Non-metal mine support

Abstract

A non-metal mine support comprises a protective net formed by a plurality of warp-wise belts and weft-wise belts in a warp-weft staggered mode. A plurality of longitudinal reinforcing ribs are arranged on the protective net, the reinforcing ribs are arranged at equal intervals, the interval between every two adjacent reinforcing ribs is 0.5-1 meter, and a reinforcing joint is further arranged between every two adjacent reinforcing ribs. Each reinforcing section comprises two bridles which are arranged in a crossed mode. The two bridles are in a crossed shape, and the two ends of each bridle are connected with the two adjacent reinforcing ribs respectively. The reinforcing section further comprises a connecting piece arranged at the intersection of the two bridles. The cable is integrally firm and soft, light in weight, resistant to acid and alkali, not prone to aging, low in cost, long in service life, high in tensile strength and deformation strength in all directions, high in strength, flame-retardant, anti-static and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of protective nets, in particular to a support for non-metal mines. Background Technique

[0002] The coal mine support net is a structural material used for supporting roadways and preventing rock strata from collapsing during the underground coal mining process, and plays a role in fixing rock strata, preventing collapse, and protecting the safety of miners in coal mine engineering. The patent document with the application number CN201921882964.8 discloses a rigid support net for mines, which includes a warp knitting net body and a coating body arranged to wrap the warp knitting net. The warp knitting net body includes radial lines and weft lines, and sewing lines are arranged at the connection parts of the radial lines and the weft lines. The patent document with the application number CN202222966490.3 discloses a rigid support net for coal mine roadways, which includes a plurality of longitudinal strips and transverse strips. Both the longitudinal strips and the transverse strips are strip structures with a certain width. The longitudinal strips and the transverse strips are interlaced with each other to form a grid-shaped grille, and the longitudinal strips and the transverse strips are fixedly connected by welding at the intersection of the two. The net bodies in the above two patent documents are both formed by the intersection of warp belts and weft belts of the same specification, and only have high tensile strength in the warp and weft directions, and the anti-deformation ability is relatively low. Moreover, the situation in the mine is complex, and the stress conditions at different support points are also different. Therefore, the net bodies in the above two patent documents lack strengthening measures, and insufficient strength will cause damage to the support net. Content of the Utility Model

[0003] In order to solve the technical problem that the support net in the above background technique lacks a strengthening structure and has low strength, the utility model provides a support for non-metal mines.

[0004] The technical solution of the utility model is as follows:

[0005] A support for non-metal mines includes a protective net formed by the intersection of a plurality of longitudinal belts and transverse belts; a plurality of longitudinal strengthening ribs are provided on the protective net, and the plurality of strengthening ribs are equidistantly arranged with an interval of 0.5 - 1 meter, and strengthening nodes are also provided between two adjacent strengthening ribs. The strengthening node includes two cross-shaped straps, the two straps are in a cross shape and the two ends are respectively connected to two adjacent strengthening ribs; the strengthening node also includes a connecting piece arranged at the intersection of the two straps. Adding longitudinal strengthening ribs to the protective net greatly enhances the support strength for roadways and working faces. At the same time, the straps between the strengthening ribs can not only enhance the connection between the strengthening ribs, but also improve the tensile strength of the overall structure in different directions. To ensure the integrity between the two straps, a connecting piece is arranged at the intersection of the two straps, which can not only expand the stress area, enhance the tensile strength and anti-deformation ability in each direction, but also provide a larger bearing area for bolts or fixing nails when additional fixing points are needed.

[0006] To further enhance the overall support strength, a number of reinforcing joints are arranged at intervals along the length direction of the reinforcing ribs, and the number of reinforcing joints is arranged at equal intervals.

[0007] Preferably, a number of the weft bands are arranged at equal intervals to ensure the stability and balanced load-bearing capacity of the wire mesh structure in the warp direction of support, avoid the situation of too low load-bearing capacity, and thus improve the construction efficiency and project quality.

[0008] Further preferably, a number of the warp bands are arranged at equal intervals to ensure the stability and balanced load-bearing capacity of the wire mesh structure in the weft direction of support, avoid the situation of too low load-bearing capacity, and thus improve the construction efficiency and project quality.

[0009] As a preferred embodiment, the weft bands, warp bands and binding bands have the same width, which can not only ensure the stability and balance of the wire mesh structure in all directions, but also reduce material waste, unify the specifications for convenient production and avoid repeated processes.

[0010] The strength of the reinforcing rib is greater than that of the warp band to ensure that it can play an adequate strengthening role and avoid waste of materials at the same time. The width of the reinforcing rib is 3-5 times that of the warp band, which can not only ensure the strength, but also avoid material waste and a significant increase in the overall weight caused by the too wide reinforcing rib.

[0011] Furthermore, the warp band and the weft band are not coplanar, and the reinforcing rib is arranged coplanarly with the warp band. When the warp band and the weft band intersect, neither of them will bend, which is beneficial to maintaining the stability of their tensile strength. The reinforcing rib and the warp band are arranged coplanarly, which is beneficial to improving the integrity and connectivity of the structure, emphasizing its role of strengthening in the warp direction, and it is also convenient for production and manufacturing, improving efficiency.

[0012] Preferably, for the above-mentioned non-metallic mine support, its warp width is 3-6 meters, which is suitable for most roadway sizes, convenient for laying and lapping. When in use, the width can be selected according to specific requirements and application scenarios, with a large selection range and high flexibility, and the mesh is convenient for storage and movement.

[0013] Specifically, the materials of the wire mesh, reinforcing rib and reinforcing joint are all high molecular composite materials, which have properties such as high strength, light weight, temperature resistance, corrosion resistance, heat insulation, insulation, etc., are not easy to age, have low cost and long service life.

[0014] As a preferred embodiment, the surfaces of the weft band, warp band and reinforcing rib are all coated with a layer of flame-retardant and antistatic coating. When it is used as a false roof for thick coal seam slicing mining, the shearer can directly crush it without generating sparks, reducing the occurrence of fires and gas explosions.

[0015] Through the above design, the beneficial effects of the non-metallic mine support of the present utility model are as follows:

[0016] 1), It is integrally firm and flexible, light in weight, acid and alkali resistant, not easy to age, low in cost, long in service life, high in tensile and anti-deformation strength in all directions, and has properties such as high strength, flame retardancy, and antistatic.

[0017] 2), By adding radial reinforcing ribs to the protective net, the support strength for the roadway and the working face is greatly enhanced.

[0018] 3), Through the setting of the strengthening joints, the tensile strength and anti-deformation ability of the overall structure in all directions are improved. Moreover, the setting of the connecting pieces can not only increase the stress area and enhance the strength in all directions of the strengthening joints, but also provide a larger bearing area for bolts or fixing nails when additional fixing points are needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the drawings:

[0020] Figure 1 is a front view of a non-metallic mine support;

[0021] Figure 2 is a sectional view of the structure of a non-metallic mine support;

[0022] Figure 3 is Figure 1 the enlarged view at A in

[0023] Figure 4 is a schematic structural diagram of another embodiment of the connecting piece;

[0024] The components represented by the reference numerals in the drawings are:

[0025] 1, protective net; 11, weft band; 12, warp band; 2, reinforcing rib; 3, strengthening joint; 31, binding band; 32, connecting piece; 4, connecting rope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Embodiment

[0027] Combined with Figure 1 and Figure 4 , this embodiment provides a non-metallic mine support, including a protective net 1 formed by the interlacing of a plurality of warp bands 12 and weft bands 11.

[0028] Preferably, a plurality of the weft bands 11 are arranged at equal intervals to ensure the stability of the structure of the protective net 1 in the radial support and the balanced bearing capacity, avoid the situation of too low bearing capacity, and thus improve the construction efficiency and project quality.

[0029] Further preferably, several of the warp bands 12 are arranged at equal intervals to ensure the stability of the net protection structure 1 in the weft direction and the balanced load-bearing capacity, avoiding the situation of too low bearing capacity, thereby improving the construction efficiency and project quality.

[0030] Furthermore, the warp bands 12 and the weft bands 11 are not coplanar, and the warp bands 12 and the weft bands 11 will not bend and deform when intersecting, which is beneficial to maintaining the stability of their tensile strength.

[0031] In this embodiment, several warp reinforcing ribs 2 are provided on the net protection 1, and several of the reinforcing ribs 2 are arranged at equal intervals and spaced 0.5 - 1 meter apart.

[0032] The strength of the reinforcing rib 2 is greater than that of the warp band 12 to ensure that it can play an adequate strengthening role while avoiding waste of materials. The width of the reinforcing rib 2 is 3 - 5 times the width of the warp band 12, which can not only ensure the strength but also avoid waste of materials and a significant increase in the overall weight caused by the too wide reinforcing rib 2.

[0033] Furthermore, the reinforcing rib 2 and the warp band 12 are arranged coplanarly, which is beneficial to improving the integrity and connectivity of the structure, emphasizing its role in warp direction strengthening, and the coplanarity of the reinforcing rib 2 and the warp band 12 is convenient for production and manufacturing, improving efficiency.

[0034] As a preferred implementation method, a flame-retardant and antistatic coating is covered on the surfaces of the weft band 11, the warp band 12 and the reinforcing rib 2. When it is used as a false roof for thick coal seam slicing mining, the shearer can directly crush it without generating sparks, reducing the occurrence of fires and gas explosions.

[0035] In this embodiment, a reinforcing joint 3 is further provided between two adjacent reinforcing ribs 2.

[0036] Specifically, the materials of the net protection 1, the reinforcing rib 2 and the reinforcing joint 3 are all high molecular composite materials, which have properties such as high strength, light weight, heat resistance, corrosion resistance, heat insulation, insulation, etc., are not easy to age, have low cost and long service life.

[0037] Exemplarily, the net protection 1, the reinforcing rib 2 and the reinforcing joint 3 are made of high modulus and high strength industrial polyester filaments. Under the same technical index requirements and strength, the price of high modulus and high strength industrial polyester filaments is not higher than that of metal wires, and the economic benefits are obvious.

[0038] To further enhance the overall support strength, several reinforcing joints 3 are arranged at intervals along the length direction of the reinforcing rib 2, and several reinforcing joints 3 are arranged at equal intervals. The two adjacent reinforcing joints 3 in the weft direction can be arranged in a staggered manner to enhance the uniformity of the distribution of the reinforcing joints. Moreover, the number of the reinforcing joints 3 along the length direction of the warp band 12 can be set according to specific requirements, with strong flexibility.

[0039] In a specific implementation, the reinforcement node 3 is located on the side of the reinforcement rib 2 away from the weft belt 11, which facilitates the connection between the reinforcement node 3 and the reinforcement rib 2 and the warp belt 12, and the reinforcement node 3 is flat as a whole and does not need to be bent.

[0040] In this embodiment, the reinforcement section 3 includes two cross-arranged straps 31 , the two straps 31 are cross-shaped and the two ends of the two straps 31 are respectively connected to two adjacent reinforcement ribs 2 .

[0041] Exemplarily, the strap 31 is cross-sewn with the warp belt 12 and the reinforcing ribs 2 through a polyester fiber connecting rope 4 to strengthen the connection strength and improve the overall tensile and deformation resistance.

[0042] As a preferred embodiment, the widths of the weft band 11, the warp band 12 and the tie band 31 are consistent, which can not only ensure the stability and balance of the protective net 1 structure in all directions, but also reduce material waste, unify specifications to facilitate production, and avoid repeated processes.

[0043] Reference Figure 3 The reinforcement section 3 also includes a connecting piece 32 arranged at the intersection of the two straps 31. The diameter of the connecting piece 32 is not less than 1 / 4 of the distance between two adjacent reinforcing ribs 2 to ensure that it has sufficient force-bearing area and connection range.

[0044] In a specific implementation, the warp belt 12, the drawstring 31 and the connecting piece 32 are cross-sewn by means of a polyester fiber connecting rope 4 to enhance the connection strength, and the sewing range in any direction on the connecting piece 32 is not greater than 1 / 2 of the diameter of the connecting piece 32 in that direction, thereby ensuring that the middle position of the connecting piece 32 is not sewn, making it convenient for the subsequently added anchoring tools to pass through the connecting piece, while other positions of the connecting piece 32 can provide a force area, thereby enhancing the contact area between the anchoring tool and the protective net 1.

[0045] Exemplarily, the surface of the connecting piece 32 is covered with a flame retardant antistatic coating to avoid sparks when adding anchors and reduce the possibility of fire.

[0046] Preferably, the above-mentioned non-metallic mine support has a longitudinal width of 3-6 meters, which is suitable for most tunnel sizes and is convenient for laying and overlapping. The width can be selected according to specific needs and application scenarios during use. It has a wide range of choices, great flexibility, and the mesh is easy to store and move.

[0047] In other embodiments, reference Figure 4 The connecting piece 32 may also adopt a circular structure, which can withstand a relatively large load because its structural form can make the force transmission path more reasonable, thereby achieving uniform distribution of the load.

[0048] The overall support of the non-metallic mine of the utility model is firm, soft, light in weight, acid and alkali resistant, not easily aged, low in cost, long in service life, high in tensile and anti-deformation strength in all directions, and has properties such as high strength, flame retardancy, and antistatic. By adding radial reinforcing ribs 2 to the protection net 1, the support strength for the roadway and the working face is greatly enhanced. Through the setting of the strengthening joints 3, the tensile strength and anti-deformation ability of the overall structure in all directions are improved. Moreover, the setting of the connecting piece 32 can not only increase the stress area and enhance the strength of the strengthening joint 3 in all directions, but also provide a larger bearing area for bolts or fixing nails when additional fixing points are needed.

Claims

1. A non-metallic mine support, characterized in that: It comprises a protective net (1) formed by interlacing a plurality of warp belts (12) and weft belts (11); The protective net (1) is provided with a plurality of longitudinal reinforcing ribs (2), and the plurality of reinforcing ribs (2) are arranged at equal distances and at intervals of 0.5-1 meters, and a reinforcing node (3) is further provided between two adjacent reinforcing ribs (2); The reinforcement section (3) comprises two cross-arranged straps (31), the two straps (31) are cross-shaped and the two ends are respectively connected to two adjacent reinforcement ribs (2); The reinforcement section (3) further comprises a connecting piece (32) arranged at the intersection of the two straps (31).

2. A non-metallic mine support according to claim 1, characterized in that: A plurality of the reinforcement sections (3) are arranged at intervals along the length direction of the reinforcement rib (2).

3. A non-metallic mine support according to claim 1, characterized in that: A plurality of the weft belts (11) are arranged at equal intervals.

4. A non-metallic mine support according to claim 1, characterized in that: The plurality of warp belts (12) are arranged at equal intervals.

5. The non-metallic mine support according to claim 1 is characterized in that: The widths of the weft belt (11), the warp belt (12) and the belt (31) are consistent.

6. A non-metallic mine support according to claim 1, characterized in that: The width of the reinforcing rib (2) is 3-5 times the width of the warp belt (12).

7. The non-metallic mine support according to claim 1 is characterized in that: The warp belt (12) and the weft belt (11) are not coplanar, and the reinforcing rib (2) is arranged coplanar with the warp belt (12).

8. The non-metallic mine support according to claim 1 is characterized in that: Its longitudinal width is 3-6 meters.

9. The non-metallic mine support according to claim 1, characterized in that: The materials of the protective net (1), the reinforcing ribs (2) and the reinforcing nodes (3) are all polymer composite materials.

10. The non-metallic mine support according to claim 1, characterized in that: The surfaces of the weft belt (11), the warp belt (12) and the reinforcing ribs (2) are all covered with a layer of flame retardant antistatic coating.

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