Underground mine goaf automobile waste rock discharging system

Abstract

The utility model discloses an automobile waste rock discharging system in an underground mine goaf, and belongs to the field of mine production. The device comprises a gate roadway, a connection roadway and a goaf which are sequentially connected, the bottom of the goaf is lower than that of the connection roadway, and a car stop device is arranged at the bottom, close to the goaf, of the connection roadway; the car stop device comprises a pair of H-shaped steel which is vertically stacked and horizontally placed, the two sides of the H-shaped steel are each provided with a row of vertical anchor rods which are tightly attached to the H-shaped steel and anchored into the bottom of the connection roadway, and horizontal anchor rods anchored into the side walls of the connection roadway are welded to the two ends of the H-shaped steel. According to the utility model, the potential safety hazard that an automobile slides to a goaf can be effectively solved, and the gangue discharging operation is ensured to be stably carried out.

Description

Technical Field

[0001] The utility model belongs to the field of mine production, and more specifically relates to an underground mine goaf area automobile gangue removal system. Background Art

[0002] Underground mining generally involves mining the ore body in stages from bottom to top, and each layer is divided into various mine rooms. After the ore in each mine room is mined, a goaf is formed. The methods for handling goafs are: first, fill materials from the surface filling station, pass through the underground filling pipeline to each goaf, and fill the goaf with filling materials after bonding. After the filling body reaches the designed strength, the adjacent mine rooms and upper layer mine rooms are mined; second, the gangue from the construction of the underground development and mining tunnels or chambers is transported to the goaf by car, and the goaf is filled with gangue; third, the gangue is combined with filling and bonding materials, and the goaf is filled in layers. Among them, when filling the goaf with filling and bonding materials alone, there are problems such as high cost, many processes, long time, and difficulty in management. Filling the goaf with waste rock from underground mining tunnels saves the cost of lifting the waste rock to the surface and the cost of filling cementing materials. It has low cost and the route of the waste rock from the mining tunnels to the goaf is short, making it less difficult to manage. It is a common method of underground mining operations.

[0003] The gangue from the tunnels or chambers that have been developed and mined underground is transported by transport vehicles to the connecting tunnels through the horizontal tunnels and dumped into the goaf. Generally, the vehicles are driven to the side of the connecting tunnels in the mining area, the gangue is unloaded to the ground, and then pushed into the goaf with a forklift. Alternatively, after the gangue is piled up at the side of the goaf, the vehicle is controlled to directly overturn the carriage and dump the gangue directly into the goaf. However, in actual work, both methods lack certain safety and can easily cause the vehicle to slide into the goaf, causing safety accidents.

[0004] The Chinese patent application number is: CN201020223623.2, and the patent document with the publication date of December 15, 2010 discloses a time-sharing transportation and filling system for underground coal and gangue, which includes an original coal conveying belt conveyor, an upper coal bunker and a lower coal bunker arranged at both ends of the coal conveying belt conveyor, and a coal feeder arranged at the bottom of the upper coal bunker. It is characterized in that it also includes a gangue unloading pit arranged at the vehicle entrance end of the mining area transportation yard, a gangue crusher arranged at the upper mouth of the lower coal bunker, and a gangue bunker arranged in the old tunnel near the exit of the coal conveying belt tunnel; an unloading device is arranged on the top of the gangue unloading pit, and a scraper conveyor is arranged between the bottom of the gangue unloading pit and the gangue crusher; the coal feeder is a two-way unloading coal feeder, and a conveyor is arranged at one end of the coal feeder unloading gangue to the gangue bunker, and a loading device is arranged at the bottom of the gangue bunker. The utility model utilizes the original coal conveyor belt conveyor uphill tunnel to lift the gangue to the upper transport tunnel in the goaf, thereby improving the transport capacity and realizing continuous transport of gangue.

[0005] The Chinese patent application number is: CN202122760343.6, and the patent document with the publication date of April 5, 2022 discloses an underground mine gangue loading tunnel structure, which belongs to the field of mining production. It includes a transport tunnel, a transport track, a shovel loader and an excavation tunnel; the transport track is arranged in the transport tunnel, extending along the length direction of the transport tunnel, and a mine car is arranged on it; the excavation tunnel has at least one and the inlet is arranged on one side of the transport track, and the other side of the transport track is provided with a side gangue blocking device; the shovel loader is used to transport the gangue in the excavation tunnel to the mine car. The utility model can efficiently transport the gangue after blasting, and there is no restriction on the cross-sectional size of the transport tunnel, which reduces the cost of gangue transportation.

[0006] The above two prior art solutions are designed for the transportation of gangue, which improves the transportation capacity of gangue. However, they do not have a good solution to the potential safety hazard when gangue is discharged into the goaf after being transported to the connecting tunnel by vehicles. Summary of the invention

[0007] 1. Problems to be solved

[0008] Aiming at the problem that there are certain safety hazards when existing mine production discharges gangue to the goaf, the utility model provides an underground mine goaf automobile gangue discharge system, which can effectively solve the safety hazard of the car sliding into the goaf and ensure the stable progress of the gangue discharge operation.

[0009] 2. Technical solution

[0010] To solve the above problems, the utility model adopts the following technical solutions.

[0011] A vehicle gangue removal system for a goaf area of ​​an underground mine comprises a horizontal tunnel, a connecting tunnel and a goaf which are connected in sequence, wherein the bottom height of the goaf is lower than the bottom height of the connecting tunnel, and a vehicle stop device is provided near the bottom of the goaf in the connecting tunnel; the vehicle stop device comprises a pair of H-shaped steels stacked up and down and placed horizontally, a row of vertical anchor rods which are closely attached to the H-shaped steel and anchored in the bottom of the connecting tunnel are respectively provided on both sides of the H-shaped steel, and horizontal anchor rods which are anchored in the side walls of the connecting tunnel are welded to both ends of the H-shaped steel.

[0012] As a further improvement of the technical solution, the height of a single H-shaped steel is 280-320 mm, and the distance between its two ends and the side wall of the connecting tunnel is 40-60 mm.

[0013] As a further improvement of the technical solution, an inclined chute is provided at the connection between the goaf and the connecting tunnel.

[0014] As a further improvement of the technical solution, the inclined chute has an inclination angle of 45-50° and a horizontal width of 2400-3000 mm.

[0015] As a further improvement of the technical solution, a cantilevered roof area is provided at the top of the connecting tunnel above the front side of the vehicle blocking device.

[0016] As a further improvement of the technical solution, the number of the horizontal anchor rods is not less than two.

[0017] As a further improvement of the technical solution, the distance between two adjacent vertical anchor rods is less than 500 mm.

[0018] As a further improvement of the technical solution, circular rings mounted on the vertical anchor rods are welded on both sides of the H-shaped steel.

[0019] As a further improvement of the technical solution, the diameters of the horizontal anchor rods and the vertical anchor rods are 20-25 mm, and the depth of the two anchored into the wall of the connecting tunnel is 900-1100 mm, with 500-700 mm exposed.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] (1) The utility model discloses an underground mine goaf automobile gangue discharge system, in which a vehicle blocking device is provided at the bottom of the connecting tunnel near the goaf, which can block the vehicle when the vehicle is unloading gangue, and prevent the vehicle from sliding into the goaf due to the tilt of the center of gravity when unloading gangue. In particular, according to the environmental conditions of the underground mine tunnel, the vehicle blocking device can be disassembled and installed by simple H-shaped steel and anchor rods. The structure is simple and the strength is not low, and the vehicle can be disassembled and used repeatedly, which effectively improves the work safety of unloading gangue to the goaf in mine production;

[0023] (2) The utility model discloses an underground mine goaf automobile gangue discharge system, in which an inclined chute is arranged at the connection between the goaf and the connecting tunnel. When the automobile unloads gangue into the goaf, the gangue can slide conveniently into the goaf through the inclined chute, which reduces the gangue falling into the connecting tunnel on the one hand, and on the other hand, the inclined chute can play a certain buffering role, reducing the environmental pollution such as smoke and dust caused by the gangue falling into the goaf;

[0024] (3) The utility model provides an underground mine goaf automobile gangue discharge system, in which a top-lifting area is provided at the top of the connecting tunnel above the front side of the vehicle blocking device, so as to provide an escape space for the tilting and raising of the carriage when the automobile unloads gangue, thereby ensuring the stable unloading process;

[0025] (4) The utility model provides an underground mine goaf automobile waste removal system, in which circular rings mounted on vertical anchor rods are welded on both sides of an H-shaped steel. During installation, the vertical anchor rods can be installed first, and then the H-shaped steel can be installed between the vertical anchor rods by means of the circular rings mounted on the vertical anchor rods, thereby improving installation accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the planar structure of the gangue discharge system;

[0027] Figure 2 It is a schematic diagram of the side structure of the gangue discharge system;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the vehicle blocking device;

[0029] Figure 4 It is a schematic diagram of the side structure of the vehicle blocking device;

[0030] In the figure: 1. Goaf; 2. Waste rock; 3. Horizontal tunnel; 4. Connecting tunnel; 5. Inclined chute; 6. Top lifting area; 7. Vehicle blocking device; 71. H-shaped steel; 72. Horizontal anchor rod; 73. Vertical anchor rod; 8. Vehicle. DETAILED DESCRIPTION

[0031] Exemplary embodiments of the present invention are described in detail below. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope of the present invention. The more detailed description of the embodiments of the present invention below is not intended to limit the scope of the claimed present invention, but is merely for illustration and does not limit the description of the features and characteristics of the present invention, in order to propose the best way to perform the present invention, and is sufficient to enable those skilled in the art to implement the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

[0032] Example 1

[0033] like Figures 1 to 4 As shown, an underground mine goaf automobile waste rock discharge system includes a horizontal tunnel 3, a connecting tunnel 4 and a goaf 1 connected in sequence, the bottom height of the goaf 1 is lower than the bottom height of the connecting tunnel 4, and the automobile 8 passes through the horizontal tunnel 3 to dump the waste rock 2 from the construction of the underground mine development tunnel or chamber into the goaf 1 through the connecting tunnel 4.

[0034] Among them, goaf 1 is the goaf formed after the mine room is mined according to the underground mine design. The horizontal tunnel 3 and the connecting road 4 are special tunnels for underground mine production constructed according to the design. The upper section is semicircular or arched, and the lower section is rectangular. The cross-section size should meet the safety standards for underground production and construction vehicle transportation, ventilation, etc. The car 8 is a special standard transportation machine with underground mine safety signs configured according to the underground mine transportation capacity.

[0035] In order to ensure the safety of the vehicle 8 when unloading the gangue, a vehicle blocking device 7 is provided at the bottom of the connecting tunnel 4 near the goaf 1. Specifically, the vehicle blocking device 7 includes a pair of H-shaped steels 71 stacked up and down and placed horizontally, and a row of vertical anchor rods 73 are respectively provided on both sides of the H-shaped steel 71, which are close to the H-shaped steel 71 and anchored in the bottom of the connecting tunnel 4, and horizontal anchor rods 72 are welded at both ends of the H-shaped steel 71 and anchored in the side wall of the connecting tunnel 4.

[0036] In the specific design of each component of the vehicle blocking device 7, the height of a single H-shaped steel 71 is 280-320mm, 300mm in this embodiment, and the distance between its two ends and the side wall of the connecting tunnel 4 is 40-60mm, 50mm in this embodiment. The distance between two adjacent vertical anchor rods 73 is less than 500mm, 400mm in this embodiment, and the number of horizontal anchor rods 72 is not less than two, two in this embodiment. The diameter of the horizontal anchor rod 72 and the vertical anchor rod 73 is a round steel resin anchor rod of 20-25mm, 20mm in this embodiment, and the depth of the two anchors in the wall of the connecting tunnel 4 is 900-1100mm, 1000mm in this embodiment, and 500-700mm is exposed, 600mm in this embodiment.

[0037] By setting the vehicle stopper 7, the vehicle 8 can be blocked when the vehicle 8 unloads the gangue 2, preventing the vehicle 8 from sliding into the goaf 1 due to the inclination of the center of gravity when unloading the gangue 2. In particular, according to the environmental conditions of underground mine tunnels, the vehicle stopper 7 can be disassembled and installed by simple H-shaped steel 71 and anchor rods. The structure is simple and the strength is not low. It can be disassembled and used repeatedly, which effectively improves the work safety of unloading gangue to the goaf in mine production.

[0038] In addition, an inclined chute 5 is provided at the connection between the goaf 1 and the connecting tunnel 4. The inclination angle of the inclined chute 5 is 45-50°, 46° in this embodiment, the horizontal width is 2400-3000mm, 2600mm in this embodiment, and the distance between the vehicle blocking device 7 and the upper edge of the inclined chute 5 is 500mm-800mm, 600mm in this embodiment. When the vehicle 8 unloads the gangue 2 into the goaf 1, the gangue 2 can be conveniently slid into the goaf 1 through the inclined chute 5, which can reduce the gangue falling into the connecting tunnel 4 on the one hand, and on the other hand, the inclined chute 5 can play a certain buffering role, reducing the environmental pollution such as smoke and dust caused by the gangue 2 falling into the goaf 1.

[0039] At the same time, in this embodiment, a cantilevered area 6 is provided on the top of the connecting tunnel 4 above the front side of the vehicle stopper 7, which can provide an escape space for the tilting and lifting of the vehicle compartment when the vehicle 8 unloads the gangue 2, thereby ensuring the stable unloading process of the gangue 2. In the disassembly and assembly of the vehicle stopper 7, in this embodiment, circular rings sleeved on the vertical anchor rods 73 are welded on both sides of the H-shaped steel 71. During installation, the vertical anchor rods 73 can be installed first, and then the H-shaped steel 71 can be installed between the vertical anchor rods 73 through the circular rings sleeved on the vertical anchor rods 73, thereby improving the installation accuracy and efficiency.

[0040] In summary, the underground mine goaf area automobile waste rock removal system of this embodiment can effectively solve the safety hazard of the car sliding into the goaf and ensure the stable progress of the waste rock removal operation.

Claims

1. An underground mine goaf automobile waste rock removal system, comprising a horizontal tunnel (3), a connecting tunnel (4) and a goaf (1) connected in sequence, wherein the bottom height of the goaf (1) is lower than the bottom height of the connecting tunnel (4), and is characterized in that: The connecting tunnel (4) is provided with a vehicle stop device (7) at the bottom near the goaf (1); the vehicle stop device (7) comprises a pair of H-shaped steels (71) stacked up and down and placed horizontally, and a row of vertical anchor rods (73) are respectively arranged on both sides of the H-shaped steel (71) and are closely attached to the H-shaped steel (71) and anchored in the bottom of the connecting tunnel (4), and horizontal anchor rods (72) are welded at both ends of the H-shaped steel (71) and are anchored in the side wall of the connecting tunnel (4).

2. The underground mine goaf automobile waste removal system according to claim 1, characterized in that: The height of a single H-shaped steel (71) is 280-320 mm, and the distance between its two ends and the side wall of the connecting tunnel (4) is 40-60 mm.

3. The underground mine goaf automobile waste removal system according to claim 1, characterized in that: An inclined chute (5) is provided at the connection between the goaf (1) and the connecting tunnel (4).

4. The underground mine goaf automobile waste removal system according to claim 3, characterized in that: The inclined chute (5) has an inclination angle of 45-50° and a horizontal width of 2400-3000 mm.

5. The underground mine goaf automobile waste removal system according to claim 1, characterized in that: A cantilevered area (6) is provided on the top of the connecting lane (4) above the front side of the vehicle blocking device (7).

6. An underground mine goaf automobile waste removal system according to any one of claims 1 to 5, characterized in that: The number of the horizontal anchor rods (72) is not less than two.

7. An underground mine goaf automobile waste removal system according to any one of claims 1 to 5, characterized in that: The distance between two adjacent vertical anchor rods (73) is less than 500 mm.

8. An underground mine goaf automobile waste removal system according to any one of claims 1 to 5, characterized in that: Circular rings sleeved on the vertical anchor rods (73) are welded on both sides of the H-shaped steel (71).

9. An underground mine goaf automobile waste removal system according to any one of claims 1 to 5, characterized in that: The diameter of the horizontal anchor rod (72) and the vertical anchor rod (73) is 20-25 mm, and the depth of the two anchor rods in the wall of the connecting tunnel (4) is 900-1100 mm, with 500-700 mm exposed.

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