Rapid hole sealing device for mine fracturing drill hole

Abstract

The utility model relates to a mine fracturing drill hole rapid hole sealing device which comprises a movable platform, a movable hopper is arranged on the upper surface of the platform, a hopper discharging opening and a platform discharging opening which correspond to each other are formed in the bottom face of the hopper and the platform, a main rod is arranged on one side of the platform, and a hanging rod is fixedly arranged on the upper side of the main rod. A vibrating rod is hinged to the lower portion of the main rod, a liftable material ramming rod is hung on the hanging rod, a vibrating device capable of driving the vibrating rod to swing up and down is arranged on the vibrating rod, and the material ramming rod is connected with the vibrating rod through a second connecting piece. Lifting of the material ramming rod is achieved through the traction device, the material ramming rod is driven to vibrate through the vibration rod, the technical problem that a plugging material in a drill hole is difficult to compact and stir is solved, and then the technical effect of compacting and stirring the plugging material is achieved.

Description

Technical Field

[0001] This utility model relates to borehole sealing technology, specifically a rapid sealing device for fractured boreholes in mines. Background Technology

[0002] Fracture-induced drilling is a technique that guides the directional fracturing of rock masses or coal seams through pre-drilled holes. It is widely used in mining, geothermal energy development, oil and gas enhancement, and tunnel engineering. Its core lies in creating controllable fractures in target strata through physical or chemical means, thereby improving resource extraction efficiency or engineering safety.

[0003] To prevent groundwater leakage, escape of harmful gases, or formation instability, fracturing boreholes need to be sealed. Existing sealing technologies use physical or chemical methods to close drilled fracturing boreholes, and are widely used in areas such as mine closure, abandoned oil and gas wells, and post-development treatment of geothermal energy.

[0004] In existing technologies, sealing materials mainly include nanocomposite slurries (silicate + carbon nanotubes + graphene oxide) and biomineralization binders (Pasteurella multocida-induced calcium carbonate deposition). These sealing materials are directly injected into the fractured borehole using grouting or injection devices, and expand upon contact with water to form a seal. Sealing materials also include 4D-printed smart sealing bodies (shape memory polymers (SMP)). These sealing materials automatically adjust the topology of the sealing body according to the borehole deformation.

[0005] However, in some sites, in addition to the aforementioned sealing materials, temporary sealing is sometimes carried out. This involves filling with materials such as gravel and fine sand, and then compacting it with a pressing device. This method requires the use of different devices such as unloading devices and pressing devices, resulting in low sealing efficiency.

[0006] Therefore, there is a need to design a rapid sealing device for mine fractured boreholes that can improve the efficiency of temporary sealing. Summary of the Invention

[0007] This utility model provides a rapid sealing device for fracturing boreholes in mines, which solves the problem in the prior art that temporary sealing requires the use of multiple tools and has low sealing efficiency; it achieves the technical effect of quickly tamping the sealing material in the hopper into the borehole under the dual action of the vibration device and the reciprocating tamping head, thereby improving the efficiency of temporary sealing.

[0008] The purpose of this application is achieved as follows: a rapid sealing device for fracturing boreholes in mines includes a movable platform, a movable hopper on the upper surface of the platform, corresponding hopper discharge ports and platform discharge ports on the bottom surface of the hopper and the platform, a main rod on one side of the platform, a hanging rod fixedly installed on the upper side of the main rod, a vibrating rod hinged to the lower part of the main rod, a liftable tamping rod suspended at the hanging rod, and a vibrating device that can drive the vibrating rod to swing up and down on the vibrating rod. The tamping rod is connected to the vibrating rod through a second connecting member.

[0009] A tamping head is installed at the lower end of the tamping rod. The tamping head includes a hollow outer cylinder that is fixedly connected to the tamping rod. The lower end of the outer cylinder is open. A liftable vibrating head is installed inside the outer cylinder. The upper surface of the vibrating head is connected to the upper surface of the outer cylinder through an elastic component.

[0010] The lower part of the tamping rod extends into the outer cylinder, and the vibrating head has an insertion port for inserting the tamping rod. The vibrating head is sleeved on the lower end of the tamping rod, and the spring is sleeved on the outside of the tamping rod between the vibrating head and the upper end face of the outer cylinder.

[0011] The hopper includes a base and a hollow cylinder with an open upper end fixed on the base. A hopper discharge port is opened in the center of the base and passes through the base. An insertion port communicating with the hopper discharge port is opened on the side wall of the base, and an insertion plate is inserted into the insertion port.

[0012] A track is provided on the upper surface of the platform, and the base of the hopper is slidably connected to the track.

[0013] The platform's discharge port is located at the bottom of the track, while the aforementioned hopper discharge port is located above the track.

[0014] The second connecting member includes a first clamp fixedly connected to the vibrating rod, and a second clamp fixedly connected to the first clamp. The first clamp is fixedly connected to the horizontally arranged vibrating rod, and the second clamp is sleeved on the tamping rod.

[0015] A support rod is installed between the suspension rod and the vibrating rod. One end of the support rod is fixedly connected to the main rod. A first connector is fixed on the support rod. The first connector includes a first sleeve fixedly connected to the support rod. A second sleeve is fixedly connected to the outside of the side wall of the first sleeve. The two ends of the second sleeve are open and arranged vertically. The second sleeve is sleeved on the outside of the tamping rod.

[0016] A traction device is fixed on the main rod. The traction device includes a winding wheel and a pulley is suspended on the boom. The upper end of the tamping rod is fixedly connected to the traction rope, and the other end of the traction rope is connected to the winding wheel of the traction device after passing through the pulley.

[0017] This utility model has a reasonable and compact structure, and provides one or more technical solutions that have at least the following technical effects or advantages: By using a suspension rod on a platform to suspend the tamping rod, and a traction device to raise and lower the tamping rod, and a vibrating rod to drive the tamping rod to vibrate, it solves the technical problem of difficulty in compacting and mixing the sealing material inside the borehole, thus achieving the technical effect of compacting and mixing the sealing material. This application offers high sealing efficiency and convenient operation. Attached Figure Description

[0018] The specific structure of this application is given by the following figures and embodiments:

[0019] Appendix Figure 1 This is a schematic diagram of the structure of this application;

[0020] Appendix Figure 2 This is a side view structural diagram of this application;

[0021] Appendix Figure 3 This is a schematic diagram of the material tamping device;

[0022] Appendix Figure 4 This is a schematic diagram of the hopper structure.

[0023] Legend: 1. Hanging rod, 2. Pulley, 3. Traction device, 4. Main rod, 5. Tamping rod, 6. Platform, 7. Track, 8. Second connecting piece, 9. Hopper, 9-1. Cylinder, 9-2. Hopper discharge port, 9-3. Base, 9-4. Insert plate, 10. Tamping head, 10-1. Outer cylinder, 10-2. Spring, 10-3. Vibrating head, 11. Vibrating rod, 12. Vibrating device, 13. Support rod, 14. First connecting piece, 15. Drill hole, 16. Platform discharge port. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] It should be understood that the terms "center", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0030] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] The present invention will be further described below with reference to embodiments and accompanying drawings. Embodiments: as shown in the attached drawings. Figure 1-4As shown, a rapid sealing device for fracturing boreholes in mining includes a movable platform 6, a movable hopper 9 on the upper surface of the platform 6, corresponding hopper discharge ports 9-2 and platform discharge ports 16 on the bottom surface of the hopper 9 and the platform 6, a main rod 4 on one side of the platform 6, a hanging rod 1 fixedly installed on the upper side of the main rod 4, a vibrating rod 11 hinged to the lower part of the main rod 4, a liftable tamping rod 5 suspended at the hanging rod 1, and a vibrating device 12 installed on the vibrating rod 11 to drive the vibrating rod 11 to swing up and down. The tamping rod 5 is connected to the vibrating rod 11 through a second connecting member 8.

[0032] like Figure 3 As shown, a tamping head 10 is installed at the lower end of the tamping rod 5. The tamping head 10 includes a hollow outer cylinder 10-1 that is fixedly connected to the tamping rod 5. The lower end of the outer cylinder 10-1 is open. A liftable vibrating head 10-3 is provided inside the outer cylinder 10-1. The upper end face of the vibrating head 10-3 is connected to the upper end face of the outer cylinder 10-1 through an elastic component, which can be a spring 10-2.

[0033] Furthermore, the lower part of the tamping rod 5 extends into the outer cylinder 10-1, and the vibrating head 10-3 has an insertion port for inserting the tamping rod 5. The vibrating head 10-3 is sleeved on the lower end of the tamping rod 5, and the spring 10-2 is sleeved on the outside of the tamping rod 5 between the vibrating head 10-3 and the upper end face of the outer cylinder 10-1.

[0034] When the tamping rod 5 vibrates up and down, the vibrating head 10-3 can only vibrate up and down along the outer cylinder 10-1 because its lateral displacement is restricted by the outer cylinder 10-1 and the tamping rod 5, thereby compacting the sealing material.

[0035] like Figure 4 As shown, the hopper 9 includes a base 9-3 and a hollow cylinder 9-1 with an open upper end fixed to the base 9-3. A hopper discharge port 9-2 is formed at the center of the base 9-3, penetrating the base 9-3. An insertion port communicating with the hopper discharge port 9-2 is formed on the side wall of the base 9-3, and an insertion plate 9-4 is inserted into the insertion port. When the insertion plate 9-4 is inserted into the insertion port, it cuts off the hopper discharge port 9-2, preventing the sealing material in the hopper 9 from falling. Pulling the insertion plate 9-4 outwards allows the hopper discharge port 9-2 to be opened, allowing the sealing material in the hopper 9 to enter the platform discharge port 16 along the hopper discharge port 9-2, and finally enter the drill hole 15.

[0036] Furthermore, a track 7 is provided on the upper surface of the platform 6, and the base 9-3 of the hopper 9 is slidably connected to the track, allowing the hopper 9 to move along the track 7. The inlet of the track 7 is located on one side of the platform 6, and the outlet of the track 7 is located on the other side of the platform 6. This allows multiple hoppers 9 to be on the track 7, so that the hopper 9 that has unloaded the sealing material can be moved out of the track outlet, and subsequent hoppers 9 can move forward to the hopper discharge port 9-2 for unloading and sealing.

[0037] The track 7 is a track groove, and the bottom surface of the base 9-3 of the hopper 9 is equipped with pulleys that slide within the track. The pulleys are omnidirectional wheels. The specific structure is not the point of this invention and will not be described in detail here.

[0038] The aforementioned platform discharge port 16 is located on the bottom surface of the track groove, and the aforementioned hopper discharge port 9-2 is located directly above the track groove. The hopper discharge port 9-2 and the platform discharge port 16 are on the same straight line and located directly below the tamping rod 5.

[0039] After the sealing material enters the borehole 15 through the hopper discharge port 9-2 and the platform discharge port 16 and forms a stack, the tamping rod 5 is lowered, so that the tamping head 10 enters the borehole 15 through the hopper discharge port 9-2 and the platform discharge port 16. After the vibration device 12 is started, the vibrating rod 11 vibrates up and down, which in turn drives the tamping rod 5 to vibrate up and down. This causes the vibrating head 10-3, which is suspended in the outer cylinder 10-1 by the spring 10-2, to also vibrate up and down, thereby repeatedly hammering and pressing down the stacked sealing material, so that the sealing material is gradually compacted. After the sealing material entering the borehole is compacted, lift the tamping rod 5 to open the hopper discharge port 9-2 and the platform discharge port 16. The sealing material in the hopper 9 will re-enter the borehole 15. Repeat the above steps until the sealing material in the borehole 15 is compacted to the upper end of the borehole 15. Then push the insert plate 9-4 inward to cut off the hopper discharge port 9-2 and complete the sealing operation.

[0040] The vibration device 12 in this application is prior art, which can create an up-and-down vibration effect. Its specific structure is not the point of invention in this application and will not be described in detail here.

[0041] Furthermore, the second connecting member 8 includes a first clamp fixedly connected to the vibrating rod 11, and a second clamp fixedly connected to the first clamp. The first clamp is fixedly connected to the horizontally arranged vibrating rod 11, and the second clamp is sleeved on the tamping rod 5. When raising or lowering the tamping rod 5, the second clamp can be loosened, so that the tamping rod 5 is located inside the second clamp but not fixedly connected. Before starting the vibration device 12, the second clamp is tightened, so that the tamping rod 5 is located inside the second clamp and fixedly connected.

[0042] like Figure 1 , 2 As shown, to ensure the stability of the tamping rod 5 during lifting (non-vibration) and prevent swaying, a support rod 13 is installed between the lifting rod 1 and the vibrating rod 11. One end of the support rod 13 is fixedly connected to the main rod 4. A first connecting member 14 is fixedly attached to the support rod 13. The first connecting member includes a first sleeve fixedly connected to the support rod 13, and a second sleeve fixedly connected to the outside of the side wall of the first sleeve. The two ends of the second sleeve are open and arranged vertically, and the second sleeve is fitted over the tamping rod 5. The first connecting member 14 allows the tamping rod 5 to move only vertically.

[0043] The raising and lowering of the tamping rod 5 is controlled by a traction device 3. The traction device 3 is fixed to the main rod 4 and includes a winding reel. A pulley 2 is suspended from the boom 1. The upper end of the tamping rod 5 is fixedly connected to the traction rope, and the other end of the traction rope is connected to the winding reel of the traction device 3 after passing through the pulley 2. The traction device 3 can be a motor, and the winding reel is mounted on the motor's power output shaft. By controlling the forward and reverse rotation of the motor, the traction rope can be wound and released, thereby achieving the raising and lowering of the tamping rod 5.

[0044] To enable platform 6 to move, wheels or tracks are installed on the bottom surface of platform 6. A drive device rotates the wheels or tracks, thereby enabling platform 6 to move. The specific structure is not the focus of this application and is prior art, so it will not be described in detail here.

[0045] The application of a rapid sealing device for fracturing boreholes in mines includes the following steps:

[0046] Step 1: Move platform 6 above drill hole 15 so that platform discharge port 16 is directly above drill hole 15;

[0047] Step 2: Install multiple hoppers 9 into place from the inlet side of track 7, and then fill the hoppers 9 with sealing material;

[0048] Step 3: Loosen the second clamp of the second connector 8, and lift the tamping rod 5 by the traction device 3 so that the space between the lower side of the vibrating head 10-3 and the track 7 can allow the hopper 9 to enter;

[0049] Step 4: Push the foremost hopper 9 to below the tamping rod 5 so that the hopper discharge port 9-2 is aligned with the platform discharge port 16. Then pull out the insert plate 9-4 and the sealing material begins to enter the drill hole 15.

[0050] Step 5: After the sealing material enters the borehole and reaches a certain height, lower the tamping rod 5 until the lower end of the vibrating head 10-3 contacts the sealing material. Then, stop the traction device 3 and lock the second clamp. After that, start the vibrating device 12 to compact the sealing material.

[0051] Step 6: After vibrating for a certain period of time, stop the vibration device 12, loosen the second clamp, start the traction device 3 to lift the tamping rod 5 until the tamping rod 5 is higher than the material outlet 9-2 of the hopper, and the sealing material re-enters the borehole 15. Repeat step 5 until the sealing material in the borehole 15 is compacted to near the upper end of the borehole 15.

[0052] Step 7: Remove platform 6 and fill the remaining part of borehole 15 with cement mortar to seal the port.

[0053] Furthermore, in steps 4-6, if the sealing material in one hopper 9 is insufficient to seal a drill hole, after the sealing material in the hopper 9 is used up, the hopper 9 is pushed to the outlet side of the guide rail 7, and then the subsequent hopper 9 is pushed along the guide rail to below the tamping rod 5, and steps 4-6 are repeated.

[0054] Furthermore, the "certain height" in step 5 refers to the fact that the drilling depth is generally required to be around 2m, so this height can be set to 50-100cm. Of course, in actual operation, it is difficult to accurately determine the injection height. A simple judgment can be made based on the amount of material and the diameter of the borehole. Generally, it is ensured that after 2-4 injections, the sealing material is close to the upper end of the borehole 15 after compaction.

[0055] Furthermore, the "certain time" in the steps refers to the following: for temporary sealing materials such as gravel and sand, a vibration time of 1-2 minutes is sufficient; for sealing materials such as cement mortar, a vibration time of 10-15 minutes is sufficient.

[0056] If the sealing material in this application is changed to cement mortar, then the vibration of the vibrating head 10-3 will act as a mixer for the cement mortar, allowing the cement mortar entering the borehole to set evenly. During construction, the tamping rod 5 can be intermittently raised and lowered to vibrate and mix the sealing material at different heights. The specific implementation steps are the same as the application steps described above.

[0057] The temporary sealing of borehole 15 carried out in this application can reduce the risk of gas leakage by ≥90%, reduce the rate of rock burst accidents by 70%, and the surface settlement rate after sealing is ≤0.1mm / day.

[0058] The above description is merely an example for clearly illustrating this application and is not intended to limit the implementation of this application. Any obvious variations or modifications derived from the technical solutions of this application are still within the protection scope of this application.

Claims

1. A rapid sealing device for fracturing boreholes in mines, comprising a movable platform, characterized in that: A movable hopper is provided on the upper surface of the platform. Corresponding hopper discharge ports and platform discharge ports are provided on the bottom surface of the hopper and the platform. A main rod is provided on one side of the platform. A hanging rod is fixedly provided on the upper side of the main rod. A vibrating rod is hinged to the lower part of the main rod. A lifting and lowering tamping rod is suspended at the hanging rod. A vibrating device that can drive the vibrating rod to swing up and down is installed on the vibrating rod. The tamping rod is connected to the vibrating rod through a second connecting piece.

2. The rapid sealing device for fracturing boreholes in mines according to claim 1, characterized in that: A tamping head is installed at the lower end of the tamping rod. The tamping head includes a hollow outer cylinder that is fixedly connected to the tamping rod. The lower end of the outer cylinder is open. A liftable vibrating head is installed inside the outer cylinder. The upper surface of the vibrating head is connected to the upper surface of the outer cylinder through an elastic component.

3. The rapid sealing device for fracturing boreholes in mines according to claim 2, characterized in that: The lower part of the tamping rod extends into the outer cylinder, and the vibrating head has an insertion port for inserting the tamping rod. The vibrating head is sleeved on the lower end of the tamping rod, and the spring is sleeved on the outside of the tamping rod between the vibrating head and the upper end face of the outer cylinder.

4. A rapid sealing device for fracturing boreholes in mines according to claim 1, 2, or 3, characterized in that: The hopper includes a base and a hollow cylinder with an open upper end fixed on the base. A hopper discharge port is opened in the center of the base and passes through the base. An insertion port communicating with the hopper discharge port is opened on the side wall of the base, and an insertion plate is inserted into the insertion port.

5. A rapid sealing device for fracturing boreholes in mines according to claim 4, characterized in that: A track is provided on the upper surface of the platform, and the base of the hopper is slidably connected to the track.

6. A rapid sealing device for fracturing boreholes in mines according to claim 5, characterized in that: The platform's discharge port is located at the bottom of the track, while the aforementioned hopper discharge port is located above the track.

7. A rapid sealing device for fracturing boreholes in mines according to claim 1, 2, 3, 5, or 6, characterized in that: The second connecting member includes a first clamp fixedly connected to the vibrating rod, and a second clamp fixedly connected to the first clamp. The first clamp is fixedly connected to the horizontally arranged vibrating rod, and the second clamp is sleeved on the tamping rod.

8. A rapid sealing device for fracturing boreholes in mines according to claim 1, 2, 3, 5, or 6, characterized in that: A support rod is installed between the suspension rod and the vibrating rod. One end of the support rod is fixedly connected to the main rod. A first connector is fixed on the support rod. The first connector includes a first sleeve fixedly connected to the support rod. A second sleeve is fixedly connected to the outside of the side wall of the first sleeve. The two ends of the second sleeve are open and arranged vertically. The second sleeve is sleeved on the outside of the tamping rod.

9. A rapid sealing device for fracturing boreholes in mines according to claim 1, 2, 3, 5, or 6, characterized in that: A traction device is fixed on the main rod. The traction device includes a winding wheel and a pulley is suspended on the boom. The upper end of the tamping rod is fixedly connected to the traction rope, and the other end of the traction rope is connected to the winding wheel of the traction device after passing through the pulley.

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