A quick plugging and isolating device for the end of a coal mine underground mining chamber filling

Abstract

The utility model discloses a kind of quick plugging isolation devices for coal mine underground mining chamber filling terminal, belong to the filling support tool technical field of mine or tunnel, including support plate mechanism, support plate mechanism outer surface is equipped with height adjusting assembly and support column assembly;Support plate mechanism includes several vertical arrangement and connection support plate structural member, and several vertical arrangement distribution telescopic modules are oppositely arranged in the side of support plate structural member;Telescopic module includes shell and telescopic part, and screw rod assembly is associated between shell and telescopic part, screw rod assembly includes horizontally arranged screw rod body and screw nut, and telescopic part realizes telescopic action by screw rod assembly;It also includes the flexible sealing gasket cloth of being equipped in inner surface.By the modularization setting support plate mechanism and the multiple telescopic modules of vertical arrangement distribution, the contact matching ability of this isolation device and different mining chamber size and irregular chamber wall is enhanced, and the reliability of plugging isolation is enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of filling material support tools for mines or tunnels, and in particular to a rapid sealing and isolation device installed at the periphery of the filling of underground coal mine tunnels to prevent the leakage of filling slurry. Background Technology

[0002] Backfilling mining is a mining method that involves filling the goaf with backfill material during ore extraction, transportation, and other operations. The purpose of backfilling is to support the rocks on both sides of the goaf and form a stratified mining floor. It is applicable in many scenarios, primarily including: deposits where the ore and surrounding rock are unstable and large exposed surfaces are not permitted; deposits requiring surface protection; rare and precious metal or high-grade deposits; sulfide deposits with spontaneous combustion; and deposits with complex occurrence conditions. Due to its advantages in recovering mineral resources and protecting the underground and surface environment, especially in recent years with the continuous advancement of backfilling materials, processes, pipeline transportation equipment, and technologies, backfilling mining has been widely used in non-ferrous metal and precious metal mines.

[0003] In underground coal mine backfilling mining, the main purpose is to backfill mined-out chambers (such as stopes and roadways) to control ground pressure, manage tailings, and protect the surface environment. Before backfilling operations, robust sealing and isolation facilities must be established at the entrance and / or exit of the chamber to withstand the enormous lateral pressure generated by the unconsolidated backfill slurry and prevent its loss. These sealing and isolation structures are typically installed around the perimeter of the backfill area.

[0004] Traditional sealing and isolation structures mainly include the following types: 1. Constructing a concrete retaining wall. Constructing a wall is the most traditional method of sealing. This method requires on-site formwork and concrete pouring, which not only has problems such as long construction period, high labor intensity, difficult demolition, and non-reusability, but also has the defect that the joint between the concrete and the irregular cave wall is prone to "grout leakage" due to poor sealing. 2. Bagged Filler Wall Construction. Bagged filler wall construction involves stacking woven bags filled with filling material to form a wall. Although this method is simple, the resulting wall has poor overall integrity, low pressure resistance, and poor sealing effect, and also suffers from inefficiency and material waste. 3. Precast component sealing. Precast component sealing uses steel or precast concrete slabs for sealing. However, they are mostly custom widths, resulting in poor lateral adaptability to different widths and poor fit with the tunnel wall. Utility Model Content

[0005] In view of at least one of the above-mentioned technical problems, this utility model provides a rapid sealing and isolation device for the end of filling in underground coal mine tunnels. Through a modularly configured support plate mechanism and multiple vertically arranged telescopic modules, the device enhances its contact compatibility with different tunnel sizes and irregular tunnel walls, thereby improving the reliability of the sealing and isolation. The specific technical solution is as follows: A rapid sealing and isolation device for the end of backfilling in underground coal mine tunnels includes a support plate mechanism. The outer surface of the support plate mechanism is equipped with a height adjustment component and a support column assembly. The support plate mechanism includes several vertically arranged and connected support plate structural members. Several vertically arranged telescopic modules are provided on each side of the support plate structural members. Each telescopic module includes an outer shell and a telescopic component. A screw assembly connects the outer shell and the telescopic component. The screw assembly includes a horizontally arranged screw body and a screw nut. The telescopic component achieves telescopic movement through the screw assembly. The device also includes a flexible sealing gasket on the inner surface.

[0006] In some embodiments of this disclosure, the support plate structure includes a central vertical plate, with adjustable vertical plates provided on both sides of the central vertical plate, and the central vertical plate and the adjustable vertical plates are detachably connected; the inner side of the outer shell is hinged to the outer side of the adjustable vertical plate.

[0007] In some embodiments of this disclosure, the height adjustment component includes an upper column and a lower column, and the distance between the upper column and the lower column is adjusted by a vertically arranged telescopic support structure; a support base is provided at the bottom of the lower column.

[0008] In some embodiments of this disclosure, the height adjustment assembly further includes a top adjustment column connected to the upper end of the upper column.

[0009] In some embodiments of this disclosure, the telescopic support structure is a jack.

[0010] In some embodiments of this disclosure, the top surface of the support body is provided with a positioning concave surface, and the bottom surface is provided with a grounding portion; the lower end of the lower column is provided with a spherical surface that contacts and engages with the positioning concave surface.

[0011] In some embodiments of this disclosure, the support body is provided with a guide wall that partially surrounds the lower end of the lower column, and the guide wall is equipped with a set screw for adjusting the verticality of the lower column.

[0012] In some embodiments of this disclosure, the upper column and the lower column are each provided with at least one support column assembly, and the outer end of the support column assembly is provided with a grounding cone tip.

[0013] In some embodiments of this disclosure, the column body of the support column assembly is a telescopic threaded sleeve structure, and the telescopic threaded sleeve structure is equipped with a screwing part.

[0014] In some embodiments of this disclosure, the inner side of the outer shell includes a hinged circular tube, and the inner arc surface of the hinged circular tube is provided with a hinged elongated hole in the transverse direction. The outer side of the support plate mechanism is provided with a raised hinged rod. The rod head portion of the raised hinged rod is perpendicularly connected to the outer side of the support plate mechanism, the raised portion of the raised hinged rod is located inside the hinged circular tube, and the rod body portion of the raised hinged rod cooperates with the hinged elongated hole.

[0015] Compared with existing technologies, the above-mentioned rapid sealing and isolation device for the end of underground coal mine backfilling has the following advantages: The modular support plate mechanism and multiple vertically arranged telescopic modules enhance the contact matching ability of this isolation device with different mine sizes and irregular mine walls, thereby improving the reliability of sealing and isolation. The design is intuitive, easy to assemble, use and disassemble, without any complicated structure, low manufacturing cost and low failure rate; installation and dismantling time is reduced by more than 80% compared with traditional masonry methods, greatly improving the efficiency of filling operations; The telescopic module, combined with the flexible sealing gasket, forms multiple sealing guarantees, effectively preventing the "slurry leakage" phenomenon. This equipment has a high reusability rate. After a single use, it can be put into use again with simple maintenance, saving production costs. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram from the front view perspective of an embodiment of the present utility model. Figure 2 This is a top view of an embodiment of the structure of this utility model, illustrating its usage status. Figure 3 This is a structural schematic diagram from the main view perspective of the telescopic module in the structural embodiment of this utility model; Figure 4 This is a top view of the telescopic module in the structural embodiment of this utility model. Figure 5 This is a structural schematic diagram of the telescopic support structure and support column assembly from the left view perspective in the structural embodiment of this utility model; The following are the labels in the diagram: 1. Support plate mechanism; 11. Support plate structural component; 111. Central vertical plate; 112. Adjustable vertical plate; 2. Height adjustment assembly; 21. Upper column; 22. Lower column; 23. Telescopic support structure; 24. Support base; 241. Guide wall; 25. Top adjusting column; 3. Support column assembly; 4. Telescopic module; 41. Outer shell; 411. Hinged round tube; 42. Telescopic component; 43. Lead screw assembly; 431. Lead screw body; 432. Lead screw nut; 5. Flexible sealing gasket; 6. Mine wall; 7. Anchor cable. Detailed Implementation

[0017] To better understand the purpose, structure, and function of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below. It should be noted that, 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 this application. The terms "comprising" and "equivalent to," and any variations thereof, are open-ended and intended to cover non-exclusive inclusion.

[0018] The component serial numbers used in this document are solely for distinguishing the objects described and have no sequential or technical meaning. The term "connection" in this disclosure, unless otherwise specified, includes both direct and indirect connections. In the description of this application, it should be understood that directional terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "top," and "bottom" indicate directional or positional relationships based on the appendix. Figure 1 The orientation or positional relationship shown is as follows: the orientation term "inner" refers to the side closer to the vertical central axis of the support plate mechanism 1, and "outer" refers to the side relatively far away from the vertical central axis of the support plate mechanism 1. The above orientation terms are only for the convenience of description and are not intended to indicate or imply that the device or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] As shown in the attached diagram. Figures 1 to 5 As shown in the figure, this embodiment discloses a rapid sealing and isolation device for the end of filling in underground coal mine tunnels, including a metal support plate mechanism 1. The outer surface of the support plate mechanism 1 is equipped with a height adjustment component 2 and a support column component 3. The inner surface of the support plate mechanism 1 is located on one side of the filling slurry. After filling is completed, all templates and accessories can be reused. The equipment wear is low and the service life is far longer than that of traditional masonry concrete retaining walls and bagged filling body stacking methods.

[0020] The support plate mechanism 1 includes several vertically arranged and connected support plate structural components 11. In use, an appropriate number of support plate structural components 11 are selected and assembled according to the height of the mine or tunnel being filled. Two adjacent support plate structural components 11 can be assembled and connected by threaded fasteners, so that all the support plate structural components 11 form a plate-like shape that can achieve barrier.

[0021] It should be noted that the threaded fasteners described in this disclosure include at least one of bolted connections, screw connections, washer-external threaded fasteners, or fastener assemblies.

[0022] This embodiment can be further optimized by providing several vertically arranged telescopic modules 4 on each side of the support plate structure 11. There can be one or more telescopic modules 4. If there is one telescopic module 4 on each side of the support plate structure 11, the upper and lower edges of the support plate structure 11 are aligned with the upper edge of the telescopic module 4. If there are multiple vertically arranged telescopic modules 4 on each side of the support plate structure 11, the upper edge of the support plate structure 11 is aligned with the upper edge of the uppermost telescopic module 4, and the lower edge of the support plate structure 11 is aligned with the lower edge of the lowermost telescopic module 4.

[0023] This embodiment can be further optimized in that the support plate structure 11 includes a central vertical plate 111, and adjustable vertical plates 112 are provided on both sides of the central vertical plate 111. In this embodiment, the height of both the central vertical plate 111 and the adjustable vertical plates 112 is 500mm. The central vertical plate 111 and the adjustable vertical plates 112 are detachably connected laterally, and the two adjustable vertical plates 112 that are close together vertically are also connected by threaded fasteners. This design can further facilitate the transportation and storage of the support plate structure 11, and also further increase the dimensional adaptability; the inner side of the outer shell 41 is hinged to the outer side of the adjustable vertical plate 112.

[0024] In this embodiment, the height adjustment component 2 includes an upper column 21 and a lower column 22. The distance between the upper column 21 and the lower column 22 is adjusted by a vertically arranged telescopic support structure 23. A support base 24 is provided at the bottom of the lower column 22. In use, the support base 24 is placed on the surface of the filled mine or tunnel.

[0025] In this embodiment, the upper column 21 and the lower column 22 are a pull-out combined shell structure, and the telescopic support structure 23 is located between the upper column 21 and the lower column 22. When the telescopic support structure 23 is in the extended state, the upper column 21 and the lower column 22 are vertically separated; when the telescopic support structure 23 is in the retracted state, the upper column 21 and the lower column 22 are vertically closer together.

[0026] The telescopic support structure 23 is a jack, which can be a screw jack or a hydraulic jack.

[0027] Of course, as shown in the attached figure, depending on the different widths of the support plate mechanism 1, the height adjustment components 2 can be multiple horizontally arranged.

[0028] The top surface of the support base 24 is provided with a positioning concave surface, and the bottom surface is provided with a grounding part; the lower end of the lower column 22 is provided with a spherical surface that contacts and matches the positioning concave surface. Through the design of the positioning concave surface and the spherical surface, the lower end of the lower column 22 and the support base 24 are in a ball joint state under the action of gravity, which increases the ability of the height adjustment component 2 to adapt to the rugged surface of the filled mine or tunnel.

[0029] The support base 24 is provided with a guide wall 241 that partially surrounds the lower end of the lower column 22. The guide wall 241 is equipped with a set screw for adjusting the verticality of the lower column 22. In this embodiment, the guide wall 241 surrounds the lower column 22 on the left, right and outer sides. Each of these three sides is provided with a threaded hole, and a set screw is installed in the threaded hole. When it is necessary to adjust the verticality of the lower column 22, the set screw is turned so that the inner end of the set screw contacts the outer surface of the lower column 22 to provide thrust. The lower end of the lower column 22 is in the positioning concave surface and cannot achieve lateral displacement. Therefore, this thrust can realize the verticality adjustment of the lower column 22.

[0030] In this embodiment, it can be optimized that each of the upper column 21 and the lower column 22 is equipped with at least one support column assembly 3. In this embodiment, the inner end of the support column assembly 3 is hinged to the upper column 21 or the lower column 22 of the height adjustment assembly 2, and the outer end of the support column assembly 3 is provided with a grounding cone tip. In use, the grounding cone tip is pressed against the surface or top wall of the filled mine or tunnel. Preferably, the support column assemblies 3 are evenly distributed vertically. For example, when there are two support column assemblies 3 vertically, the two support column assemblies 3 are respectively set at the three equal division points of the height adjustment assembly 2.

[0031] The column of the support column assembly 3 is a telescopic threaded sleeve structure. This telescopic threaded sleeve structure is equipped with a screwing part, which can be a regular polygonal prism or a screwing handle, primarily for auxiliary screwing. Compared to a hydraulic tightening structure, the spiral telescopic structure can more effectively avoid pressure leakage caused by impacts and other factors. In use, the extension or retraction is achieved by screwing the outer sleeve of the telescopic threaded sleeve structure. In this embodiment, the thread of the telescopic threaded sleeve structure is a T-type thread.

[0032] What can be improved is that the telescopic threaded sleeve structure is equipped with a mechanical pressure sensor for real-time display of the column tension force.

[0033] The height adjustment component 2 also includes a top adjustment column 25 connected to the upper end of the upper column 21. The height of the top adjustment column 25 is less than the height of the central vertical plate 111, which further increases the height adaptability of the support plate structure 11.

[0034] The telescopic module 4 includes an outer shell 41 and a telescopic component 42. A lead screw assembly 43 is connected between the outer shell 41 and the telescopic component 42. The lead screw assembly 43 includes a laterally arranged lead screw body 431 and a lead screw nut 432. In this embodiment, the lead screw nut 432 is laterally limited and fixed to the outer shell 41. The laterally limiting structure can be a limiting plate or a limiting block, which is used to keep the lead screw nut 432 from generating excessive lateral displacement when it is turned. The lead screw body 431 is laterally connected to the telescopic component 42 through a lead screw bearing. When the lead screw nut 432 is rotated, the lead screw nut 432 is relatively stationary, and the lead screw body 431 obtains thrust to move, thereby driving the telescopic component 42 to extend or retract laterally.

[0035] The outer end face of the telescopic component 42 is a slope, making the outer end of the telescopic component 42 knife-edge shaped. Without adjusting the screw assembly 43, the outer end of the telescopic component 42 is not easy to move after it is compacted and in contact with the inner wall of the mining hole, thus enhancing stability.

[0036] In this embodiment, the lead screw body 431 can be optimized as a T-shaped lead screw, because the T-shaped lead screw has good self-locking properties, so the telescopic component 42 after extension and retraction has strong structural stability.

[0037] The inner side of the outer shell 41 includes a hinged cylindrical tube 411. The inner arc surface of the hinged cylindrical tube 411 has a transverse hinged elongated hole. The outer side of the support plate mechanism 1 has a raised hinged rod. The head of the raised hinged rod is perpendicularly connected to the outer side of the support plate mechanism 1. The head of the raised hinged rod is located inside the hinged cylindrical tube 411, and the body of the raised hinged rod engages with the hinged elongated hole. In this embodiment, the raised hinged rod can be a hexagonal head bolt. Through the structural characteristics of the hinged cylindrical tube 411, the telescopic module 4 can be fixedly overlapped with the support plate structure 11 while simultaneously achieving the effect of the telescopic module 4 hinged to the hinged cylindrical tube 411. The rotation angle range is 90° to 180°, thereby allowing the telescopic module 4 to effectively avoid the original anchor cable 7 of the tunnel wall 6 and be supported on the tunnel wall 6 without obstruction, achieving a better sealing effect.

[0038] It also includes a flexible sealing gasket 5 disposed on the inner surface. The flexible sealing gasket 5 is used to fully isolate the filling grout, and at the same time, it can be easily and quickly demolded after the filling grout has solidified. The flexible sealing gasket 5 can be geotextile or isolation fabric.

[0039] The telescopic module 4, combined with the flexible sealing gasket 5, forms multiple sealing guarantees, effectively preventing the "slurry leakage" phenomenon.

[0040] When using it, the main steps are as follows: First, transport the components to the mine entrance that needs to be sealed, taking into account the height and width dimensions of the mine entrance; Next, locate the center position of the mining tunnel and install the height adjustment component 2 at this position, so that the grounding part of the support body 24 contacts the ground surface. Adjust the extension of the height adjustment component 2 to the upper end to compact the top wall of the mining tunnel and the lower end to compact the ground surface of the mining tunnel through the telescopic support structure 23. The verticality of the lower column 22 is controlled by the jack screw, so as to achieve the technical purpose of the height adjustment component 2 standing stably vertically. Then, the support plate mechanism 1 is assembled. According to the height of the mining opening, an appropriate number of central vertical plates 111 are selected and assembled into a whole by threaded fasteners. When the mining opening is wide, adjusting vertical plates 112 are arranged opposite to each other on both sides of the central vertical plate 111. The telescopic module 4 is assembled on the outside of the adjusting vertical plate 112. The support plate mechanism 1 and the height adjustment component 2 are fixedly connected by threaded fasteners to achieve the purpose of vertical setting of the support plate mechanism 1. Flexible sealing gaskets 5 are laid on the inner surfaces of the support plate mechanism 1 and the telescopic module 4. The flexible sealing gaskets 5 can be fixed to the support plate mechanism 1 and the telescopic module 4 by wire. After fixing, the assembly personnel come to the front of this design.

[0041] After adjusting the telescopic module 4 to a suitable hinge angle, each telescopic component 42 is controlled by each lead screw assembly 43 to extend to the outer end and press tightly against the side wall of the mining opening to achieve fixation; Adjust the support column assembly 3 and tighten the screwing part of the support column assembly 3. Those skilled in the art can use tools such as wrenches or torque wrenches to assist until its outer end grounding cone tip is pressed against the top and / or bottom of the roadway to complete the sealing and isolation operation.

[0042] The demolition work can be completed by reversing the above steps.

[0043] This embodiment enhances the contact matching capability of the isolation device with the walls 6 of different mining tunnel sizes and irregular surfaces through a modularly configured support plate mechanism 1 and multiple vertically arranged telescopic modules 4, thereby improving the reliability of the sealing and isolation. It can quickly seal the ports of underground coal mines, and its strength, efficiency, and stability are far superior to traditional sealing methods such as wooden board sealing and masonry sealing. The structure of this design is intuitive, and it is convenient to assemble, use, and disassemble. There is no cumbersome structure, low manufacturing cost, and low failure rate. The installation and dismantling time is shortened by more than 80% compared with traditional masonry methods, which greatly improves the efficiency of filling operations. This equipment has a high reusability rate. After a single use, it can be put into use again after simple maintenance, saving production costs. Its service life is more than 10 times longer than that of wooden boards.

[0044] It is understood that the above description is only for illustrating specific embodiments of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of disclosure of this application.

Claims

1. A rapid sealing and isolation device for the end of filling in underground coal mine tunnels, characterized in that: The system includes a support plate mechanism (1), the outer surface of which is provided with a height adjustment component (2) and a support column component (3); the support plate mechanism (1) includes several vertically arranged and connected support plate structural components (11), and several vertically arranged telescopic modules (4) are provided on each side of the support plate structural components (11); the telescopic module (4) includes an outer shell (41) and a telescopic component (42), and a lead screw assembly (43) is connected between the outer shell (41) and the telescopic component (42). The lead screw assembly (43) includes a horizontally arranged lead screw body (431) and a lead screw nut (432), and the telescopic component (42) realizes telescopic action through the lead screw assembly (43); it also includes a flexible sealing gasket (5) provided on the inner surface.

2. The rapid sealing and isolation device for the end of underground coal mine tunnel filling as described in claim 1, characterized in that, The support plate structure (11) includes a central vertical plate (111), and two adjustable vertical plates (112) are provided on opposite sides of the central vertical plate (111). The central vertical plate (111) and the adjustable vertical plate (112) are detachably connected. The inner side of the outer shell (41) is hinged to the outer side of the adjustable vertical plate (112).

3. The rapid sealing and isolation device for the end of filling underground coal mine tunnels according to claim 1, characterized in that, The height adjustment component (2) includes an upper column (21) and a lower column (22). The distance between the upper column (21) and the lower column (22) is adjusted by a vertically arranged telescopic support structure (23). The bottom of the lower column (22) is provided with a support seat (24).

4. The rapid sealing and isolation device for the end of filling in underground coal mine tunnels according to claim 3, characterized in that, The height adjustment assembly (2) also includes a top adjustment column (25) connected to the upper end of the upper column (21).

5. The rapid sealing and isolation device for the end of filling in underground coal mine tunnels according to claim 3, characterized in that, The telescopic support structure (23) is a jack.

6. The rapid sealing and isolation device for the end of filling in underground coal mine tunnels according to claim 3, characterized in that, The top surface of the support base (24) is provided with a positioning concave surface, and the bottom surface is provided with a grounding part; the lower end of the lower column (22) is provided with a spherical surface that contacts and matches the positioning concave surface.

7. The rapid sealing and isolation device for the end of filling in underground coal mine tunnels according to claim 6, characterized in that, The support body (24) is provided with a guide wall (241) that partially surrounds the lower end of the lower column (22), and the guide wall (241) is equipped with a top screw to adjust the verticality of the lower column (22).

8. The rapid sealing and isolation device for the end of filling in underground coal mine tunnels according to claim 3, characterized in that, The upper column (21) and the lower column (22) are each equipped with at least one support column assembly (3), and the outer end of the support column assembly (3) is provided with a grounding cone tip.

9. The rapid sealing and isolation device for the end of filling in underground coal mine tunnels according to claim 3 or 8, characterized in that, The column of the support column assembly (3) is a telescopic threaded sleeve structure, and the telescopic threaded sleeve structure is equipped with a screwing part.

10. The rapid sealing and isolation device for the end of filling in underground coal mine tunnels according to claim 1, characterized in that, The inner side of the outer shell (41) includes a hinged cylindrical tube (411), and the inner arc surface of the hinged cylindrical tube (411) is provided with a hinged elongated hole in the transverse direction. The outer side of the support plate mechanism (1) is provided with a head hinge rod. The head part of the head hinge rod is perpendicularly connected to the outer side of the support plate mechanism (1). The head part of the head hinge rod is located inside the hinged cylindrical tube (411), and the body part of the head hinge rod is engaged with the hinged elongated hole.

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