Coal mine underground deep hole blasting emulsion explosive charging device and method

Abstract

The invention discloses a coal mine underground deep hole blasting emulsion explosive charging device and method, and relates to the technical field of coal mine underground blasting, and the device comprises an explosive charging system, a power system and a hole sealing system; the explosive charging system comprises an explosive charging barrel, a driven barrel, a driven barrel buckle and a sealing cover, one end of the explosive charging barrel is an open end, the other end of the explosive charging barrel is provided with a pressure ventilation pipe connector, the driven barrel is arranged in the explosive charging barrel in a sliding mode, the driven barrel buckle is arranged on the explosive charging barrel and used for clamping the driven barrel inside, the driven barrel is used for being filled with emulsion explosive, and the sealing cover is arranged in the explosive charging barrel in a sliding mode. The sealing cover is located between the driven cylinder and the compressed air pipe connector. The power system comprises a pressure fan, a pressure ventilation pipe and an air outlet valve; the hole sealing system comprises a plugging device, an explosive loading device and an explosive conveying pipe; under the action of the power system, explosive can be charged in the blast hole through the explosive charging system, and the hole opening of the blast hole can be blocked through the hole sealing system. The emulsion explosive loading device can achieve rapid explosive loading, is easy to operate, saves time and labor and can solve the problem of hole clamping in the emulsion explosive loading process.

Description

Technical Field

[0001] The invention relates to the technical field of underground coal mine blasting, in particular to an emulsion explosive charging device and method for deep hole blasting in underground coal mines. Background Art

[0002] During the mining process, coal will encounter various geological structures, and the strength of the geological structure is much greater than the strength of the coal seam. When cutting geological structures, coal mining machines and multi-purpose excavators often encounter problems such as slow cutting speed, serious consumption of cutting teeth, damage to cutting heads, high maintenance costs, and long maintenance time, which seriously affect the coal mining speed and tunnel excavation footage, and thus affect the continuity and output of production. In order to solve the problem of coal mining machines and multi-purpose excavators advancing difficulties, the shallow hole blasting method is generally used at this stage. Shallow hole blasting can generally weaken about 2m of hard rock at a time, with a large number of blasting cycles, long auxiliary operations, and large negative risks and impacts caused by the large number of blasting times. Therefore, in order to improve the efficiency of coal mining faces passing through geological structures and the footage of excavation faces, a deep hole blasting method is proposed. Deep hole blasting is generally a blasting technology with a borehole diameter greater than 75mm and a hole depth greater than 5m. Compared with shallow hole blasting, deep hole blasting has the advantages of small unit drilling volume, low unit explosive consumption, high production efficiency, etc., but it also has the problem of large charge volume in a single blast hole and difficulty in charging. In order to solve the above problems, in the existing technology: Chinese patent (CN112696999A) discloses a charging device and charging method for deep hole blasting, the device comprises a charging tube, a stuffing tube, a pull rope, a rope clamp, a plug and other components, the charging tube is filled with emulsion explosives, the stuffing tube is filled with stuffing, and a plurality of charging tubes and stuffing tubes are pushed to a set position by a gun stick. When a blind shot occurs, the stuffing tube and charging tube in the blast hole are taken out by a pull rope. Chinese patent (CN108106506A) discloses a deep hole blasting intrinsically safe rapid charging device, which includes a guide head, a tail plug, a PVC tube body, a safety rope and other components. The guide head is used to reduce the resistance of charging, the tail plug is convenient for sealing the hole, the PVC tube body adjusts the number of tube bodies according to the amount of charging, and the safety rope can quickly pull out the drug roll in the event of an accident such as a stuck blast hole, a broken blasting line or a detonating cord. Chinese patent (CN109000517A) discloses a blasting tube for deep hole blasting, which includes a leading device, a charging device and a drug delivery device. The leading device is a hollow conical plug, and two through holes are symmetrically opened on the side wall of the conical plug, and an oil wire rope passes through the through hole. The charging device is a hollow cylindrical charging tube, and the drug delivery device is a drug delivery rod. The explosive is plugged into the charging tube, the front end is connected to the leading device, and the rear end is connected to the tail plug, and then the drug delivery device is used to deliver the blasting tube to the designated position. The Chinese patent (CN110196003B) provides a deep hole blasting rapid charging device and charging method, which is specifically composed of multiple charging units connected end to end, the charging unit includes a charging tube, a detonating cord and an explosive roll, and a sealing plug is placed at the head and tail of the charging device. Then it is first manually pushed into the borehole quickly, and then the charging device is pushed again as a whole to the predetermined position of the borehole using a through-hole device.

[0003] The existing Chinese patent (CN112696999A) has a complex structure, many operating steps, and is time-consuming and labor-intensive. Chinese patents (CN108106506A), (CN109000517A) and (CN110196003B) all have the problem of too long length of one-time charge. First, it is difficult to send the explosive to the designated position by artificial methods if the one-time charge is too long, and the underground blast hole often has an upward slope, so it is even more impossible to achieve a one-time charge that is too long. Secondly, too long charge will cause the charge device to "get stuck" in the blast hole. Because the blast hole is deep when drilling a hole in the underground working face, many drill rods need to be connected during the drilling process, so the blast hole cannot be completely straight, so the charge device is too long, which will cause warping and "get stuck". In addition, every time the next drill rod is connected during the drilling process, a deep drill mark will be formed on the wall of the blast hole, and when the charge cartridge is stuck on the drill mark, it will also get stuck in the blast hole. Moreover, the above-mentioned "stuck hole" phenomenon cannot be pulled out by using the so-called safety rope. Even if it is pulled out, it still cannot be installed into the gun hole. Summary of the invention

[0004] The purpose of the present invention is to provide an emulsion explosive charging device and method for deep hole blasting in coal mines to solve the problems existing in the above-mentioned prior art, which can realize rapid charging, simple operation, save time and labor, and overcome the "stuck hole" problem in the emulsion explosive charging process.

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

[0006] The present invention provides an emulsion explosive charging device for deep hole blasting in coal mines, comprising a charging system, a power system and a sealing system;

[0007] The charging system comprises a charging barrel, a quilt barrel, a quilt barrel buckle and a sealing cover. One end of the charging barrel is an open end, and the other end is provided with a compressed air pipe interface. The quilt barrel is slidably arranged in the charging barrel. The quilt barrel buckle is arranged on the charging barrel for clamping the quilt barrel inside. The quilt barrel is used to load emulsion explosives. The sealing cover is slidably arranged in the charging barrel, and the sealing cover is located between the quilt barrel and the compressed air pipe interface.

[0008] The power system includes an air compressor, an air pressure pipe and an air outlet valve, wherein the air outlet of the air compressor is connected to one end of the air pressure pipe, the other end of the air pressure pipe can be connected to the air pressure pipe interface, and the air outlet valve is arranged on the air pressure pipe;

[0009] Under the wind pressure of the air compressor, the sealing cover can push the quilt into the blast hole, and when the sealing cover moves to contact the quilt buckle, the quilt buckle can block the sealing cover;

[0010] The sealing system includes a plugger, a charge loader and a drug delivery tube. The plugger is used to separate explosives and sealing materials. The other end of the compressed air tube can also be connected to the air inlet of the charge loader. The discharge port of the charge loader is connected to the drug delivery tube. Under the action of the air compressor, the sealing material in the charge loader can be filled through the drug delivery tube and seal the blast hole.

[0011] In one embodiment, the quilt tube has a length of 1500mm, an outer diameter of 75mm, and an inner diameter of 71mm; the sealing cover has a diameter of 75.5m and a thickness of 2mm; the drug-filled tube has a length of 155mm, an outer diameter of 78mm, and an inner diameter of 75.5mm; the height of the quilt tube buckle is 2.5mm; the length of the compressed air pipe interface is 100mm, the outer diameter is 31.5mm, and the inner diameter is 26mm.

[0012] In one embodiment, the quilt tube is made of PVC; the sealing cover is made of stainless steel; the medicine-filled tube is made of aluminum alloy; the quilt tube buckle is made of aluminum alloy; and the compressed air pipe interface is made of aluminum alloy.

[0013] In one embodiment, the medicine-loading cartridge, the cartridge buckle and the air pressure pipe interface are an integrated structure.

[0014] In one embodiment, the drug delivery tube is an antistatic tube, and the occluder is made of rubber.

[0015] In one embodiment, the drug delivery tube is an antistatic PVC tube.

[0016] In one embodiment, the compressed air pipe and the compressed air pipe interface are connected and fixed by a compressed air pipe buckle.

[0017] The present invention also provides a method for charging emulsion explosives for deep hole blasting in coal mines, based on the above-mentioned device for charging emulsion explosives for deep hole blasting in coal mines, comprising the following steps:

[0018] Step 1: According to the rock properties and range of the blasting area in the coal mine, complete the deep hole blasting design, determine the length of the blast hole, complete the drilling and drainage work in the blasting area, and prepare the blasting materials;

[0019] Step 2: Connect the compressed air pipe to the compressed air pipe interface and fix it;

[0020] Step 3: loading the emulsion explosive into the cartridge, placing the sealing cover into the charge cartridge, loading the cartridge filled with explosive into the charge cartridge, and clamping the cartridge with the cartridge buckle;

[0021] Step 4: Use the compressed air pipe to push the charge system to the bottom of the blast hole, and then pull it outward by a set distance; during the process of pushing the charge system, if a "stuck hole" phenomenon occurs, twist the compressed air pipe and push the charge system again;

[0022] Step 5: Open the air outlet valve, start the air compressor, and use the sealing cover to push the cartridge into the blast hole under the action of wind pressure. The sealing cover is blocked by the cartridge buckle and continues to stay in the charge cartridge. Close the air compressor and the air outlet valve, and pull the compressed air pipe out of the blast hole.

[0023] Step 6: Repeat steps 3 to 5 until the charge amount at the bottom of the hole meets the design requirements of deep hole blasting, then load the emulsion explosive into the quilt and install the detonating electronic detonator, load the quilt with the detonating electronic detonator into the charge cylinder and clamp the quilt with the quilt buckle, lead the detonator foot line out of the blast hole, and deliver the quilt loaded with explosives and detonating electronic detonator to the designated position of the blast hole according to steps 4 and 5;

[0024] Step 7: Repeat steps 3 to 5 until the charge in the blasthole meets the design requirements for deep hole blasting;

[0025] Step 8: Push the plugging device to the charge section of the blast hole by using the drug delivery tube, and connect the air inlet of the charge device to the air outlet end of the compressed air pipe;

[0026] Step nine: Load the sealing material into the charge loader, and move the drug delivery tube outward from the blast hole one by one. Each time the drug delivery tube is moved outward, the sealing material is loaded into the blast hole section corresponding to the outward movement distance of the drug delivery tube through the compressed air system until the blast hole is sealed.

[0027] In one embodiment, the sealing material is loess or a mixture of loess, sand and cement.

[0028] In one embodiment, there are four detonating electronic detonators in total, two of which have their energy-focusing holes facing the bottom of the hole, and the other two have their energy-focusing holes facing the hole mouth.

[0029] Compared with the prior art, the present invention has achieved the following technical effects:

[0030] The present invention can realize rapid charging, is simple to operate, saves time and effort, and if a "stuck hole" phenomenon occurs during the charging process, the charging system can be twisted to smoothly pass through the "stuck hole" position, thereby overcoming the "stuck hole" problem during the charging process of emulsion explosives.

[0031] The invention utilizes the wind pressure system in the coal mine underground to realize the automation of charging and plugging, which not only makes charging and plugging fast but also improves the plugging quality, and deep hole blasting is not easy to punch holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of charging using the emulsion explosive charging device for deep hole blasting in coal mines according to an embodiment of the present invention;

[0034] Figure 2 It is a schematic diagram of using the coal mine underground deep hole blasting emulsion explosive charging device in the embodiment of the present invention to seal the blast hole;

[0035] Figure 3 It is a schematic diagram of the structure of the charge charging system in an embodiment of the present invention.

[0036] In the figure: 1-rock, 2-blast hole, 3-emulsion explosive, 4-quilt, 5-sealing cover, 6-charged cartridge, 7-quilt buckle, 8-air pressure pipe interface, 9-air pressure pipe buckle, 10-air pressure pipe, 11-air compressor, 12-air outlet valve, 13-detonating electronic detonator, 14-detonator foot line, 15-charge delivery tube, 16-plugger, 17-charger, 18-sealing material. DETAILED DESCRIPTION

[0037] 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.

[0038] The purpose of the present invention is to provide an emulsion explosive charging device and method for deep hole blasting in coal mines to solve the problems existing in the prior art, realize rapid charging, simple operation, save time and effort, and overcome the "stuck hole" problem in the emulsion explosive charging process.

[0039] 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.

[0040] Embodiment 1

[0041] like Figure 1-Figure 3As shown, this embodiment provides an emulsion explosive charging device for deep hole blasting in coal mines, including a charging system, a power system and a sealing system;

[0042] The charging system comprises a charging barrel 6, a quilt barrel 4, a quilt barrel buckle 7 and a sealing cover 5. One end of the charging barrel 6 is an open end, and the other end is provided with a compressed air pipe interface 8. The quilt barrel 4 is slidably arranged in the charging barrel 6. The quilt barrel buckle 7 is arranged on the charging barrel 6 for clamping the internal quilt barrel 4. The quilt barrel 4 is used for filling the emulsion explosive 3. The sealing cover 5 is slidably arranged in the charging barrel 6, and the sealing cover 5 is located between the quilt barrel 4 and the compressed air pipe interface 8.

[0043] The power system includes a compressor 11, a compressed air pipe 10 and an air outlet valve 12. The air outlet of the compressor 11 is connected to one end of the compressed air pipe 10, and the other end of the compressed air pipe 10 can be connected to the compressed air pipe interface 8. The air outlet valve 12 is arranged on the compressed air pipe 10.

[0044] Under the wind pressure of the air compressor 11, the sealing cover 5 can push the quilt 4 into the blast hole 2. When the sealing cover 5 moves to contact the quilt buckle 7, the quilt buckle 7 can block the sealing cover 5.

[0045] The sealing system includes a plugger 16, a charge loader 17 and a drug delivery pipe 15. The plugger 16 is used to separate the explosive and the sealing material 18. The other end of the compressed air pipe 10 can also be connected to the air inlet of the charge loader 17. The discharge port of the charge loader 17 is connected to the drug delivery pipe 15. Under the action of the air compressor 11, the sealing material 18 in the charge loader 17 can be filled through the drug delivery pipe 15 and seal the orifice of the blast hole 2.

[0046] In this embodiment, the power system provides stable wind power for the charging system and the sealing system, wherein the air compressor 11 is an air compressor permitted for coal mines, capable of providing a working wind pressure of 0.24 to 0.45 MPa, and the compressed air pipe 10 is an anti-static PVC pipe with an inner diameter of 32 mm.

[0047] In this embodiment, the length of the quilt tube 4 is 1500mm, the outer diameter is 75mm, and the inner diameter is 71mm; the diameter of the sealing cover 5 is 75.5mm, and the thickness is 2mm; the length of the drug cartridge 6 is 155mm, the outer diameter is 78mm, and the inner diameter is 75.5mm; the height of the quilt tube buckle 7 is 2.5mm; the length of the compressed air pipe interface 8 is 100mm, the outer diameter is 31.5mm, and the inner diameter is 26mm. The material of the quilt tube 4 is PVC; the material of the sealing cover 5 is stainless steel; the material of the drug cartridge 6 is aluminum alloy; the material of the quilt tube buckle 7 is aluminum alloy; the material of the compressed air pipe interface 8 is aluminum alloy. The drug cartridge 6, the quilt tube buckle 7 and the compressed air pipe interface 8 are an integrated structure.

[0048] In this embodiment, the drug delivery tube 15 is an antistatic tube, preferably an antistatic PVC tube, with an inner diameter of 34 mm; the occluder 16 is made of rubber.

[0049] In this embodiment, the compressed air pipe 10 is connected and fixed to the compressed air pipe interface 8 via a compressed air pipe buckle 9. The installation and disassembly are convenient and quick.

[0050] Embodiment 2

[0051] This embodiment provides a method for charging emulsion explosives for deep hole blasting in a coal mine, based on the device for charging emulsion explosives for deep hole blasting in a coal mine described in the first embodiment, comprising the following steps:

[0052] Step 1: According to the lithology and range of the rock 1 in the underground blasting area of ​​the coal mine, complete the deep hole blasting design, determine the length of the blast hole 2, complete the drilling and drainage work in the blasting area, and prepare the blasting materials;

[0053] Step 2: Connect the compressed air pipe 10 to the compressed air pipe interface 8 and fix it;

[0054] Step 3: Load the emulsion explosive 3 into the quilt 4, place the sealing cover 5 into the charge cylinder 6, then load the quilt 4 filled with explosives into the charge cylinder 6, and clamp the quilt 4 with the quilt buckle 7;

[0055] Step 4: Use the compressed air pipe 10 to push the charging system to the bottom of the blast hole 2, and then pull it out 50 cm; in the process of pushing the charging system, if the "hole stuck" phenomenon occurs, twist the compressed air pipe 10, and then push the charging system; because when twisting the compressed air pipe 10, the tube 4 will also be twisted at an angle, thereby avoiding the "hole stuck" phenomenon caused by the blast hole 2 being not straight or the tube 4 being stuck on the drill mark;

[0056] Step 5: Open the air outlet valve 12, start the air compressor 11, and use the sealing cover 5 to push the cartridge 4 into the blast hole 2 under the action of wind pressure. The sealing cover 5 is blocked by the cartridge buckle 7 and continues to stay in the charge cartridge 6. Close the air compressor 11 and the air outlet valve 12, and pull the compressed air pipe 10 out of the blast hole 2;

[0057] Step 6: Repeat steps 3 to 5 until the charge amount at the bottom of the hole meets the design requirements of deep hole blasting, then load the emulsion explosive 3 into the quilt tube 4 and install the detonating electronic detonator 13, load the quilt tube 4 with the detonating electronic detonator 13 into the charge tube 6 and clamp the quilt tube 4 with the quilt tube buckle 7, lead the detonator foot line 14 out of the blasthole 2, and deliver the quilt tube 4 loaded with explosives and the detonating electronic detonator 13 to the specified position of the blasthole 2 according to steps 4 and 5;

[0058] Step 7: Repeat steps 3 to 5 until the charge in the blasthole meets the design requirements for deep hole blasting;

[0059] Step 8: Use the anti-static drug delivery tube 15 to push the plugging device 16 to the charging section of the blast hole 2, and connect the air inlet of the charging device 17 to the air outlet end of the compressed air pipe 10;

[0060] Step 9: Load the sealing material 18 into the charge loader 17, and gradually move the drug delivery tube 15 outward from the blast hole. Each time the drug delivery tube 15 moves outward, the sealing material 18 is filled in the blast hole section corresponding to the outward distance of the drug delivery tube 15 through the compressed air system until the blast hole 2 is sealed. The drug delivery tube 15 moves outward 2 meters each time, and 2 meters of sealing material 18 is filled in the blast hole 2 each time, until the blast hole 2 is fully blocked with the sealing material 18.

[0061] In this embodiment, the sealing material 18 is loess or a mixture of loess, sand and cement. The loess is sieved and then loaded into the drug loading device 17 to prevent the drug delivery tube 15 from being blocked due to the agglomeration of the loess during the sealing process.

[0062] In this embodiment, there are four detonating electronic detonators 13 in total, the energy-gathering holes of two detonating electronic detonators 13 face the bottom of the hole, and the energy-gathering holes of the other two detonating electronic detonators 13 face the hole mouth.

[0063] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An emulsion explosive charging device for deep hole blasting in coal mines, characterized by: Including charging system, power system and sealing system; The charging system comprises a charging barrel, a quilt barrel, a quilt barrel buckle and a sealing cover. One end of the charging barrel is an open end, and the other end is provided with a compressed air pipe interface. The quilt barrel is slidably arranged in the charging barrel. The quilt barrel buckle is arranged on the charging barrel for clamping the quilt barrel inside. The quilt barrel is used to load emulsion explosives. The sealing cover is slidably arranged in the charging barrel, and the sealing cover is located between the quilt barrel and the compressed air pipe interface. The power system includes an air compressor, an air pressure pipe and an air outlet valve, wherein the air outlet of the air compressor is connected to one end of the air pressure pipe, the other end of the air pressure pipe can be connected to the air pressure pipe interface, and the air outlet valve is arranged on the air pressure pipe; Under the wind pressure of the air compressor, the sealing cover can push the quilt into the blast hole, and when the sealing cover moves to contact the quilt buckle, the quilt buckle can block the sealing cover; The sealing system includes a plugger, a charge loader and a drug delivery tube. The plugger is used to separate explosives and sealing materials. The other end of the compressed air tube can also be connected to the air inlet of the charge loader. The discharge port of the charge loader is connected to the drug delivery tube. Under the action of the air compressor, the sealing material in the charge loader can be filled through the drug delivery tube and seal the blast hole.

2. The emulsion explosive charging device for deep hole blasting in coal mines according to claim 1, characterized in that: The length of the quilt tube is 1500mm, the outer diameter is 75mm, and the inner diameter is 71mm; the diameter of the sealing cover is 75.5m, and the thickness is 2mm; the length of the medicine-filled tube is 155mm, the outer diameter is 78mm, and the inner diameter is 75.5mm; the height of the quilt tube buckle is 2.5mm; the length of the compressed air pipe interface is 100mm, the outer diameter is 31.5mm, and the inner diameter is 26mm.

3. The emulsion explosive charging device for deep hole blasting in coal mines according to claim 1, characterized in that: The quilt tube is made of PVC; the sealing cover is made of stainless steel; the medicine-filled tube is made of aluminum alloy; the quilt tube buckle is made of aluminum alloy; and the compressed air pipe interface is made of aluminum alloy.

4. The emulsion explosive charging device for deep hole blasting in coal mines according to claim 3, characterized in that: The medicine-loading cylinder, the cylinder buckle and the air pressure pipe interface are an integrated structure.

5. The emulsion explosive charging device for deep hole blasting in coal mines according to claim 1, characterized in that: The drug delivery tube is an antistatic tube, and the occluder is made of rubber.

6. The emulsion explosive charging device for deep hole blasting in coal mines according to claim 5, characterized in that: The medicine delivery tube is an antistatic PVC tube.

7. The emulsion explosive charging device for deep hole blasting in coal mines according to claim 1, characterized in that: The compressed air pipe and the compressed air pipe interface are connected and fixed by a compressed air pipe buckle.

8. A method for charging emulsion explosives for deep hole blasting in coal mines, characterized in that: The coal mine underground deep hole blasting emulsion explosive charging device according to any one of claims 1 to 7 comprises the following steps: Step 1: According to the rock properties and range of the blasting area in the coal mine, complete the deep hole blasting design, determine the length of the blast hole, complete the drilling and drainage work in the blasting area, and prepare the blasting materials; Step 2: Connect the compressed air pipe to the compressed air pipe interface and fix it; Step 3: loading the emulsion explosive into the cartridge, placing the sealing cover into the charge cartridge, loading the cartridge filled with explosive into the charge cartridge, and clamping the cartridge with the cartridge buckle; Step 4: Use the compressed air pipe to push the charge system to the bottom of the blast hole, and then pull it outward by a set distance; during the process of pushing the charge system, if a "stuck hole" phenomenon occurs, twist the compressed air pipe and push the charge system again; Step 5: Open the air outlet valve, start the air compressor, and use the sealing cover to push the cartridge into the blast hole under the action of wind pressure. The sealing cover is blocked by the cartridge buckle and continues to stay in the charge cartridge. Close the air compressor and the air outlet valve, and pull the compressed air pipe out of the blast hole. Step 6: Repeat steps 3 to 5 until the charge amount at the bottom of the hole meets the design requirements of deep hole blasting, then load the emulsion explosive into the quilt and install the detonating electronic detonator, load the quilt with the detonating electronic detonator into the charge cylinder and clamp the quilt with the quilt buckle, lead the detonator foot line out of the blast hole, and deliver the quilt loaded with explosives and detonating electronic detonator to the designated position of the blast hole according to steps 4 and 5; Step 7: Repeat steps 3 to 5 until the charge in the blasthole meets the design requirements for deep hole blasting; Step 8: Push the plugging device to the charge section of the blast hole by using the drug delivery tube, and connect the air inlet of the charge device to the air outlet end of the compressed air pipe; Step nine: Load the sealing material into the charge loader, and move the drug delivery tube outward from the blast hole one by one. Each time the drug delivery tube is moved outward, the sealing material is loaded into the blast hole section corresponding to the outward movement distance of the drug delivery tube through the compressed air system until the blast hole is sealed.

9. The method for charging emulsion explosives for deep hole blasting in coal mines according to claim 8, characterized in that: The sealing material is loess or a mixture of loess, sand and cement.

10. The method for charging emulsion explosives for deep hole blasting in coal mines according to claim 8, characterized in that: There are four detonating electronic detonators in total, the energy-gathering holes of two detonating electronic detonators face the bottom of the hole, and the energy-gathering holes of the other two detonating electronic detonators face the hole mouth.

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