Safety isolation guardrail for roadway under mine and installation mode of safety isolation guardrail

Abstract

The invention belongs to the technical field of safety protection in a mine, and mainly relates to a safety isolation guardrail for a roadway under the mine and a mounting mode thereof, the safety isolation guardrail comprises four fixed supports, two transverse rods, a plurality of vertical rods and a plurality of bolts; the fixed supports are fixedly connected with the ends of the transverse rods, the vertical rod is arranged between the two transverse rods, and the two ends of the vertical rod are fixedly connected with rod bodies of the two transverse rods respectively. The fixed support is composed of two square steel plates, and a T-shaped structure is formed. The cross rod comprises a left cross rod and a right cross rod; the bolts comprise expansion bolts and common bolts. A mounting mode: measuring and confirming the specific mounting position of the fixed support; four fixed supports are installed; the left cross rod and the right cross rod are fixedly connected to form two cross rods with proper lengths; the two transverse rods are correspondingly placed on the four fixed supports in parallel; and the vertical rod is fixedly connected with the cross rod. The scheme has the beneficial effects of simplicity in manufacturing, safety, reliability, tight protection, difficulty in damage, convenience in field disassembly and assembly, small volume, convenience in transportation, reusability and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of safety protection in mines, and mainly relates to a safety isolation guardrail for a mine tunnel and an installation method thereof. Background Art

[0002] During the mining process of underground mines, many tunnels with different functions are formed. Some tunnels are out of service due to safety issues or temporary suspension of construction. These out-of-service tunnels are often not maintained in a timely manner, and there are safety risks such as unstable roof slabs and poor ventilation. In order to prevent people from mistakenly entering the out-of-service tunnels, safety isolation and protection facilities are usually required.

[0003] Existing isolation methods include fixed iron guardrails on both sides of the lane, mobile guardrails, steel mesh warnings, closed walls and cordons, etc. These methods have the following problems: although the fixed iron guardrails and closed walls on both sides are tightly sealed, they are difficult to dismantle and the materials are difficult to reuse; although the mobile guardrails are easy to dismantle and reuse, they are not tightly protected, the structure is not strong, and they are easily damaged, resulting in increased costs; the steel mesh and cordon have low protection strength and are easily damaged by impact. Summary of the invention

[0004] The present application provides a safety isolation guardrail for an underground mine tunnel and an installation method thereof to solve the problems in the prior art, such as difficulty in dismantling, loose protection, loose structure, easy damage, etc. At the same time, it has the beneficial effects of simple production, safety and reliability, tight protection, not easy to damage, convenient on-site disassembly and assembly, small size for easy transportation, and reusability.

[0005] In order to achieve the above technical objectives, the technical solution adopted in the present application is a safety isolation guardrail for a mine tunnel and its installation method, comprising four fixed supports, two cross bars, a plurality of vertical bars and a plurality of bolts; the fixed supports are fixedly connected to the ends of the cross bars, the vertical bars are arranged between the two cross bars, and the two ends of the vertical bars are respectively fixedly connected to the rod bodies of the two cross bars; the fixed supports are composed of two square steel plates to form a T-shaped structure, one of which is a square steel plate as the upper structure of the T-shaped structure, and the other is a square steel plate as the lower structure of the T-shaped structure; the square steel plates as the lower structure One end of the plate is fixedly connected to the middle of another square steel plate serving as the upper structure; a plurality of bolt holes penetrating the square steel plate are arranged on the fixed support; the cross bar comprises a left cross bar and a right cross bar, and the left cross bar and the right cross bar are detachably connected; a plurality of penetrating bolt holes are arranged at equal intervals on the left cross bar and the right cross bar, and a rectangular hole groove is arranged at one end; penetrating bolt holes are arranged at both ends of the vertical bar for connecting with the cross bar; the bolts comprise expansion bolts and ordinary bolts, the expansion bolts are used to fix the fixed support on the side wall of the tunnel, and the ordinary bolts are used to fix the various components to each other.

[0006] Further, based on the above core technical solution, the fixed support is a T-shaped structure composed of a large square steel plate and a small square steel plate; the large square steel plate is used as the upper structure of the T-shape, and bolt holes are set at the four corners for fixing the fixed support to the side wall of the tunnel in combination with expansion bolts; the small square steel plate is used as the lower structure of the T-shape, and bolt holes are set in the middle for fixing the fixed support to the crossbar in combination with ordinary bolts. Further, the side length of the large square steel plate is 150mm and the thickness is 8-10mm; further, the side length of the small square steel plate is 100mm and the thickness is 8-10mm.

[0007] Furthermore, based on the above core technical solution, the length of the rectangular hole grooves of the left cross bar and the right cross bar is 100-200 mm, and the distance between the two long sides of the rectangular hole groove matches the diameter of the ordinary bolt.

[0008] Furthermore, based on the above core technical solution, the materials of the horizontal rod and the vertical rod are both steel.

[0009] Furthermore, based on the above core technical solution, the spacing between the multiple bolt holes on the left cross bar and the right cross bar ranges from 250 to 500 mm.

[0010] The installation method of a mine tunnel safety isolation guardrail applied to any one of the above core technical solutions is as follows:

[0011] The first step is to measure and confirm the specific installation positions of the four fixed supports on the side walls of the tunnel according to the specific locations where the safety isolation guardrail needs to be installed in the tunnel underground;

[0012] The second step is to use expansion bolts to fix the fixed support closely to the side wall of the tunnel, and align and install four fixed supports on both sides of the tunnel;

[0013] The third step is to adjust the relative positions of the left and right crossbars of the crossbar according to the actual spacing between the side walls of the laneway, and use ordinary bolts in conjunction with the bolt holes to fix the left and right crossbars together to form two crossbars of appropriate length;

[0014] Step 4: Place the two crossbars in parallel on four fixed supports, and use ordinary bolts to pass through the rectangular holes to fix them;

[0015] Step 5: Use ordinary bolts in conjunction with the bolt holes to securely connect the multiple vertical bars to the two horizontal bars.

[0016] Furthermore, based on the above technical solution, in the fifth step, the vertical rods are installed in pairs in a cross manner.

[0017] Beneficial Effects

[0018] It can be seen from the above technical solutions that the technical solution of the present invention provides a mine underground tunnel safety isolation guardrail and an installation method thereof.

[0019] Regarding the design of the fixed support, the fixed support is a T-shaped structure composed of two square steel plates, one end of which is fixedly connected to the middle of the other square steel plate. This design is not only simple in structure, but also fixed to the side wall of the tunnel by expansion bolts, ensuring the stability and reliability of the fixed support. There are multiple bolt holes on the fixed support. The four corners of the large square steel plate are provided with bolt holes for fixing the fixed support to the side wall of the tunnel in combination with expansion bolts; the middle of the small square steel plate is provided with bolt holes for fixing the fixed support to the crossbar in combination with ordinary bolts. This design ensures the firm installation of the fixed support and improves the stability of the overall structure. The side length of the large square steel plate is 150mm and the thickness is 8-10mm; the side length of the small square steel plate is 100mm and the thickness is 8-10mm. The selection of these sizes and thicknesses ensures the strength and durability of the fixed support, while facilitating standardized production and installation.

[0020] Regarding the design of the crossbar, the crossbar includes a left crossbar and a right crossbar, on which multiple bolt holes are arranged at equal intervals, and a rectangular hole slot is arranged at one end. This design allows the crossbar to be adjusted according to the actual width of the laneway, making it more adaptable. The length of the rectangular hole slot is 100-200mm, and the spacing between the two long sides matches the diameter of ordinary bolts. This design not only facilitates the installation and adjustment of the crossbar, but also improves the flexibility and convenience of installation. The spacing between multiple bolt holes on the left and right crossbars ranges from 250-500mm; this design ensures the connection strength of the guardrail, while reducing the use of materials and reducing costs.

[0021] Regarding the design of the vertical rod, bolt holes are set at both ends of the vertical rod for connection with the cross rod. This design ensures that the vertical rod and the cross rod are firmly connected and improves the stability of the overall structure. The vertical rods are installed in pairs and crosswise. This design not only enhances the overall stability of the guardrail, but also effectively prevents people from passing through and improves the protection effect.

[0022] The bolts include expansion bolts and ordinary bolts. The expansion bolts are used to fix the fixed support to the side wall of the tunnel, and the ordinary bolts are used to fix the various components to each other. This design ensures that the guardrail is installed firmly and improves the stability of the overall structure.

[0023] Regarding the installation method, the specific installation method includes five steps, from measuring and confirming the installation position of the fixed support, to using expansion bolts to fix the support, to adjusting the position of the crossbar, fixing the crossbar and vertical bar, each step is clear and easy to operate. The rectangular hole slot design of the crossbar allows for fine-tuning according to the actual width of the lane during installation, ensuring that the installation of the guardrail fits the lane structure better.

[0024] The material of the horizontal and vertical bars is steel, which has high strength and corrosion resistance. It can effectively resist the erosion of the harsh environment in the mine and extend the service life of the guardrail.

[0025] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered to be part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0026] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, in which:

[0028] Figure 1 A diagram showing the effect of the present invention after installation is completed;

[0029] Figure 2 A schematic structural diagram of a fixed support and an expansion bolt in the present invention is shown.

[0030] In the figure, 1. fixed support; 2. cross bar; 3. left cross bar; 4. right cross bar; 5. vertical bar; 6. expansion bolt; 7. large square steel plate; 8. small square steel plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0032] Technical principle description:

[0033] The mine tunnel safety isolation guardrail and its installation method of the present invention are mainly based on two major technical principles: structural stability and material selection. The fixed support 1 adopts a T-shaped structure, which is composed of two square steel plates and is tightly fixed to the side wall of the tunnel by expansion bolts 6, ensuring the stability and reliability of the support. The crossbar 2 and the vertical bar 5 are connected by bolts to form an integral structure. The rectangular hole groove design on the crossbar 2 allows fine-tuning according to the actual width of the tunnel during installation to ensure that the installation of the guardrail fits the tunnel structure better. The vertical bars 5 are installed in a two-by-two cross manner, which enhances the overall stability of the guardrail and effectively prevents people from passing through. In addition, the crossbar 2 and the vertical bar 5 are made of steel, which has high strength and corrosion resistance, can effectively resist the erosion of the harsh environment under the mine, and extend the service life of the guardrail.

[0034] Technical solution description:

[0035] A safety isolation guardrail for a mine tunnel and its installation method, comprising four fixed supports 1, two cross bars 2, a plurality of vertical bars 5 and a plurality of bolts; the fixed support 1 is fixedly connected to the ends of the cross bars 2, the vertical bar 5 is arranged between the two cross bars 2, and the two ends of the vertical bar 5 are respectively fixedly connected to the rod bodies of the two cross bars 2; the fixed support 1 is composed of two square steel plates to form a T-shaped structure; one of the square steel plates serves as the upper structure of the T-shaped structure, and the other square steel plate serves as the lower structure of the T-shaped structure; one end of the square steel plate serving as the lower structure is connected to the other end of the square steel plate serving as the lower structure. The middle part of the square steel plate as the upper structure is fixedly connected; the fixed support 1 is provided with a plurality of bolt holes penetrating the square steel plate; the crossbar 2 includes a left crossbar 3 and a right crossbar 4, and the left crossbar 3 and the right crossbar 4 are detachable; the left crossbar 3 and the right crossbar 4 are provided with a plurality of bolt holes at equal intervals, and a rectangular hole groove is provided at one end; the two ends of the vertical bar 5 are provided with bolt holes for connecting with the crossbar 2; the bolts include expansion bolts 6 and ordinary bolts, the expansion bolts 6 are used to fix the fixed support 1 on the side wall of the tunnel, and the ordinary bolts are used to fix the various components to each other. The specific installation method is as follows:

[0036] The first step is to measure and confirm the specific installation positions of the four fixed supports 1 on the side walls of the tunnel according to the specific positions where the safety isolation guardrail needs to be installed in the tunnel under the mine;

[0037] The second step is to use expansion bolts 6 to fix the fixed support 1 closely to the side wall of the tunnel, and align and install four fixed supports 1 on both sides of the tunnel;

[0038] The third step is to adjust the relative positions of the left crossbar 3 and the right crossbar 4 of the crossbar 2 according to the actual spacing between the side walls of the laneway, and use ordinary bolts to match the bolt holes to fix the left crossbar 3 and the right crossbar 4 to form two crossbars 2 of appropriate length;

[0039] Step 4: Place two cross bars 2 in parallel and on four fixed supports 1, and use common bolts to pass through the rectangular holes for fixed connection;

[0040] Step 5: Use common bolts in conjunction with the bolt holes to securely connect the plurality of vertical rods 5 to the two horizontal rods 2.

[0041] Embodiment 1:

[0042] like Figure 1 , Figure 2As shown, a safety isolation guardrail for a mine tunnel and its installation method include four fixed supports 1, two cross bars 2, multiple vertical bars 5 and multiple bolts; the fixed support 1 is fixedly connected to the end of the cross bar 2, the vertical bar 5 is arranged between the two cross bars 2, and the two ends of the vertical bar 5 are respectively fixedly connected to the rod body of the two cross bars 2; the fixed support 1 is composed of a large square steel plate 7 and a small square steel plate 8 to form a T-shaped structure; wherein the large square steel plate 7 serves as the upper structure of the T-shaped structure, and wherein the small square steel plate 8 serves as the lower structure of the T-shaped structure; one end of the small square steel plate 8 is fixedly connected to the middle part of the large square steel plate 7; the four corners of the large square steel plate 7 are provided with bolt holes penetrating the steel plate, which are used to fix the fixed support 1 to the side wall of the tunnel in combination with expansion bolts 6; the small square steel plate 8 serves as the lower structure of the T-shape, and a bolt hole penetrating the steel plate is provided in the middle, which is used to fix the fixed support 1 to the cross bar 2 in combination with ordinary bolts. The side length of the large square steel plate 7 is 150mm, and the thickness is 8-10mm; the side length of the small square steel plate 8 is 100mm, and the thickness is 8-10mm. The crossbar 2 includes a left crossbar 3 and a right crossbar 4, and the left crossbar 3 and the right crossbar 4 are detachable connection methods; a plurality of through bolt holes are evenly spaced on the left crossbar 3 and the right crossbar 4, and the spacing range of the plurality of bolt holes is 250-500mm; a rectangular hole groove is provided at one end of the left crossbar 3 and the right crossbar 4, and the length of the rectangular hole groove is 100-200mm, and the spacing between the two long sides of the rectangular hole groove matches the diameter of the ordinary bolt; the material of the crossbar 2 and the vertical bar 5 are both steel. Through bolt holes are provided at both ends of the vertical bar 5 for connection with the crossbar 2; the bolts include expansion bolts 6 and ordinary bolts, the expansion bolts 6 are used to fix the fixed support 1 on the side wall of the tunnel, and the ordinary bolts are used to fix the various components to each other. The specific installation method is as follows:

[0043] The first step is to measure and confirm the specific installation positions of the four fixed supports 1 on the side walls of the tunnel according to the specific positions where the safety isolation guardrail needs to be installed in the tunnel under the mine;

[0044] The second step is to use expansion bolts 6 to fix the fixed support 1 closely to the side wall of the tunnel, and align and install four fixed supports 1 on both sides of the tunnel;

[0045] The third step is to adjust the relative positions of the left crossbar 3 and the right crossbar 4 of the crossbar 2 according to the actual spacing between the side walls of the laneway, and use ordinary bolts to match the bolt holes to fix the left crossbar 3 and the right crossbar 4 to form two crossbars 2 of appropriate length;

[0046] Step 4: Place two cross bars 2 in parallel and on four fixed supports 1, and use common bolts to pass through the rectangular holes for fixed connection;

[0047] Step 5: Use common bolts in conjunction with the bolt holes to fix the plurality of vertical bars 5 to the two horizontal bars 2; the vertical bars 5 are installed in pairs in a cross manner.

[0048] The fixed support 1 is a T-shaped structure composed of two square steel plates, one end of which is fixedly connected to the middle of the other square steel plate. This design is not only simple in structure, but also fixed to the side wall of the tunnel by expansion bolts 6, ensuring the stability and reliability of the fixed support 1. A plurality of bolt holes are provided on the fixed support 1. Bolt holes are provided at the four corners of the large square steel plate 7, which are used to fix the fixed support 1 to the side wall of the tunnel in combination with the expansion bolts 6; bolt holes are provided in the middle of the small square steel plate 8, which are used to fix the fixed support 1 to the crossbar 2 in combination with ordinary bolts. This design ensures that the fixed support 1 is firmly installed and improves the stability of the overall structure. The side length of the large square steel plate 7 is 150mm and the thickness is 8-10mm; the side length of the small square steel plate 8 is 100mm and the thickness is 8-10mm. The selection of these sizes and thicknesses ensures the strength and durability of the fixed support 1, while facilitating standardized production and installation.

[0049] The crossbar 2 includes a left crossbar 3 and a right crossbar 4, on which a plurality of bolt holes are arranged at equal intervals, and a rectangular hole slot is arranged at one end. This design allows the crossbar 2 to be adjusted according to the actual width of the lane, and is more adaptable. The length of the rectangular hole slot is 100-200mm, and the spacing between the two long sides matches the diameter of the ordinary bolt. This design not only facilitates the installation and adjustment of the crossbar 2, but also improves the flexibility and convenience of installation. The spacing range of the plurality of bolt holes on the left crossbar 3 and the right crossbar 4 is 250-500mm; this design ensures the connection strength of the guardrail, while reducing the use of materials and reducing costs. Bolt holes are arranged at both ends of the vertical bar 5 for connection with the crossbar 2. This design ensures that the vertical bar 5 is firmly connected to the crossbar 2 and improves the stability of the overall structure. The vertical bars 5 are installed in a two-by-two cross manner. This design not only enhances the overall stability of the guardrail, but also effectively prevents people from passing through, thereby improving the protection effect. The expansion bolt 6 is used to fix the fixed support 1 on the side wall of the lane, and the ordinary bolt is used to fix the various components to each other. This design ensures that the guardrail is firmly installed and improves the stability of the overall structure.

[0050] The specific installation method includes five steps, from measuring and confirming the installation position of the fixed support 1, to fixing the support 1 with the expansion bolt 6, to adjusting the position of the crossbar 2, fixing the crossbar 2 and the vertical bar 5. Each step is clear and easy to operate. The rectangular hole slot design of the crossbar 2 allows fine-tuning according to the actual width of the tunnel during installation to ensure that the installation of the guardrail fits the tunnel structure better. The crossbar 2 and the vertical bar 5 are both made of steel, which has high strength and corrosion resistance, can effectively resist the erosion of the harsh environment in the mine, and extend the service life of the guardrail.

[0051] This embodiment provides a safety isolation guardrail for underground mine tunnels and its installation method, which realizes efficient and reliable tunnel isolation and protection functions by rationally designing the structure and connection method of the fixed support 1, the crossbar 2 and the vertical bar 5. It solves the problems in the prior art, such as difficult to dismantle, loose protection, loose structure, easy to damage, etc., and has the advantages of simple production, safety and reliability, tight protection, not easy to damage, convenient on-site disassembly and assembly, small size for easy transportation and reusability.

[0052] Embodiment 2:

[0053] The difference between this embodiment and the first embodiment is that in the "fifth step", the vertical rod 5 is installed in a vertical parallel manner, as follows:

[0054] A safety isolation guardrail for a mine tunnel and an installation method thereof, comprising four fixed supports 1, two cross bars 2, a plurality of vertical bars 5 and a plurality of bolts; the fixed support 1 is fixedly connected to the ends of the cross bars 2, the vertical bar 5 is arranged between the two cross bars 2, and the two ends of the vertical bar 5 are respectively fixedly connected to the rod bodies of the two cross bars 2; the fixed support 1 is composed of a large square steel plate 7 and a small square steel plate 8 to form a T-shaped structure; wherein the large square steel plate 7 serves as the upper structure of the T-shaped structure, and wherein the small square steel plate 8 serves as the lower structure of the T-shaped structure; one end of the small square steel plate 8 is fixedly connected to the middle part of the large square steel plate 7; the four corners of the large square steel plate 7 are provided with bolt holes penetrating the steel plate, which are used to fix the fixed support 1 to the side wall of the tunnel in combination with expansion bolts 6; the small square steel plate 8 serves as the lower structure of the T-shape, and a penetrating bolt hole is provided in the middle, which is used to fix the fixed support 1 to the cross bar 2 in combination with ordinary bolts. The side length of the large square steel plate 7 is 150mm, and the thickness is 8-10mm; the side length of the small square steel plate 8 is 100mm, and the thickness is 8-10mm. The crossbar 2 includes a left crossbar 3 and a right crossbar 4; a plurality of through bolt holes are evenly spaced on the left crossbar 3 and the right crossbar 4, and the spacing range of the plurality of bolt holes is 250-500mm; a rectangular hole groove is provided at one end of the left crossbar 3 and the right crossbar 4, and the length of the rectangular hole groove is 100-200mm, and the spacing between the two long sides of the rectangular hole groove matches the diameter of the ordinary bolt; the material of the crossbar 2 and the vertical bar 5 are both steel. Through bolt holes are provided at both ends of the vertical bar 5 for connection with the crossbar 2; the bolts include expansion bolts 6 and ordinary bolts, the expansion bolts 6 are used to fix the fixed support 1 on the side wall of the tunnel, and the ordinary bolts are used to fix the various components to each other. The specific installation method is as follows:

[0055] The first step is to measure and confirm the specific installation positions of the four fixed supports 1 on the side walls of the tunnel according to the specific positions where the safety isolation guardrail needs to be installed in the tunnel under the mine;

[0056] The second step is to use expansion bolts 6 to fix the fixed support 1 closely to the side wall of the tunnel, and align and install four fixed supports 1 on both sides of the tunnel;

[0057] The third step is to adjust the relative positions of the left crossbar 3 and the right crossbar 4 of the crossbar 2 according to the actual spacing between the side walls of the laneway, and use ordinary bolts to match the bolt holes to fix the left crossbar 3 and the right crossbar 4 to form two crossbars 2 of appropriate length;

[0058] Step 4: Place two cross bars 2 in parallel and on four fixed supports 1, and use common bolts to pass through the rectangular holes for fixed connection;

[0059] Step 5: Use common bolts in conjunction with the bolt holes to fix the plurality of vertical rods 5 to the two horizontal rods 2; the vertical rods 5 are installed in a vertical and parallel manner.

[0060] The fixed support 1 is a T-shaped structure composed of two square steel plates, one end of which is fixedly connected to the middle of the other square steel plate. This design is not only simple in structure, but also fixed to the side wall of the tunnel by expansion bolts 6, ensuring the stability and reliability of the fixed support 1. A plurality of bolt holes are provided on the fixed support 1. Bolt holes are provided at the four corners of the large square steel plate 7, which are used to fix the fixed support 1 to the side wall of the tunnel in combination with the expansion bolts 6; bolt holes are provided in the middle of the small square steel plate 8, which are used to fix the fixed support 1 to the crossbar 2 in combination with ordinary bolts. This design ensures that the fixed support 1 is firmly installed and improves the stability of the overall structure. The side length of the large square steel plate 7 is 150mm and the thickness is 8-10mm; the side length of the small square steel plate 8 is 100mm and the thickness is 8-10mm. The selection of these sizes and thicknesses ensures the strength and durability of the fixed support 1, while facilitating standardized production and installation.

[0061] The crossbar 2 includes a left crossbar 3 and a right crossbar 4, on which a plurality of bolt holes are arranged at equal intervals, and a rectangular hole slot is arranged at one end. This design allows the crossbar 2 to be adjusted according to the actual width of the lane, and is more adaptable. The length of the rectangular hole slot is 100-200mm, and the spacing between the two long sides matches the diameter of the ordinary bolt. This design not only facilitates the installation and adjustment of the crossbar 2, but also improves the flexibility and convenience of installation. The spacing range of the plurality of bolt holes on the left crossbar 3 and the right crossbar 4 is 250-500mm; this design ensures the connection strength of the guardrail, while reducing the use of materials and reducing costs. Bolt holes are arranged at both ends of the vertical bar 5 for connection with the crossbar 2. This design ensures that the vertical bar 5 is firmly connected to the crossbar 2 and improves the stability of the overall structure. The vertical bar 5 is installed in a vertical parallel manner, which has a good protective effect and also enhances the overall stability of the guardrail. The expansion bolt 6 is used to fix the fixed support 1 on the side wall of the lane, and the ordinary bolt is used to fix the various components to each other. This design ensures that the guardrail is firmly installed and improves the stability of the overall structure.

[0062] The specific installation method includes five steps, from measuring and confirming the installation position of the fixed support 1, to fixing the support 1 with the expansion bolt 6, to adjusting the position of the crossbar 2, fixing the crossbar 2 and the vertical bar 5. Each step is clear and easy to operate. The rectangular hole slot design of the crossbar 2 allows fine-tuning according to the actual width of the tunnel during installation to ensure that the installation of the guardrail fits the tunnel structure better. The crossbar 2 and the vertical bar 5 are both made of steel, which has high strength and corrosion resistance, can effectively resist the erosion of the harsh environment in the mine, and extend the service life of the guardrail.

[0063] This embodiment provides a safety isolation guardrail for underground mine tunnels and its installation method, which realizes efficient and reliable tunnel isolation and protection functions by rationally designing the structure and connection method of the fixed support 1, the crossbar 2 and the vertical bar 5. It solves the problems in the prior art, such as difficult to dismantle, loose protection, loose structure, easy to damage, etc., and has the advantages of simple production, safety and reliability, tight protection, not easy to damage, convenient on-site disassembly and assembly, small size for easy transportation and reusability.

[0064] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A safety isolation guardrail for a mine tunnel, comprising four fixed supports (1), two cross bars (2), a plurality of vertical bars (5) and a plurality of bolts; the fixed supports (1) are fixedly connected to the ends of the cross bars (2), the vertical bars (5) are arranged between the two cross bars (2), and the two ends of the vertical bars (5) are respectively fixedly connected to the rod bodies of the two cross bars (2); characterized in that: The fixed support (1) is composed of two square steel plates to form a T-shaped structure; one of the square steel plates serves as the upper structure of the T-shaped structure, and the other square steel plate serves as the lower structure of the T-shaped structure; one end of the square steel plate serving as the lower structure is fixedly connected to the middle of the other square steel plate serving as the upper structure; the fixed support (1) is provided with a plurality of bolt holes penetrating the square steel plates; the cross bar (2) comprises a left cross bar (3) and a right cross bar ( 4), the left cross bar (3) and the right cross bar (4) are connected in a detachable manner, and a plurality of through bolt holes are arranged at equal intervals on the left cross bar (3) and the right cross bar (4), and a rectangular hole groove is arranged at one end; through bolt holes are arranged at both ends of the vertical bar (5) for connecting with the cross bar (2); the bolts include expansion bolts (6) and ordinary bolts, the expansion bolts (6) are used to fix the fixed support (1) on the side wall of the tunnel, and the ordinary bolts are used to fix the various components to each other.

2. A mine tunnel safety isolation guardrail according to claim 1, characterized in that: The fixed support (1) is a T-shaped structure composed of a large square steel plate (7) and a small square steel plate (8); the large square steel plate (7) serves as the upper structure of the T-shape, and is provided with bolt holes at four corners for fixing the fixed support (1) to the side wall of the tunnel in combination with the expansion bolts (6); the small square steel plate (8) serves as the lower structure of the T-shape, and is provided with bolt holes in the middle for fixing the fixed support (1) to the cross bar (2) in combination with the ordinary bolts.

3. A mine tunnel safety isolation guardrail according to claim 2, characterized in that: The side length of the large square steel plate (7) is 150 mm and the thickness is 8-10 mm.

4. A safety isolation guardrail for underground mine tunnels according to claim 2, characterized in that: The side length of the small square steel plate (8) is 100 mm and the thickness is 8-10 mm.

5. The safety isolation guardrail for underground mine tunnels according to claim 1 is characterized by: The length of the rectangular hole grooves of the left cross bar (3) and the right cross bar (4) is 100-200 mm, and the distance between the two long sides of the rectangular hole grooves matches the diameter of the common bolts.

6. The safety isolation guardrail for underground mine tunnels according to claim 1 is characterized by: The cross bar (2) and the vertical bar (5) are both made of steel.

7. The safety isolation guardrail for underground mine tunnels according to claim 1 is characterized by: The spacing between the plurality of bolt holes on the left cross bar (3) and the right cross bar (4) is in the range of 250-500 mm.

8. A method for installing a safety isolation guardrail for a mine tunnel as claimed in any one of claims 1 to 7, characterized in that: The specific installation steps are: The first step is to measure and confirm the specific installation positions of the four fixed supports (1) on the side walls of the tunnel according to the specific locations where the safety isolation guardrail needs to be installed in the tunnel under the mine; The second step is to use the expansion bolts (6) to fix the fixed support (1) closely to the side wall of the lane, and align and install four fixed supports (1) on both sides of the lane; The third step is to adjust the relative positions of the left cross bar (3) and the right cross bar (4) of the cross bar (2) according to the actual spacing between the side walls of the laneway, and use the ordinary bolts to match the bolt holes to fix the left cross bar (3) and the right cross bar (4) to form two cross bars (2) of appropriate length; The fourth step is to place the two cross bars (2) in parallel and correspondingly on the four fixed supports (1), and use the common bolts to pass through the rectangular holes for fixed connection; The fifth step is to use the common bolts in conjunction with the bolt holes to fix the plurality of vertical rods (5) and the two horizontal rods (2) together.

9. The installation method of the safety isolation guardrail of a mine tunnel according to claim 8 is characterized by: In the fifth step, the vertical rods (5) are installed in pairs in a cross manner.

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