Cleaning device and cleaning method for abnormal charging of water-gel explosives
By using a cleaning device and method that utilizes high-pressure liquid flow cutting and density differences, the problem of borehole blockage caused by abnormal loading of water-gel explosives has been solved, achieving safe and efficient borehole cleaning.
Patent Information
- Application Number
- CN202511379373.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2025-12-12
AI Technical Summary
In existing technologies, excessive charge or over-sensitization of water-gel explosives can cause the height of the explosive charge in the borehole to exceed the design elevation, resulting in a blockage length that does not meet the blasting design requirements, posing a safety hazard and making effective cleanup difficult.
A pressurized liquid supply unit is used to inject high-pressure liquid into the joint through a pipeline. The high-pressure liquid flow cuts the water gel explosive, and the excess explosive is discharged by the cutting liquid with density difference. An adjustable frame and joint are used to adapt to different terrains. The fragments are discharged by cutting with a spiral trajectory and buoyancy.
It enables a simple and safe way to remove excess explosive charge from water-based explosives, improving operational efficiency, reducing safety risks, and meeting blasting design requirements.
Smart Images
Figure CN121112840A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of explosives blasting technology, specifically to a cleaning device and method for cleaning abnormalities in the loading of water-gel explosives. Background Technology
[0002] On-site mixed water-gel explosives exhibit high sensitization efficiency, good water resistance, and gelling properties. After gelling, the water-gel explosives are insoluble in water, providing excellent waterproofing. The density of the water-gel explosives is adjustable, typically ranging from 0.3 to 1.25 g / cm³. 3 The density of water-gel explosives is mostly within the range of 1 g / cm³ during use. 3 The following applies only to certain hard ores, such as uranium ore, where a density greater than 1 g / cm³ is used. 3 Water-gel explosives can meet the blasting needs of different situations.
[0003] In open-pit bench blasting, water-gel explosives are loaded into the borehole using a coupled loading method. The top of the water-gel explosive is sealed from the borehole opening to the borehole head with plugging material, thus enclosing the water-gel explosive within the borehole. Because water-gel explosives expand gradually with increasing sensitization, there is a risk of overloading or over-sensitization, resulting in the explosive charge height exceeding the design elevation. This leads to the actual plugging length of the borehole not meeting the design plugging length, failing to comply with blasting design and construction specifications, and potentially causing safety accidents.
[0004] Currently, there are no suitable tools for handling the excessively long portions of water-based explosive charges inside boreholes. Most operations rely on manual removal using wooden or bamboo tools to remove the excess charge. This process is difficult, challenging, and carries significant safety risks. Summary of the Invention
[0005] To address the aforementioned deficiencies, the technical problem to be solved by this invention is to provide a cleaning device and method for abnormal loading of water-gel explosives. This device can easily clean excess water-gel explosives from the borehole and is simple to operate.
[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: In a first aspect, a cleaning device for abnormal loading of water-gel explosives is provided, comprising a pressurized liquid supply unit, a pipe, a frame, and a connector. The connector is hollow inside, and a plurality of liquid outlet holes communicating with the interior are opened on the side of the connector. The connector is connected to the output end of the pressurized liquid supply unit through the pipe. The pressurized liquid supply unit can inject fluid into the connector through the pipe at a predetermined pressure. The pipe is movably installed on the frame.
[0007] By adopting the above scheme, during use, the frame is installed near the borehole, the connector is inserted into the water-gel explosive, and the pressurized liquid is supplied to the connector through a pipe via a pressurized liquid supply unit. The high-pressure liquid is then ejected from the outlet, forming a high-pressure liquid flow. Rotating the connector at least one turn causes the high-pressure liquid flow to cut the water-gel explosive charge, thus separating the excess portion of the water-gel explosive from the main body. Continuous liquid injection pushes the cut-off portion of the gelled water-gel explosive upwards. Furthermore, the high-pressure liquid flow creates a smooth cut surface with each turn, improving the accuracy of cutting the water-gel explosive. If the borehole wall is rough, making it difficult to eject the water-gel explosive, the connector can be pulled up and down during use, allowing the high-pressure liquid flow to rise and fall along a spiral trajectory, thus cutting the excess water-gel explosive charge into several fragments. Injecting a liquid with a density higher than the water-gel explosive into the borehole allows the buoyancy of the water-gel explosive fragments to be discharged from the borehole.
[0008] Preferably, the frame includes a guide sleeve and three legs connected to each other. The three legs are evenly distributed along the circumference of the guide sleeve, and the pipe passes through the guide sleeve. The guide sleeve guides the pipe, facilitating the insertion of the pipe and connector into the blast hole.
[0009] Preferably, the support leg and the guide sleeve are hinged together. By adjusting the angle between the support leg and the guide sleeve, the distance between the guide sleeve and the borehole can be easily adjusted, and the initial position of the joint can be easily adjusted to the borehole opening.
[0010] Preferably, the length of the support leg is adjustable. Adjusting the length of the support leg allows for easy adaptation to uneven terrain and convenient adjustment of the distance between the guide sleeve and the blast hole.
[0011] Preferably, the connector includes a connected cylinder and a conical head, with the cylinder fixed to the larger diameter end of the conical head, and the cylinder communicating with a pipe. The conical head allows for easier insertion into the water-gel explosive.
[0012] Preferably, the liquid outlet is located on the cylinder and is positioned close to the conical head.
[0013] Preferably, one end of the pipe is threaded into the cylinder. This facilitates the installation and disassembly of the pipe and the fitting.
[0014] Secondly, a method for cleaning up abnormalities in the loading of water-gel explosives is provided, comprising the following steps: S1: Using the cleaning device as described in any one of claims 1-7, move the cleaning device to the borehole; insert the connector into the borehole and extend it into the already gelled water-based explosive, wherein the depth to which the connector is inserted into the borehole is the designed plugging length of the borehole; S2: The cutting fluid is pressurized by the pressurized liquid supply unit and then sent into the joint through the pipeline. The pressurized cutting fluid is sprayed out through the liquid outlet hole. The joint is rotated so that the cutting fluid sprayed out through the liquid outlet hole cuts the water gel explosive, so that the excess part of the water gel explosive is separated from the main part of the water gel explosive. S3: Continue to inject cutting fluid into the borehole. The cutting fluid is injected from the cut point of the water-gel explosive. The density of the cutting fluid is greater than the density of the water-gel explosive. The volume of the cutting fluid injected into the borehole is greater than or equal to the volume of the borehole in the designed blocking length section.
[0015] The above method involves using high-pressure cutting fluid ejected through the outlet to cut the gelled water-gel explosive. The continuously injected cutting fluid then pushes the excess propellant upwards. Furthermore, because the density of the cutting fluid is greater than that of the water-gel explosive, the excess propellant is effectively discharged from the borehole. The entire process is simple, easy to operate, and effectively improves cleanup efficiency.
[0016] Preferably, the following steps are performed between S2 and S3: rotating the connector while simultaneously lifting it; after the connector is removed from the water-gel explosive, it is reinserted into the borehole to a depth equal to the designed plugging length of the borehole. By rotating the connector and simultaneously lifting it up and down, the high-pressure cutting fluid flow can rise and fall along a spiral trajectory, thereby cutting the excess water-gel explosive charge into several fragments. Injecting a liquid with a density higher than that of the water-gel explosive into the borehole allows the fragments of the water-gel explosive to be more easily discharged from the borehole by buoyancy.
[0017] Preferably, the cutting fluid is water. Using water as the cutting fluid fully utilizes the gelling properties and water insolubility of water-gel explosives. For water-gel explosives with a density lower than water, it can quickly expel excess water-gel explosives from the upper part of the cutting surface outside the borehole. Cutting water-gel explosives using a water jet formed by a high-pressure water flow is safer and reduces safety risks. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any novel effort.
[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.
[0019] The attached reference numerals include: frame 1, guide sleeve 101, support leg 102, pressurized liquid supply unit 2, pipe 3, connector 4, cylinder 401, conical head 402, liquid outlet 5, scale line 6, and blast hole 7. Detailed Implementation
[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the following description is provided in conjunction with the appendix. Figure 1 The present invention will be further described in detail below with reference to specific embodiments.
[0021] Example 1 Please see Figure 1 This embodiment provides a cleaning device for abnormal loading of water-gel explosives, including a pressurized liquid supply unit 2, a pipe 3, a frame 1, and a connector 4. The connector 4 is hollow inside, and its side has several liquid outlet holes 5 communicating with the interior. The connector 4 is connected to the output end of the pressurized liquid supply unit 2 via the pipe 3, which injects fluid into the connector 4 at a predetermined pressure through the pipe 3. The pipe 3 is movably mounted on the frame 1 and can move vertically along the frame 1. The connector 4 includes a connected cylinder 401 and a conical head 402. The conical head 402 is conical with its tip pointing downwards. The cylinder 401 is fixed to the larger diameter end of the conical head 402 and is connected to the pipe 3. The liquid outlet holes 5 are formed on the cylinder 401 and are located close to the conical head 402. Multiple liquid outlet holes 5 can be formed, and they are evenly distributed along the circumference of the cylinder 401. The inner side of the cylinder 401 is provided with an internal thread, and the end of the pipe 3 away from the pressurized liquid supply unit 2 is provided with an external thread that matches the internal thread. The end of the pipe 3 with the external thread is threaded into the cylinder 401. The pipe 3 can be made of reinforced rubber or other plastic materials with good rigidity and flexibility.
[0022] In some embodiments, the pressurized liquid supply unit 2 includes a water tank, a booster pump, and a power supply. The power supply provides power to the booster pump, which is capable of drawing liquid stored in the water tank. The output end of the booster pump is connected to an outlet, which is connected to a pipe 3. In use, the booster pump draws liquid stored in the water tank, pressurizes the liquid, and then inputs it through the output end of the booster pump to the outlet. The liquid then flows through the outlet, through the pipe 3, and into the connector 4. A high-pressure liquid stream is ejected through the liquid outlet hole 5 on the connector 4.
[0023] The frame 1 includes a guide sleeve 101 and three supports 102 connected to each other. The three supports 102 are evenly distributed along the circumference of the guide sleeve 101. The pipe 3 passes through the guide sleeve 101 and can move up and down within the guide sleeve. The supports 102 are hinged to the guide sleeve 101; specifically, the upper end of the supports 102 is hinged to the guide sleeve 101. The length of the supports 102 is adjustable. All components of the frame 1 can be made of aluminum alloy.
[0024] In some embodiments, the diameter of the liquid outlet 5 is 0.6-0.8 mm.
[0025] In some embodiments, in order to facilitate observation of the distance the connector 4 extends into the borehole 7, a scale line 6 is provided along the length of the pipe 3.
[0026] By adopting the above scheme, during use, the frame 1 is installed near the borehole 7, and the connector 4 is inserted into the water-gel explosive. The pressurized liquid supply unit 2 delivers the pressurized liquid to the connector 4 through the pipe 3. The high-pressure liquid is then ejected from the outlet hole 5, forming a high-pressure liquid flow. Rotating the connector 4 at least one turn causes the high-pressure liquid flow to cut the water-gel explosive charge, thus separating the excess portion of the water-gel explosive from the main body. Continuous liquid injection pushes the cut-off portion of the gelled water-gel explosive upwards. Furthermore, the high-pressure liquid flow creates a smooth cut surface with each revolution, improving the accuracy of cutting the water-gel explosive.
[0027] If the inner wall of borehole 7 is relatively rough, the friction between the water-gel explosive and borehole 7 will be greater, making it difficult to eject. During use, the connector 4 can be pulled up and down, allowing the high-pressure liquid flow to rise and fall along a spiral trajectory, thus cutting excess water-gel explosive charge into several fragments. Injecting a liquid with a density higher than that of the water-gel explosive into borehole 7 will allow buoyancy to expel the fragments of the water-gel explosive from borehole 7.
[0028] Example 2 Based on the same inventive concept, this embodiment provides a method for cleaning up abnormalities in the loading of water-based explosives, including the following steps: S1: Using the cleaning device in Example 1, move the cleaning device to the borehole 7; insert the connector 4 into the borehole 7 and extend it into the already gelled water-based explosive. The depth of the connector 4 inserted into the borehole 7 is the designed blocking length L1 of the borehole 7. S2: The cutting fluid is pressurized by the pressurized fluid supply unit 2 and then sent into the connector 4 through the pipe 3. The pressurized cutting fluid is sprayed out through the outlet hole 5. The connector 4 is rotated, and the cutting fluid sprayed through the outlet hole 5 cuts the water-gel explosive, so that the excess part of the water-gel explosive charge separates from the main charge. To ensure complete cutting of the water-gel explosive charge, the connector 4 must rotate at least one revolution. If there are many outlet holes 5 on the circumference of the connector 4, the connector 4 can cut the water-gel explosive charge without rotating one revolution. The hydraulic pressure of the cutting fluid output by the pressurized fluid supply unit 2 is adjusted according to the density of the water-gel explosive. Specifically, when the density of the water-gel explosive ρ < 0.65 g / cm3, the hydraulic pressure can be controlled at 3~5 MPa; when the density of the water-gel explosive 0.65 g / cm3 < ρ < 0.85 g / cm3, the hydraulic pressure can be controlled at 5~6 MPa. When g / cm3 < ρ < 1.35 g / cm3, the hydraulic pressure should be adjusted and controlled at 6~7 MPa; S3: Continue injecting cutting fluid into borehole 7. The cutting fluid is injected through the gap created by the cut in the water-gel explosive in step S2. The density of the cutting fluid is greater than that of the water-gel explosive, and the volume of the cutting fluid injected into borehole 7 is greater than or equal to the volume of borehole 7 in the designed blocking length section. Continuing to inject cutting fluid into borehole 7 can be achieved using the following steps: Disconnect connector 4 from pipe 3, and insert the lower end of pipe 3 into the water-gel explosive along the path of connector 4 inserted into the water-gel explosive in step S1. The volume of borehole 7 in the designed blocking length section... In the formula: L1 is the actual remaining length of the blast hole 7 after the water-gel explosive in the blast hole 7 has gelled; d is the diameter of the blast hole 7; π is the value of pi.
[0029] By employing the above method, the high-pressure cutting fluid ejected through the outlet 5 cuts the gelled water-gel explosive. The continuously injected cutting fluid then pushes the excess explosive charge upwards. Furthermore, because the density of the cutting fluid is greater than that of the water-gel explosive, the excess charge is discharged from the borehole 7. The entire process is simple to operate, has low difficulty, and effectively improves cleaning efficiency.
[0030] In some embodiments, the following steps are performed between S2 and S3: rotating the connector 4 while simultaneously raising it; after the connector 4 is removed from the water-gel explosive, it is reinserted into the borehole 7 to a depth equal to the designed plugging length of the borehole 7. Maintaining a constant speed during the raising and lowering of the connector 4, and repeatedly raising and lowering it while maintaining its rotation, can improve the fragmentation degree of the water-gel explosive.
[0031] In some embodiments, water is used as the cutting fluid. Using water as the cutting fluid fully utilizes the gelling properties and water insolubility of water-gel explosives. For water-gel explosives with a density lower than water, excess water-gel explosives filling the upper part of the cutting surface can be quickly expelled from the borehole 7. Cutting water-gel explosives using a water jet formed by a high-pressure water flow is safer and reduces safety risks.
[0032] In some embodiments, before step S1, the following steps are performed: the actual remaining length L1 of the borehole 7 is compared with the designed borehole 7 plugging length L2; if L1 is less than L2, then proceed to step S1; if L1 is greater than or equal to L2, then the length of the water-gel explosive can meet the design requirements of the borehole plugging length, and step S1 is not performed.
[0033] It should be noted that words indicating direction in this article, such as "up" and "down," are all in the format of "upper" and "lower." Figure 1 The direction setting is for ease of description only and has no other specific meaning.
[0034] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.
[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims
1. A cleaning device for abnormal loading of water-based explosives, characterized in that, It includes a pressurized liquid supply unit (2), a pipe (3), a frame (1) and a connector (4). The connector (4) is hollow inside. Several liquid outlet holes (5) communicating with the inside are opened on the side of the connector (4). The connector (4) is connected to the output end of the pressurized liquid supply unit (2) through the pipe (3). The pressurized liquid supply unit (2) can inject fluid into the connector (4) through the pipe (3) at a predetermined pressure. The pipe (3) is movably installed on the frame (1).
2. The cleaning device for abnormal loading of water-gel explosives according to claim 1, characterized in that, The frame (1) includes a guide sleeve (101) and three legs (102) connected to each other. The three legs (102) are evenly distributed along the circumference of the guide sleeve (101), and the pipe (3) passes through the guide sleeve (101).
3. The cleaning device for abnormal loading of water-gel explosives according to claim 2, characterized in that, The support leg (102) is hinged to the guide sleeve (101).
4. The cleaning device for abnormal loading of water-gel explosives according to claim 3, characterized in that, The length of the support leg (102) is adjustable.
5. The cleaning device for abnormal loading of water-gel explosives according to claim 1, characterized in that, The connector (4) includes a cylindrical tube (401) and a conical head (402) connected to each other. The cylindrical tube (401) is fixed at the end of the conical head (402) with a larger diameter. The cylindrical tube (401) is connected to the pipe (3).
6. The cleaning device for abnormal loading of water-gel explosives according to claim 5, characterized in that, The liquid outlet (5) is opened on the cylinder (401) and the liquid outlet (5) is located near the conical head (402).
7. The cleaning device for abnormal loading of water-gel explosives according to claim 5, characterized in that, One end of the pipe (3) is threaded into the cylinder (401).
8. A method for cleaning up abnormalities in the loading of water-based explosives, characterized in that, Includes the following steps: S1: Using the cleaning device as described in any one of claims 1-7, move the cleaning device to the borehole (7); insert the connector (4) into the borehole (7) and extend it into the solidified water-gel explosive, wherein the depth of the connector (4) inserted into the borehole (7) is the design blocking length of the borehole (7); S2: The cutting fluid is pressurized by the pressurized liquid supply unit (2) and sent into the connector (4) through the pipe (3). The pressurized cutting fluid is sprayed out through the liquid outlet (5). The connector (4) is rotated and the cutting fluid sprayed out through the liquid outlet (5) cuts the water gel explosive so that the excess part of the water gel explosive is separated from the main part of the water gel explosive. S3: Continue to inject cutting fluid into the borehole (7). The cutting fluid is injected from the cut-off point of the water-gel explosive. The density of the cutting fluid is greater than the density of the water-gel explosive. The volume of the cutting fluid injected into the borehole (7) is greater than or equal to the volume of the borehole (7) in the designed blocking length section.
9. The method for cleaning up abnormalities in the loading of water-gel explosives according to claim 8, characterized in that, Between S2 and S3, the following steps are performed: the connector (4) is rotated while the connector (4) is lifted; after the connector (4) is removed from the water-gel explosive, the connector (4) is reinserted into the borehole (7) to a depth equal to the designed blocking length of the borehole (7).
10. The method for cleaning up abnormalities in the loading of water-gel explosives according to claim 8, characterized in that, The cutting fluid is water.