An underground metal mine upward fan-shaped medium-length hole filling device and a use method thereof

Abstract

This invention discloses an upward-facing fan-shaped deep-hole filling device and its usage method for underground metal mines. The device includes a clay filling pipe, a guide pipe, and a support plate. Two support plates are fixed at both ends near the guide pipe. The clay filling pipe is rotatably connected to the support plates at both ends, and a spiral conveying rod is installed inside the clay filling pipe. The support plate includes a fan-shaped plate body, with an upper and lower blocking plate on its upper and lower sides that can slide outward along two radial edges. This invention uses the upper and lower blocking plates of the fan-shaped support plate to slide outward along the arc edge, contacting the arc surface of the entire fan-shaped emulsion explosive hole, thereby fixing the entire device and supporting fine sand for shaping and blocking. This fixes and fully fills the explosive hole with fluid emulsion explosive, making operation convenient.

Description

Technical Field

[0001] This invention relates to the field of mineral extraction technology, and in particular to an upward fan-shaped deep hole filling device and its usage method in underground metal mines. Background Technology

[0002] Medium-deep hole blasting was first used in my country's Huatong Copper Mine in 1954 and was quickly adopted. This blasting method led to a reform of mining methods and improved the production capacity of ore blocks. Hole layouts are generally divided into upward fan-shaped and horizontal fan-shaped layouts, with the upward fan-shaped layout being more commonly used. However, manual charging in upward medium-deep holes presents problems such as harsh working conditions, high labor intensity, and numerous safety hazards. With continuous technological advancements, to improve the inherent safety of blasting charges in underground mines and enhance the working environment, on-site mixed-charge vehicles have been successfully developed and are widely used.

[0003] However, during the process of using a charging truck to charge upward fan-shaped boreholes, it was found that due to the fluidity of the emulsion explosive and the influence of gravity, there was often a phenomenon where the charging truck was pumping explosives into the borehole while the explosives were simultaneously flowing out of the borehole opening. This resulted in insufficient charge at the bottom of the borehole, leaving a residue at the bottom of the blasting site, which greatly affected the blasting effect and caused a serious waste of mineral resources. Summary of the Invention

[0004] To address these issues, this invention provides a device and method for plugging upward-facing fan-shaped deep boreholes in underground metal mines. The device first plugs the upward-facing fan-shaped borehole to a suitable length, then guides the charging vehicle's charging pipe through the plugging device's guide pipe to the bottom of the borehole before pumping emulsion explosives. This pre-plugging of the borehole prevents the emulsion explosives from overflowing from the borehole opening due to their own fluidity and gravity during the charging process, significantly improving the blasting effect at the bottom of the upward-facing fan-shaped borehole. 。

[0005] To achieve the technical effect of solving the above-mentioned technical problems, the present invention is implemented through the following technical solution:

[0006] A fan-shaped deep-hole plugging device for underground metal mines includes a clay filling pipe, a guide pipe, and a support plate. Two support plates are fixed to both ends of the guide pipe. The clay filling pipe is rotatably connected to the support plates at both ends, and a spiral conveying rod is installed inside the clay filling pipe. The support plate includes a fan-shaped plate body. An upper plugging plate and a lower plugging plate are provided on the upper and lower sides of the plate body, which can slide outwards along two radial edges. Inclined guide teeth b and guide teeth a are respectively provided at the transition between the upper and lower plugging plates, correspondingly meshing. When the lower plugging plate slides outwards, guide teeth a and guide teeth b mesh and move relative to each other, contacting the upper plugging plate and sliding circumferentially with the lower plugging plate. The lower plugging plate is also provided with a connecting rod and a crank that are rotatably connected to it in sequence. The other end of the crank is fixedly connected to the outer wall of the clay filling pipe. The integrated rotation of the clay filling pipe and the crank drives the lower plugging plate to slide circumferentially.

[0007] Furthermore, the transition between the upper and lower blocking plates on the support plate is provided with a break to avoid the mutual meshing of guide teeth a and guide teeth b;

[0008] Furthermore, the plate is also provided with a sliding groove and an arc-shaped groove. The upper blocking plate and the lower blocking plate are respectively provided with slider b and slider a, which slide in the sliding groove on the plate. The shaft at the connection between the connecting rod and the crank is slidably connected in the arc-shaped groove to limit the rotation range of the crank.

[0009] Furthermore, the lower end of the clay filling tube is provided with a filling port communicating with its interior, and a handrail plate is fixedly connected to the outer wall of the clay filling tube below the filling port; a measuring hole is provided on the side wall of the middle part of the support plate of the clay filling tube.

[0010] Furthermore, a drive motor is provided at the lower end of the spiral conveying rod inside the mud filling pipe;

[0011] Furthermore, the lower end of the guide tube is also provided with an automatically closing door, which is rotatably connected to the plate and has a torsion spring at the pivot point to contact the door and close it.

[0012] Furthermore, the spiral conveying rod inside the clay filling pipe and the motor connected thereto are detachable.

[0013] Furthermore, the present invention also provides a method for using an upward fan-shaped deep hole filling device in an underground metal mine, comprising the following steps:

[0014] S1. Drill an upward fan-shaped medium-deep hole in the ore block, and insert the upper support plate of this device into the blast hole until it covers the lower support plate of the blast hole.

[0015] S2. Hold the handle plate with both hands and rotate the mud filling tube. The two radial edges of the support plate contact the two corresponding plane walls of the borehole as support points. Continue to rotate until the upper and lower blocking plates on the support plate slide outward to contact the arc-shaped sidewall of the borehole, thus fixing the entire filling device and completing the plugging before loading the borehole.

[0016] S3. Pour the clay into the filling port and convey it to the side wall of the upper support plate through the screw conveyor. When the top is filled to a certain amount, wait for the top clay to solidify and adhere to the borehole.

[0017] S4. At this time, rotate the filler tube in the opposite direction to retract the upper and lower blocking plates inward by a certain distance, reducing their friction with the edge of the borehole, so that the entire device can creep downward; at the same time, scrape the filler between the support plates downward.

[0018] S5. Insert the charging tube in the charging car into the guide tube of the device, gradually move the device downward, and pump the emulsion explosive backward.

[0019] S6. When the emulsion explosive is about to be filled to a sufficient amount, rotate the filler tube in the forward direction again, so that the upper and lower blocking plates extend outward and lock the device. At this time, continue to pump in the emulsion explosive to make it sufficient and fill it tightly.

[0020] S7. Continue to pour in the gunning clay through the filling port. At this time, the upper port of the gunning clay is blocked by the emulsion explosive, and the gunning clay can only flow out from the side hole to fill the space between the two support plates.

[0021] S8. Remove the power source components at the bottom and proceed with the subsequent blasting work.

[0022] The beneficial effects of this invention are:

[0023] 1. This invention uses a fan-shaped support plate with upper and lower blocking plates that slide outwards along the arc edge to contact the entire arc-shaped surface of the borehole, thereby fixing the entire device and supporting the borehole clay for shaping and blocking. This allows the fluid emulsion explosive to be fixed and fully filled into the explosive borehole, making operation convenient.

[0024] 2. The present invention improves the firmness and stability of the entire device within the blast hole by having two support plates, one above and one below, contact the arc-shaped surface of the blast hole.

[0025] 3. This invention uses a spiral conveyor rod to transport the filling clay upwards, improving the efficiency of filling holes with the clay and thus improving the filling efficiency of the emulsion explosive.

[0026] 4. The pre-filling of the borehole in this invention prevents the explosive from overflowing from the borehole opening due to its own fluidity and gravity during the charging process. This will greatly improve the blasting effect at the bottom of the upward-facing fan-shaped borehole.。 Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments 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 creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of an upward fan-shaped medium-deep hole filling device for underground metal mines.

[0029] Figure 2 This is a partial cross-sectional view of an upward fan-shaped medium-deep hole packing device for underground metal mines;

[0030] Figure 3 An exploded view of the support plate of an upward fan-shaped deep hole filling device for underground metal mines;

[0031] Figure 4 This is a diagram showing the initial position of the support plate of an upward fan-shaped deep-hole filling device for underground metal mines.

[0032] Figure 5 This is a diagram showing the position of the support plate of an upward-sloping, fan-shaped, medium-deep hole filling device in an underground metal mine after circumferential sliding.

[0033] Figure 6 This is a schematic diagram of the overall upward-facing, fan-shaped, medium-deep hole filling device for underground metal mines;

[0034] Figure 7 This is a partially enlarged structural diagram of an upward fan-shaped deep-hole packing device for underground metal mines;

[0035] Figure 8 This is a schematic diagram of a partial cross-section of a deep-hole packing device for an upward-facing fan-shaped underground metal mine.

[0036] The labels in the diagram represent: 1-slurry filling pipe, 101-filling port, 102-handle plate, 103-drive motor, 104-screw conveyor rod, 2-guide pipe, 3-support plate, 301-plate body, 3011-slide groove, 3012-arc groove, 302-lower blocking plate, 3021-guide tooth a, 3022-slider a, 303-connecting rod, 304-crank, 306-shaft, 307-upper blocking plate, 3071-slider b, 3072-guide tooth b, 308-break, 201-gate body, 202-torsion spring, 301a-lower plate body, 301a1-support block. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] See Figures 1 to 5 This invention relates to a device for filling an upward-facing, fan-shaped, deep-hole profile in an underground metal mine. It includes a clay filling pipe 1 for conveying clay, a guide pipe 2 for inserting a charging pipe from a charging vehicle, and a support plate 3 that extends outwards from the arc edge and is fixed to the sidewall of the upward-facing deep-hole. Two support plates 3 are provided, fixed at opposite ends near the guide pipe 2. The guide pipe connects the upper side of the upper support plate 3 and the lower side of the lower support plate. An automatically closing door 201 is located at the lower end of the guide pipe 2. The door 201 is rotatably connected to a support block 301a1 on the plate, and a torsion spring 202 contacts the door 201 at its pivot point, allowing the door 201 to automatically close under the action of the torsion spring 202 after it has been opened. The two support plates 3 are stably fixed to the sidewall of the upward-facing, fan-shaped deep-hole. The clay filling pipe 1 is rotatably connected to the support plates 3 at both ends. After the support plates 3 are fixed in the fan-shaped deep-hole, they can rotate relative to the support plates 3. The filler tube 1 is equipped with a spiral conveyor rod 104 inside, which conveys the filler clay upwards to form a filler clay layer, thereby supporting the emulsion explosive above and improving the conveying efficiency of the filler clay. The lower end of the filler tube 1 is also equipped with a filling port 101 connected to its interior, through which filler clay can be placed and conveyed. A handrail plate 102 is fixedly connected to the outer wall of the filler tube 1 below the filling port 101, allowing the operator to hold the handrail plate 102 for operation. A drive motor 103 is also provided at the lower end of the spiral conveyor rod 104 inside the filler tube 1 to provide a power source for the spiral conveyor rod 104.

[0040] Example 2

[0041] See Figures 1 to 5The diagram illustrates a sealing device for an upward-facing fan-shaped deep hole in an underground metal mine, comprising a support plate 3. The support plate 3 includes a fan-shaped plate body 301, corresponding to the upward-facing fan-shaped deep hole shape of the metal mine. The plate body 301 has an upper sealing plate 307 and a lower sealing plate 302 on its upper and lower sides, respectively, which can slide outwards along two radial edges. After sliding, the upper sealing plate 307 and lower sealing plate 302 contact the upward-facing arc-shaped deep hole wall for compression and fixation. Inclined guide teeth b3072 and a3021 are respectively provided at the transition between the upper sealing plate 307 and lower sealing plate 302, engaging accordingly. When the lower sealing plate 302 slides outwards, the guide teeth a3021 and b3072 engage and move relative to each other, contacting the upper sealing plate 307 and sliding circumferentially with the lower sealing plate 302. The lower blocking plate 302 is also provided with a connecting rod 303 and a crank 304 that are rotatably connected to it. The other end of the crank 304 is fixedly connected to the outer wall of the clay filling tube 1. When the operator holds the handle plate 102 and rotates the clay filling tube 1 and the crank 304 together, the lower blocking plate 302 can be driven to slide circumferentially. And through the mutual contact between the guide teeth a3021 and b3072, the upper blocking plate 307 is driven to slide circumferentially, thereby contacting the arc wall of the fan-shaped deep hole.

[0042] A break 308 is provided at the transition between the upper blocking plate 307 and the lower blocking plate 302 on the support plate 3. The break 308 is used to prevent the guide teeth a3021 and b3072 from meshing with each other, thereby achieving mutual contact. The plate body 301 is also provided with a sliding groove 3011 and an arc-shaped groove 3012. The upper blocking plate 307 and the lower blocking plate 302 are respectively provided with sliders b3071 and a3022, which slide in the sliding groove 3011 on the plate body 301, so that sliders b3071 and a3022 can slide in the sliding groove 3011. The rotating shaft 306 at the rotatable connection between the connecting rod 303 and the crank 304 is slidably connected in the arc-shaped groove 3012, limiting the rotation range of the crank 304.

[0043] Example 3

[0044] This embodiment is referred to Figures 1 to 5 This embodiment provides a method for using an upward fan-shaped deep hole filling device in an underground metal mine, comprising the following steps:

[0045] S1. Drill an upward fan-shaped medium-deep hole in the ore block, and insert the upper support plate of this device into the blast hole until it covers the lower support plate of the blast hole.

[0046] S2. Hold the handle plate with both hands and rotate the mud filling tube. The two radial edges of the support plate contact the two corresponding plane walls of the borehole as support points. Continue to rotate until the upper and lower blocking plates on the support plate slide outward to contact the arc-shaped sidewall of the borehole, thus fixing the entire filling device and completing the plugging before loading the borehole.

[0047] S3. Pour the clay into the filling port and convey it to the side wall of the upper support plate through the screw conveyor. When the top is filled to a certain amount, wait for the top clay to solidify and adhere to the borehole.

[0048] S4. At this time, rotate the filler tube in the opposite direction to retract the upper and lower blocking plates inward by a certain distance, reducing their friction with the edge of the borehole, so that the entire device can creep downward; at the same time, scrape the filler between the support plates downward.

[0049] S5. Insert the charging tube in the charging car into the guide tube of the device, gradually move the device downward, and pump the emulsion explosive backward.

[0050] S6. When the emulsion explosive is about to be filled to a sufficient amount, rotate the filler tube in the forward direction again, so that the upper and lower blocking plates extend outward and lock the device. At this time, continue to pump in the emulsion explosive to make it sufficient and fill it tightly.

[0051] S7. Continue to pour in the gunning clay through the filling port. At this time, the upper port of the gunning clay is blocked by the emulsion explosive, and the gunning clay can only flow out from the side hole to fill the space between the two support plates.

[0052] S8. Remove the power source components at the bottom and proceed with the subsequent blasting work.

[0053] Example 4

[0054] See Figures 1 to 5 This embodiment provides a preferred solution for an upward fan-shaped deep hole filling device for underground metal mines. The spiral conveying rod 104 inside the mud filling pipe and the motor 103 connected thereto can be removed from the entire device. The support plate 3 is made of disposable material (such as wood). If the mud filling is not compacted during the filling process, the support plate 3 can be left in the explosive hole to block and support the emulsion explosive and mud.

[0055] If a certain amount of gunpowder is first loaded into the upper part of the support plate 3, during the process of adding the emulsion explosive, the emulsion explosive will press the gunpowder downward. During the downward pressing process, the gunpowder will encounter the obstruction of the support plate and be squeezed and compacted against the side wall of the explosive hole, and the support will be firm. Then the entire device can be disassembled and removed.

[0056] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for filling upward fan-shaped medium-deep holes in underground metal mines, characterized in that, The device includes a plugging and filling tube, a guide tube, and a support plate. Two support plates are fixed to both ends of the guide tube. The plugging and filling tube is rotatably connected to the support plates at both ends, and a spiral conveying rod is installed inside the plugging and filling tube. Each support plate has a fan-shaped body with an upper and lower plugging plate on its upper and lower sides, which can slide outwards along two radial edges. Inclined guide teeth b and a are respectively provided at the transition between the upper and lower plugging plates, meshing correspondingly. When the lower plugging plate slides outwards, guide teeth a and b mesh and move relative to each other, contacting the upper plugging plate and sliding circumferentially with the lower plugging plate. The lower plugging plate also has a connecting rod and a crank rotatably connected to it in sequence. The other end of the crank is fixedly connected to the outer wall of the plugging and filling tube. The plugging and filling tube and the crank rotate as a unit, driving the lower plugging plate to slide circumferentially. The lower end of the plugging material filling tube is also provided with a filling port communicating with its interior. A handrail plate is also fixedly connected to the outer wall of the plugging material filling tube below the filling port. A side hole is provided on the side wall of the middle part of the support plate of the plugging material filling tube.

2. The underground metal mine upward fan-shaped deep hole filling device according to claim 1, characterized in that, The upper and lower blocking plates on the support plate have a break at the transition point to prevent guide teeth a and b from meshing with each other.

3. The underground metal mine upward fan-shaped deep hole filling device according to claim 1, characterized in that, The plate is also provided with a sliding groove and an arc-shaped groove. The upper blocking plate and the lower blocking plate are respectively provided with slider b and slider a, which slide in the sliding groove on the plate. The shaft at the connection between the connecting rod and the crank is slidably connected in the arc-shaped groove to limit the rotation range of the crank.

4. The upward fan-shaped deep hole filling device for underground metal mines according to claim 1, characterized in that, The lower end of the spiral conveyor rod inside the plugging tube is equipped with a drive motor.

5. The method of using the upward fan-shaped deep hole filling device for underground metal mines according to claim 1, characterized in that, The method includes the following steps: S1. Drill an upward fan-shaped medium-deep hole in the ore block, and insert the upper support plate of this device into the blast hole until it covers the lower support plate of the blast hole. S2. Hold the handrail disc with both hands and rotate the plugging filling tube. The two radial edges of the support plate contact the two corresponding plane holes of the blast hole as support points. Continue to rotate until the upper and lower plugging plates on the support plate slide outward to contact the arc-shaped side wall of the blast hole, fix the entire plugging device, and complete the plugging before the blast hole is loaded. S3. Pour the gunning clay into the filling port and convey it to the side wall of the upper support plate through the screw conveyor. When the top is filled to a certain amount, wait for the top gunning clay to solidify and adhere to the gun hole. S4. At this time, rotate the plugging and filling pipe in the opposite direction to retract the upper and lower plugging plates inward by a certain distance, reduce the friction between them and the edge of the borehole, and allow the entire device to creep downward; at the same time, scrape the sludge between the support plates downward. S5. Insert the charging tube in the charging car into the guide tube of the device, gradually move the device downward, and pump the emulsion explosive backward. S6. When the emulsion explosive is about to be filled to a sufficient amount, rotate the filling tube in the forward direction again to make the upper and lower blocking plates extend outward and lock the device. At this time, continue to pump in the emulsion explosive to make it sufficient and fill it tightly. S7. Continue to pour in the gunning clay through the filling port. At this time, the upper port of the gunning clay is blocked by the emulsion explosive, and the gunning clay can only flow out from the side hole to fill the space between the two support plates. S8. Remove the power source components at the bottom and proceed with the subsequent blasting work.

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