A modular rock support structure

Abstract

This utility model relates to the field of surrounding rock support technology, specifically disclosing a prefabricated surrounding rock support structure, including a support plate, which includes a plate body and T-slots disposed at the top and bottom of the plate body; a connector disposed between adjacent plates for connecting adjacent plates; a support mesh that abuts against the rock wall, which includes a support mesh body and a plurality of circular holes disposed on the support mesh body; an anchor bolt, which includes an anchor bolt body passing through the circular holes and a limiting plate connected to one side of the anchor bolt body for fixing the support mesh body; and an installation component; in this utility model, through the modular combination of various components, a stable support is formed. The combination of the support mesh and the anchor bolt can effectively control the spalling and peeling of the soft rock surface, maintain the stability of the tunnel outline, and adjust the arrangement density of the anchor bolts and the spacing of the support plates according to the strength of the soft rock, thus providing high flexibility.

Description

Technical Field

[0001] This utility model relates to the field of surrounding rock support technology, specifically a modular surrounding rock support structure. Background Technology

[0002] For soft rock dynamic pressure roadways, support is required. During the support process, the bearing capacity of the surrounding rock itself should be fully utilized to improve the overall stability of the roadway.

[0003] A tunnel surrounding rock support structure disclosed in existing patent publication number CN218235139U includes an arch waist, an arch bottom, and an arch top. The arch waist is located at the top of the arch top, and the arch bottom is located at the bottom of the arch waist. A waterproof buffer layer is provided on the outside of the arch waist, arch bottom, and arch top. Buffer reinforcement is provided inside the waterproof buffer layer. A support layer is provided outside the waterproof buffer layer. An anchor rod is provided outside the support layer. A filling layer is provided outside the support layer. The use of superimposed filling and support layers enhances the tightness of the connection between the surrounding rock and the support structure. The added waterproof buffer layer allows for a certain elastic deformation space between the support structure and the tunnel surrounding rock. The added spiral anchor rod enhances the tightness of the connection with the surrounding rock.

[0004] In the aforementioned support structure, there is space for elastic deformation within the support. However, during construction, the support layer is installed outside the waterproof buffer layer and needs to be tightly integrated with the buffer layer to effectively transfer loads and provide stable support. This is difficult to operate during installation, affecting the subsequent support effect. To address these issues, a prefabricated rock support structure is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a modular rock support structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A prefabricated rock support structure includes a support plate, which comprises a plate body and T-slots disposed at the top and bottom of the plate body; a connector disposed between adjacent plates for connecting adjacent plates; a support mesh abutting against the rock wall, comprising a support mesh body and a plurality of circular holes disposed on the support mesh body; an anchor bolt, comprising an anchor bolt body passing through the circular holes and a limiting plate connected to one side of the anchor bolt body for fixing the support mesh body; and an installation component connected between the plate body and the support mesh body, comprising a sleeve disposed on one side of the support mesh body and a sliding rod disposed on one side of the plate body, wherein the sleeve and the sliding rod are connected by a buffer component.

[0008] In one alternative embodiment: the connector includes two sets of T-strips and a connecting pad connecting the two sets of T-strips, both ends of the T-groove are connected to the outside, and the T-strips are slidably inserted into the T-groove.

[0009] In one alternative: the T-shaped strip is provided with screw holes, and the plate is provided with through holes corresponding to the screw holes.

[0010] In one alternative: the limiting plate is placed on the side of the support mesh body closer to the plate, and the size of the limiting plate is larger than the size of the circular hole.

[0011] In one alternative: the buffer includes a spring disposed within a sleeve, one end of the slide rod extends slidably into the sleeve and is connected to the spring, and the sleeve has a sleeve hole on the side away from the slide rod that engages with the end of the anchor rod body.

[0012] In one alternative: the outer ring of the sleeve on the side away from the plate body contacts the limiting plate.

[0013] In one alternative: the end of the slide rod away from the sleeve is fixedly connected to a fixing plate, the fixing plate is provided with a positioning screw hole, and the plate body is provided with a positioning hole corresponding to the positioning screw hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, a stable support is formed through the modular combination of various components. The combination of the support net and anchor bolts can effectively control the spalling and peeling of the soft rock surface and maintain the stability of the tunnel outline. The arrangement density of the anchor bolts and the spacing of the support plates can be adjusted according to the strength of the soft rock, which is highly flexible. The support plates can be connected by the installation parts, and adjacent support plates can be connected by the connectors. When the surrounding rock deforms, the installation parts have a buffering effect to prevent the support plates from being damaged by rigid compression. The connectors are placed between adjacent support plates to form a protection, which facilitates the layout of support plates along the rock wall. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a structural schematic diagram of the side where the support net is installed in this utility model.

[0018] Figure 3 This is a schematic diagram of the support net and anchor rod components in this utility model.

[0019] Figure 4 This is a side view of the structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the mounting component of this utility model.

[0021] In the diagram: 1. Support plate; 2. Connector; 3. Support mesh; 4. Anchor bolt; 5. Installer; 11. Plate; 12. T-slot; 13. Positioning hole; 21. T-strip; 22. Connecting pad; 31. Support mesh body; 32. Round hole; 41. Anchor bolt body; 42. Limiting plate; 51. Sleeve; 52. Sliding rod; 53. Fixing plate; 54. Spring. Detailed Implementation

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 In this embodiment, a prefabricated surrounding rock support structure includes a support plate 1, which includes a plate body 11 and T-shaped grooves 12 disposed at the top and bottom of the plate body 11.

[0025] Connector 2 is provided between adjacent plates 11 for connecting adjacent plates 11; support net 3 is attached to the rock wall, which includes support net body 31 and a number of round holes 32 provided on support net body 31;

[0026] Anchor bolt 4 includes an anchor bolt body 41 passing through a circular hole 32 and a limiting plate 42 connected to one side of the anchor bolt body 41 for fixing the support net body 31; the anchor bolt body 41 penetrates into the rock mass to form an anchor point; the support net body 31 is attached to the rock wall, the anchor bolt body 41 passes through the circular hole 32 and is inserted into the rock mass, and the limiting plate 42 presses the support net 3 to wrap and fix the loose rock mass on the surrounding rock surface to prevent fragments from falling off.

[0027] And mounting component 5, which is connected between plate 11 and support net body 31, includes sleeve 51 disposed on one side of support net body 31 and slide rod 52 disposed on one side of plate 11, wherein sleeve 51 and slide rod 52 are connected by buffer component.

[0028] Please see Figure 2 The connector 2 includes two sets of T-shaped strips 21 and a connecting pad 22 connecting the two sets of T-shaped strips 21. Both ends of the T-shaped groove 12 are connected to the outside. The T-shaped strips 21 are slidably inserted into the T-shaped groove 12. Specifically, the T-shaped strips 21 are inserted into the T-shaped groove 12, and the connecting pad 22 is placed between adjacent plates 11 to form protection. In actual use, the connecting pad 22 can also be made of soft material, such as rubber.

[0029] Please see Figure 1 and 4 The T-shaped strip 21 is provided with screw holes, and the plate 11 is provided with through holes corresponding to the screw holes; specifically, screws or the like can be used to fix the T-shaped strip 21 in the T-shaped groove 12 inside the plate 11.

[0030] Please see Figure 4 The limiting plate 42 is placed on the side of the support net body 31 near the plate 11, and the size of the limiting plate 42 is larger than the size of the round hole 32; the limiting plate 42 can press the support net body 31.

[0031] Please see Figure 5 The buffer includes a spring 54 disposed inside the sleeve 51. One end of the slide rod 52 extends slidably into the sleeve 51 and is connected to the spring 54. The sleeve 51 has a sleeve hole on the side away from the slide rod 52 that is fitted with the end of the anchor body 41. Specifically, the slide rod 52 cooperates with the spring 54 inside the sleeve 51. When the surrounding rock deforms, the spring 54 is compressed to absorb energy, preventing the plate 11 from being damaged by rigid compression. At the same time, the sleeve 51 transmits the rock wall pressure to the overall support structure.

[0032] Please see Figure 4 The outer ring of the sleeve 51 on the side away from the plate 11 contacts the limiting plate 42; the sleeve 51 and the limiting plate 42 can be connected and fixed by screws or welding.

[0033] Please see Figure 4 The end of the slide rod 52 away from the sleeve 51 is fixedly connected to the fixing plate 53. The fixing plate 53 is provided with a positioning screw hole, and the plate body 11 is provided with a positioning hole 13 corresponding to the positioning screw hole. The plate body 11 and the fixing plate 53 can be connected and fixed by bolts or screws.

[0034] The working principle of this utility model is as follows: the main body 31 of the support net is attached to the rock wall, the main body 41 of the anchor rod is inserted into the rock body through the round hole 32, the limiting plate 42 presses the support net 3, wraps and fixes the loose rock body on the surface of the surrounding rock to prevent fragments from falling off, the sleeve 51 is connected and fixed to the limiting plate 42, and the plate 11 and the fixing plate 53 can be connected and fixed using bolts or screws, the T-shaped strip 21 is inserted into the T-shaped groove 12, and the connecting pad 22 is placed between adjacent plates 11 to form protection. In actual use, the connecting pad 22 can also be made of soft material, such as rubber. When the surrounding rock deforms, the spring 54 is compressed and absorbs energy to prevent the plate 11 from being damaged by rigid compression. At the same time, the sleeve 51 transmits the rock wall pressure to the overall support structure.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in 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 of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A modular surrounding rock support structure, characterized in that, include Support plate (1), which includes plate body (11) and T-slots (12) provided at the top and bottom of plate body (11); A connector (2) is provided between adjacent plates (11) for connecting adjacent plates (11); The support net (3) is attached to the rock wall, which includes the support net body (31) and a number of round holes (32) set on the support net body (31); An anchor bolt (4) includes an anchor bolt body (41) passing through a round hole (32) and a limiting plate (42) connected to one side of the anchor bolt body (41) for fixing the support net body (31); as well as The mounting component (5) is connected between the plate (11) and the support net body (31). It includes a sleeve (51) disposed on one side of the support net body (31) and a slide rod (52) disposed on one side of the plate (11). The sleeve (51) and the slide rod (52) are connected by a buffer.

2. The prefabricated surrounding rock support structure according to claim 1, characterized in that: The connector (2) includes two sets of T-shaped strips (21) and a connecting pad (22) connecting the two sets of T-shaped strips (21). Both ends of the T-shaped groove (12) are connected to the outside, and the T-shaped strips (21) are slidably placed into the T-shaped groove (12).

3. The prefabricated surrounding rock support structure according to claim 2, characterized in that: The T-shaped strip (21) is provided with screw holes, and the plate (11) is provided with through holes corresponding to the screw holes.

4. The prefabricated surrounding rock support structure according to claim 1, characterized in that: The limiting plate (42) is placed on the side of the support net body (31) close to the plate (11), and the size of the limiting plate (42) is larger than the size of the round hole (32).

5. The prefabricated surrounding rock support structure according to claim 1, characterized in that: The buffer includes a spring (54) disposed in the sleeve (51), one end of the slide rod (52) extends slidably into the sleeve (51) and is connected to the spring (54), and the sleeve (51) is provided with a sleeve hole on the side away from the slide rod (52) for engaging with the end of the anchor rod body (41).

6. The prefabricated surrounding rock support structure according to claim 5, characterized in that: The outer ring of the sleeve (51) on the side away from the plate (11) contacts the limiting plate (42).

7. The prefabricated surrounding rock support structure according to claim 1, characterized in that: The sliding rod (52) is fixedly connected to a fixing plate (53) at the end away from the sleeve (51). The fixing plate (53) is provided with a positioning screw hole, and the plate body (11) is provided with a positioning hole (13) corresponding to the positioning screw hole.

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