Mountain tunnel reinforcing device

Abstract

The utility model discloses a mountain tunnel reinforcing device which comprises an arch-shaped frame which is arranged on the inner wall of a mountain tunnel, fixedly connected with the mountain tunnel through bolts and used for supporting the mountain tunnel, and through holes used for injecting slurry are formed in the axial surfaces of the bolts. And a plurality of injection molding holes for enabling slurry to flow between the mountain tunnel and the arched frame are formed in the radial surface of the bolt. By the adoption of the mountain tunnel reinforcing device, the structure of the reinforcing device is simplified while the mountain tunnel is reinforced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel engineering, and particularly relates to a mountain tunnel reinforcement device. Background Art

[0002] At present, people build tunnels on the ground or underground to utilize the ground or underground space. The tunnels can be mountain tunnels (i.e., tunnels excavated from the mountain on the road surface), traffic tunnels (e.g., subway tunnels), or water conservancy project tunnels (e.g., water conveyance tunnels), etc.

[0003] When the entrance of a mountain tunnel is located on a hillside with asymmetric terrain or unstable geological strata, when the soil layer thickness on both sides of the top of the mountain tunnel is inconsistent, the pressure exerted by the soil layer on the mountain tunnel is different. That is, the pressures borne on both sides of the top of the mountain tunnel are different, and the side with more force is the bias pressure side. Usually, the above tunnel is called a bias pressure mountain tunnel (abbreviated as a bias pressure tunnel).

[0004] In the prior art, the utility model patent with the authorization announcement number CN211900636U discloses a "Civil Engineering Tunnel Reinforcement Equipment". In the above patent, the reinforcement of the mountain tunnel is achieved by filling liquid concrete between the external steel structure fixing frame and the internal shaped stones (i.e., the mountain tunnel). The specific process of filling liquid concrete is as follows: First, the liquid concrete in the box is extracted by a slurry pump and a water suction pipe, then the liquid concrete is transferred to the transmission pipeline through a drain pipe, a movable connecting pipe, and a fixed connecting pipe, and finally the transmission pipeline transfers the liquid concrete into the cracks inside the mountain. The liquid concrete solidifies in the cracks to form a concrete protective layer.

[0005] That is to say, injecting liquid concrete into the gap between the steel structure fixing frame and the shaped stones can achieve the reinforcement of the mountain tunnel.

[0006] However, in the above process, first, it is necessary to place the steel structure fixing frame first, then place the shaped stones, and finally inject liquid concrete between the two. Second, a series of grouting equipment is required to cooperate to achieve the injection of liquid concrete.

[0007] That is, in the prior art, the equipment required for the reinforcement of mountain tunnels is numerous and the connection relationship is complex (for example, a series of grouting equipment is required to reinforce the mountain tunnel).

[0008] Therefore, there is an urgent need for a mountain tunnel reinforcement device with a simple structure. Utility Model Content

[0009] To solve the above technical problems, the utility model provides a mountain tunnel reinforcement device, which simplifies the structure of the reinforcement device while realizing the reinforcement of the mountain tunnel.

[0010] The utility model provides a reinforcement device for a mountain tunnel, which includes an arch frame for supporting the mountain tunnel, the arch frame is fixedly connected to the inner wall of the mountain tunnel by bolts, through holes for injecting slurry are formed on the axial surface of the bolts, and a plurality of injection holes for allowing the slurry to flow between the mountain tunnel and the arch frame are formed on the radial surface of the bolts.

[0011] The above-mentioned reinforcement device for a mountain tunnel is characterized in that: it further includes a bottom plate fixedly connected to the bottom of the arch frame for supporting the arch frame.

[0012] The above-mentioned reinforcement device for a mountain tunnel is characterized in that: it further includes a reinforcement layer cast around the bottom plate and fixedly connected to the bottom plate for reinforcing the arch frame.

[0013] The above-mentioned reinforcement device for a mountain tunnel is characterized in that: it further includes a first buffer layer laid at the bottom of the reinforcement layer for buffering the pressure exerted by the mountain tunnel reinforcement device on the underlying formation, and a second buffer layer laid at the bottom of the first buffer layer for buffering the pressure exerted by the mountain tunnel reinforcement device on the underlying formation.

[0014] The above-mentioned reinforcement device for a mountain tunnel is characterized in that: it further includes a support mechanism arranged on the inner wall of the arch frame, the support mechanism includes a support rod arranged on the inner wall of the arch frame, a pair of limiting rods longitudinally and symmetrically arranged on the inner wall of the support rod and fixedly connected to the support rod for enhancing the anti-deformation ability of the support rod, and a reinforcement rod arranged between the pair of limiting rods and fixedly connected to the limiting rods for enhancing the stability of the limiting rods.

[0015] The beneficial effects are deduced as follows:

[0016] In the prior art, firstly, it is necessary to place a steel structure fixing frame first, then place shaped stones, and finally inject liquid concrete between the above two. Secondly, a series of grouting equipment is required to cooperate to achieve the injection of liquid concrete.

[0017] That is to say, in the prior art, a large number of equipment and complex connection relationships are required for the reinforcement of mountain tunnels (for example, a series of grouting equipment is required to reinforce mountain tunnels).

[0018] In the technical solution of the present utility model, the arch frame is placed first, then the arch frame and the mountain tunnel are fixedly connected by bolts, and finally, slurry is injected into the gap between the arch frame and the mountain tunnel through the through holes and injection holes formed on the surface of the bolts to achieve the reinforcement of the mountain tunnel.

[0019] It is precisely because bolts are provided between the mountain tunnel and the arch frame that not only the fixation of the arch frame is achieved (i.e., the reinforcement of the mountain tunnel is realized), but also grouting between the mountain tunnel and the arch frame is realized (i.e., the mountain tunnel is further reinforced).

[0020] That is to say, the double reinforcement of the mountain tunnel can be achieved only through bolts, avoiding the situation in the prior art where a large number of devices are required for the reinforcement of the mountain tunnel and the connection relationship is complex.

[0021] Therefore, by adopting a mountain tunnel reinforcement device in the present utility model, while realizing the reinforcement of the mountain tunnel, the structure of the reinforcement device is simplified. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a mountain tunnel reinforcement device provided by the present utility model;

[0023] Figure 2 is Figure 1 a schematic structural diagram of the arch frame with bolts and a bottom plate installed in

[0024] Figure 3 is Figure 2 a schematic structural diagram of the bolt in

[0025] Figure 4 is Figure 1 a schematic structural diagram of the support mechanism in

[0026] Figure 5 is Figure 1 a schematic structural diagram of the reinforcement layer, the first buffer layer, and the second buffer layer poured around the bottom plate in

[0027] Description of the Reference Numerals in the Drawings:

[0028] Bolt 1; Arch frame 2; Through hole 11; Injection hole 12;

[0029] Bottom plate 3; Reinforcement layer 4; First buffer layer 5; Second buffer layer 6;

[0030] Support rod 7; Limit rod 8; Reinforcement rod 9. Detailed Description of the Specific Embodiment

[0031] The present utility model will be further described in detail below in conjunction with the embodiments and the drawings. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model and do not limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description.

[0032] It should be noted that, without conflict, the embodiments and the features of the embodiments in the present utility model can be combined with each other. The present utility model will be described in detail below with reference to the embodiments and in conjunction with the accompanying drawings.

[0033] In the prior art, first, it is necessary to place the steel structure fixing frame first, then place the shaped stones, and finally inject liquid concrete between the above two. Secondly, a series of grouting equipment is required to cooperate to achieve the injection of liquid concrete.

[0034] That is to say, in the prior art, a large number of equipment are required for the reinforcement of mountain tunnels and the connection relationship is complex.

[0035] Based on this, the present utility model provides a mountain tunnel reinforcement device, which simplifies the structure of the reinforcement device while realizing the reinforcement of the mountain tunnel.

[0036] Figure 1 FIG. is a schematic structural diagram of a mountain tunnel reinforcement device provided by the present utility model. Figure 2 is Figure 1 a schematic structural diagram of an arch frame with bolts and a bottom plate installed therein. Figure 3 is Figure 2 a schematic structural diagram of the bolt in Figure 4 is Figure 1 a schematic structural diagram of the support mechanism in Figure 5 is Figure 1 a schematic structural diagram of a reinforcement layer, a first buffer layer, and a second buffer layer poured around the bottom plate.

[0037] See Figure 1 , a mountain tunnel reinforcement device provided by the present utility model includes an arch frame 2 for supporting the mountain tunnel, which is fixedly connected to the inner wall of the mountain tunnel and the mountain tunnel through a bolt 1. A through hole 11 for injecting slurry is opened on the axial surface of the bolt 1, and a plurality of injection holes 12 for allowing the slurry to flow into the gap between the mountain tunnel and the arch frame 2 are opened on the radial surface of the bolt 1.

[0038] The injection holes 12 can be specifically set according to the actual situation. Exemplarily, the number of injection holes 12 can be two.

[0039] In a specific implementation, when a mountain tunnel is formed after lining segments in the mountain, an arch frame 2 is placed in the mountain tunnel. Further, the mountain tunnel and the arch frame 2 are fixedly connected through the bolt 1. Further, slurry is injected into the bolt 1 through the through hole 11 opened on the axial surface of the bolt 1, and the slurry flows into the gap between the mountain tunnel and the arch frame 2 through the injection holes 12 opened on the radial surface of the bolt 1. When the slurry solidifies, the reinforcement of the mountain tunnel is realized.

[0040] The beneficial effects are deduced as follows:

[0041] In the prior art, first, a steel structure fixing frame needs to be placed, then a shaped stone block is placed, and finally, liquid concrete is injected between the two. Second, a series of grouting equipment is required to cooperate to achieve the injection of liquid concrete.

[0042] That is to say, in the prior art, a large number of equipment are required for the reinforcement of mountain tunnels and the connection relationships are complex (for example, a series of grouting equipment is required to reinforce mountain tunnels).

[0043] In the technical solution of the present utility model, first, the arch frame 2 is placed, then the arch frame 2 and the mountain tunnel are fixedly connected by bolts 1, and finally, slurry is injected into the gap between the arch frame 2 and the mountain tunnel through the through holes 11 and injection holes 12 formed on the surface of the bolts 1 to achieve the reinforcement of the mountain tunnel.

[0044] Precisely because the bolts 1 are provided between the mountain tunnel and the arch frame 2, the fixation of the arch frame 2 is achieved (i.e., the reinforcement of the mountain tunnel is achieved), and the grouting between the mountain tunnel and the arch frame 2 is also achieved (i.e., the mountain tunnel is further reinforced).

[0045] That is to say, only through the bolts 1 can the double reinforcement of the mountain tunnel be achieved, avoiding the situation in the prior art where a large number of equipment are required for the reinforcement of the mountain tunnel and the connection relationships are complex.

[0046] Therefore, by adopting a mountain tunnel reinforcement device in the present utility model, while achieving the reinforcement of the mountain tunnel, the structure of the reinforcement device is simplified.

[0047] In the embodiment described above, a mountain tunnel reinforcement device is introduced. In another embodiment of the present utility model, a reinforcement component of the arch frame 2 is introduced.

[0048] See Figure 2 , and it further includes a bottom plate 3 fixedly connected to the bottom of the arch frame 2 and used for supporting the arch frame 2.

[0049] It can be understood that the arch frame 2 connected with the bottom plate 3 can be more stable, that is, it can better support the mountain tunnel.

[0050] In specific implementation, after the arch frame 2 and the bottom plate 3 are fixedly connected, they can be fixedly connected to the mountain tunnel through the bolts 1.

[0051] In the embodiment described above, a reinforcement component of the arch frame 2 is introduced. In another embodiment of the present utility model, another reinforcement component of the arch frame 2 is introduced.

[0052] See Figure 5 , and it further includes a reinforcement layer 4 fixedly connected to the periphery of the bottom plate 3 and used for reinforcing the arch frame 2.

[0053] In a specific implementation, when the arch frame 2 and the bottom plate 3 are fixedly connected, the reinforcement layer 4 can be first poured around the bottom plate 3 to reinforce the arch frame 2. Exemplarily, the material of the reinforcement layer 4 can be concrete. Then, the arch frame 2 is fixedly connected to the mountain tunnel through the bolt 1.

[0054] In the foregoing embodiments, another reinforcement component of the arch frame 2 was introduced. In another embodiment of the present invention, a protective layer for preventing the mountain tunnel reinforcement device from causing the soft underground formation to subside was introduced.

[0055] Continue to refer to Figure 5 , and further includes a first buffer layer 5 laid at the bottom of the reinforcement layer 4 for buffering the pressure exerted by the mountain tunnel reinforcement device on the underlying formation, and a second buffer layer 6 laid at the bottom of the first buffer layer 5 for buffering the pressure exerted by the mountain tunnel reinforcement device on the underlying formation.

[0056] Among them, the first buffer layer 5 and the second buffer layer 6 can buffer the pressure exerted by the mountain tunnel reinforcement device thereon, avoiding the situation that the soft underground formation subsides due to the pressure of the mountain reinforcement device. Exemplarily, the material of the first buffer layer 5 can be crushed stones, and the material of the second buffer layer can be fine sand.

[0057] In a specific implementation, first, the second buffer layer 6 and the first buffer layer 5 can be laid on the bottom of the mountain tunnel from bottom to top in sequence. Second, the arch frame 2 equipped with the bottom plate 3 is placed into the mountain tunnel 1. Third, concrete is poured around the bottom plate 3 to form the reinforcement layer 4 of the arch frame 2. Finally, the mountain tunnel and the arch frame 2 are fixedly connected through the bolt 1, and slurry is injected between the mountain tunnel and the arch frame 2 through the through hole 11 and the injection hole 12 of the bolt to achieve the reinforcement of the mountain tunnel.

[0058] In the foregoing embodiments, a protective layer for preventing the mountain tunnel reinforcement device from causing the soft underground formation to subside was introduced. In another embodiment of the present invention, an installation method of a mountain tunnel reinforcement device is introduced, and the method includes the following steps:

[0059] Step 1: Lay sand.

[0060] The specific process is: the second buffer layer 6 and the first buffer layer 5 are laid on the bottom of the mountain tunnel from bottom to top in sequence.

[0061] Step 2: Place the plate (place the arch frame 2 equipped with the bottom plate 3 in the mountain tunnel).

[0062] The specific process is: the arch frame 2 equipped (i.e., fixedly connected) with the bottom plate 3 is placed into the mountain tunnel, specifically on the upper surface of the second buffer layer 6.

[0063] Step 3: Pour the slab (i.e., pour the bottom slab 3).

[0064] The specific process is as follows: The bottom slab 3 is poured with concrete.

[0065] Step 4: Connect (i.e., connect the mountain tunnel and the arched plate 2).

[0066] The specific process is as follows: A plurality of openings are formed in the arched plate 2, and the bolts 1 can fixedly connect the arched plate and the mountain tunnel through the openings.

[0067] Step 5: Grout.

[0068] The specific process is as follows: The slurry is poured into the through hole 11 of the bolt 1, and the slurry can flow into the space between the arched plate 2 and the mountain tunnel through a plurality of injection holes 12 on the surface of the bolt 1.

[0069] Step 6: Place the rod (i.e., place the support rod 7 on the inner wall of the arched plate 2).

[0070] The specific process is as follows: The support rod 7 is placed (i.e., closely attached) on the inner wall of the arched plate.

[0071] Step 6: Weld the rod (i.e., weld the limiting rod 8 and the reinforcing rod 9 on the support rod 7 in sequence).

[0072] The specific process is as follows: A pair of limiting rods 8 are symmetrically and fixedly arranged (for example, welded) on the longitudinal two sides of the support rod 7, and then a reinforcing rod 9 is fixedly arranged (for example, welded) between the two limiting rods 8.

[0073] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the present invention. Any simple modification, change, and equivalent structural change made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A mountain tunnel reinforcement device, characterized in that: It includes an arch frame (2) for supporting the mountain tunnel, which is fixedly connected to the inner wall of the mountain tunnel by bolts (1). A through hole (11) for injecting slurry is provided on the axial surface of the bolt (1), and a plurality of injection holes (12) for allowing the slurry to flow into the space between the mountain tunnel and the arch frame (2) are provided on the radial surface of the bolt (1).

2. The mountain tunnel reinforcement device according to claim 1, characterized in that: It further includes a bottom plate (3) fixedly connected to the bottom of the arch frame (2) for supporting the arch frame (2).

3. The mountain tunnel reinforcement device according to claim 2, wherein: It further includes a reinforcement layer (4) fixedly connected to the periphery of the bottom plate (3) for strengthening the arch frame (2).

4. An apparatus for reinforcing a mountain tunnel according to claim 3, wherein: It further includes a first buffer layer (5) laid at the bottom of the reinforcement layer (4) for buffering the pressure exerted by the mountain tunnel reinforcement device on the underlying formation, and a second buffer layer (6) laid at the bottom of the first buffer layer (5) for buffering the pressure exerted by the mountain tunnel reinforcement device on the underlying formation.

5. A mountain tunnel reinforcement device according to claim 3, characterized in that: It further includes a support mechanism provided on the inner wall of the arch frame (2). The support mechanism includes a support rod (7) provided on the inner wall of the arch frame (2), a pair of limiting rods (8) longitudinally symmetrically provided on the inner wall of the support rod (7) and fixedly connected to the support rod (7) for enhancing the anti-deformation ability of the support rod (7), and a reinforcement rod (9) provided between the pair of limiting rods (8) and fixedly connected to the limiting rods (8) for enhancing the stability of the limiting rods (8).

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