescopic plate; 29. ​​Slot; 30. Initial support concrete layer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figure 1-Figure 4 The present invention provides a tunnel support system suitable for soft and broken surrounding rock, comprising:

[0030] A mobile base 1 moves in the tunnel, and two placement racks 2 are fixedly connected to the top of the mobile base 1. The two placement racks 2 are arranged in parallel with a gap between them, and a telescopic member is arranged on the placement racks 2;

[0031] The support assembly includes a plurality of support plates 3, wherein the plurality of support plates 3 are spliced ​​into a reinforcement plate through a plurality of connectors, and the reinforcement plate is placed on two placement frames 2, and a gap is provided between the reinforcement plate and the broken surrounding rock layer 4;

[0032] The anchoring assembly includes a support frame 5, a driving member and an anchoring member. The support frame 5 is rotatably connected to the mobile base 1 through the driving member. The anchoring member is arranged on the support frame 5 and is located in the gap between the two placement frames 2. A plurality of anchoring rods 6 are stored in the anchoring member, and the anchoring member is used to install the plurality of anchoring rods 6 on the reinforcement plate.

[0033] As an optional embodiment, the connecting part includes a mounting plate 7 fixedly connected to one side of the support plate 3, and a mounting groove 8 is opened on the other side of the support plate 3. The mounting plates 7 and the mounting grooves 8 on the two adjacent support plates 3 are adapted to each other. Channels 9 are opened at both ends of the mounting plate 7, and a limiting rod 10 is slidably connected in the channel 9. Limiting grooves 11 are opened on the opposite side walls of the mounting groove 8, and the limiting rod 10 is adapted to the limiting groove 11. Threaded holes are opened on the support plate 3 and the mounting groove 8, and bolts 12 are threadedly connected in the threaded holes.

[0034] In one embodiment of the present invention, referring to Figure 3 , several support plates 3 are spliced ​​together and selected according to actual needs. The mounting plates 7 and mounting grooves 8 on two adjacent support plates 3 are connected. After connection, the limiting rod 10 extends into the limiting groove 11 to further ensure the stability of the connection. After installation, the bolts 12 are screwed in, thereby realizing convenient assembly of several support plates 7 and stability after assembly.

[0035] As an optional embodiment, a top block 13 is fixedly connected to the bolt 12, one end of the limiting rod 10 extends into the threaded hole and is in contact with the top block 13, a spring 14 is sleeved on the limiting rod 10, and both ends of the spring 14 are fixedly connected to the channel 9 and the limiting rod 10 respectively.

[0036] In one embodiment of the present invention, referring to Figure 3 The spring 14 is provided to ensure the reset of the limit rod 10 , and the top block 13 is provided to squeeze the two limit rods 10 into the limit groove 11 , so that the installation of the limit rod 10 and the limit groove 11 is realized.

[0037] As an optional embodiment, the anchor includes two first hydraulic cylinders 15 fixedly connected to the support frame 5, wherein the telescopic end of one of the first hydraulic cylinders 15 is equipped with a drill bit 17 through a motor 16, a through hole 18 is opened on the support plate 3, and the drill bit 17 is adapted to the through hole 18, a conveying channel 20 is provided on the support frame 5, and the other first hydraulic cylinder 15 is fixedly connected in the conveying channel 20, a storage box 19 is fixedly connected to the support frame 5, and a conveying member is provided in the storage box 19, and a plurality of anchor rods 6 are conveyed to the conveying channel 20 through the conveying member and contact the telescopic end of the first hydraulic cylinder 15.

[0038] In one embodiment of the present invention, referring to Figure 1 The first hydraulic cylinder 15 drives the drill bit 17 to penetrate the support plate 3 to drill a hole in the tunnel. After the drilling is completed, the drill bit 17 is reset. After the reset, the anchor rod 6 is driven by another hydraulic cylinder 15 to extend into the drill hole to install the anchor rod 6.

[0039] As an optional embodiment, the conveying member includes two conveyor belts 21 installed in the storage box 19 , a plurality of baffles 22 are fixedly connected to the conveyor belts 21 at equal intervals along the circumferential direction, and the anchor rod 6 is located between two adjacent conveyor belts 21 .

[0040] In one embodiment of the present invention, referring to Figure 4 By setting the conveyor belt 21 to rotate, a number of baffles 22 are driven to move. The baffles 22 on the two conveyor belts 21 are set correspondingly to form a blocking space for conveying the anchor rod 6 into the conveying channel 20. Subsequently, the first hydraulic cylinder 15 is set to push it into the drill hole to achieve the installation of the anchor rod 6.

[0041] As an optional embodiment, the driving member includes a second hydraulic cylinder 23 fixedly connected to the mobile base 1, the telescopic end of the second hydraulic cylinder 23 is fixedly connected to a toothed plate 24, the middle part of the top of the mobile base 1 is fixedly connected to a support frame 25, one end of the support frame 5 is rotatably connected to the support frame 25 and is fixedly connected to a gear 26, and the gear 26 is meshed with the toothed plate 24.

[0042] In one embodiment of the present invention, referring to Figure 1 The tooth plate 24 is driven to slide horizontally by the second hydraulic cylinder 23. When the tooth plate 24 slides horizontally, the meshing gear 26 is driven to rotate. When the gear 26 rotates, the support frame 5 is driven to rotate, thereby realizing the correspondence between the drill bit 17, the anchor rod 6 and the anchor position, and then drilling and installing the anchor rod 6 are carried out at the top of the tunnel.

[0043] As an optional implementation, both ends of the placement rack 2 are provided with storage grooves 27 , and the telescopic member includes a telescopic plate 28 slidably connected in the storage grooves 27 .

[0044] In one embodiment of the present invention, referring to Figure 1 In the initial state, the retractable plate 28 is located in the receiving groove 27 of the placement rack 2. When the device moves to a suitable position in the tunnel, the retractable plate 28 is slid out of the receiving groove 27 to adjust the length of the entire placement rack 2 so that it can adapt to tunnels of different sizes.

[0045] As an optional implementation, both sides of the bottom end of the supporting plate 3 are provided with card slots 29 , and the card slots 29 are adapted to the placement rack 2 and the telescopic plate 28 .

[0046] In one embodiment of the present invention, referring to Figure 3 Both sides of the bottom end of the support plate 3 are provided with card slots 29, and the card slots 29 are used to place the support plate 3 on the two placement frames 2, so as to facilitate the stable installation of the entire support structure in the tunnel.

[0047] As an optional implementation, the placement rack 2, the support plate 3 and the telescopic plate 28 are all arc-shaped structures.

[0048] In one embodiment of the present invention, referring to Figure 1 The placement frame 2, the supporting plate 3 and the telescopic plate 28 are all arc-shaped structures to adapt to the arc-shaped tunnel.

[0049] As an optional implementation, an initial support concrete layer 30 is provided in the gap.

[0050] In one embodiment of the present invention, referring to Figure 1 , concrete is poured into the gap to form an initial support concrete layer 30, further improving the support effect.

[0051] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A tunnel support system suitable for soft and broken surrounding rock, characterized in that: include: A mobile base (1), the mobile base (1) moves in the tunnel, two placement racks (2) are fixedly connected to the top of the mobile base (1), the two placement racks (2) are arranged in parallel with a gap between them, and a telescopic member is arranged on the placement rack (2); A support assembly, comprising a plurality of support plates (3), wherein the plurality of support plates (3) are spliced ​​into a reinforcement plate through a plurality of connectors, and the reinforcement plate is placed on the two placement frames (2) and a gap is provided between the reinforcement plate and the broken surrounding rock layer (4); An anchoring assembly comprises a support frame (5), a driving member and an anchoring member, wherein the support frame (5) is rotatably connected to the mobile base (1) via the driving member, the anchoring member is arranged on the support frame (5) and is located in the gap between the two placement frames (2), a plurality of anchoring rods (6) are stored in the anchoring member, and the anchoring member is used to mount the plurality of anchoring rods (6) on the reinforcement plate.

2. A tunnel support system suitable for soft and broken surrounding rock according to claim 1, characterized in that: The connecting member comprises a mounting plate (7) fixedly connected to one side of the supporting plate (3); a mounting groove (8) is provided on the other side of the supporting plate (3); the mounting plates (7) and the mounting grooves (8) on two adjacent supporting plates (3) are adapted to each other; channels (9) are provided at both ends of the mounting plate (7); a limiting rod (10) is slidably connected in the channel (9); limiting grooves (11) are provided on opposite side walls in the mounting groove (8); the limiting rod (10) is adapted to the limiting groove (11); threaded holes are provided on the supporting plate (3) and the mounting groove (8); bolts (12) are threadedly connected in the threaded holes.

3. A tunnel support system suitable for soft and broken surrounding rock according to claim 2, characterized in that: A top block (13) is fixedly connected to the bolt (12), one end of the limit rod (10) extends into the threaded hole and is in contact with the top block (13), a spring (14) is sleeved on the limit rod (10), and two ends of the spring (14) are respectively fixedly connected to the channel (9) and the limit rod (10).

4. A tunnel support system suitable for soft and broken surrounding rock according to claim 2, characterized in that: The anchoring member comprises two first hydraulic cylinders (15) fixedly connected to the support frame (5), wherein the telescopic end of one of the first hydraulic cylinders (15) is equipped with a drill bit (17) via a motor (16), a through hole (18) is provided on the support plate (3), and the drill bit (17) is matched with the through hole (18), a conveying channel (20) is provided on the support frame (5), and the other first hydraulic cylinder (15) is fixedly connected in the conveying channel (20), a storage box (19) is fixedly connected to the support frame (5), and a conveying member is provided in the storage box (19), and a plurality of the anchoring rods (6) are conveyed into the conveying channel (20) through the conveying member and contact the telescopic end of the first hydraulic cylinder (15).

5. A tunnel support system suitable for soft and broken surrounding rock according to claim 4, characterized in that: The conveying member comprises two conveying belts (21) installed in the storage box (19), a plurality of baffles (22) are fixedly connected to the conveying belts (21) at equal intervals along the circumferential direction, and the anchor rod (6) is located between two adjacent conveying belts (21).

6. A tunnel support system suitable for soft and broken surrounding rock according to claim 5, characterized in that: The driving member comprises a second hydraulic cylinder (23) fixedly connected to the mobile base (1); the telescopic end of the second hydraulic cylinder (23) is fixedly connected to a toothed plate (24); the middle of the top end of the mobile base (1) is fixedly connected to a support frame (25); one end of the placement frame (2) is rotatably connected to the support frame (25) and is fixedly connected to a gear (26); the gear (26) is meshed with the toothed plate (24).

7. The tunnel support system suitable for soft and broken surrounding rock according to claim 1, characterized in that: Both ends of the placement rack (2) are provided with storage grooves (27), and the telescopic member comprises a telescopic plate (28) slidably connected in the storage grooves (27).

8. A tunnel support system suitable for soft and broken surrounding rock according to claim 7, characterized in that: Both sides of the bottom end of the support plate (3) are provided with card slots (29), and the card slots (29) are compatible with the placement rack (2) and the telescopic plate (28).

9. A tunnel support system suitable for soft and broken surrounding rock according to claim 8, characterized in that: The placement rack (2), the support plate (3) and the telescopic plate (28) are all arc-shaped structures.

10. The tunnel support system suitable for soft and broken surrounding rock according to claim 1, characterized in that: An initial supporting concrete layer (30) is arranged in the gap.

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