Full-section excavation supporting structure for granite geological tunnel

Abstract

The utility model relates to the technical field of tunnel construction, and provides a granite geological tunnel full-section excavation supporting structure which comprises a base and a concrete supporting structure arranged on the surface of the base. The two sets of reinforcing rib plates are fixedly installed at the symmetrical positions of the surface of the base, and the surfaces of one sides of the two sets of reinforcing rib plates are arranged on the surface of the installation base; the anchor rods are arranged on the outer surface of the concrete supporting structure. The supporting force on the concrete supporting structure is enhanced through the reinforcing rib plates, meanwhile, the anchor rods are arranged on the surface of the concrete supporting structure, the overall stability is enhanced by means of assistance of cement, meanwhile, the sliding blocks are embedded in the sliding grooves for installation, the installation frame is supported through the supporting rods, and the supporting effect is good. And the arc-shaped plate at the top is in contact with the inner wall of the concrete supporting structure, so that second protection except the concrete supporting structure body is provided, and the overall mounting performance is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a full-section excavation support structure for granite geological tunnels. Background Art

[0002] Excavating a full-section tunnel under granite geological conditions usually involves multiple construction steps, including blasting drilling, bolt drilling, and shotcrete. First, blasting is one of the most commonly used methods in tunnel excavation, especially under hard rock conditions. Then, bolts are used to reinforce the surrounding rock and improve the stability of the tunnel. Installing bolts in granite can effectively control the deformation of the rock mass and reduce the pressure on the support structure. Finally, shotcrete is used, which is an effective method for quickly reinforcing the surrounding rock and can rapidly form a support structure to protect the safety of workers.

[0003] In the prior art, currently, most tunnel supports use a rigid reinforced concrete support structure. Such a support form cannot release the pressure and energy accumulated in the surrounding rock due to the redistribution of stress during tunnel excavation. When the accumulated surrounding rock pressure is greater than its own ability to resist deformation, sudden release of energy will occur, causing cracking or even collapse of the rigid reinforced concrete lining structure. Therefore, it needs to be solved. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art: currently, most tunnel supports use a rigid reinforced concrete support structure. Such a support form cannot release the pressure and energy accumulated in the surrounding rock due to the redistribution of stress during tunnel excavation. When the accumulated surrounding rock pressure is greater than its own ability to resist deformation, sudden release of energy will occur, causing cracking or even collapse of the rigid reinforced concrete lining structure.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a full-section excavation support structure for granite geological tunnels, including: a base, and a concrete support structure disposed on the surface of the base; further including:

[0006] Two groups of reinforcing rib plates, both fixedly installed symmetrically on the surface of the base, and one side surface of the two groups of reinforcing rib plates is disposed on the surface of the mounting seat;

[0007] Multiple groups of bolts, disposed on the outer surface of the concrete support structure, and a chute is opened on one inner wall of the concrete support structure;

[0008] A slider, slidably embedded in the interior of the chute.

[0009] Preferably, a mounting seat is fixedly installed on one side surface of the slider, and the mounting seat is slidably embedded in the interior of the concrete support structure.

[0010] The technical effect of adopting the above further solution is that the mounting seat on the surface contacts the inner wall of the concrete support structure by sliding and fitting the slider inside the chute.

[0011] Preferably, clamping grooves are provided on the inner walls at the symmetrical positions of the concrete support structure, and a plurality of notches are provided at the symmetrical positions on the surface of the mounting seat.

[0012] The technical effect of adopting the above further solution is that by providing clamping grooves on the inner wall of the concrete support structure, it is convenient to install the internal parts, and at the same time, the notches are convenient for limiting the internal parts.

[0013] Preferably, support rods are fixedly installed at the four corners of the surface of the mounting seat, and the surfaces of one ends of the plurality of support rods are slidably fitted inside the inner wall of the concrete support structure.

[0014] The technical effect of adopting the above further solution is that the support rods on the surface are fixed by the mounting seat, and at the same time, the support rods slide inside the concrete support structure, and the stability is enhanced through the contact surface between the two.

[0015] Preferably, a mounting frame is fixedly installed on the top surfaces of the plurality of support rods, and an arc-shaped plate is provided on one side surface of the mounting frame.

[0016] The technical effect of adopting the above further solution is that the support rods provide support and positioning for the mounting frame on the top, and at the same time, the mounting frame positions the arc-shaped plate on the top.

[0017] Preferably, one side surface of the arc-shaped plate is slidably fitted on the inner wall of the concrete support structure, and multiple sets of triangular frames are provided on the surface of the mounting frame.

[0018] The technical effect of adopting the above further solution is that the arc-shaped plate contacts the concrete support structure, and the arc-shaped plate can be made of an integral alloy material, which has the characteristic of high strength, further providing a protection effect, and at the same time, the mounting frame fixes the triangular frames.

[0019] Preferably, one side surfaces of the multiple sets of triangular frames are fixedly installed on the inner wall of the arc-shaped plate, and a plurality of telescopic reinforcing rods are provided at the symmetrical positions on the surface of the mounting frame.

[0020] The technical effect of adopting the above further solution is that the triangular frames provide a supporting force for the arc-shaped plate, enhancing the stability performance, and at the same time, the mounting frame fixes the telescopic reinforcing rods on the surface.

[0021] Preferably, the outer surfaces of the plurality of telescopic reinforcing rods are slidably fitted inside the notches, and one ends of the plurality of telescopic reinforcing rods are movably fitted inside the clamping grooves.

[0022] The technical effect of adopting the above further solution is that when the telescopic reinforcing rod is embedded inside the notch and the card slot, the positioning work of the mounting seat is carried out.

[0023] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0024] 1. In the present utility model, the supporting force of the concrete supporting structure is strengthened through the reinforcing rib plates. At the same time, multiple anchor rods are arranged on the surface of the concrete supporting structure. With the assistance of cement, the overall stability is enhanced. Meanwhile, the slider is embedded inside the sliding groove for installation. The mounting frame is supported by multiple support rods, so that the top arc-shaped plate contacts the inner wall of the concrete supporting structure, providing a second layer of protection in addition to the concrete supporting structure body itself, and enhancing the overall installation performance.

[0025] 2. In the present utility model, multiple telescopic reinforcing rods are arranged on the surface of the mounting frame to carry out auxiliary supporting work. The cooperation with the triangular frame at the top forms a triangle, enhancing the stability performance. Meanwhile, the telescopic reinforcing rods can be telescopically adjusted. When one end is embedded inside the notch and the card slot, the positioning work of the mounting seat is carried out. When the construction is completed, the entire mounting seat can be disassembled, achieving the effect of repeated utilization. Description of the Drawings

[0026] Figure 1 It is a schematic side view structure diagram of a full-section excavation support structure for a granite geological tunnel proposed by the present utility model;

[0027] Figure 2 It is a partial unfolded structure diagram of a full-section excavation support structure for a granite geological tunnel proposed by the present utility model;

[0028] Figure 3 It is an unfolded structure diagram of a full-section excavation support structure for a granite geological tunnel proposed by the present utility model;

[0029] Figure 4 It is a Figure 2 magnified structure diagram of part A in the full-section excavation support structure for a granite geological tunnel proposed by the present utility model.

[0030] Legend Explanation:

[0031] 1. Base; 101. Reinforcing rib plate; 102. Concrete supporting structure; 1021. Anchor rod; 1022. Sliding groove; 1023. Card slot; 2. Mounting seat; 201. Slider; 2011. Notch; 202. Support rod; 203. Mounting frame; 2031. Triangular frame; 2032. Telescopic reinforcing rod; 204. Arc-shaped plate. Detailed Embodiment

[0032] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0033] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0034] Embodiment 1, as Figures 1 to 4 shown, the present utility model provides a full-face excavation support structure for a granite geological tunnel, including: a base 1, and a concrete support structure 102 disposed on the surface of the base 1; further including: two groups of reinforcing rib plates 101, both fixedly installed at symmetric positions on the surface of the base 1, and one side surface of the two groups of reinforcing rib plates 101 is disposed on the surface of the mounting seat 2; a plurality of anchor bolts 1021 are disposed on the outer surface of the concrete support structure 102, and a chute 1022 is opened on one inner wall of the concrete support structure 102; a slider 201 is slidably embedded in the interior of the chute 1022.

[0035] In this embodiment, the supporting force of the concrete support structure 102 is strengthened by the reinforcing rib plates 101. At the same time, a plurality of anchor bolts 1021 are disposed on the surface of the concrete support structure 102. With the assistance of cement, the overall stability is strengthened. At the same time, the slider 201 is embedded in the interior of the chute 1022 for installation. The mounting frame 203 is supported by a plurality of support rods 202, so that the arc-shaped plate 204 at the top contacts the inner wall of the concrete support structure 102, providing a second layer of protection in addition to the concrete support structure 102 itself, and strengthening the overall installation performance.

[0036] Embodiment 2: A mounting base 2 is fixedly installed on one side surface of the slider 201. The mounting base 2 is slidably embedded inside the concrete support structure 102. Card slots 1023 are formed in the inner walls at the symmetrical positions of the concrete support structure 102. Multiple notches 2011 are formed at the symmetrical positions on the surface of the mounting base 2. Support rods 202 are fixedly installed at the four corners on the surface of the mounting base 2. One ends of the multiple support rods 202 are slidably embedded in the inner wall of the concrete support structure 102. A mounting frame 203 is fixedly installed on the top surfaces of the multiple support rods 202. An arc-shaped plate 204 is arranged on one side surface of the mounting frame 203. One side surface of the arc-shaped plate 204 is slidably embedded in the inner wall of the concrete support structure 102. Multiple sets of triangular frames 2031 are arranged on the surface of the mounting frame 203. One side surfaces of the multiple sets of triangular frames 2031 are fixedly installed on the inner wall of the arc-shaped plate 204. Multiple telescopic reinforcing rods 2032 are arranged at the symmetrical positions on the surface of the mounting frame 203. The outer surfaces of the multiple telescopic reinforcing rods 2032 are slidably embedded inside the notches 2011. One ends of the multiple telescopic reinforcing rods 2032 are movably embedded inside the card slots 1023.

[0037] In this embodiment, multiple telescopic reinforcing rods 2032 are arranged on the surface of the mounting frame 203 to perform auxiliary support work. The triangular frames 2031 at the top are in a triangular shape to enhance the stability performance. At the same time, the telescopic reinforcing rods 2032 can be telescopically adjusted. When one end is embedded inside the notches 2011 and the card slots 1023, positioning work is carried out on the mounting base 2. When the construction is completed, the mounting base 2 can be disassembled as a whole to achieve the effect of repeated use.

[0038] Working principle: During use, the support force of the concrete support structure 102 is strengthened by the reinforcing rib plates 101. At the same time, multiple anchor rods 1021 are arranged on the surface of the concrete support structure 102. With the assistance of cement, the overall stability is enhanced. At the same time, the slider 201 is embedded inside the chute 1022 for installation. The mounting frame 203 is supported by multiple support rods 202, so that the arc-shaped plate 204 at the top contacts the inner wall of the concrete support structure 102, providing a second layer of protection in addition to the concrete support structure 102 itself and enhancing the overall installation performance. In addition, multiple telescopic reinforcing rods 2032 are arranged on the surface of the mounting frame 203 to perform auxiliary support work. The triangular frames 2031 at the top are in a triangular shape to enhance the stability performance. At the same time, the telescopic reinforcing rods 2032 can be telescopically adjusted. When one end is embedded inside the notches 2011 and the card slots 1023, positioning work is carried out on the mounting base 2. When the construction is completed, the mounting base 2 can be disassembled as a whole to achieve the effect of repeated use.

[0039] The above are only the preferred embodiments of the present utility model, and do not limit the present utility model in other forms. Any person skilled in the relevant art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution content of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A full-section excavation support structure for a granite geological tunnel, comprising: A base (1), a concrete support structure (102), arranged on the surface of the base (1); characterized in that it also comprises: Two groups of reinforcing ribs (101) are fixedly mounted at symmetrical positions on the surface of the base (1), and one side surface of the two groups of reinforcing ribs (101) is arranged on the surface of the mounting seat (2); A plurality of groups of anchor rods (1021) are arranged on the outer surface of the concrete support structure (102), and a slide groove (1022) is provided on an inner wall of one side of the concrete support structure (102); The sliding block (201) is slidably embedded in the sliding groove (1022).

2. A granite geological tunnel full-section excavation support structure according to claim 1, characterized in that: A mounting seat (2) is fixedly mounted on one side surface of the sliding block (201), and the mounting seat (2) is slidably embedded in the interior of the concrete supporting structure (102).

3. A granite geological tunnel full-section excavation support structure according to claim 2, characterized in that: A clamping groove (1023) is provided on the inner wall at a symmetrical position of the concrete support structure (102), and a plurality of notches (2011) are provided at a symmetrical position on the surface of the mounting seat (2).

4. A granite geological tunnel full-section excavation support structure according to claim 3, characterized in that: Support rods (202) are fixedly mounted at the four corners of the surface of the mounting seat (2), and the surfaces of one ends of a plurality of the support rods (202) are slidably embedded in the inner wall of the concrete support structure (102).

5. A granite geological tunnel full-section excavation support structure according to claim 4, characterized in that: A mounting frame (203) is fixedly mounted on the top surface of the plurality of support rods (202), and a curved plate (204) is provided on one side surface of the mounting frame (203).

6. A granite geological tunnel full-section excavation support structure according to claim 5, characterized in that: One side surface of the arc-shaped plate (204) is slidably embedded in the inner wall of the concrete support structure (102), and a plurality of tripods (2031) are arranged on the surface of the mounting frame (203).

7. A granite geological tunnel full-section excavation support structure according to claim 6, characterized in that: One side surface of the plurality of sets of tripods (2031) is fixedly mounted on the inner wall of the arc-shaped plate (204), and a plurality of telescopic reinforcing rods (2032) are provided at symmetrical locations on the surface of the mounting frame (203).

8. The full-section excavation support structure for a granite geological tunnel according to claim 7, characterized in that: The outer surfaces of the plurality of telescopic reinforcement rods (2032) are slidably embedded in the interior of the notch (2011), and one end of the plurality of telescopic reinforcement rods (2032) is movably embedded in the interior of the slot (1023).

Images