An integrated device for partitioning, isolating and directional filling of a mine goaf

Abstract

The present application relates to the technical fields of mine filling, in particular to a kind of mine goaf partition isolation and directional filling integrated equipment, including center column, one end of center column is communicated with injection tube for infusion paste, the end of injection tube away from center column is communicated with transport equipment for transporting paste;Center column is equipped with frame forming mechanism for keeping paste solidification forming around;Frame forming mechanism includes spacing plate evenly arranged along the length direction of center column, the end of injection tube away from transport equipment is communicated with filling bag loaded with paste, and slit for small and medium-sized particles in paste to pass through is opened on filling bag;Current height corresponding spacing plate is fixedly connected with filling bag between next layer height direction, and pull rope is used to push spacing plate to center for closing based on the weight of filling bag;The present application strengthens the support effect of paste initial solidification process on goaf, improves the geological stability in goaf isolation and filling process.

Description

Technical Field

[0001] This invention relates to the field of mine filling technology, specifically to an integrated device for zoned isolation and directional filling of mine goaf areas. Background Technology

[0002] During mining operations, goaf areas are formed as ore is extracted. If not addressed promptly, the rock strata above the goaf will gradually bend and fracture due to the loss of their original ore support, eventually leading to roof collapse or other accidents. Secondly, the existence of goaf areas disrupts the balance of surface rock strata, causing them to gradually sink under gravity, forming surface subsidence pits. Furthermore, goaf areas may connect with underground aquifers, leading to groundwater inflow into the mine and causing water-related accidents. Therefore, effective treatment of goaf areas is essential.

[0003] In existing technologies, paste filling methods prepare paste (filler) by combining crushed and screened aggregates with subsequent gel materials in a specific ratio, and then fill the goaf for support. This not only effectively isolates the goaf from the surrounding work area, preventing accidents such as rock collapse and roof fall, and providing safety guarantees for subsequent mining operations, but also utilizes solid waste such as mine waste rock and tailings as filling aggregates, reducing waste emissions and stockpiling, and responding to the requirements of green and low-carbon development.

[0004] However, in the actual application of paste filling, because the filling material is prepared by combining crushed and screened materials with subsequent gel materials, the filling material has not fully solidified in the early stage of filling. Due to the complex geological stress in the goaf, the filling material is prone to deformation and cannot provide support, which not only affects the filling effect but may also threaten the safe production of the mine. Therefore, this invention provides an integrated device for goaf zoning isolation and directional filling in mines to enhance the initial support effect of paste, which facilitates the support effect of paste on the goaf during the initial solidification process and improves the geological stability during goaf isolation and filling. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an integrated device for mine goaf isolation and directional filling, which enhances the support effect of the paste during the initial solidification process on the goaf and improves the geological stability during the goaf isolation and filling process.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: an integrated device for zoned isolation and directional filling of goaf in a mine, comprising a central column for supporting the surrounding rock wall of the goaf, an injection pipe for injecting paste at one end of the central column, and a transport device for transporting paste at the other end of the injection pipe away from the central column; a frame forming mechanism for maintaining the solidification and shaping of the paste is provided around the central column.

[0007] The frame forming mechanism includes limiting plates evenly arranged along the length of the central column, with the limiting plates symmetrically arranged around the central column; the end of the injection tube away from the transport equipment is connected to a filling bag containing the paste, and the filling bag has slits for small particles in the paste to pass through.

[0008] A pull rope is fixedly connected between the current height-corresponding limiting plate and the next layer of filling bag in the height direction. The pull rope is used to push the limiting plate towards the center to close based on the weight of the filling bag.

[0009] Furthermore, the diameters of the central column and the limiting plate increase sequentially from top to bottom, and a deformable baffle plate connects adjacent limiting plates along the height direction.

[0010] Furthermore, a connecting rod for adjusting the support length is provided between the central column and the limiting plate.

[0011] Furthermore, an installation rod is fixedly connected to the central column, and injection holes are connected to both the upper and lower sides of the installation rod. The injection holes are connected to the injection tube and the inside of the limiting plate. The filling bag is fixedly connected to the installation rod, and the injection tube is connected to the inside of the filling bag through the injection holes.

[0012] Furthermore, a sliding cavity is opened on the central column, and the sliding cavity is located at the junction between adjacent limiting plates. A sliding block for adjusting the support height of the central column is slidably fitted inside the sliding cavity, and the sliding block is fixedly connected to the connecting rod.

[0013] Furthermore, the bottom of the filling bag abuts against the top of the connecting rod.

[0014] Furthermore, a hydraulic oil pipe is also provided inside the injection tube, and the hydraulic oil pipe is connected to the inside of the sliding cavity.

[0015] Furthermore, the limiting plate includes a first plate and a second plate, with an extension plate provided between the first plate and the second plate. The extension plate is located inside the second plate and slides with the second plate.

[0016] Furthermore, a positioning bolt is used to bolt the extension plate and the second plate together.

[0017] Furthermore, the first plate and the second plate include a housing for providing rigid support and an isolation layer fixedly connected to the filling bag. The isolation layer is located between the housing and the filling bag, and is adhesively connected to the housing. The central column is closed between adjacent limiting plates through the connection of the isolation layer and the shielding plate.

[0018] Furthermore, several spikes are fixedly connected to the surfaces of the shielding plates at both ends of the central column.

[0019] The above approach has the following beneficial effects:

[0020] 1. This scheme utilizes a central column to provide basic support for the goaf, compensating for the insufficient initial support of the paste. Then, the surrounding limiting plates restrict the internal filling bags and paste, allowing the paste to solidify around the central column. This enables the subsequent directional isolation and filling support of the goaf through the segmentation effect of the central column, thereby improving the geological stability during the isolation and filling process of the goaf.

[0021] 2. In this scheme, during the solidification process of the filling bag and the paste around the central column, the support effect of the paste on the goaf is enhanced during the initial solidification process. At the same time, the filling bag pulls the rope to pull and close the limiting plate in the upper height direction. This makes the limiting plate close from the central column to the center, thereby enhancing the tightness of the paste during the initial solidification process and facilitating the solidification of the paste.

[0022] 3. In this solution, the injection tube connects to the transport equipment to facilitate the delivery of the paste into the filling bag according to the actual usage. The filling bag fills the space between the central column and the limiting plate, allowing small particles in the paste inside the filling bag to fill the limiting plate through the gaps, forming a complete support mechanism. At the same time, the filling bag binds and fixes the larger particles of paste inside, forming a basic support block to restrict the flow of subsequent paste delivery, so as to facilitate the initial solidification of the paste. Attached Figure Description

[0023] Figure 1 This is an isometric view of an embodiment of the integrated equipment for mine goaf zoning isolation and directional filling of the present invention;

[0024] Figure 2 This is a bottom view of an embodiment of the integrated mine goaf zoning isolation and directional filling equipment of the present invention;

[0025] Figure 3 for Figure 2 A cross-sectional schematic diagram of the arrangement of the filling bags along the AA direction;

[0026] Figure 4 for Figure 2 A cross-sectional view along the BB direction.

[0027] The reference numerals in the accompanying drawings of the instruction manual include: 1. Central column; 11. Baffle plate; 12. Mounting rod; 13. Sliding block; 2. Injection tube; 21. Injection hole; 22. Hydraulic oil pipe; 3. Limiting plate; 31. First plate; 32. Second plate; 33. Extension plate; 4. Pull rope; 5. Filling bag; 6. Connecting rod. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The following detailed description illustrates the specific implementation method:

[0032] Example 1:

[0033] As attached Figures 1 to 4 As shown: An integrated device for zoned isolation and directional filling of goaf in a mine includes a central column 1 for supporting the rock wall around the goaf. One end of the central column 1 is connected to an injection pipe 2 for injecting paste. The end of the injection pipe 2 away from the central column 1 is connected to a transport device for transporting the paste. The transport device is existing technology and will not be described in detail in this embodiment. A frame forming mechanism is provided around the central column 1 to keep the paste solidified and formed.

[0034] The frame forming mechanism includes limiting plates 3 evenly arranged along the length of the central column 1, symmetrically arranged around the central column 1; the diameters of the central column 1 and the limiting plates 3 increase sequentially from top to bottom, and deformable baffles 11 connect adjacent limiting plates 3 along the height direction. The end of the injection tube 2 furthest from the transport equipment is connected to a filling bag 5 containing the ointment, and the filling bag 5 has slits for small particles in the ointment to pass through.

[0035] A mounting rod 12 is fixedly connected to the central column 1. Injection holes 21 are connected to both the upper and lower sides of the mounting rod 12. The injection holes 21 are connected to the injection tube 2 and the inside of the limiting plate 3. The filling bag 5 is fixedly connected to the mounting rod 12. The injection tube 2 is connected to the inside of the filling bag 5 through the injection holes 21.

[0036] A pull rope 4 is fixedly connected between the current height-corresponding limiting plate 3 and the next layer height-corresponding filling bag 5. The pull rope 4 is used to push the limiting plate 3 towards the center based on the weight of the filling bag 5.

[0037] The specific implementation process is as follows:

[0038] First, a tower-shaped mechanism is formed by increasing the diameter of the central column 1 and the limiting plate 3 from top to bottom. This ensures the stability of the bottom support after the paste solidifies due to gravity. At the same time, the pressure exerted by the paste's own weight on the bottom paste and the filling bag 5 improves the compactness of the bottom paste solidification and ensures the stability of the base formed by the bottom paste. Then, the connecting part of the limiting plate 3 is connected by the shielding plate 11. Based on the deformable characteristics of the shielding plate 11, it adapts to the displacement changes of the limiting plate 3 to ensure the sealing during the paste solidification process.

[0039] The central column 1 provides basic support to the goaf, compensating for the insufficient initial support of the paste. The peripheral limiting plates 3 then restrict the internal filling bags 5 and the paste, allowing the paste to solidify around the central column 1. This enables the central column 1 to divide the goaf, achieving directional isolation and filling support, thus improving the geological stability during the goaf isolation and filling process.

[0040] The position of the filling bag 5 is maintained by the mounting rod 12 so that when the paste is discharged through the injection hole 21 to fill the inside of the filling bag 5, the paste can expand and fill the inside of the filling bag 5. At the same time, the paste is discharged through the injection hole 21 to the space between the filling bag 5 and the limiting plate 3, so as to quickly fill the space between the limiting plate 3 and the central column 1, reduce the paste delivery time, and improve work efficiency.

[0041] During the solidification process of the filling bag 5 and the paste around the central column 1, the support effect of the paste on the goaf is strengthened in the initial solidification process. The filling bag 5 pulls the rope 4 to pull and close the limiting plate 3 in the upper height direction, so that the limiting plate 3 closes from the central column 1 to the center, thereby strengthening the tightness of the paste in the initial solidification process and facilitating the solidification of the paste.

[0042] Meanwhile, the injection tube 2 connects to the transport equipment to deliver the paste into the filling bag 5 according to the actual use. The filling bag 5 fills the space between the central column 1 and the limiting plate 3, allowing small particles in the paste inside the filling bag 5 to fill the limiting plate 3 through the gaps, forming a complete support mechanism. At the same time, the filling bag 5 binds and fixes the large particles of paste inside to form a basic support block, thereby restricting the flow of subsequent paste delivery and facilitating the initial solidification of the paste.

[0043] Example 2:

[0044] The difference from Embodiment 1 is that a connecting rod 6 for adjusting the support length is provided between the central column 1 and the limiting plate 3. The connecting rod 6 includes a first rod and a second rod that slide against each other. The end of the first rod away from the second rod is fixedly connected to the limiting plate 3, and the end of the second rod away from the first rod is fixedly connected to the central column 1.

[0045] The specific implementation process is as follows: the sliding engagement of the connecting rod 6 provides displacement change of the limiting plate 3 between the horizontal planes, which facilitates the adjustment of the distance between adjacent limiting plates 3 according to the changes in the actual paste injection and filling process, and maintains the limitation of the limiting plate 3 on the initial solidification process of the paste.

[0046] Example 3:

[0047] The difference from Embodiment 2 is that a sliding cavity is opened on the central column 1, the sliding cavity is located at the junction between adjacent limiting plates 3, and a sliding block 13 for adjusting the support height of the central column 1 is slidably fitted in the sliding cavity. The sliding block 13 is fixedly connected to the connecting rod 6; and the bottom of the filling bag 5 abuts against the top of the connecting rod 6.

[0048] The specific implementation process is as follows: As the paste inside the filling bag 5 continues to fill, the pressure exerted by the filling bag 5 on the connecting rod 6 gradually increases, causing the sliding block 13 to move inside the sliding cavity. Since the filling bag 5 is fixedly connected to the mounting rod 12, during the continuous filling and squeezing of the paste inside the filling bag 5, it is restricted by the surrounding limiting plate 3 and the mounting rod 12. As the paste continues to be transported and pushes the filling bag 5 to move, it continuously applies pressure to the upper and lower sides. Based on the weight of the paste, most of the weight of the filling bag 5 is applied to the connecting rod 6, which increases the distance between the connecting rod 6 and the central column 1. This allows the two ends of the central column 1 to provide stable support for the inside of the goaf, providing a support space for the subsequent solidification of the paste, and realizing the division and filling of the goaf after the paste solidifies.

[0049] In another embodiment, the injection tube 2 is also provided with a hydraulic oil pipe 22, which is connected to the inside of the sliding cavity.

[0050] Hydraulic oil is injected into the sliding cavity through hydraulic oil pipe 22, which pushes the sliding block 13 to move. The sliding block 13 drives the connecting rod 6 to move downward. During the filling process of the paste, since the bottom of the filling bag 5 is the ground or the lower layer of filling bag 5, the connecting rod 6 is supported by the limiting plate 3 to keep the position of the connecting pipe stationary. The central column 1 is lifted in the reverse direction by continuous hydraulic oil injection, so that the two ends of the central column 1 are firmly abutted against the interior of the goaf, providing diffusion space for subsequent paste delivery, which facilitates the paste to fill the interior of the filling bag 5. After the paste solidifies, it forms a pillar in the goaf and isolates the goaf.

[0051] Example 4:

[0052] The difference from Embodiment 3 is that the limiting plate 3 includes a first plate 31 and a second plate 32, and an extension plate 33 is provided between the first plate 31 and the second plate 32. The extension plate 33 is located inside the second plate 32, and the extension plate 33 slides with the second plate 32.

[0053] The specific implementation process is as follows: the first plate 31 and the second plate 32 form a circular support space to provide support for the solidification of the paste, so that the paste can adhere to the central column 1; while the extension plate 33 slides on the surface of the second plate 32 to provide deformation space for the expansion and adjustment of the first plate 31 and the second plate 32, so as to adapt to the stress deformation during the continuous filling process of the paste.

[0054] A positioning bolt is bolted between the extension plate 33 and the second plate 32. The positioning bolt is used to fix the extension plate 33 and the second plate 32 to maintain stable support between the extension plate 33 and the second plate 32, so that the first plate 31 and the second plate 32 can be disassembled and recycled after the paste has solidified.

[0055] In another embodiment, the first plate 31 and the second plate 32 include a housing for providing rigid support and an isolation layer fixedly connected to the filling bag 5. The isolation layer is located between the housing and the filling bag 5 and is adhesively connected to the housing. The central column 1 is closed between adjacent limiting plates 3 through the connection of the isolation layer and the shielding plate 11.

[0056] The limiting plate 3 is formed by the shell and the isolation layer, so that after the paste is completely solidified, the rigid support shell can be disassembled and recycled. The isolation layer, the solidified paste and the central column 1 maintain support for the goaf. The rigid support shell is often a standard frame made of steel, and the isolation layer is often a plastic product. The shell is recycled to improve the utilization rate of resources.

[0057] Example 5:

[0058] The difference from Embodiment 4 is that the surfaces of the baffles 11 at both ends of the central column 1 are fixedly connected with several spikes.

[0059] The specific implementation process is as follows: When the central column 1 is placed inside the goaf, gas is injected through the hydraulic oil pipe 22 to make the central column 1 expand and move to both ends. During this process, the spikes at both ends of the central column 1 come into contact with the rock wall around the goaf, so that the spikes can penetrate the rock wall and remain fixed, thereby improving the stability of the central column 1 during the contact process with the rock wall around the goaf.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An integrated device for zoned isolation and directional filling of goaf areas in mines, comprising a central column (1) for supporting the surrounding rock walls of the goaf area, one end of the central column (1) being connected to an injection pipe (2) for injecting paste, and the other end of the injection pipe (2) away from the central column (1) being connected to a transport device for transporting the paste; characterized in that, The central column (1) is surrounded by a frame forming mechanism for maintaining the solidification and shaping of the paste; The frame forming mechanism includes a limiting plate (3) evenly arranged along the length of the central column (1), the limiting plate (3) being symmetrically arranged with the central column (1) as the center; the end of the injection tube (2) away from the transport equipment is connected to a filling bag (5) containing the paste, and the filling bag (5) has a slit for small particles in the paste to pass through. A pull rope (4) is fixedly connected between the current height corresponding limit plate (3) and the next layer height corresponding filling bag (5). The pull rope (4) is used to push the limit plate (3) to close towards the center based on the weight of the filling bag (5).

2. The integrated equipment for zoned isolation and directional filling of mined-out areas according to claim 1, characterized in that, The diameters of the central column (1) and the limiting plate (3) increase sequentially from top to bottom, and a deformable baffle plate (11) connects adjacent limiting plates (3) along the height direction.

3. The integrated equipment for zoned isolation and directional filling of mine goaf areas according to claim 2, characterized in that, A connecting rod (6) for adjusting the support length is provided between the central column (1) and the limiting plate (3).

4. The integrated equipment for zoned isolation and directional filling of mine goaf areas according to claim 3, characterized in that, An installation rod (12) is fixedly connected to the central column (1). Both the upper and lower sides of the installation rod (12) are connected to injection holes (21). The injection holes (21) are connected to the injection tube (2) and the inside of the limiting plate (3). The filling bag (5) is fixedly connected to the installation rod (12). The injection tube (2) is connected to the inside of the filling bag (5) through the injection hole (21).

5. The integrated equipment for zoned isolation and directional filling of mined-out areas according to claim 4, characterized in that, A sliding cavity is opened on the central column (1). The sliding cavity is located at the junction between adjacent limiting plates (3). A sliding block (13) for adjusting the support height of the central column (1) is slidably fitted in the sliding cavity. The sliding block (13) is fixedly connected to the connecting rod (6). The bottom of the filling bag (5) abuts against the top of the connecting rod (6).

6. The integrated equipment for zoned isolation and directional filling of mine goaf areas according to claim 5, characterized in that, The injection tube (2) is also equipped with a hydraulic oil pipe (22), which is connected to the inside of the sliding cavity.

7. The integrated equipment for zoned isolation and directional filling of mined-out areas according to claim 6, characterized in that, The limiting plate (3) includes a first plate (31) and a second plate (32). An extension plate (33) is provided between the first plate (31) and the second plate (32). The extension plate (33) is located inside the second plate (32), and the extension plate (33) slides with the second plate (32).

8. The integrated equipment for zoned isolation and directional filling of mine goaf areas according to claim 7, characterized in that, A positioning bolt is bolted between the extension plate (33) and the second plate (32).

9. The integrated equipment for zoned isolation and directional filling of mine goaf areas according to claim 8, characterized in that, The first plate (31) and the second plate (32) include a housing for providing rigid support and an isolation layer fixedly connected to the filling bag (5). The isolation layer is located between the housing and the filling bag (5), and the isolation layer is adhered to the housing. The central column (1) is closed between adjacent limiting plates (3) through the connection of the isolation layer and the shielding plate (11).

10. The integrated equipment for zoned isolation and directional filling of mine goaf areas according to claim 9, characterized in that, Several spikes are fixedly connected to the surfaces of the shielding plates (11) at both ends of the central column (1).

Images