Roadway supporting device for underground operation of coal mine

Abstract

The invention belongs to the technical field of coal mine supporting, and particularly relates to a roadway supporting device for coal mine underground operation, which comprises a plurality of vertically arranged supporting columns, the top ends of the supporting columns are provided with height adjusting assemblies, and the top ends of the plurality of height adjusting assemblies are fixedly connected with a top plate; the height adjusting assemblies are located on the two opposite sides of the top plate correspondingly and are symmetrically arranged, a protection assembly and a plurality of reinforcing assemblies are arranged on the top face of the top plate, the reinforcing assemblies are slidably connected with the protection assembly, the reinforcing assemblies are used for supporting the protection assembly, and a plurality of grouting assemblies are arranged in the circumferential direction of the protection assembly at equal intervals; the anchor rods are arranged in the height direction of the supporting column at equal intervals, the outer side walls of the anchor rods are provided with mounting assemblies, and the mounting assemblies are used for being fixed to the side wall of the roadway. And the weak supporting area in the roadway can be emphatically treated in a targeted manner.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine support, and in particular relates to a tunnel support device used for underground coal mine operations. Background Art

[0002] The purpose of tunnel support in coal mines is to ensure the stability of the tunnel surrounding rock mass, so that the tunnel surrounding rock mass does not collapse, thereby protecting the personal safety of workers and achieving the goal of safe production. Anchor support is one of the most commonly used support methods at present, and its support effect has better performance.

[0003] With the mining of coal seams, the surrounding rock of the tunnel support is prone to damage and deformation, resulting in roof collapse in the coal mine tunnel. Severe deviation will cause uneven force on the support components and even local collapse. In addition, during the mining process, due to the uneven surface of the roof in the coal mine tunnel, the support device cannot adapt to the various shapes of the roof, resulting in a small contact area during support, poor support capacity under stress, and certain safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a tunnel support device for underground coal mine operations to solve the above problems.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A tunnel support device for underground coal mine operations, comprising a plurality of vertically arranged support columns, the top ends of the support columns are provided with height adjustment components, the top ends of the plurality of height adjustment components are fixedly connected to a roof plate, the plurality of height adjustment components are respectively located on two opposite sides of the roof plate and are symmetrically arranged, the top surface of the roof plate is provided with a protective component and a plurality of reinforcement components, the reinforcement component is slidably connected to the protective component, the reinforcement component is used to support the protective component, the protective component is provided with a plurality of grouting components equidistantly arranged circumferentially, the grouting component passes through the protective component, the side walls of the support columns are penetrated by a plurality of anchor rods, the plurality of anchor rods are equidistantly arranged along the height direction of the support columns, the outer side walls of the anchor rods are provided with mounting components, the mounting components are used to be fixed to the side walls of the tunnel.

[0007] Preferably, the protective assembly includes a support plate, a bladder body and a top beam which are fixedly connected in sequence from the inside to the outside, the support plate, the bladder body and the top beam are coaxially arranged, the support plate, the bladder body and the top beam are fixedly connected to the top surface of the top plate, an anchor net is provided on the side of the top beam away from the bladder body, the anchor net is fixedly connected to the top surface of the top plate, and the grouting assembly passes through the support plate, the bladder body, the top beam and the anchor net.

[0008] The lockhole that is formed on the side of the two wheels is formed on the hinge parts of each of the two wheels, and the lockhole that is formed on the two wheels is formed on the hinge parts of each wheel hub.

[0009] Preferably, the mounting assembly includes a mounting plate and a pressure plate which are sleeved on the outer side wall of the anchor rod, a side of the pressure plate close to the mounting plate is circumferentially fixedly connected with a plurality of mounting nails, an end of the mounting nail away from the pressure plate passes through the mounting plate and is inserted into the side wall of the tunnel, the outer side wall of the mounting nail is sleeved with a second spring, the second spring is fixedly connected between the mounting plate and the pressure plate, and an extrusion portion is provided on the side of the pressure plate away from the mounting plate.

[0010] Preferably, the extrusion portion includes a pressure block threadedly connected to the outer wall of the anchor rod, the pressure block abuts against the pressure plate, a plurality of connecting shafts are circumferentially fixed to a side of the pressure plate close to the pressure block, the connecting shaft is rotatably connected to one end of a pressure rod, a torsion spring is sleeved on the outer wall of the connecting shaft, one end of the torsion spring abuts against the side wall of the pressure plate, the other end of the torsion spring abuts against the outer wall of the pressure rod, and the other end of the pressure rod abuts against a side of the pressure block away from the pressure plate.

[0011] Preferably, the grouting assembly includes a grouting pipe, which passes through the support plate, the bladder, the top beam, and the anchor net. The side wall of the grouting pipe is provided with two openings, which are respectively located on opposite sides of the grouting pipe and are symmetrically arranged. The opening is connected to the bladder, and one end of the grouting pipe passes through the anchor net and is circumferentially fixed with a plurality of plug blocks.

[0012] Preferably, the height adjustment assembly includes a vertically arranged adjustment rod, the top of the support column is provided with a slot, the bottom end of the adjustment rod is inserted into the slot, the side wall of the adjustment rod is provided with a plurality of threaded holes, the plurality of threaded holes are arranged at equal intervals along the height direction of the adjustment rod, the side wall of the support column is provided with a through hole, the through hole is threadedly connected with a screw, and the screw is inserted into the slot and threadedly connected to the threaded hole.

[0013] Preferably, a side of the top beam close to the anchor net is fixedly connected with a plurality of anti-slip protrusions at equal intervals in the circumferential direction.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] The present invention is provided with a plurality of reinforcement components, which support the protection components at different positions, so that the support nodes are arranged in sections in the underground tunnel of the coal mine, and the weak support areas inside the tunnel can be specifically treated, and the support nodes are set in the weak areas to prevent collapse accidents, which has high flexibility;

[0016] The protective components are contacted with the tunnel rock strata, and multiple grouting components are driven into the grouting holes, so that multiple pipes are used as supporting points to form a good support effect on the tunnel rock strata and improve the uniformity of force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a top view of the reinforcement component;

[0020] Figure 3 for Figure 1 A partial enlarged view of point A in the middle.

[0021] Among them, 1. support column; 2. adjustment rod; 3. top plate; 4. top beam; 5. anchor net; 6. bladder; 7. support plate; 8. grouting pipe; 9. opening; 10. plug block; 11. fixing plate; 12. telescopic rod; 13. slider; 14. connecting plate; 15. slide rod; 16. first spring; 17. limit plate; 18. block; 19. anchor rod; 20. mounting plate; 21. pressure plate; 22. pressure block; 23. connecting shaft; 24. torsion spring; 25. pressure rod; 26. mounting nail; 27. second spring; 28. limit ring; 29. ​​threaded hole; 30. screw; 31. anti-slip protrusion. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1 to 3 As shown, the present invention provides a tunnel supporting device for underground coal mine operations, including a plurality of vertically arranged support columns 1, the top of the support column 1 is provided with a height adjustment component, the tops of the plurality of height adjustment components are fixedly connected with a top plate 3, the plurality of height adjustment components are respectively located on two opposite sides of the top plate 3 and are symmetrically arranged, the top surface of the top plate 3 is provided with a protective component and a plurality of reinforcement components, the reinforcement component is slidably connected to the protective component, the reinforcement component is used to support the protective component, the protective component is provided with a plurality of grouting components at equal intervals in the circumferential direction of the protective component, the grouting component penetrates the protective component, the side wall of the support column 1 is penetrated with a plurality of anchor rods 19, the plurality of anchor rods 19 are arranged at equal intervals along the height direction of the support column 1, the outer side wall of the anchor rod 19 is provided with a mounting component, and the mounting component is used to be fixed on the side wall of the tunnel.

[0025] The present invention is provided with a plurality of reinforcement components, which support the protection components at different positions, so that the support nodes are arranged in sections in the underground tunnel of the coal mine, and the weak support areas inside the tunnel can be specifically treated, and the support nodes are set in the weak areas to prevent collapse accidents, which has high flexibility;

[0026] The protective components are contacted with the tunnel rock strata, and multiple grouting components are driven into the grouting holes, so that multiple pipes are used as supporting points to form a good support effect on the tunnel rock strata and improve the uniformity of force.

[0027] A further optimized solution is provided, in which the protective assembly includes a support plate 7, a bladder body 6 and a top beam 4 which are fixedly connected in sequence from the inside to the outside, the support plate 7, the bladder body 6 and the top beam 4 are coaxially arranged, the support plate 7, the bladder body 6 and the top beam 4 are fixedly connected to the top surface of the top plate 3, an anchor net 5 is provided on the side of the top beam 4 away from the bladder body 6, the anchor net 5 is fixedly connected to the top surface of the top plate 3, and the grouting assembly passes through the support plate 7, the bladder body 6, the top beam 4 and the anchor net 5.

[0028] A further optimized solution is provided, wherein the reinforcement assembly includes a fixed plate 11, one side of the fixed plate 11 is fixedly connected to the top surface of the top plate 3, the other side of the fixed plate 11 is fixedly connected to the side wall of the support plate 7, the side wall of the fixed plate 11 is hinged with a telescopic rod 12, the telescopic end of the telescopic rod 12 is hinged with a block 18, the side wall of the support plate 7 is slidably connected with a slider 13, the side of the slider 13 away from the support plate 7 is fixedly connected with two symmetrically arranged connecting plates 14, the side wall of the connecting plate 14 is slidably connected with a sliding rod 15, one end of the sliding rod 15 passes through the connecting plate 14 and is clamped with the block 18, the other end of the sliding rod 15 passes through the connecting plate 14 and is fixedly connected to a limiting plate 17, the limiting plate 17 abuts against the slider 13, a first spring 16 is fixedly connected between the limiting plate 17 and the connecting plate 14, the first spring 16 is sleeved on the outer side wall of the sliding rod 15, the outer side wall of the sliding rod 15 is threadedly connected to a limiting ring 28, and the limiting ring 28 abuts against the connecting plate 14.

[0029] The slider 13 slides on the side wall of the support plate 7 to the area with weak support inside the tunnel, and then the length of the telescopic end of the telescopic rod 12 is adjusted so that the block 18 squeezes the two slide bars 15, the slide bars 15 slide, and the block 18 is stuck between the two slide bars 15. The slide bars 15 are reset under the action of the first spring 16, and then the limit ring 28 is threadedly connected to the outer wall of the slide bar 15 to prevent the slide bar 15 from sliding. The limit plate 17 and the limit ring 28 both play a limiting role on the slide bar 15.

[0030] Slide blocks 13 are arranged at different positions of the support plate 7, so that support nodes are arranged in sections in the underground coal mine tunnel. The weak support areas inside the tunnel can be targeted and focused on. The support nodes of the slide blocks 13 and the support plate 7 are set in the weak areas to prevent collapse accidents, which has high flexibility.

[0031] A further optimized solution is that the mounting assembly includes a mounting plate 20 and a pressure plate 21 which are sleeved on the outer side wall of the anchor rod 19, a plurality of mounting nails 26 are circumferentially fixedly connected to the side of the pressure plate 21 close to the mounting plate 20, the end of the mounting nail 26 away from the pressure plate 21 passes through the mounting plate 20 and is inserted into the side wall of the tunnel, a second spring 27 is sleeved on the outer side wall of the mounting nail 26, the second spring 27 is fixedly connected between the mounting plate 20 and the pressure plate 21, and an extrusion portion is provided on the side of the pressure plate 21 away from the mounting plate 20.

[0032] By installing the mounting plate 20 and the pressing plate 21 on the side wall of the tunnel, the coal body is made more stable during the mining process and the supporting effect is good.

[0033] A further optimized solution is that the extrusion portion includes a pressure block 22 threadedly connected to the outer wall of the anchor rod 19, the pressure block 22 abuts against the pressure plate 21, and a plurality of connecting shafts 23 are circumferentially fixed on the side of the pressure plate 21 close to the pressure block 22, the connecting shaft 23 is rotatably connected to one end of a pressure rod 25, and the outer wall of the connecting shaft 23 is sleeved with a torsion spring 24, one end of the torsion spring 24 abuts against the side wall of the pressure plate 21, the other end of the torsion spring 24 abuts against the outer wall of the pressure rod 25, and the other end of the pressure rod 25 abuts against the side of the pressure block 22 away from the pressure plate 21.

[0034] The side walls of the underground tunnels in the coal mine are uneven. When the mounting plate 20 is subjected to uneven force from the side walls of the tunnel and transmits it to the pressure plate 21, the pressure plate 21 is displaced. The pressure rod 25 can transmit the unbalanced force to the pressure block 22, and the pressure block 22 abuts against the pressure plate 21, transmitting the force to the pressure plate 21 to slow down the displacement of the pressure plate 21.

[0035] A further optimized solution is that the grouting assembly includes a grouting pipe 8, which passes through the support plate 7, the bladder 6, the top beam 4, and the anchor net 5. Two openings 9 are provided on the side wall of the grouting pipe 8, and the two openings 9 are respectively located on two opposite sides of the grouting pipe 8 and are symmetrically arranged. The opening 9 is connected to the bladder 6, and one end of the grouting pipe 8 passes through the anchor net 5 and is circumferentially fixedly connected with a plurality of plug blocks 10.

[0036] A further optimized solution is that the height adjustment assembly includes a vertically arranged adjusting rod 2, a slot is provided at the top of the supporting column 1, the bottom end of the adjusting rod 2 is inserted in the slot, a plurality of threaded holes 29 are provided on the side wall of the adjusting rod 2, and the plurality of threaded holes 29 are arranged at equal intervals along the height direction of the adjusting rod 2, a through hole is provided on the side wall of the supporting column 1, a screw 30 is threadedly connected to the through hole, and the screw 30 is inserted into the slot and threadedly connected to the threaded hole 29.

[0037] As a further optimization scheme, a plurality of anti-slip protrusions 31 are fixedly connected at equal intervals in the circumferential direction on one side of the top beam 4 close to the anchor net 5 .

[0038] By providing the anti-skid protrusions 31 , the friction between the top beam 4 and the anchor net 5 can be increased to prevent relative slippage. The anti-skid protrusions 31 can prevent the anchor net 5 from falling off.

[0039] The working process of the present invention is as follows:

[0040] The height of the adjusting rod 2 is adjusted by means of the screw 30 and the threaded hole 29 so that the device of the present invention is adapted to the top wall of the tunnel.

[0041] The slider 13 slides on the side wall of the support plate 7 to the weak support area inside the tunnel, and then adjusts the length of the telescopic end of the telescopic rod 12 so that the block 18 squeezes the two slide bars 15, the slide bars 15 slide, and the block 18 is stuck between the two slide bars 15. The slide bars 15 are reset under the action of the first spring 16, and then the limit ring 28 is threadedly connected to the outer wall of the slide bar 15 to prevent the slide bar 15 from sliding. The sliders 13 are set at different positions of the support plate 7, so that the support nodes are set in sections in the underground tunnel of the coal mine, and the weak support areas inside the tunnel can be targeted and focused, and the support nodes of the slider 13 and the support plate 7 are set in the weak area to prevent collapse accidents, which has high flexibility.

[0042] The mounting plate 20 is installed on the side wall of the tunnel. When the mounting plate 20 is subjected to uneven force from the side wall direction of the tunnel and the uneven force is transmitted to the pressure plate 21, the pressure plate 21 is displaced. The unbalanced force can be transmitted to the pressure block 22 through the pressure rod 25. The pressure block 22 abuts against the pressure plate 21 and transmits the force to the pressure plate 21 to slow down the displacement of the pressure plate 21.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A tunnel support device for underground coal mine operations, characterized in that: The invention comprises a plurality of vertically arranged support columns (1), the top end of each of the support columns (1) being provided with a height adjustment component, the top ends of each of the height adjustment components being fixedly connected to a top plate (3), the height adjustment components being respectively located on two opposite sides of the top plate (3) and being symmetrically arranged, the top surface of the top plate (3) being provided with a protection component and a plurality of reinforcement components, the reinforcement component being slidably connected to the protection component, the reinforcement component being used to support the protection component, the protection component being provided with a plurality of grouting components equidistantly arranged around the circumference, the grouting components penetrating the protection component, the side wall of the support column (1) being provided with a plurality of anchor rods (19), the plurality of anchor rods (19) being equidistantly arranged along the height direction of the support column (1), the outer side wall of the anchor rod (19) being provided with a mounting component, the mounting component being used to be fixed to the side wall of the tunnel.

2. A tunnel support device for underground coal mine operation according to claim 1, characterized in that: The protective component comprises a support plate (7), a bladder (6) and a top beam (4) which are fixedly connected in sequence from the inside to the outside; the support plate (7), the bladder (6) and the top beam (4) are coaxially arranged; the support plate (7), the bladder (6) and the top beam (4) are fixedly connected to the top surface of the top plate (3); an anchor net (5) is provided on a side of the top beam (4) away from the bladder (6); the anchor net (5) is fixedly connected to the top surface of the top plate (3); and the grouting component passes through the support plate (7), the bladder (6), the top beam (4) and the anchor net (5).

3. A tunnel support device for underground coal mine operation according to claim 2, characterized in that: The reinforcement assembly comprises a fixing plate (11), one side of the fixing plate (11) is fixedly connected to the top surface of the top plate (3), the other side of the fixing plate (11) is fixedly connected to the side wall of the support plate (7), the side wall of the fixing plate (11) is hinged with a telescopic rod (12), the telescopic end of the telescopic rod (12) is hinged with a clamping block (18), the side wall of the support plate (7) is slidably connected with a slider (13), the side of the slider (13) away from the support plate (7) is fixedly connected with two symmetrically arranged connecting plates (14), the side wall of the connecting plate (14) is slidably connected with a sliding rod ( 15), one end of the slide rod (15) passes through the connecting plate (14) and is engaged with the clamping block (18), the other end of the slide rod (15) passes through the connecting plate (14) and is fixedly connected to a limiting plate (17), the limiting plate (17) abuts against the slider (13), a first spring (16) is fixedly connected between the limiting plate (17) and the connecting plate (14), the first spring (16) is sleeved on the outer wall of the slide rod (15), the outer wall of the slide rod (15) is threadedly connected to a limiting ring (28), and the limiting ring (28) abuts against the connecting plate (14).

4. A tunnel support device for underground coal mine operation according to claim 1, characterized in that: The mounting assembly comprises a mounting plate (20) and a pressure plate (21) which are sleeved on the outer side wall of the anchor rod (19); a plurality of mounting nails (26) are circumferentially fixedly connected to a side of the pressure plate (21) close to the mounting plate (20); an end of the mounting nail (26) away from the pressure plate (21) passes through the mounting plate (20) and is inserted into the side wall of the tunnel; a second spring (27) is sleeved on the outer side wall of the mounting nail (26); the second spring (27) is fixedly connected between the mounting plate (20) and the pressure plate (21); and an extrusion portion is provided on a side of the pressure plate (21) away from the mounting plate (20).

5. A tunnel support device for underground coal mine operation according to claim 4, characterized in that: The extrusion portion includes a pressure block (22) threadedly connected to the outer wall of the anchor rod (19), the pressure block (22) abutting against the pressure plate (21), a plurality of connecting shafts (23) circumferentially fixed to a side of the pressure plate (21) close to the pressure block (22), the connecting shaft (23) being rotatably connected to one end of a pressure rod (25), the outer wall of the connecting shaft (23) being sleeved with a torsion spring (24), one end of the torsion spring (24) abutting against the side wall of the pressure plate (21), the other end of the torsion spring (24) abutting against the outer wall of the pressure rod (25), and the other end of the pressure rod (25) abutting against a side of the pressure block (22) away from the pressure plate (21).

6. A tunnel support device for underground coal mine operation according to claim 2, characterized in that: The grouting assembly comprises a grouting pipe (8), the grouting pipe (8) passes through the support plate (7), the bladder (6), the top beam (4), and the anchor net (5), the side wall of the grouting pipe (8) is provided with two openings (9), the two openings (9) are respectively located on two opposite sides of the grouting pipe (8) and are symmetrically arranged, the openings (9) are communicated with the bladder (6), one end of the grouting pipe (8) passes through the anchor net (5) and is circumferentially fixedly connected with a plurality of plug blocks (10).

7. The tunnel support device for underground coal mine operation according to claim 1, characterized in that: The height adjustment assembly comprises a vertically arranged adjustment rod (2); a slot is provided at the top of the support column (1); the bottom end of the adjustment rod (2) is inserted into the slot; a plurality of threaded holes (29) are provided on the side wall of the adjustment rod (2); the plurality of threaded holes (29) are arranged at equal intervals along the height direction of the adjustment rod (2); a through hole is provided on the side wall of the support column (1); a screw (30) is threadedly connected to the through hole; the screw (30) is inserted into the slot and threadedly connected to the threaded hole (29).

8. The tunnel support device for underground coal mine operation according to claim 2, characterized in that: A plurality of anti-slip protrusions (31) are fixedly connected at equal intervals in the circumferential direction on one side of the top beam (4) close to the anchor net (5).

Images