Mine safety production standardization major disaster prevention and control device

Abstract

The invention discloses a mine safety production standardization major disaster prevention and control device which comprises anchor rods, a protective net and a supporting plate, the multiple anchor rods are distributed at equal intervals and perpendicularly driven into a mine slope, one end of each anchor rod is anchored in a mine rock stratum, the supporting plate is coaxially fixed outside the anchor rods, the protective net is laid on the mine slope, and the protective net is arranged on the mine slope. The protective net is tightly pressed on the slope surface by the support plate; deformation supporting frames are arranged outside the anchor rods and located on a mine surface landslide layer, and guide cylinders are assembled on the end faces, located on one sides of the supporting plates, of the anchor rods. The protection net is anchored to the mine slope surface through the multiple anchor rods, the protection net can protect deformation and damage of the mine slope surface, rock sliding at the slope surface position is effectively restrained, caving stones are reliably intercepted, the overall stability of the mine slope is improved, and safe production of a mine is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine safety production, and particularly relates to a mine safety production standardized major disaster prevention device. BACKGROUND

[0002] In the mine safety production standardization system, the slope stability management is extremely important; at present, a layer of concrete is mainly sprayed on the slope surface, and metal mesh and short anchor rods are embedded, so as to close the slope surface and connect the local rock mass together, but this way has large construction quantity, high cost and long construction period, and is not suitable for fast construction; at the same time, the traditional concrete slope protection and rigid anchor rod belong to "rigid support", which has good supporting effect, but the rock-soil mass itself will creep and produce stress concentration inside, when the stress exceeds the ultimate strength, the brittle fracture (sudden collapse) without warning and disaster will occur, which is extremely dangerous.

[0003] Therefore, it is necessary to provide a mine safety production standardized major disaster prevention device to solve the problems in the background technology. SUMMARY

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a mine safety production standardized major disaster prevention device, which comprises anchor rods, a protective net and supporting plates, a plurality of anchor rods are distributed equidistantly and vertically punched into the mine slope surface, one end of each of the anchor rods is anchored in the mine rock stratum, the supporting plates are fixed coaxially outside the anchor rods, the protective net is laid on the mine slope surface, and the supporting plates press the protective net tightly on the slope surface.

[0005] A deformed support frame is arranged outside each of the anchor rods, the deformed support frame is located in the surface landslide layer of the mine, and a guide cylinder is assembled on one side end face of the supporting plate on the anchor rod.

[0006] Further, as a preferred, a grouting channel is arranged in the anchor rod, and a plurality of grouting holes are circumferentially distributed on the side wall of the anchor rod, a through hole is arranged on the guide cylinder, a connecting pipe is arranged coaxially in the through hole, and one end of the connecting pipe is connected with the anchor rod.

[0007] Further, as a preferred, the deformed support frame comprises a plurality of steel bars which are circumferentially distributed and located on the supporting plate, a sleeve pipe is slidably arranged on the anchor rod above the grouting hole, the sleeve pipe is slidably arranged in the supporting plate, a strip-shaped groove is arranged on the side wall of the sleeve pipe, a fixing frame is fixed on the anchor rod, and the fixing frame is fixed with the guide cylinder through the strip-shaped groove.

[0008] One end of the sleeve pipe is fixed with a shaft disc, the other end of the steel bar is connected with the shaft disc, a gas pressure cavity is arranged in the guide cylinder, a piston is slidably connected in the gas pressure cavity, and the upper end of the sleeve pipe is fixed with the piston.

[0009] The damping cylinder is horizontally fixed in the guide cylinder.

[0010] Further, preferably, the piston elastically deforms the steel rod on the shaft plate during axial sliding in the guide cylinder.

[0011] Further, preferably, two compression-resistant springs are symmetrically connected below the air pressure cavity in the guide cylinder, and the upper ends of the compression-resistant springs are connected with the positioning disc.

[0012] The lower end of the compression-resistant spring is hingedly connected with a connecting arm, and the connecting arm is slidingly connected with the damping cylinder.

[0013] The positioning disc is internally provided with a sawtooth rack, and the outer wall of the sleeve is circumferentially provided with a pawl.

[0014] Further, preferably, two inner shaft bodies are coaxially fixed in the damping cylinder, and a buffer spring rod is arranged in each of the inner shaft bodies, and one end of the buffer spring rod is connected with the connecting arm through a guide shaft.

[0015] Further, preferably, an inner cavity is arranged in the inner shaft body, the inner cavity is filled with dry concrete, a plurality of water bags are arranged in the inner cavity, a sealing rubber ring is coaxially fixed in the inner cavity, and the sealing rubber ring is slidingly connected with the guide shaft.

[0016] The guide shaft is fixed with a pressing plate, and the pressing plate is slidingly connected in the inner cavity.

[0017] Further, preferably, the other end of each buffer spring rod is fixed with a toothed groove disc, the two toothed groove discs abut against each other, the guide shaft is rotatably connected with the connecting arm, an inclined groove is arranged on the inner wall of the inner shaft body, a guide pin is fixed on the guide shaft, and the guide pin is slidingly connected with the inclined groove.

[0018] Further, preferably, the two toothed groove discs synchronously rotate during sliding of the guide shaft, and the rotating directions of the two toothed groove discs are oppositely arranged.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The anchor rod is adopted in the present application to anchor the protective net on the mine slope surface, the protective net can protect the deformation and damage of the mine slope surface, effectively restricts the rock sliding of the slope position, and reliably intercepts the falling stone, improves the overall stability of the mine slope, and guarantees the safe production of the mine; the deformation support frame is arranged to be supported on the surface landslide layer of the mine by embedding a plurality of deformed steel bars, on the one hand, the plurality of expansion deformed steel bars can effectively enhance the overall firmness of the landslide layer, so that the rock-soil body of the landslide layer is tightly distributed to form an integral whole, on the other hand, the plurality of steel bars can release the internal stress of the rock-soil body through controllable and effective deformation, greatly improving the supporting reliability of the complex slope geology; the shock-absorbing cylinder can provide a two-stage buffer and energy dissipation effect for the deformation of the steel bar in cooperation with the compression spring, especially when the internal stress of the rock-soil body suddenly increases, the water bag in the shock-absorbing cylinder breaks, the concrete can be combined and solidified with water, and the rigid supporting effect of the steel bar is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a schematic diagram of the structure of the steel bar in the undeformed state in the present application;

[0023] Figure 3 It is a sectional view of the present application;

[0024] Figure 4 It is a schematic diagram of the internal structure of the guide cylinder in the present application;

[0025] Figure 5 It is a schematic diagram of the structure of the shock-absorbing cylinder in the present application;

[0026] Figure 6 It is a schematic diagram of the structure of the steel bar in the deformed state in the present application;

[0027] In the drawing: 1, anchor rod; 11, support plate; 12, protective net; 13, grouting hole; 2, deformation support frame; 21, steel bar; 22, sleeve; 23, shaft disc; 24, fixed frame; 3, guide cylinder; 31, through hole; 32, connecting pipe; 33, air pressure cavity; 34, piston; 4, shock-absorbing cylinder; 41, inner shaft body; 42, buffer spring rod; 43, guide shaft; 44, inner cavity; 45, water bag; 46, sealing rubber ring; 47, pressing plate; 5, compression spring; 51, positioning disc; 52, connecting arm; 6, tooth slot disc; 61, inclined slot. DETAILED DESCRIPTION

[0028] Please refer to Figures 1-6In an embodiment of the present invention, a standardized major disaster prevention and control device for mine production safety includes an anchor rod 1, a protective net 12, and a support plate 11. A plurality of anchor rods 1 are equidistantly distributed and vertically driven into the mine slope. One end of each anchor rod 1 is anchored in the mine rock layer to achieve the anchoring effect of the anchor rod 1. The support plate 11 is coaxially fixed to the outside of the anchor rod 1. The protective net 12 is laid on the mine slope. The support plate 11 presses the protective net 12 against the slope, thereby providing an effective restraint effect on the gravel on the slope through the protective net 12, thereby preventing the surface gravel of the slope from falling during the mining production process as much as possible.

[0029] A deformable support frame 2 is provided outside the anchor rod 1, and the deformable support frame 2 is located in the landslide layer on the surface of the mine. A guide cylinder 3 is installed on the end face of one side of the support plate 11 on the anchor rod 1. Several holes can be pre-drilled on the slope of the mine first, and the anchor rod 1 is inserted into each hole. Then the protective net 12 is arranged, and the guide cylinder 3 and the support plate 11 are assembled on each anchor rod 1. The overall construction is convenient and the installation is simple, which effectively shortens the construction period.

[0030] In this embodiment, a grouting channel is opened in the anchor rod 1, and a plurality of grouting holes 13 are distributed circumferentially on the side wall of the anchor rod 1. A through hole 31 is opened on the guide cylinder 3, and a connecting pipe 32 is coaxially arranged in the through hole 31. One end of the connecting pipe 32 is connected to the anchor rod 1. The connecting pipe 32 can be connected to an external grouting equipment. The grouting slurry can enter the grouting channel through the connecting pipe 32 and finally flow into the mine rock layer through the through hole 31 to achieve preliminary anchoring of the anchor rod 1.

[0031] As a preferred embodiment, the deformable support frame 2 includes a plurality of steel bars 21 distributed circumferentially and located on the support plate 11. A sleeve 22 is slidably sleeved on the outside of the anchor rod 1 above the grouting hole 13. The sleeve 22 is slidably arranged in the support plate 11, and a strip groove is opened on the side wall of the sleeve 22. A fixing frame 24 is fixed on the anchor rod 1, and the fixing frame 24 is fixed to the guide cylinder 3 through the strip groove.

[0032] One end of the sleeve 22 is fixed with a shaft disc 23, and the other end of the steel bar 21 is connected to the shaft disc 23. An air pressure chamber 33 is opened in the guide cylinder 3, and a piston 34 is slidably connected in the air pressure chamber 33. The upper end of the sleeve 22 is fixed to the piston 34. When the anchor rod 1 completes the initial anchoring and the supporting plate 11 on the anchor rod 1 presses the protective net 12 to the slope surface, the guide cylinder 3 is assembled on the end of the anchor rod 1, and the air pressure device is used to pump out the air pressure in the air pressure chamber 33 to realize the axial sliding of the sleeve 22. During the sliding process, each steel bar 21 gradually expands and deforms outwards, forming an internal support effect for the landslide layer.

[0033] A shock-absorbing cylinder 4 is horizontally fixed in the guide cylinder 3 .

[0034] In the embodiment, the piston 34 elastically deforms the reinforcing bar 21 on the shaft disc 23 during axial sliding in the guide cylinder 3, wherein the reinforcing bar 21 is made of a material with high yield strength, high fatigue limit and good toughness, and can be made of high-strength alloy spring steel or high-performance engineering steel with similar mechanical properties.

[0035] In the embodiment, two compression springs 5 are symmetrically connected below the air pressure cavity 33 in the guide cylinder 3, and the upper ends of the compression springs 5 are connected with the positioning disc 51.

[0036] The lower end of the compression spring 5 is hingedly connected with the connecting arm 52, and the connecting arm 52 is slidingly connected with the shock-absorbing cylinder 4.

[0037] The inside of the positioning disc 51 is provided with a sawtooth rack, and the outer wall of the sleeve 22 is circumferentially provided with a pawl, wherein the sawtooth rack on the positioning disc 51 can cooperate with the pawl to one-way clamp and fix the sleeve 22, so that the sleeve 22 can only slide upward, and thus, during specific construction, the air pressure device can accurately control the air pressure extraction amount of the air pressure cavity 33 according to the specific landslide terrain and the softness of the landslide layer, so as to realize the axial accurate sliding adjustment of the sleeve 22, so as to make the reinforcing bar 21 buried in the landslide layer to bend in a specified shape; after the construction is completed, the air pressure cavity 33 is in an air flow circulation state, so that the sleeve 22 can normally slide and displace, so that when the stress in the landslide layer is released, the reinforcing bar 21 is extruded to deform and recover, the compression spring 5 cooperates with the shock-absorbing cylinder 4 to provide elastic support for the positioning disc 51, and a two-stage buffering and energy dissipation effect is realized.

[0038] In the embodiment, two inner shaft bodies 41 are coaxially fixed in the shock-absorbing cylinder 4, and a buffer spring rod 42 is arranged in each inner shaft body 41, one end of the buffer spring rod 42 is connected with the connecting arm 52 through a guide shaft 43, and it should be noted that the elastic strength of the buffer spring rod 42 is less than that of the compression spring 5, so that the buffer spring rod 42 can elastically deform and compress before the compression spring 5 deforms.

[0039] As a preferred embodiment, an inner cavity 44 is arranged in the inner shaft body 41, the inner cavity 44 is filled with dry concrete, a plurality of water bags 45 are arranged in the inner cavity, a sealing rubber ring 46 is coaxially fixed in the inner cavity 44, and the sealing rubber ring 46 is slidingly connected with the guide shaft 43.

[0040] The guide shaft 43 is fixed with a pressing plate 47, the pressing plate 47 is slidingly connected in the inner cavity 44, therefore, when high-intensity stress release occurs in the landslide layer, the guide shaft 43 can be completely inserted into the inner shaft body 41 under the pushing of the connecting arm 52, the pressing plate 47 on the guide shaft 43 is displaced to the limit position inside the inner cavity 44, at this time, the water bag 45 is broken under the extrusion, the water in the water bag 45 is mixed with the dry concrete, and the guide shaft 43 is slidingly reset and solidified, at this time, the pressing plate 47 on the guide shaft 43 is fixed in the inner cavity 44 through the concrete block, and the subsequent elastic support is only provided by the compression spring 5, the subsequent deformation recovery amount of the steel bar 21 is small, and the rigid support effect of the steel bar 21 is improved.

[0041] In the embodiment, the other end of each of the buffer spring rods 42 is fixed with a gear slot disc 6, the two gear slot discs 6 abut and contact, the guide shaft 43 is rotationally connected with the connecting arm 51, the inner wall of the inner shaft body 41 is provided with an inclined groove 61, and a guide pin is fixed on the guide shaft 43 and slidingly connected with the inclined groove 61, so that the buffer spring rod 42 and the gear slot disc can be circumferentially deflected with the guide shaft 43 in the axial sliding.

[0042] In the embodiment, the two gear slot discs 6 are synchronously rotated in the sliding of the guide shaft 43, and the rotating directions thereof are oppositely arranged, wherein, since the pressing plate 47 will extrude and break the water bag 45 in the sliding of the guide shaft 43, in order to avoid the water bag 45 from being broken too early in the conventional use and improve the resistance, two gear slot discs 6 are arranged, which can utilize the high-frequency tooth peak contact jacking action in the contact and rotation process to generate a small and instantaneous jacking force, the force can periodically and high-frequency axially push the end of the buffer spring rod 42, so as to provide the vibration energy absorption effect to the end of the buffer spring rod 42, so as to reduce the water bag 45 breaking probability when high-intensity stress occasionally exists in the landslide layer, and maintain the damping cylinder 4 buffering and energy dissipation function, and the pressing plate 47 will only extrude and break the water bag 45 when high-intensity stress occurs in the landslide layer for a short time, and the concrete in the inner cavity 44 is solidified.

[0043] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A standardized major disaster prevention and control device for mine safety production, comprising an anchor rod (1), a protective net (12) and a support plate (11), characterized in that: A plurality of anchor rods (1) are equidistantly distributed and vertically driven into the mine slope, one end of each anchor rod (1) is anchored in the mine rock layer, a support plate (11) is coaxially fixed outside the anchor rod (1), the protection net (12) is laid on the mine slope, and the support plate (11) presses the protection net (12) against the slope; A deformable support frame (2) is provided outside the anchor rod (1), and the deformable support frame (2) is located in the landslide layer on the surface of the mine. A guide cylinder (3) is installed on the end face of one side of the support plate (11) on the anchor rod (1).

2. The mine safety production standardization major disaster prevention device according to claim 1 is characterized by: A grouting channel is provided in the anchor rod (1), and a plurality of grouting holes (13) are distributed circumferentially on the side wall of the anchor rod (1). A through hole (31) is provided on the guide cylinder (3), and a connecting pipe (32) is coaxially provided in the through hole (31), and one end of the connecting pipe (32) is connected to the anchor rod (1).

3. The mine safety production standardization major disaster prevention and control device according to claim 1 is characterized by: The deformable support frame (2) includes a plurality of steel bars (21) distributed circumferentially and located on the support plate (11); a sleeve (22) is slidably sleeved on the outside of the anchor rod (1) and located above the grouting hole (13); the sleeve (22) is slidably arranged in the support plate (11); and a strip groove is provided on the side wall of the sleeve (22); a fixing frame (24) is fixed on the anchor rod (1); and the fixing frame (24) is fixed to the guide cylinder (3) through the strip groove; A shaft disc (23) is fixed to one end of the sleeve (22), and the other end of the steel bar (21) is connected to the shaft disc (23). An air pressure chamber (33) is provided in the guide cylinder (3), and a piston (34) is slidably connected in the air pressure chamber (33). The upper end of the sleeve (22) is fixed to the piston (34). A shock-absorbing cylinder (4) is horizontally fixed in the guide cylinder (3).

4. The mine safety production standardization major disaster prevention and control device according to claim 3 is characterized by: When the piston (34) slides axially in the guide cylinder (3), the steel bar (21) on the shaft disc (23) undergoes elastic deformation.

5. The mine safety production standardization major disaster prevention and control device according to claim 3 is characterized by: Two compression springs (5) are symmetrically connected below the air pressure chamber (33) in the guide cylinder (3), and the upper ends of the compression springs (5) are connected to the positioning plate (51); The lower end of the compression spring (5) is hingedly connected to a connecting arm (52), and the connecting arm (52) is slidably connected to the shock absorbing cylinder (4); A sawtooth rack is provided inside the positioning disk (51), and ratchets are distributed around the outer wall of the sleeve (22).

6. The mine safety production standardization major disaster prevention device according to claim 5, characterized in that: Two inner shaft bodies (41) are coaxially fixed in the shock-absorbing cylinder (4), and a buffer spring rod (42) is provided in each of the inner shaft bodies (41). One end of the buffer spring rod (42) is connected to the connecting arm (52) via a guide shaft (43).

7. The mine safety production standardization major disaster prevention device according to claim 6 is characterized by: An inner cavity (44) is provided in the inner shaft body (41), the inner cavity (44) is filled with dry concrete, and a plurality of water bags (45) are distributed in the inner cavity. A sealing rubber ring (46) is coaxially fixed in the inner cavity (44), and the sealing rubber ring (46) is slidably connected to the guide shaft (43); A pressing plate (47) is fixed on the guide shaft (43), and the pressing plate (47) is slidably connected in the inner cavity (44).

8. The mine safety production standardization major disaster prevention device according to claim 7 is characterized by: The other end of each buffer spring rod (42) is fixed with a toothed disc (6), the two toothed discs (6) are in contact with each other, the guide shaft (43) is rotatably connected to the connecting arm (51), an oblique groove (61) is provided on the inner wall of the inner shaft body (41), a guide pin is fixed on the guide shaft (43), and the guide pin is slidably connected to the oblique groove (61).

9. The mine safety production standardization major disaster prevention device according to claim 8, characterized in that: The two toothed discs (6) both rotate synchronously with the guide shaft (43) while sliding, and their rotation directions are set in opposite directions.

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