Blasting jet flow dredging device for blockage of winze of underground mine

Abstract

The utility model discloses an underground mine draw shaft blockage blasting jet flow dredging device which comprises an aluminum metal pipe, a plurality of aluminum metal energy-gathering covers are arranged at the blasting top end of the aluminum metal pipe, emulsion explosives are arranged at the tail end of the aluminum metal pipe, and the number of the aluminum metal energy-gathering covers and the number of the emulsion explosives are multiple. The aluminum metal energy gathering cover and the emulsion explosive are sequentially arranged in a penetrating mode and connected end to end, the aluminum metal pipe is installed in the conveying mine channel through the fixing assembly, and the conveying mine channel is connected with a draw shaft discharging opening and a conveying roadway. According to the utility model, the aluminum metal energy-gathering cover enables detonation products generated at the moment of emulsion explosive explosion to be gathered on the central axis at a high speed to form high-energy energy-gathering flow, and the energy-gathering flow accurately destroys a large stone to be blasted along the orientation of the aluminum metal tube, so that the destructive effect on local parts of an object in a specific direction is improved to a great extent; the blasting success rate is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine blasting, in particular to an underground mine chute blockage blasting jet dredging device. Background Art

[0002] At present, underground mines mainly use chute transportation to lower ore. The blasted ore and waste rock are transported to various transport chutes in each middle section and layer. The mine cars in the middle section of the transportation receive the materials at the lower chute mouth, and then the ore and waste rock are transported to the unloading station at the bottom of the main shaft or the surface by the mine cars. The ore and waste rock after blasting are of different sizes and specifications. The ore and waste rock collide and squeeze each other during the chute lowering process. If the lower part of the chute is not discharged in time, large rocks will block the lower part of the chute mouth. Even if the vibrating ore discharger is started, the large rocks cannot be removed from the lower part of the chute, and the transportation of ore and waste rock in the chute will be interrupted. Therefore, in order to ensure normal transportation, the large rocks need to be blasted and disintegrated.

[0003] According to the regulations of the "Safety Regulations for Blasting" (GB 6722-2014), naked blasting is strictly prohibited. Large rocks need to be drilled and blasted to remove them. However, in actual blasting, when the perforators are drilling holes at the bottom of the chute, large rocks are easily loosened, and there is a risk of sudden eruption of large rocks at the chute, which may endanger the personal safety of miners and cause damage to facilities such as mine cars and vibrating ore-feeding machines. Utility Model Content

[0004] The utility model aims to provide an underground mine chute blockage blasting jet dredging device. By arranging an aluminum metal tube filled with emulsion explosives and an aluminum metal energy-gathering cover in the conveying mine tunnel, the blasting energy is largely concentrated on the large rocks to be blasted, the blasting effect is good, and there is no need for manual perforation blasting in the conveying mine tunnel, thus ensuring the personal safety of personnel and solving the problems in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for clearing underground mine chute blockage by blasting jet, comprising an aluminum metal tube, wherein an aluminum metal energy-gathering cover is arranged at the blasting top end of the aluminum metal tube, and an emulsion explosive is arranged at the tail end of the aluminum metal tube. A plurality of aluminum metal energy-gathering covers and emulsion explosives are arranged in total, and the aluminum metal energy-gathering covers and the emulsion explosives are arranged in sequence and connected end to end. The aluminum metal tube is installed in a conveying mine tunnel through a fixing assembly, and the conveying mine tunnel connects the chute discharge port and the transport tunnel.

[0007] Preferably, the aluminum metal energy focusing cover is a conical structure, the cone bottom diameter of the aluminum metal energy focusing cover is 38 mm, the cone height is 4 cm, the cone bottom of the aluminum metal energy focusing cover faces the boulder to be blasted, and the cone tip of the aluminum metal energy focusing cover faces the emulsion explosive.

[0008] Preferably, the outer diameter of the aluminum metal tube is 40 mm and the inner diameter is 38 mm.

[0009] Preferably, a digital electronic detonator is provided in the emulsion explosive.

[0010] Preferably, the tail end of the aluminum metal tube is sealed with cannon mud.

[0011] Preferably, the fixing components are arranged in no less than two groups and are arranged along the extension direction of the aluminum metal tube, each group of fixing components includes two fixing blocks, two support rods and two clamping clamps, the fixing blocks are symmetrically arranged on the two side walls of the conveying mine tunnel, the fixing blocks are connected to support rods, and clamping clamps are provided on the top of the support rods.

[0012] Preferably, the clamping pliers are symmetrically arranged and an aluminum metal pipe passes through the two clamping pliers, and the clamping pliers are connected by bolts.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. In the utility model, the aluminum metal energy-gathering cover gathers the detonation products generated by the explosion of the emulsion explosive at a high speed on the central axis, forming a high-energy energy-gathering flow. The energy-gathering flow precisely destroys the boulders to be blasted along the direction of the aluminum metal tube, greatly improving the local destructive effect on the object in a specific direction, and effectively improving the success rate of blasting.

[0015] 2. The utility model uses aluminum metal pipes to penetrate deep into the mine tunnel to blast large rocks, without the need for manual entry to perforate the large rocks. This not only ensures the personal safety of the workers, but also simplifies the operating process, improves construction efficiency, and ensures smooth ore transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the arrangement of the lower chute blocking and dredging device of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the aluminum metal tube of the utility model;

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the longitudinal section along the middle AA;

[0019] Figure 4 It is a schematic diagram of the fixing assembly of the utility model;

[0020] Figure 5 It is a schematic diagram of the clamping pliers of the present utility model.

[0021] In the figure: 1. chute; 2. ore; 3. large rocks to be blasted; 4. vibrating ore-dumping machine; 5. conveying mine tunnel; 6. transport tunnel; 7. U-shaped mine car; 8. aluminum metal pipe; 9. aluminum metal energy-gathering cover; 10. emulsion explosive; 11. digital electronic detonator; 12. gun mud; 13. fixing block; 14. support rod; 15. clamping pliers; 16. bolts. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to solve the problem that the existing technology requires manual drilling of blasting rocks, which leads to greater safety hazards and low blasting efficiency, the following technical solution is given. Please refer to Figure 1-5 ;

[0024] A device for blasting jet dredging for blocking underground mine chute comprises an aluminum metal tube 8, the blasting end of the aluminum metal tube 8 is aimed at the center of a large stone 3 to be blasted, the blasting top of the aluminum metal tube 8 is provided with an aluminum metal energy-gathering cover 9, the tail end of the aluminum metal tube 8 is provided with an emulsion explosive 10, a total of a plurality of aluminum metal energy-gathering covers 9 and emulsion explosives 10 are provided, the aluminum metal energy-gathering covers 9 and emulsion explosives 10 are interspersed in sequence and connected end to end; a digital electronic detonator 11 is provided in the emulsion explosive 10, and the emulsion explosive 10 is detonated by the digital electronic detonator 11; the outer diameter of the aluminum metal tube 8 is 40 mm, the inner diameter is 38 mm, and the length is determined according to the actual situation on site; the tail end of the aluminum metal tube 8 is sealed with a pipe opening by gun mud 12.

[0025] The aluminum metal energy focusing cover 9 is a conical structure. The cone bottom diameter of the aluminum metal energy focusing cover 9 is 38 mm, the cone height is 4 cm, the cone bottom of the aluminum metal energy focusing cover 9 faces the large rock 3 to be blasted, and the cone tip of the aluminum metal energy focusing cover 9 faces the emulsion explosive 10.

[0026] Specifically, the use of the aluminum metal energy-gathering cover 9 can make the detonation products generated by the explosion of the emulsion explosive 10 at the moment of detonation gather at high speed on the central axis, thereby forming a high-energy energy-gathering flow, which greatly improves the destruction of the large rocks 3 to be blasted in a specific direction, and utilizes the energy-gathering effect of the explosion energy to ensure that the blasting energy can be concentrated on the large rocks 3 to be blasted, so that the ore 2 and the large rocks 3 to be blasted can be discharged smoothly, ensuring that the chute 1 and the conveying mine 5 can transport the ore 2 normally, ensuring the normal production of the underground mine, and avoiding the explosion of exposed explosives to cause damage to the lower part of the chute 1 and the vibrating ore discharger 4.

[0027] The conveying mine tunnel 5 connects the discharge port of the chute 1 and the transport tunnel 6. A vibrating ore-discharging machine 4 is provided at the bottom of the conveying mine tunnel 5. A U-shaped mine car 7 is provided in the transport tunnel 6. The U-shaped mine car 7 is located at the bottom of the transmission terminal of the vibrating ore-discharging machine 4. After the blasting large stone 3 is crushed, the vibrating ore-discharging machine 4 is started to make the crushed stone of the blasting large stone 3 and the ore 2 in the chute 1 be lowered into the U-shaped mine car 7, and transported to the unloading station or the surface industrial site by the U-shaped mine car 7.

[0028] The aluminum metal pipe 8 is installed in the conveying tunnel 5 through a fixing assembly. No less than two groups of fixing assemblies are provided and are arranged along the extension direction of the aluminum metal pipe 8. Each group of fixing assemblies includes two fixing blocks 13, two support rods 14 and two clamping clamps 15. The fixing blocks 13 are symmetrically arranged on the two side walls of the conveying tunnel 5, and the support rods 14 are connected to the fixing blocks 13. The top of the support rods 14 is provided with a clamping clamp 15; the clamping clamps 15 are symmetrically arranged and the aluminum metal pipe 8 is passed through the two clamping clamps 15. At this time, the bolts 16 are tightened to make the clamping clamps 15 close to each other and thereby clamp the aluminum metal pipe 8.

[0029] According to the size of the large rock 3 to be blasted at the lower outlet of the chute 1, the specifications of the aluminum metal tube 8 and the aluminum metal energy-gathering cover 9 of appropriate length are selected; according to different working heights, the positions of the aluminum metal energy-gathering cover 9 and the emulsion explosive 10 can be adjusted at any time.

[0030] Working principle: The aluminum metal energy-gathering cover 9 gathers the detonation products generated by the explosion of the emulsion explosive 10 at a high speed on the central axis, forming a high-energy energy-gathering flow. The energy-gathering flow precisely destroys the large rock 3 to be blasted along the direction of the aluminum metal tube 8, and utilizes the energy-gathering effect of the explosion energy to ensure that the blasting energy is concentrated on the large rock 3 to be blasted, so that the large rock 3 to be blasted is transformed into crushed stone and discharged smoothly, ensuring the smooth flow of the chute 1 and the conveying mine 5, and ensuring the normal production of the underground mine.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underground mine chute blockage blasting jet dredging device, comprising an aluminum metal pipe (8), characterized in that: The blasting top of the aluminum metal tube (8) is provided with an aluminum metal energy-gathering cover (9), and the tail end of the aluminum metal tube (8) is provided with an emulsion explosive (10). A plurality of aluminum metal energy-gathering covers (9) and emulsion explosives (10) are provided in total. The aluminum metal energy-gathering covers (9) and the emulsion explosives (10) are arranged in sequence and are connected end to end. The aluminum metal tube (8) is installed in a conveying mine tunnel (5) through a fixing assembly, and the conveying mine tunnel (5) connects a discharge port of a chute (1) and a transport tunnel (6).

2. The underground mine chute blockage blasting jet dredging device according to claim 1 is characterized in that: The aluminum metal energy focusing cover (9) is a conical structure, the cone bottom diameter of the aluminum metal energy focusing cover (9) is 38 mm, the cone height is 4 cm, the cone bottom of the aluminum metal energy focusing cover (9) faces the large rock (3) to be blasted, and the cone tip of the aluminum metal energy focusing cover (9) faces the emulsion explosive (10).

3. The underground mine chute blockage blasting jet dredging device according to claim 2 is characterized in that: The aluminum metal tube (8) has an outer diameter of 40 mm and an inner diameter of 38 mm.

4. The underground mine chute blockage blasting jet dredging device according to claim 3 is characterized in that: The emulsion explosive (10) is provided with a digital electronic detonator (11).

5. The underground mine chute blockage blasting jet dredging device according to claim 4 is characterized in that: The tail end of the aluminum metal tube (8) is sealed with taphole mud (12).

6. The underground mine chute blockage blasting jet dredging device according to claim 5, characterized in that: The fixing components are arranged in at least two groups and are arranged along the extension direction of the aluminum metal tube (8). Each group of the fixing components includes two fixing blocks (13), two support rods (14) and two clamping pliers (15). The fixing blocks (13) are symmetrically arranged on the two side walls of the conveying mine tunnel (5). The fixing blocks (13) are connected to the support rods (14). The top ends of the support rods (14) are provided with clamping pliers (15).

7. The underground mine chute blockage blasting jet dredging device according to claim 6, characterized in that: The clamping clamps (15) are symmetrically arranged and an aluminum metal pipe (8) passes through the two clamping clamps (15). The clamping clamps (15) are connected by bolts (16).

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