A device for supporting the slope of an open pit mine

Abstract

The utility model discloses an open pit mine slope supporting device relates to the technical field of slope support. Its structure includes comprehensive slope protection net pad, anchor rod, puncture connecting seat and fixed nut, and the comprehensive slope protection net pad includes cement blanket layer, steel wire rope net and net cylinder fixed on the steel wire rope net, the outer thread connection part of puncture connecting seat connection is set to the anchor rod upper end, and the anchor rod main body is installed in the mine slope, and the puncture connecting seat is installed and is placed below the comprehensive slope protection net pad and is connected with fixed nut screw thread after passing through cement blanket layer and steel wire rope net in proper order. The utility model discloses a net cylinder convex reinforcement rockfall intercepting force, and the cement blanket layer solidification forms the firm isolation layer when meeting water, and the slope stability is improved, and the winding transportation avoids the entanglement of steel wire rope net, and the installation is quick, and the anchor rod, puncture connecting seat and fixed nut cooperate, and the structure is firm, and the PP or ABS material is corrosion -resistant, adapts to the severe environment, effectively guarantees the mine operation safety, reduces the construction difficulty and cost.

Description

Technical Field

[0001] This utility model belongs to the field of slope protection technology, and in particular relates to a slope protection device for open-pit mines. Background Technology

[0002] With the continuous exploitation of mineral resources, the stability of open-pit mine slopes has become an increasingly prominent issue. Especially in mines with long operating histories, landslides caused by slope instability occur frequently, seriously threatening the personal safety of miners and the safety of surrounding property. Therefore, how to effectively improve the stability of open-pit mine slopes and prevent landslide accidents has become a crucial issue that urgently needs to be addressed in the field of mine safety.

[0003] Currently, the main method of slope protection is the use of slope protection nets. Specifically, various flexible nets, primarily steel wire rope nets, are used to cover or wrap the slopes or rocks requiring protection, limiting weathering and erosion of the slope's soil and rock, as well as preventing rockfalls, thus providing reinforcement and enclosure. However, existing slope protection nets still have many shortcomings in practical applications.

[0004] On the one hand, traditional wire rope nets have a flat surface and lack protrusions, resulting in limited effectiveness in intercepting falling rocks rolling down slopes and failing to effectively prevent the safety threats posed by falling rocks to the area below. On the other hand, wire rope nets are prone to entanglement during winding, transportation, and installation, which not only increases construction difficulty but also affects construction efficiency. Furthermore, the wire rope nets are relatively weak at preventing the detachment of gravel beneath them, making it difficult to meet the complex and ever-changing needs of mine slope protection.

[0005] To address the aforementioned issues, it is necessary to design a new type of open-pit mine slope support device to improve slope stability, enhance rockfall interception, facilitate transportation and installation, and reduce construction difficulty and costs.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this utility model is to provide a slope protection device for open-pit mines. By setting up an integrated slope protection mat that includes a cement blanket layer, a wire rope net and a net cylinder, and fixing it with anchor bolts, piercing connectors and fixing nuts, it solves the problems of limited interception effect, inconvenient transportation and paving, weak ability to block the crushed stone below and poor applicability in harsh environments of existing wire rope nets.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to an open-pit mine slope support device, comprising a composite slope protection mat, anchor bolts, a piercing connector, and a fixing nut; the composite slope protection mat includes a cement blanket layer, a wire rope mesh, and a mesh cylinder fixed to the wire rope mesh; the upper end of the anchor bolt is provided with an external threaded connection part that connects to the piercing connector, and the main body of the anchor bolt is installed inside the mine slope; when installed, the piercing connector is placed below the composite slope protection mat, passes through the cement blanket layer and the wire rope mesh in sequence, and is then threadedly connected to the fixing nut.

[0009] As a preferred technical solution of this utility model, the cement blanket layer and the wire rope net are wound around the net cylinder before the integrated slope protection net is laid.

[0010] As a preferred embodiment of this utility model, the cement blanket layer and the wire rope net are sewn together.

[0011] As a preferred embodiment of this utility model, the net cylinder includes a row of metal rings fixed to the wire rope net; a ring of metal strips is fixed to the inner wall of the row of metal rings.

[0012] As a preferred embodiment of this utility model, the puncture connection seat includes a disc base; a pointed cone is fixed on the upper surface of the disc base; the outer wall of the pointed cone is provided with an external thread that engages with the threaded connection of the fixing nut; the disc base and the pointed cone are jointly provided with an internal thread blind hole that connects with the external thread connection portion of the puncture connection seat.

[0013] In a preferred embodiment of this invention, the fixing nut is a flange nut; the piercing connector and the fixing nut are both made of PP or ABS.

[0014] This utility model has the following beneficial effects: This utility model of integrated slope protection mat involves winding the cement blanket layer and steel wire rope mesh onto a cylinder before laying, enabling integrated winding transportation and effectively eliminating the entanglement problems that may occur when the steel wire rope mesh is wound separately. It can be quickly unrolled during installation, improving construction efficiency. The design of the cylinder increases the protrusion of the integrated slope protection mat, significantly enhancing its ability to intercept falling rocks rolling down the slope and effectively preventing the safety threat posed by falling rocks to the area below. After laying, the cement blanket layer is watered, and it quickly solidifies upon contact with water, rapidly forming a robust isolation layer on the surface of the mine slope, enhancing the overall stability of the slope.

[0015] This utility model uses the combined use of anchor bolts, piercing connectors, and fixing nuts to firmly fix the integrated slope protection mat to the mine slope, ensuring the long-term stability and reliability of the support device.

[0016] The piercing connector and fixing nut of this utility model are made of PP or ABS. These materials have good corrosion resistance and mechanical strength, which can adapt to the harsh working environment of open mines and extend the service life of the device.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the installation and implementation of the open-pit mine slope support device of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the integrated slope protection mesh.

[0021] Figure 3 This is a schematic diagram of the puncture connector.

[0022] Figure 4 This is a schematic diagram of the structure for fixing the nut.

[0023] The attached diagram lists the components represented by each number as follows: 1-Comprehensive slope protection mat, 11-Cement blanket layer, 12-Wire rope net, 13-Net cylinder, 131-Metal ring, 132-Metal strip, 2-Anchor bolt, 3-Piercing connector, 31-Disc base, 32-Pointed cone column, 33-Internal thread blind hole, 4-Fixing nut. Detailed Implementation

[0024] 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 scope of protection of the present utility model. Specific Implementation Example 1: Please see Figure 1-4As shown, addressing the shortcomings of existing methods that rely solely on wire rope netting for slope protection after mining operations, this invention redesigns a support device for open-pit mine slopes. This device uses a composite slope protection mat 1 as its main structure. The composite slope protection mat 1 comprises a cement blanket layer 11, a wire rope net 12, and a net cylinder 13 fixed to the wire rope net 12. Before laying the composite slope protection mat 1, the cement blanket layer 11 and the wire rope net 12 are wound onto the net cylinder 13, achieving integrated winding transportation and effectively preventing entanglement problems that may occur when the wire rope net is wound separately. During installation, the composite slope protection mat 1 can be quickly unfolded. After laying, the cement blanket layer 11 is watered, and upon contact with water, it rapidly solidifies, quickly forming a robust isolation layer on the mine slope surface, enhancing slope stability.

[0026] In particular, the design of the mesh cylinder 13 not only facilitates transportation and installation, but its large protrusion also significantly enhances its ability to intercept falling rocks rolling down the slope, effectively preventing the safety threat posed by falling rocks to the area below. During installation, anchoring holes are first pre-drilled on the open-pit mine slope, and anchor rods 2 are pre-embedded. Subsequently, the piercing connector 3 is installed on the upper end of the pre-embedded anchor rods 2. The piercing connector 3 includes a disc base 31 and a pointed cone 32 fixed to the upper surface of the disc base 31. The outer wall of the pointed cone 32 is provided with external threads that mate with the fixing nut 4. When laying the integrated slope protection mesh 1, the pointed cone 32 of the piercing connector 3 passes through the cement blanket layer 11 and the wire rope mesh 12 in sequence, and then is threadedly connected to the external threads on the pointed cone 32 by rotating the fixing nut 4 (a flange nut is used in this example), thereby firmly fixing the integrated slope protection mesh 1 to the open-pit mine slope.

[0027] The cement blanket layer 11 and the wire rope net 12 are connected by sewing, ensuring a tight bond and overall stability between the two. The net cylinder 13 includes a row of metal rings 131 fixed to the wire rope net 12, and a ring of metal strips 132 is fixed to the inner wall of the row of metal rings 131, which enhances the structural strength and durability of the net cylinder 13.

[0028] In addition, the materials of the piercing connector 3 and the fixing nut 4 are both PP or ABS. These materials have good corrosion resistance and mechanical strength, and can adapt to the harsh working environment of open-pit mines.

[0029] One specific application of this embodiment is the use of the open-pit mine slope protection device designed in this invention for slope protection in open-pit mine slope management projects. This effectively improves slope stability, significantly reduces rockfalls, and ensures the safe operation of the mine. Furthermore, its convenient transportation and installation methods greatly improve construction efficiency and reduce construction costs.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A slope support device for open-pit mines, characterized in that: Includes integrated slope protection mesh (1), anchor bolts (2), piercing connectors (3), and fixing nuts (4); The integrated slope protection mat (1) includes a cement blanket layer (11), a wire rope net (12), and a net cylinder (13) fixed on the wire rope net (12). The upper end of the anchor rod (2) is provided with an external threaded connection part that connects to the piercing connection seat (3), and the main body of the anchor rod (2) is installed inside the mine slope; When the piercing connector (3) is installed, it is placed below the integrated slope protection net mat (1), passes through the cement blanket layer (11) and the steel wire rope net (12) in sequence, and is then threadedly connected to the fixing nut (4).

2. The open-pit mine slope support device according to claim 1, characterized in that, Before the comprehensive slope protection mat (1) is laid, the cement blanket layer (11) and the wire rope net (12) are wound around the net cylinder (13).

3. The open-pit mine slope support device according to claim 1, characterized in that, The cement blanket layer (11) and the wire rope net (12) are sewn together.

4. The open-pit mine slope support device according to claim 1, characterized in that, The net cylinder (13) includes a row of metal rings (131) fixed on the wire rope net (12); a ring of metal strips (132) is fixed to the inner wall of the row of metal rings (131).

5. The open-pit mine slope support device according to claim 1, characterized in that, The piercing connector (3) includes a disc base (31); a pointed cone (32) is fixed on the upper surface of the disc base (31); the outer wall of the pointed cone (32) is provided with an external thread that is threaded to engage with the fixing nut (4); the disc base (31) and the pointed cone (32) are provided with an internal thread blind hole (33) that is connected to the external thread connection part of the piercing connector (3).

6. The open-pit mine slope support device according to claim 1, characterized in that, The fixing nut (4) is a flange nut.

7. The open-pit mine slope support device according to claim 1, characterized in that, The puncture connector (3) and the fixing nut (4) are made of PP or ABS.

Images