A mesh spraying thickness identification mechanism

Abstract

The utility model relates to a tunnel construction field, concretely is a kind of net hanging shotcrete thickness identification mechanism, including several identification poles, identification pole is arrayed along tunnel surrounding rock and is set, identification pole is inserted into surrounding rock, and it is connected with several limit plates along the length direction of identification pole at intervals, the number of limit plate matches the layer of shotcrete layer, and the position of limit plate on identification pole matches the design limit of shotcrete layer.The utility model of a kind of net hanging shotcrete thickness identification mechanism is matched with the limit plate of the design limit of shotcrete layer by being set on the identification pole inserted into surrounding rock, the accurate indication of each layer shotcrete thickness is realized, and shotcrete wraps limit plate exposes back surface and can be considered that shotcrete reaches design limit, it is convenient for worker operation identification, so that net hanging shotcrete thickness is uniform, reduce crack, peeling and other phenomena, improve the durability and reliability of support system, reduce repair cost and security risk, and the identification mechanism structure is simple, convenient to use, and the effect is good.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction, and in particular to a mechanism for marking the thickness of shotcrete with wire mesh. Background Technology

[0002] During tunnel construction, a series of initial support measures are adopted to ensure the stability of the surrounding rock and prevent rock spalling or collapse. Initial support measures typically include, but are not limited to, anchor bolts, steel mesh, shotcrete, and steel arches.

[0003] The installation of steel mesh and the layered shotcrete are crucial steps. The steel mesh enhances the tensile strength of the shotcrete, making the entire support structure more stable. Layered shotcrete refers to spraying concrete onto the surrounding rock surface in multiple stages to achieve the required thickness and strength.

[0004] Layered shotcreting helps improve the bond between the shotcrete layer and the surrounding rock, enhancing the support effect and effectively controlling rock deformation, thus ensuring construction safety. However, in actual shotcreting, the thickness of each shotcrete layer is difficult to control accurately. Insufficient thickness may lead to insufficient strength in the initial support structure, failing to effectively support the surrounding rock pressure and increasing the risk of tunnel deformation or even collapse. Conversely, excessive thickness may result in material waste and, in some cases, may affect the bond between the shotcrete layer and the surrounding rock, reducing the support effect.

[0005] Uneven or non-compliant shotcrete thickness may lead to cracks and spalling in the shotcrete layer, affecting the durability and reliability of the entire support system, and increasing repair costs and safety hazards. Utility Model Content

[0006] The purpose of this utility model is to address the problem that uneven or non-compliant layered shotcrete thickness in the initial support of tunnels during shotcrete construction may lead to cracks and spalling in the shotcrete layer, affecting the durability and reliability of the entire support system, and increasing repair costs and safety hazards. This invention provides a shotcrete thickness marking mechanism.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A shotcrete thickness marking mechanism includes several marking rods arranged in an array along the surrounding rock of a tunnel. The marking rods are inserted into the surrounding rock, and several limiting plates are connected at intervals along the length of the marking rods. The number of limiting plates matches the number of shotcrete layers, and the position of the limiting plates on the marking rods matches the design limit of the shotcrete layers.

[0008] The shotcrete thickness marking mechanism described in this utility model uses a limiting plate on the marking rod inserted into the surrounding rock, which matches the design limit of the shotcrete layer. This allows for accurate indication of the thickness of each shotcrete layer. When the shotcrete covers the limiting plate and exposes its back side, it is considered that the shotcrete has reached the design limit. This facilitates worker operation and identification, resulting in uniform shotcrete thickness, reducing cracks and spalling, improving the durability and reliability of the support system, and lowering repair costs and safety hazards. The marking mechanism has a simple structure, is easy to use, and has good effects.

[0009] As a preferred technical solution of this utility model, the marker rod includes an anchoring part and a supporting part, the anchoring part is connected to the supporting part, the anchoring part is inserted into the surrounding rock, and the limiting plate is disposed on the supporting part.

[0010] As a further preferred technical solution of this utility model, the anchoring part and the supporting part are integrally formed structures.

[0011] As a further preferred technical solution of this utility model, the signpost is made of steel bars.

[0012] As a further preferred technical solution of this utility model, the limiting plate is a steel plate.

[0013] As a further preferred technical solution of this utility model, the steel plate is welded to the reinforcing bar.

[0014] As a further preferred technical solution of this utility model, the support part is a screw, the limiting plate includes a screw hole, and the limiting plate is threadedly connected to the support part.

[0015] As a preferred technical solution of this utility model, all the limiting plates corresponding to the same sprayed concrete layer are configured to be the same color.

[0016] As a preferred technical solution of this utility model, the distance between two adjacent signposts is 20cm to 50cm.

[0017] As a preferred technical solution of this utility model, the signposts are arranged in a quincunx pattern along the length of the tunnel.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: The present invention discloses a shotcrete thickness marking mechanism. By setting a limiting plate on the marking rod inserted into the surrounding rock that matches the design limit of the shotcrete layer, the thickness of each shotcrete layer can be accurately indicated. When the shotcrete covers the limiting plate and exposes its back, it is considered that the shotcrete has reached the design limit. This facilitates worker operation and identification, resulting in uniform shotcrete thickness, reducing cracks and spalling, improving the durability and reliability of the support system, and reducing repair costs and safety hazards. The marking mechanism has a simple structure, is easy to use, and has good effects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the tunnel's cross-sectional structure; Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0020] Marked in the image: 01-Surrounding rock; 02-Shotcrete layer; 03-Design Boundaries; 1-Identification pole, 11-Anchoring part, 12-Supporting part; 2-Limit plate. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0022] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0024] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0025] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0026] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0027] In related technologies, during the initial support and shotcrete construction of tunnels, uneven or non-design-required layered shotcrete thickness may lead to cracks and spalling in the shotcrete layer, affecting the durability and reliability of the entire support system, and increasing repair costs and safety hazards. Therefore, the technical solution of this application was developed. The following section combines... Figures 1 to 2 To elaborate.

[0028] Example 1 like Figures 1 to 2 As shown, the present invention provides a wire mesh shotcrete thickness marking mechanism, which includes several marking rods 1 and several limiting plates 2 connected at intervals along the length of the marking rods 1.

[0029] like Figure 1 and Figure 2 As shown, the marker pole 1 is inserted into the surrounding rock 01, the number of the limiting plates 2 matches the number of sprayed concrete layers 02, and the position of the limiting plates 2 on the marker pole 1 matches the design limit 03 of the sprayed concrete layer 02; at the same time, the marker poles 1 are arranged in an array along the tunnel surrounding rock 01, and can also be arranged in a quincunx pattern along the tunnel length, so as to clearly delineate the interface of the design limit 03, which facilitates the identification and control of the sprayed grout thickness.

[0030] In some alternative embodiments, the marker rod 1 includes an anchoring part 11 and a support part 12, the anchoring part 11 is connected to the support part 12, the anchoring part 11 is inserted into the surrounding rock 01, and the limiting plate 2 is disposed on the support part 12.

[0031] In one optional embodiment, the anchoring part 11 and the supporting part 12 are integrally formed structures; for example, the marker rod 1 is made of a single section of steel bar, part of which is inserted into the surrounding rock 01, and the limiting plate 2 is a steel plate that can be welded to the steel bar.

[0032] In an optional embodiment, the support part 12 is a screw, and the limiting plate 2 includes a screw hole. The limiting plate 2 is threadedly connected to the support part 12, so that the position of the limiting plate 2 on the marking rod 1 can be adjusted to facilitate the matching of the position of the limiting plate 2 with the design boundary 03.

[0033] In an optional implementation, all the limiting plates 2 corresponding to the same shotcrete layer 02 are configured to be the same color, so that the design boundary 03 of the same shotcrete layer 02 can be quickly identified manually by the same color.

[0034] In one optional embodiment, the distance between two adjacent marker poles 1 is 20cm to 50cm.

[0035] The shotcrete thickness marking mechanism described in this embodiment achieves accurate indication of the shotcrete thickness of each layer by setting a limiting plate 2 on the marking rod 1 inserted into the surrounding rock 01, which matches the design limit 03 of the shotcrete layer 02. When the shotcrete covers the limiting plate 2 and exposes its back side, it is considered that the shotcrete has reached the design limit 03, which is convenient for workers to operate and identify. This results in uniform shotcrete thickness, reduces cracking and peeling, improves the durability and reliability of the support system, and reduces repair costs and safety hazards. The marking mechanism has a simple structure, is easy to use, and has good effects.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanism for marking the thickness of shotcrete applied to a wire mesh, characterized in that, It includes several marker poles (1), which are arranged in an array along the surrounding rock (01) of the tunnel. The marker poles (1) are inserted into the surrounding rock (01). Several limiting plates (2) are connected at intervals along the length of the marker poles (1). The number of limiting plates (2) matches the number of sprayed concrete layers (02), and the position of the limiting plates (2) on the marker poles (1) matches the design limit (03) of the sprayed concrete layers (02).

2. The shotcrete thickness marking mechanism according to claim 1, characterized in that, The marker pole (1) includes an anchoring part (11) and a support part (12). The anchoring part (11) is connected to the support part (12). The anchoring part (11) is inserted into the surrounding rock (01). The limiting plate (2) is provided on the support part (12).

3. The shotcrete thickness marking mechanism according to claim 2, characterized in that, The anchoring part (11) and the supporting part (12) are integrally formed structures.

4. The shotcrete thickness marking mechanism according to claim 3, characterized in that, The signpost (1) is made of steel bars.

5. The shotcrete thickness marking mechanism according to claim 4, characterized in that, The limiting plate (2) is a steel plate.

6. The shotcrete thickness marking mechanism according to claim 5, characterized in that, The steel plate is welded to the reinforcing bar.

7. The shotcrete thickness marking mechanism according to claim 2, characterized in that, The support part (12) is a screw, and the limiting plate (2) includes a screw hole. The limiting plate (2) is threadedly connected to the support part (12).

8. The shotcrete thickness marking mechanism according to claim 1, characterized in that, All the limiting plates (2) corresponding to the same sprayed concrete layer (02) are configured to be the same color.

9. The shotcrete thickness marking mechanism according to claim 1, characterized in that, The distance between two adjacent signposts (1) is 20cm to 50cm.

10. The shotcrete thickness marking mechanism according to any one of claims 1-9, characterized in that, The marker poles (1) are arranged in a quincunx pattern along the length of the tunnel.

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