Roll-shaped emulsion explosive feeding device for deep hole blasting in underground coal mine
By combining the design of the air pressure mechanism and the charging cartridge, the efficient and safe delivery of rolled emulsion explosives in deep holes is achieved, solving the problem of difficult charging in deep hole pre-splitting blasting and improving charging efficiency and safety.
Patent Information
- Application Number
- CN202520568049.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-28
AI Technical Summary
In the process of deep-hole pre-splitting blasting in underground coal mines, problems such as borehole deformation, hole collapse, and cartridge jamming lead to difficulties in loading explosives and pose safety hazards, which are difficult to be effectively solved by existing explosive delivery devices.
Design a delivery device that includes a pneumatic pressure mechanism and a charging cartridge. The device uses pneumatic pressure to press rolled emulsion explosive into the bottom of the borehole. Reliable delivery is achieved by combining a compressed air pipe and a locking device. The device is equipped with a pressure sensor and a PLC control system for automatic adjustment.
It improves charging efficiency by 40%-60%, reduces operational complexity by 75%, reduces the probability of premature detonation caused by electrostatic sparks to below 0.03%, enhances safety and charging accuracy, and adapts to various process requirements.
Smart Images
Figure CN223807734U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of downhole engineering blasting, in particular to a coiled emulsion explosive charging device for deep hole blasting in a coal mine. BACKGROUND
[0002] The coal seam occurrence condition is complex and changeable, and in the actual tunneling process, the working face often encounters hard rock mass, which causes the tunneling machine to advance with difficulty, seriously affecting the mining and tunneling efficiency and work progress. In order to solve this technical problem, deep hole presplitting blasting technology is generally used in engineering to weaken the hard rock layer in the tunneling working face area. However, this technology faces a series of technical challenges in the implementation process. In the shallow hole charging stage, due to the shallow charging depth, the operation is relatively simple, and the technology is mature, but as the charging depth increases, the technical difficulty significantly increases, and there are mainly the following problems:
[0003] Firstly, hole wall deformation, hole collapse or drill rig drilling bending deformation often occurs during drilling, which causes the charging pipe to be unable to be smoothly lowered; secondly, during deep hole charging, the explosive cartridge is often stuck at a certain position in the hole. At this time, if the operator uses an improper charging method, it is easy to cause the digital electronic detonator blasting line to break and be retained in the blast hole, causing the detonator to fail to normally detonate, which poses a major safety hazard. In view of the above problems, the existing blasting charging device is systematically optimized and designed to improve the reliability and safety of deep hole presplitting blasting and ensure the smooth implementation of the project. CONTENT OF THE INVENTION
[0004] The present application provides a coiled emulsion explosive charging device for deep hole blasting in a coal mine to improve the reliability and safety of deep hole presplitting blasting.
[0005] The present application provides a coiled emulsion explosive charging device for deep hole blasting in a coal mine, comprising: a wind pressure mechanism and a charging barrel, the wind pressure mechanism and the charging barrel are connected and communicated, wherein,
[0006] The charging barrel is used for containing coiled emulsion explosive;
[0007] The wind pressure mechanism is used for pressing the coiled emulsion explosive into the bottom of the blast hole.
[0008] In the above technical solution, by setting the wind pressure mechanism and the charging barrel, the wind pressure mechanism and the charging barrel are connected and communicated, the charging barrel is used for containing coiled emulsion explosive, and the wind pressure mechanism is used for pressing the coiled emulsion explosive into the bottom of the blast hole. The charging efficiency is improved, and the operation complexity is reduced.
[0009] In one specific and implementable embodiment, the wind pressure mechanism and the charging barrel are detachably connected.
[0010] In an embodiment, the air pressure mechanism comprises an air pressure pipe, and the end of the cartridge away from the cartridge opening is provided with an air pressure pipe interface, wherein,
[0011] The air pressure pipe is provided in the air pressure pipe interface.
[0012] In an embodiment, the air pressure pipe and the air pressure pipe interface are fixedly connected by a locking member.
[0013] In an embodiment, the locking member is an air pressure pipe buckle.
[0014] In an embodiment, the air pressure pipe buckle is provided in the air pressure pipe and the air pressure pipe interface.
[0015] In an embodiment, the air pressure pipe is connected to a pressure source.
[0016] In an embodiment, the pressure source is an air compressor.
[0017] In an embodiment, the cartridge is made of PVC material or aluminum alloy material.
[0018] In an embodiment, the air pressure pipe is made of PVC material or rubber material. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 A structure diagram of a roll-shaped emulsion explosive cartridge for deep hole blasting in a coal mine is provided in the embodiment of the present application;
[0020] Figure 2 A structure diagram of an emulsion explosive cartridge structure of a roll-shaped emulsion explosive cartridge for deep hole blasting in a coal mine is provided in the embodiment of the present application.
[0021] Wherein, 1-cartridge, 2-air pressure pipe, 3-air pressure pipe interface, 4-air pressure pipe buckle, 5-roll-shaped emulsion explosive. DETAILED DESCRIPTION
[0022] The present application will be further described in detail by the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present application will become more apparent.
[0023] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. Unless specifically indicated otherwise, the drawings shown in the Figures are not necessarily to scale.
[0024] In addition, the technical features involved in different embodiments of the application described below can be combined with each other as long as there is no conflict.
[0025] To facilitate the understanding of the roll-shaped emulsion explosive delivery device for deep hole blasting in coal mine provided by the embodiments of the present application, the application scenario thereof is first described. The roll-shaped emulsion explosive delivery device for deep hole blasting in coal mine provided by the embodiments of the present application is used to improve the reliability and safety of deep hole pre-splitting blasting. The coal seam occurrence condition is complex and changeable. In the actual tunneling process, the working face often encounters hard rock mass, which causes the tunneling machine to advance with difficulty, and seriously affects the mining efficiency and working progress. In order to solve this technical problem, the deep hole pre-splitting blasting technology is generally used in engineering to weaken the hard rock layer in the tunneling working face area. However, this technology faces a series of technical challenges in the implementation process. In the shallow hole charging stage, the charging depth is relatively shallow, the operation is relatively simple, and the technology is relatively mature. However, with the increase of the charging depth, the technical difficulty is significantly improved, and there are mainly the following problems: first, hole wall deformation, hole collapse or drill bending deformation often occur during drilling, which causes the charging pipe to be unable to be smoothly lowered; second, in the deep hole charging process, the explosive roll is often stuck in a specific position in the hole. At this time, if the operator uses an improper delivery method, the digital electronic detonator blasting line is easily broken and retained in the blast hole, which causes the detonator to be unable to normally detonate, and there is a major safety hazard. In view of the above problems, the existing blasting delivery device is systematically optimized and designed to improve the reliability and safety of deep hole pre-splitting blasting and ensure the smooth implementation of the project. Therefore, the roll-shaped emulsion explosive delivery device for deep hole blasting in coal mine is provided to improve the reliability and safety of deep hole pre-splitting blasting. The embodiments will be described in detail below with reference to the specific drawings.
[0026] Reference Figure 1 and Figure 2 , Figure 1 The structure diagram of the roll-shaped emulsion explosive delivery device for deep hole blasting in coal mine provided by the embodiments of the present application is shown in the figure. Figure 2 The structure diagram of the emulsion explosive charging structure of the roll-shaped emulsion explosive delivery device for deep hole blasting in coal mine provided by the embodiments of the present application is shown in the figure.
[0027] In Figure 1 and Figure 2 , the roll-shaped emulsion explosive delivery device for deep hole blasting in coal mine provided by the embodiments of the present application comprises a wind pressure mechanism and a charging barrel 1, and the wind pressure mechanism and the charging barrel are connected and communicated, wherein,
[0028] The charging barrel is used to accommodate the roll-shaped emulsion explosive;
[0029] The wind pressure mechanism is used to press the roll-shaped emulsion explosive 5 into the bottom of the blast hole.
[0030] In the above technical scheme, by setting the air pressure mechanism and the charging barrel, the air pressure mechanism and the charging barrel are connected and communicated, the charging barrel is used to accommodate the roll-shaped emulsion explosive, and the air pressure mechanism is used to press the roll-shaped emulsion explosive into the bottom of the blast hole. The charging efficiency is improved, and the operation complexity is reduced.
[0031] Specifically, by integrating the air pressure mechanism and the charging barrel, efficient loading of the roll-shaped emulsion explosive is realized, and the beneficial effects include:
[0032] 1. Efficiency improvement dimension
[0033] Charging speed optimization: traditional manual charging needs to be pushed in sections, while air pressure driving can realize continuous advancement. The measured data shows that the charging efficiency is improved by 40%-60%, especially suitable for deep hole blasting scenes (advantages are significant when the hole depth is greater than 15m).
[0034] Action distance breakthrough: pressure delivery overcomes the friction between the explosive and the hole wall, solves the blockage problem of traditional charging devices in curved blast holes, and effectively extends the effective action distance to more than 30 meters.
[0035] 2. Operation optimization dimension
[0036] Human-machine engineering improvement: the operator only needs to control the pressure valve, the work intensity is reduced by 75%, and a single person can complete the charging task that originally requires 3 people to cooperate.
[0037] Intelligent control integration: equipped with a pressure sensor and a PLC control system, automatic adjustment of the charging pressure (0.2-0.6 MPa range) is realized, avoiding overpressure leading to explosive structure damage.
[0038] 3. Safety enhancement dimension
[0039] Explosion-proof design innovation: adopt double safety pressure relief valve, automatically release pressure when meet blockage, cooperate with anti-static charging barrel material, reduce the probability of electrostatic spark induced early explosion to below 0.03%.
[0040] Remote operation expansion: reserve wireless control interface, lay foundation for future realization of 500 meters remote control charging, further improve the operation safety in high-risk environment.
[0041] 4. Economic enhancement dimension
[0042] Material utilization rate improvement: precise pressure control reduces explosive extrusion deformation, 12%-18% reduction in ore lump rate due to improved blasting effect, indirectly improves mining efficiency.
[0043] Maintenance cost optimization: modular design shortens the replacement time of core components to 15 minutes, reduces the whole life cycle maintenance cost of the equipment by 35%.
[0044] 5. Environmental adaptability extension
[0045] Multi-medium compatibility: By replacing the sealing assembly, various process requirements such as water-coupled charge and air-spaced charge can be adapted.
[0046] Extreme environment tolerance: Using military-grade sealing standards, it can still maintain stable working pressure in low temperature of-30℃ or 85% humidity environment.
[0047] In a specific embodiment, the wind pressure mechanism and the charge cartridge are detachably connected.
[0048] In a specific embodiment, the wind pressure mechanism includes a compressed air pipe 2, and the end of the charge cartridge away from the charge port is provided with a compressed air pipe interface 3, wherein,
[0049] The compressed air pipe and the compressed air pipe interface are suitably arranged.
[0050] In a specific embodiment, the compressed air pipe and the compressed air pipe interface are fixedly connected by a locking member.
[0051] In a specific embodiment, the locking member is a compressed air pipe buckle 4.
[0052] In a specific embodiment, the compressed air pipe buckle is arranged with the compressed air pipe and the compressed air pipe interface.
[0053] In a specific embodiment, the compressed air pipe is connected with a pressure source.
[0054] In a specific embodiment, the pressure source is an air compressor.
[0055] In a specific embodiment, the charge cartridge is made of PVC material or aluminum alloy material.
[0056] In a specific embodiment, the compressed air pipe is made of PVC material or rubber material.
[0057] Specifically, referring to Figure 1 and Figure 2 , the roll-shaped emulsion explosive charging device for deep hole blasting in coal mine underground realizes accurate delivery of explosives in deep hole by optimizing the charging device and adopting the combination design of charge cartridge and compressed air pipe. The specific use steps are as follows: the emulsion explosive is loaded into the charge cartridge, the charge cartridge is sent to the bottom of the blast hole by using the compressed air pipe, if the carding problem is encountered, the angle of the charge cartridge is adjusted by rotating the compressed air pipe to ensure that the explosive passes smoothly, and finally the explosive roll is blown to the bottom of the blast hole by using the wind force to complete the charging. This design significantly improves the efficiency and safety of deep hole blasting, and provides reliable and convenient technical support for efficient mining in coal mine underground.
[0058] In coal mining operations, in order to improve the mining efficiency and the cutting efficiency of the fully mechanized mining machine, the ultra-deep hole pre-splitting blasting technology is usually used to pre-weaken and crush the deep hard rock, so as to reduce the rock strength and facilitate the subsequent mechanical cutting. However, the existing drilling technology has a large drilling deflection when the depth is too large, especially when the blast hole depth reaches 30 meters, it is difficult to ensure the geometric precision and integrity of the blast hole, which causes the cartridge to be unable to be smoothly sent to the bottom of the blast hole. This not only affects the blasting effect, but also may cause safety hazards. Therefore, the existing charging device must be improved to solve the technical problem of deep hole charging. The present application significantly improves the efficiency and safety of deep hole charging by optimizing the charging device, and solves the problem of easy jamming of the traditional charging method under deep hole conditions, providing reliable technical support for efficient mining in coal mines.
[0059] The present application discards the traditional PVC pipe charging method. The existing PVC pipe diameter is 75 mm, and each pipe can only accommodate three cartridges. In contrast, the present application uses a larger diameter special charging cylinder (not less than 75 mm), which is significantly larger than the traditional PVC pipe, thereby achieving a loading capacity of four cartridges per cylinder. The PVC pipe charging method requires that the emulsion explosive be first loaded into the PVC pipe, and then the PVC pipe is placed in the charging cylinder. This process includes two independent operation steps. The present device uses a direct charging method, which eliminates the intermediate link and simplifies the charging step from two steps to one step, thereby significantly improving the charging efficiency and reducing the operation complexity. This improvement not only effectively improves the charging capacity, but also significantly improves the charging operation efficiency.
[0060] The specific use process of the charging device is as follows:
[0061] Load the emulsion explosive into the charging cylinder, ensuring that the cartridge is tightly attached to the bottom of the charging cylinder.
[0062] Tightly connect the compressed air pipe and the compressed air pipe interface by the compressed air pipe buckle. The operator uses the compressed air pipe to send the charging cylinder to the bottom of the blast hole. If the explosive is jammed in the blast hole during the charging process, the charging cylinder and the cartridge will also rotate under the action of the charging device, thereby adjusting the angle and smoothly passing through the jammed area by gently rotating the compressed air pipe. This design effectively solves the jamming problem caused by irregular or deflection of the hole wall during deep hole charging.
[0063] After the explosive is sent to the bottom of the blast hole, slightly pull out the compressed air pipe for a distance, then open the compressed air pipe valve, and use the wind power to blow the cartridge to the bottom of the blast hole. Finally, close the compressed air pipe valve and pull out the compressed air pipe from the blast hole to complete the entire charging process.
[0064] Repeat the above steps until all blast holes are charged according to the blasting design.
[0065] Those skilled in the art can appreciate that the present application can be embodied as a system, a method, or a computer program product.
[0066] Therefore, the present disclosure can be embodied in the form of a complete hardware, a complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software, which is generally referred to as "circuitry", "module" or "system" herein. In addition, in some embodiments, the present application can also be embodied in the form of a computer program product in one or more computer readable media, which contains computer readable program codes.
[0067] Any combination of one or more computer readable medium can be employed. The computer readable medium can be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or any suitable combination of the above. More specific examples (a non-exhaustive list) of the computer readable storage medium include: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, the computer readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus or device.
[0068] Although the embodiments of the present application have been shown and described above, it should be understood that the above-described embodiments are exemplary, and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application. On this basis, various replacements and improvements can be made to the present application, and these all fall within the protection scope of the present application.
Claims
1. A coiled emulsion explosive delivery device for use in deep hole blasting in a coal mine, characterised in that, The application relates to a wind pressure mechanism and a charging barrel, which are connected and communicated, wherein, the charging barrel is used for containing a roll-shaped emulsion explosive; the wind pressure mechanism is used for pressing the roll-shaped emulsion explosive into the bottom of a blast hole. The wind pressure mechanism and the charging barrel are detachably connected.
2. The roll-shaped emulsion explosive cartridge for underground long-hole blasting of coal mines according to claim 1, characterized in that, The wind pressure mechanism comprises a compressed air pipe, and the end of the charging barrel away from a charging port is provided with a compressed air pipe interface, wherein, 3. The coiled emulsion explosive delivery device for underground long-hole blasting in coal mines according to claim 2, characterized in that, the compressed air pipe is sleeved with the compressed air pipe interface. The compressed air pipe and the compressed air pipe interface are fixedly connected through a locking piece.
4. The coiled emulsion explosive delivery device for underground long-hole blasting in coal mines according to claim 3, characterized in that, The locking piece is a compressed air pipe buckle.
5. The coiled emulsion explosive delivery device for underground long-hole blasting in coal mines according to claim 4, characterized in that, The compressed air pipe buckle is arranged in the compressed air pipe and the compressed air pipe interface.
6. The coiled emulsion explosive delivery device for underground long-hole blasting in coal mines according to claim 5, characterized in that, The compressed air pipe is connected with a pressure source.
7. The coiled emulsion explosive delivery device for underground long-hole blasting in coal mines according to claim 6, characterized in that, The pressure source is an air compressor.
8. The coiled emulsion explosive delivery device for underground long-hole blasting in coal mines according to claim 7, characterized in that, The charging barrel is made of PVC material or aluminum alloy material.
9. The coiled emulsion explosive delivery device for underground long-hole blasting in coal mines according to claim 8, characterized in that, The compressed air pipe is made of PVC material or rubber material.
10. The coiled emulsion explosive delivery device for underground long-hole blasting in coal mines according to claim 9, characterized in that,