Coal mine paste filling mining isolation device

Abstract

The present application relates to the technical field of coal mine paste filling equipment, and provides a coal mine paste filling and mining isolation device, comprising: two supports respectively arranged on both sides of the paste filling area; a first carrier frame rotatably arranged on one support; a second carrier frame rotatably arranged on the other support; an isolation unit, one end of the isolation unit is rotatably connected to the first carrier frame, and the other end of the isolation unit is rotatably connected to the second carrier frame; a plurality of sealing devices spaced apart and slidably connected to the isolation unit, the sealing devices being used for top pressing and isolating the positions to be reinforced in the paste filling area; the sealing device comprises a grouting assembly for spraying reinforcing slurry onto the surface of the position to be reinforced. For the coal mine paste filling and mining isolation device provided by the present application, the isolation unit can be adaptively installed, and a plurality of sealing devices can be sequentially distributed at the positions of the points to be reinforced in the filling area, thereby further improving the sealing reliability of the isolation unit.

Description

Technical Field

[0001] This application relates to the technical field of coal mine paste filling equipment, and more specifically, to a coal mine paste filling and mining isolation device. Background Art

[0002] At present, paste filling mining is an important branch of coal mine green mining technology. By mixing solid waste such as coal gangue and fly ash with cementitious materials to form paste slurry and filling it into the goaf, goals such as reducing surface subsidence, controlling mine pressure, and resource utilization of waste are achieved. During the process of coal mine paste filling and mining, the isolation device is a key equipment to ensure the effective sealing of paste materials, prevent leakage, and maintain the stability of roadway structures.

[0003] In related technologies, traditional isolation devices mostly adopt fixed steel structures or simple adjustable brackets. However, due to the complex geological conditions of roadways, they cannot adapt to the irregular shapes of the side walls of the goaf, and problems such as slurry leakage or uneven filling are likely to occur. Moreover, ordinary baffle structures are difficult to cope with the dynamic pressure of paste materials and are prone to gap leakage, affecting the filling effect. Summary of the Invention

[0004] In order to solve the technical problems that the above traditional isolation device cannot adapt to the irregular shapes of the side walls of the goaf, is prone to gap leakage, and affects the filling effect, this application proposes a coal mine paste filling and mining isolation device.

[0005] In view of this, this application proposes a coal mine paste filling and mining isolation device, including: two supports, which are respectively arranged on both sides of the paste filling area; a first carrier frame rotatably arranged on one support; a second carrier frame rotatably arranged on the other support; an isolation unit, one end of the isolation unit is rotatably connected to the first carrier frame, and the other end of the isolation unit is rotatably connected to the second carrier frame; a plurality of sealing devices, spaced apart and slidably connected to the isolation unit, and the sealing devices are used to press and isolate the position to be reinforced in the paste filling area; the sealing device includes a grouting assembly, and the grouting assembly is used to spray reinforcing slurry on the surface of the position to be reinforced.

[0006] In some realizable ways, the support includes: a base plate frame; a vertical frame arranged on one side of the base plate frame; a reinforcing frame obliquely connected between the base plate frame and the vertical frame.

[0007] In some realizable ways, the coal mine paste filling and mining isolation device further includes: a first slewing bearing, the fixed end of the first slewing bearing is connected to the vertical frame, and the rotating end of the first slewing bearing is connected to the first carrier frame; a second slewing bearing, the fixed end of the second slewing bearing is connected to the vertical frame, and the rotating end of the second slewing bearing is connected to the second carrier frame.

[0008] In some realizable ways, the isolation unit includes: a first side plate seat rotatably arranged on the first carrier frame; a second side plate seat rotatably arranged on the second carrier frame; and a frame beam, with both ends of the frame beam connected to the first side plate seat and the second side plate seat respectively.

[0009] In some realizable ways, the sealing device further includes: a plate frame; two connecting frames arranged at both ends of the plate frame and on the same side of the plate frame; a guide rod, with both ends of the guide rod connected to the two connecting frames respectively; a friction kit sleeved on the guide rod and slidably connected to the guide rod, and the grouting assembly is connected to the friction kit.

[0010] In some realizable ways, the grouting assembly includes: a main body frame connected to the friction kit, with a shaft rod connected to the main body frame, and a positioning plate connected to the other end of the shaft rod; a connecting disk slidably sleeved on the shaft rod, with a plurality of dampers circumferentially distributed on the connecting disk, and the other ends of the plurality of dampers are connected to the positioning plate; a fixed disk arranged at an interval from the connecting disk, with the fixed disk and the connecting disk connected by support columns, and the positioning plate and the dampers are located between the fixed disk and the connecting disk; and a grouting disk arranged on the side of the fixed disk away from the connecting disk.

[0011] In some realizable ways, the sealing device further includes: an oil cylinder arranged on one side of the main body frame, with a shaft plug slidably connected in the oil cylinder, and the shaft plug is connected to the shaft rod; at least two oil pipes are connected to the outside of the oil cylinder, and one of the oil pipes is a pulse pipe for pulse - type oil supply.

[0012] In some realizable ways, the sealing device further includes: a pipe sleeve sleeved on the shaft rod, and the shaft rod slidably passes through the pipe sleeve; a guide pin is fixed on the side wall of the shaft rod, and a guide groove is formed on the inner wall of the pipe sleeve, and the guide pin is slidably connected to the guide groove.

[0013] In some realizable ways, the guide grooves are configured in multiple groups, and the multiple groups of guide grooves are circumferentially spaced along the inner wall of the pipe sleeve, and the specifications of each group of guide grooves are different; a transition groove is formed on the inner wall of the pipe sleeve, and the transition groove is arranged adjacent to the starting end of the guide groove and communicates with the inlet ends of all the guide grooves; wherein, the transition groove is configured as an annular guiding channel capable of accommodating the circumferential rotation of the guide pin so that the guide pin can switch paths between different guide grooves.

[0014] In some realizable ways, along the axial direction of the shaft rod, the guide groove includes: an introduction section, a damping adjustment section, and an enhancement section connected in sequence; wherein, the introduction section is a linear structure, and the damping adjustment section and the enhancement section are arc - shaped structures or corrugated structures.

[0015] Compared with the prior art, the present application has the following technical effects:

[0016] The coal mine paste filling mining isolation device provided by this application can adaptively install the isolation unit based on the geological conditions and deformation characteristics of the coal mine surrounding rock in the coal mine paste filling area. Multiple sealing devices can be sequentially distributed at the positions of the points to be reinforced in the filling area, thereby further improving the sealing reliability of the isolation unit. Each sealing device can combine the elastic stretching effect of the damper with the spinning pressing effect of the grouting disc, on the one hand, strengthening the top pressure isolation effect on the surrounding rock of the coal mine filling area, and on the other hand, improving the isolation tightness through the grouting reinforcement effect of the grouting disc.

[0017] The additional aspects and advantages of this application will become obvious in the following description part, or be learned through the practice of this application. Brief Description of the Drawings

[0018] The above and / or additional aspects and advantages of this application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 A schematic structural diagram of the coal mine paste filling mining isolation device in an embodiment of this application is shown;

[0020] Figure 2 A schematic structural diagram of the isolation unit in an embodiment of this application is shown;

[0021] Figure 3 A schematic structural diagram of the sealing device in an embodiment of this application is shown;

[0022] Figure 4 A schematic structural diagram of the guide groove in an embodiment of this application is shown;

[0023] Figure 5 A schematic installation structural diagram of the double-acting hydraulic cylinder in an embodiment of this application is shown.

[0024] Wherein, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names in the drawings is as follows:

[0025] 100 isolation device, 110 support, 112 base plate frame, 114 vertical frame, 116 reinforcement frame, 120 first carrier frame, 122 second carrier frame, 124 double-acting hydraulic cylinder, 130 isolation unit, 132 first side plate seat, 134 second side plate seat, 136 frame beam, 140 sealing device, 142 plate frame, 143 connecting frame, 145 guide rod, 146 friction kit, 150 grouting assembly, 152 main body frame, 153 shaft rod, 154 positioning plate, 155 connecting disc, 156 damper, 157 fixed disc, 158 grouting disc, 160 oil cylinder, 162 oil pipe, 170 pipe sleeve, 180 guide groove, 182 transition groove. Detailed Description of the Embodiments

[0026] To more clearly understand the above objects, features, and advantages of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0027] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0028] The following refers to Figures 1 to 5 Describe a coal mine paste filling mining isolation device 100 according to some embodiments of the present application.

[0029] As Figure 1 、 Figure 2 、 Figure 3 And Figure 5 As shown, the present application provides a coal mine paste filling mining isolation device 100, including: two supports 110, which are respectively arranged on both sides of the paste filling area; a first carrier frame 120, rotatably arranged on one support 110; a second carrier frame 122, rotatably arranged on the other support 110; an isolation unit 130, one end of the isolation unit 130 is rotatably connected to the first carrier frame 120, and the other end of the isolation unit 130 is rotatably connected to the second carrier frame 122; a plurality of sealing devices 140, arranged at intervals on the isolation unit 130 and slidably connected to the isolation unit 130, and the sealing devices 140 are used to press and isolate the position to be reinforced in the paste filling area; the sealing device 140 includes a grouting assembly 150, and the grouting assembly 150 is used to spray a reinforcing slurry on the surface of the position to be reinforced.

[0030] The coal mine paste filling mining isolation device 100 provided by the present application includes two supports 110, a first carrier frame 120, a second carrier frame 122, an isolation unit 130, and a plurality of sealing devices 140. The two supports 110 are symmetrically arranged on both sides of the paste filling area to support the entire isolation device 100. Carrier frames are provided on both supports 110, namely the first carrier frame 120 and the second carrier frame 122 respectively, and the carrier frames can rotate relative to the corresponding supports 110. Specifically, double-acting hydraulic cylinders 124 are symmetrically arranged below the first carrier frame 120 and the second carrier frame 122. The two cylinder bodies of the double-acting hydraulic cylinders 124 are connected in parallel through a synchronous hydraulic circuit, and the end parts of their piston rods are respectively hinged to the bottom of the carrier frames, so that the carrier frames can rotate relative to the supports 110.

[0031] The isolation unit 130 is connected between two carrier frames (i.e., the first carrier frame 120 and the second carrier frame 122), and the positioning angles of the first carrier frame 120 and the second carrier frame 122 are adjusted by the synchronous telescopic control of the double-acting hydraulic cylinder 124, so that the first carrier frame 120 and the second carrier frame 122 can match the surrounding rock deformation in real time, thereby ensuring the dynamic fitting of the isolation unit 130 with the surrounding rock, enabling the entire isolation device 100 to flexibly adapt to paste filling areas of different shapes, sizes, and orientations, and enhancing the versatility and adaptability of the isolation device 100.

[0032] By arranging a plurality of slidably connected sealing devices 140 at intervals on the isolation unit 130, and the sealing devices 140 are detachably connected to the isolation unit 130, it is possible to accurately position and top-pressure isolate the position to be reinforced in the paste filling area, ensure the pertinence and effectiveness of the reinforcement operation, avoid waste of resources, and improve the reinforcement effect at the same time.

[0033] The sealing device 140 includes a grouting assembly 150, and the grouting assembly 150 can rotate to adjust the grouting position. The function of spraying the reinforcement slurry on the surface of the position to be reinforced while isolating is realized, which simplifies the operation process, improves the work efficiency, and can ensure that the reinforcement slurry uniformly and accurately covers the surface of the position to be reinforced, further enhancing the reinforcement effect and the stability of the filling body.

[0034] For the coal mine paste filling mining isolation device 100 provided by the present application, the isolation unit 130 can be adaptively installed based on the geological conditions and deformation characteristics of the coal mine surrounding rock in the coal mine paste filling area. A plurality of sealing devices 140 can be sequentially distributed at the positions of the points to be reinforced in the filling area, thereby further improving the sealing reliability of the isolation unit 130.

[0035] As Figure 2 shown, in some embodiments provided by the present application, the support 110 includes: a base plate frame 112; a vertical frame 114 disposed on one side of the base plate frame 112; and a reinforcing frame 116 obliquely connected between the base plate frame 112 and the vertical frame 114.

[0036] In this embodiment, the support 110 includes a base plate frame 112, a vertical frame 114, and a reinforcing frame 116. The base plate frame 112 is made of high-strength alloy steel plates and is anchored to the roadway floor through embedded bolts. The base plate frame 112, the vertical frame 114, and the reinforcing frame 116 cooperate with each other to form a stable triangular support structure. Compared with the support 110 with a single structure, the overall support stiffness and stability are significantly improved, providing a solid and reliable bearing foundation for the coal mine paste filling mining isolation device 100, and being able to effectively resist external force interference in multiple directions such as paste pressure and equipment vibration during the filling operation.

[0037] The substrate frame 112 is anchored to the tunnel floor, which can disperse the load transmitted by its upper structure, prevent the support 110 from slipping or overturning in a complex working environment, provide a stable space for the precise operation of each component of the isolation device 100, and ensure that the filling and mining operations are safely carried out according to the established process.

[0038] In some embodiments provided in the present application, the coal paste filling mining isolation device 100 also includes: a first swivel support, the fixed end of the first swivel support is connected to the vertical frame 114, and the rotating end of the first swivel support is connected to the first carrier frame 120; a second swivel support, the fixed end of the second swivel support is connected to the vertical frame 114, and the rotating end of the second swivel support is connected to the second carrier frame 122.

[0039] In this embodiment, the coal mine paste filling and mining isolation device 100 also includes a first swivel support and a second swivel support. The first swivel support and the second swivel support respectively realize the rotation connection between the first carrier frame 120, the second carrier frame 122 and the vertical frame 114, and the carrier frame can be flexibly rotated at multiple angles around the rotation axis of the swivel support. During the coal mine paste filling and mining process, the angles of the first carrier frame 120 and the second carrier frame 122 can be accurately adjusted according to the direction, shape and actual operation requirements of different filling areas, thereby driving the isolation unit 130 to rotate, so that the isolation device 100 fits tightly with the filling area, realizing efficient and accurate isolation operations, and avoiding problems such as paste leakage or uneven filling due to inadequate isolation.

[0040] During the filling operation, if there are emergencies such as changes in geological conditions or adjustments to the filling speed, the operator can dynamically adjust the positions of the first carrier frame 120 and the second carrier frame 122 in real time by controlling the rotation of the slewing support, thereby changing the posture and range of action of the isolation unit 130, quickly adapting to changes in operating parameters, and improving operational flexibility and the ability to cope with complex working conditions.

[0041] like Figure 1 As shown, in some embodiments provided in the present application, the isolation unit 130 includes: a first side panel seat 132, which can be rotatably set on the first carrier frame 120; a second side panel seat 134, which can be rotatably set on the second carrier frame 122; and a frame beam 136, wherein both ends of the frame beam 136 are respectively connected to the first side panel seat 132 and the second side panel seat 134.

[0042] In this embodiment, the isolation unit 130 includes a first side plate seat 132, a second side plate seat 134, and a frame beam 136. The first side plate seat 132 is rotatably connected to the first carrier frame 120, and the second side plate seat 134 is rotatably connected to the second carrier frame 122, enabling the entire isolation unit 130 to rotate flexibly. When facing the situation of irregular shape and complex and changeable boundaries in the coal mine paste filling area, the angles of the first side plate seat 132 and the second side plate seat 134 can be flexibly adjusted according to the actual contour of the filling area, thereby driving the frame beam 136 to adapt to different morphologies, ensuring that the isolation unit 130 fits closely with the filling area, effectively blocking the leakage of paste, and improving the filling effect and resource utilization rate.

[0043] During the filling operation, if the filling area undergoes dynamic adjustment due to geological condition changes or construction requirements, the isolation unit 130 can quickly respond through the rotation of the first side plate seat 132 and the second side plate seat 134, and change its own shape and isolation range in real time, without the need for large-scale disassembly and reinstallation of the entire device, shortening the adjustment time, improving the operation efficiency, and adapting to the rapidly changing working conditions requirements in coal mine mining.

[0044] As Figure 3 shown, in some embodiments provided by the present application, the sealing device 140 further includes: a plate frame 142; two connecting frames 143, arranged at both ends of the plate frame 142 and on the same side of the plate frame 142; a guide rod 145, with both ends of the guide rod 145 connected to the two connecting frames 143 respectively; a friction sleeve 146, sleeved on the guide rod 145 and slidably connected to the guide rod 145, and the grouting assembly 150 is connected to the friction sleeve 146.

[0045] In this embodiment, the sealing device 140 includes a plate frame 142, two connecting frames 143, a guide rod 145, and a friction sleeve 146. Two connecting frames 143 distributed vertically are horizontally fixed on one side of the plate frame 142. Two guide rods 145 are vertically arranged between the two connecting frames 143, and two friction sleeves 146 are slidably arranged on the guide rods 145.

[0046] The stable structure formed by the plate frame 142, the guide rod 145, and the connecting frame 143 can evenly transfer the acting force to the surface to be reinforced during the jacking process, avoiding the problems of damage to the filling body structure caused by excessive local pressure or ineffective isolation due to too small pressure, and ensuring the overall balanced force of the filling area.

[0047] The friction sleeve 146 is sleeved on the guide rod 145 and slidably connected to the guide rod 145. The grouting assembly 150 is connected to the friction sleeve 146. The grouting assembly 150 performs position fine-tuning through the sliding connection between the friction sleeve 146 and the guide rod 145, so that the grouting plate 158 on one side thereof can be correspondingly distributed at the positions of relevant reinforcement points for reinforcement treatment of the reinforcement points.

[0048] AsFigure 3 As shown, in some embodiments provided by the present application, the grouting assembly 150 includes: a main frame 152, connected to the friction kit 146, a shaft rod 153 is connected to the main frame 152, and the other end of the shaft rod 153 is connected to a positioning plate 154; a connection disk 155, slidably sleeved on the shaft rod 153, a plurality of dampers 156 are circumferentially distributed on the connection disk 155, and the other ends of the plurality of dampers 156 are connected to the positioning plate 154; a fixed disk 157, arranged at an interval from the connection disk 155, the fixed disk 157 and the connection disk 155 are connected by support columns, and the positioning plate 154 and the dampers 156 are located between the fixed disk 157 and the connection disk 155; a grouting disk 158, arranged on the side of the fixed disk 157 away from the connection disk 155.

[0049] In this embodiment, the grouting assembly 150 includes a main frame 152, a connection disk 155, a fixed disk 157 and a grouting disk 158. The main frame 152 is connected to the friction kit 146, and the position is finely adjusted through the sliding connection between the friction kit 146 and the guide rod 145, so that the grouting disk 158 on one side thereof can be correspondingly distributed at the positions of relevant reinforcement points, enabling the grouting disk 158 to accurately align with the grouting position and ensuring the grouting quality.

[0050] One end of the shaft rod 153 is connected to the main frame 152, and the other end is connected to the positioning plate 154. The connection disk 155 is slidably sleeved on the shaft rod 153 and is spaced from the fixed disk 157 by support columns, forming a stable frame-like structure. The positioning plate 154 and the dampers 156 are located between the fixed disk 157 and the connection disk 155, further restricting the relative displacement of each component in space, limiting the grouting assembly 150 from multiple directions, and avoiding situations such as deviation and inclination during the grouting process, improving the accuracy and stability of the grouting operation.

[0051] A plurality of dampers 156 are circumferentially distributed on the connection disk 155, and the other ends of the dampers 156 are connected to the positioning plate 154. The plurality of dampers 156 are circumferentially distributed, and the connection disk 155 is slidably sleeved on the shaft rod 153. When the shaft rod 153 slides and advances towards the surrounding rock side, the grouting disk 158 abuts against the surface of the coal mine surrounding rock. At this time, the dampers 156 are gradually stretched, and the pressure between the grouting disk 158 and the coal mine surrounding rock increases, realizing the isolation and confining pressure on the coal mine surrounding rock, and then surface grouting reinforcement is carried out, achieving the long-term isolation and sealing effect of the coal mine surrounding rock.

[0052] As Figure 3 shown, in some embodiments provided by the present application, the packer device 140 further includes: an oil cylinder 160, arranged on one side of the main frame 152, a shaft plug is slidably connected in the oil cylinder 160, and the shaft plug is connected to the shaft rod 153; at least two oil pipes 162 are connected to the outside of the oil cylinder 160, and one of the oil pipes 162 is a pulse pipe, and the pulse pipe is used for pulsed oil supply.

[0053] In this embodiment, the packer device 140 further includes an oil cylinder 160. The oil cylinder 160 is disposed on one side of the main frame 152. The piston slides within the oil cylinder 160 and is connected to the shaft rod 153. Oil is supplied to the oil cylinder 160 through an oil pipe 162 to drive the piston to move, thereby pushing the shaft rod 153 to accurately displace towards the surrounding rock side. This driving method can precisely control the moving distance and speed of the shaft rod 153, enabling the packer device 140 to accurately deliver the grouting assembly 150, etc. to the predetermined packing position according to the actual situation of the surrounding rock and the packing requirements, avoiding packing failure caused by position deviation, and improving the accuracy and reliability of the packing operation.

[0054] At least two of the oil pipes 162 include a pulse pipe, which is used to achieve pulsed oil supply, and the other oil pipes 162 among the at least two oil pipes 162 are conventional oil pipes 162. The intermittent high-pressure oil flow generated by the pulsed oil supply acts on the piston, causing the movement of the piston to push the shaft rod 153 to exhibit a pulsed characteristic. The oil cylinder 160 drives the piston through the pulse pipe to push the shaft rod 153 towards the surrounding rock side. The pulsed oil supply can control the propulsion speed (0.5 cm / s - 2 cm / s) to avoid impact damage. When the pulse pipe on the oil cylinder 160 operates at a low frequency, it can be used for the flexible fitting of the initial grouting plate 158 and the surrounding rock, and when the pulse pipe operates at a high frequency, it can further enhance the extrusion and isolation effect on the coal mine surrounding rock, enabling a grouting area to be quickly formed on the surface of the surrounding rock.

[0055] The oil cylinder 160 continuously supplies oil through the oil pipe 162 to drive the piston, providing a stable propulsion force for the shaft rod 153 to ensure that the packer device 140 forms a continuous and stable pressure on the surrounding rock side. This continuous pressure can make the grouting plate 158 closely fit the surface of the surrounding rock, reduce gaps and leakage channels, improve the sealing performance of the packing, effectively prevent unnecessary flow of slurry or other fluids inside and outside the packing area, and ensure the quality of the packing operation.

[0056] As Figure 3 shown, in some embodiments provided by the present application, the packer device 140 further includes: a pipe sleeve 170 sleeved on the shaft rod 153, and the shaft rod 153 slidably penetrates through the pipe sleeve 170; a guide pin is fixed on the side wall of the shaft rod 153, and a guide groove 180 is formed on the inner wall of the pipe sleeve 170, and the guide pin is slidably connected to the guide groove 180.

[0057] In this embodiment, the sealing device 140 further includes a sleeve 170. The shaft 153 is slidably inserted into the sleeve 170. A guide pin is fixed on the side wall of the shaft 153, and a guide groove 180 is formed on the inner wall of the sleeve 170. The guide pin is slidably connected to the guide groove 180. When the guide groove 180 is arranged in an arc structure or a corrugated structure, when the shaft 153 slides axially along the sleeve 170, corresponding torsion can be performed through the sliding connection between the guide pin and the guide groove 180, so that the connection disk 155 on the shaft 153 rotates synchronously, so that the grouting disk 158 can fully spin-press the coal mine surrounding rock in the filling area. Especially in the stage of coal mine paste filling, when the paste is filled under high pressure, the coal mine surrounding rock may protrude outward.

[0058] As Figure 4 shown, in some embodiments provided by the present application, multiple groups of guide grooves 180 are configured. The multiple groups of guide grooves 180 are circumferentially spaced along the inner wall of the sleeve 170, and the specifications of each group of guide grooves 180 are different; a transition groove 182 is formed on the inner wall of the sleeve 170. The transition groove 182 is arranged adjacent to the starting end of the guide groove 180 and communicates with the inlet ends of all the guide grooves 180; wherein, the transition groove 182 is configured as an annular guiding channel capable of accommodating the circumferential rotation of the guide pin, so that the guide pin can switch paths between different guide grooves 180.

[0059] In this embodiment, the multiple groups of guide grooves 180 with different specifications are circumferentially spaced along the inner wall of the sleeve 170, which can provide multiple movement path options for the shaft 153. When facing different surrounding rock characteristics, sealing depths or direction requirements, other guide grooves 180 with different specifications can be switched, so that the shaft 153 moves at different speeds, forces or trajectories, flexibly adapting to complex and changeable sealing operation scenarios and improving the versatility of the device.

[0060] The transition groove 182 arranged adjacent to the starting end of the guide groove 180 serves as an annular guiding channel, enabling the guide pin to smoothly and quickly switch paths between different guide grooves 180. Without complex operations or additional components, the movement direction and mode of the shaft 153 can be changed, saving switching time, improving the efficiency of the sealing operation, and reducing downtime waiting.

[0061] As Figure 4 shown, in some embodiments provided by the present application, along the axial direction of the shaft 153, the guide groove 180 includes: an introduction section, a damping adjustment section and an enhancement section connected in sequence; wherein, the introduction section is a linear structure, and the damping adjustment section and the enhancement section are arc structures or corrugated structures.

[0062] In this embodiment, the introduction section is linear, which can quickly guide the shaft rod 153 into a predetermined motion trajectory, enabling the packer operation to be quickly and accurately started, improving the overall efficiency. The damping adjustment section and the strengthening section are arc-shaped structures or corrugated structures, which can enable the grouting disc 158 to twist at different angles or reset after twisting during the sliding and advancing process along with the shaft rod 153. On the one hand, it can construct grouting spaces of different shapes on the surrounding rock surface to ensure long-term isolation and sealing after grouting; on the other hand, after the grouting isolation is completed, when the paste is filled in the coal mine, the spinning action of the grouting disc 158 can cooperate with the elastic stretching of the damper 156 to further enhance the top pressure isolation effect on the reinforced area and avoid isolation failure during high-pressure paste filling.

[0063] In a specific embodiment, the present application provides a coal mine paste filling and mining isolation device 100, including a support 110. The support 110 includes two base plate frames 112 horizontally fixed on the bottom surface of the roadway, and the base plate frames 112 are symmetrically arranged on both sides of the paste filling area. Vertical frames 114 are vertically welded and fixed on the base plate frames 112, and a combined L-shaped support structure is formed between the vertical frames 114 and the base plate frames 112. A reinforcing frame 116 is inclined between the base plate frame 112 and the vertical frame 114 at an inclination angle between 45° and 60° to form a triangular stable structure. Among them, the base plate frame 112 is made of high-strength alloy steel plate and is anchored to the roadway floor through embedded bolts. The surface of the base plate frame 112 is designed with anti-slip patterns to enhance friction.

[0064] As Figure 5 shown, the top end of the vertical frame 114 is rotatably equipped with a carrier frame through a slewing bearing, and double-acting hydraulic cylinders 124 are symmetrically arranged below the carrier frame on the vertical frame 114. The two cylinder bodies of the double-acting hydraulic cylinders 124 are connected in parallel through a synchronous hydraulic circuit, and the ends of their piston rods and the bottom of the carrier frame form hinge points respectively.

[0065] An isolation unit 130 is arranged between the carrier frames. The positioning angle of the carrier frames is controlled by the synchronous expansion and contraction of the double-acting hydraulic cylinders 124, so that the carrier frames can match the deformation amount of the surrounding rock in real time, thereby ensuring the dynamic fit of the isolation unit 130 with the surrounding rock.

[0066] The isolation unit 130 includes a first side plate seat 132 and a second side plate seat 134, which are arranged corresponding to the carrier frame. The first side plate seat 132 and the second side plate seat 134 are both rotatably arranged on the carrier frame, and two frame beams 136 are fixedly arranged in parallel between the first side plate seat 132 and the second side plate seat 134.

[0067] A plurality of sealing devices 140 are slidably and detachably distributed on the frame beam 136. Specifically, internal fissures, cavities and loose areas in the surrounding rock can be identified by ground penetrating radar scanning to generate a three-dimensional geological model, so as to obtain multiple reinforcement points in the coal mine paste filling area. The reinforcement points are divided into type A points, type B points and type C points. Among them, type A points (high-risk areas): areas with stress concentration, dense fissures or collapse risks, which need to be reinforced preferentially; type B points (medium-risk areas): areas with local fissures or slight deformation, which need to be routinely sealed; type C points (stable areas): the surrounding rock is intact and only basic isolation is required. Therefore, according to the spatial distribution characteristics of different types of reinforcement points, the overall installation angle and local parameters of the isolation unit 130 can be dynamically adjusted to obtain the best isolation and protection effect.

[0068] The carrier frame can be rotationally adjusted within an angle range of -15° to 25° around the vertical axis; the negative angle indicates deflection towards the roadway side, and the positive angle corresponds to deflection towards the surrounding rock side. The isolation unit 130 is horizontally or obliquely distributed.

[0069] The sealing device 140 includes a plate frame 142, on one side of which two connecting frames 143 distributed vertically are fixedly arranged horizontally. Two guide rods 145 are vertically arranged between the connecting frames 143, and two friction kits 146 are slidably arranged on the guide rods 145.

[0070] On one side of the guide rod 145, a main frame 152 is vertically arranged. The main frame 152 is fixed to the two friction kits 146. A shaft rod 153 is connected to the center of the main frame 152, and a positioning plate 154 is connected to the end of the shaft rod 153.

[0071] A connecting disk 155 is slidably sleeved on the shaft rod 153. A plurality of dampers 156 are circumferentially distributed on the connecting disk 155, and the other ends of the dampers 156 are connected to the positioning plate 154.

[0072] A plurality of support columns are also distributed on the connecting disk 155. A fixed disk 157 is arranged in parallel on one side of the connecting disk 155, and the other ends of the support columns are connected to the fixed disk 157.

[0073] A grouting plate 158 is provided at the center of the fixed plate 157. Among them, the main frame 152 can be finely adjusted in position through the sliding connection of the friction kit 146 with the guide rod 145, so that the grouting plate 158 on one side of it can be correspondingly distributed at the positions of relevant reinforcement points. Specifically, a plurality of sealing devices 140 can be slidably distributed along the frame beam 136, and the main frame 152 in each corresponding sealing device 140 can be further slidably finely adjusted (the fine adjustment range is ±10 cm). With the assistance of a laser locator, the deviation between the center of the grouting plate 158 and the reinforcement point is ≤8 cm, so that the grouting plate 158 can contact and distribute at the corresponding reinforcement point positions in the filling area. When the shaft rod 153 slides and advances towards the surrounding rock side, the grouting plate 158 abuts against the surface of the coal mine surrounding rock. At this time, the damper 156 is gradually stretched, and the pressure between the grouting plate 158 and the coal mine surrounding rock increases, realizing the isolation and confining pressure of the coal mine surrounding rock. Then, surface grouting reinforcement is carried out, and nano-epoxy resin can be injected (pressure 5 MPa), the penetration depth of the slurry is 0.4 m, and the filling rate ≥95%, thus realizing the long-term isolation and sealing effect of the coal mine surrounding rock.

[0074] An oil cylinder 160 is horizontally fixed on the main frame 152 through a bracket. A shaft plug is slidably connected inside the oil cylinder 160, and one end of the shaft rod 153 is rotatably connected to the shaft plug through a bearing. Two oil pipes 162 are connected outside the oil cylinder 160, and one of the oil pipes 162 is set as a pulse pipe. Therefore, the shaft plug driven by the oil cylinder 160 through the pulse pipe pushes the shaft rod 153 to move towards the surrounding rock side. The pulsed oil supply can control the propulsion speed (0.5 - 2 cm / s) to avoid impact damage. Among them, when the pulse pipe on the oil cylinder 160 works at a low frequency, it can be used for the flexible fitting of the initial grouting plate 158 and the surrounding rock. When the pulse pipe works at a high frequency, it can further enhance the extrusion and isolation effect on the coal mine surrounding rock, so that a grouting area is quickly formed on the surface of the surrounding rock. It should be noted that during the coal paste filling stage of the coal mine, the oil cylinder 160 stops working, and at this time, the damper 156 is in a stretched state.

[0075] A bushing 170 is coaxially arranged at the center position of the main frame 152. The shaft rod 153 is slidably inserted into the bushing 170. A guide pin is fixed on the side wall of the shaft rod 153, and a guide groove 180 is opened on the inner wall of the bushing 170. The guide pin is slidably connected with the guide groove 180. Among them, when the guide groove 180 is set as an arc-shaped structure or a corrugated structure, when the shaft rod 153 slides axially along the bushing 170, it can be correspondingly twisted through the sliding connection of the guide pin and the guide groove 180, so that the connection plate 155 on the shaft rod 153 rotates synchronously, so that the grouting plate 158 can fully spin-press the coal mine surrounding rock in the filling area. Especially during the coal paste filling stage of the coal mine, when the paste is filled under high pressure, the coal mine surrounding rock may bulge outwards.

[0076] The guiding grooves 180 are multiple groups distributed circumferentially, and the specifications of each group of guiding grooves 180 are different. A transition groove 182 is formed on the inner wall of the pipe sleeve 170. The transition groove 182 is arranged adjacent to the starting end of the guiding groove 180 and communicates with the inlet ends of all the guiding grooves 180. That is to say, a shaft rod 153 can be adopted on the main body frame 152 in each sealing device 140 to perform a sliding fit with the corresponding guiding groove 180, so that the grouting disk 158 can be twisted at different angles or reset after twisting during the sliding and advancing along with the shaft rod 153. On the one hand, it can construct grouting spaces of different shapes on the surrounding rock surface to ensure long-term isolation and sealing after grouting, so as to adjust the strategy based on the situation of the reinforcement points and achieve refined sealing of "one point, one strategy". On the other hand, after the grouting isolation is completed, when the paste is filled in the coal mine, the spinning action of the grouting disk 158 can cooperate with the elastic stretching of the damper 156 to further enhance the top pressure isolation effect on the reinforcement area and avoid the isolation failure during the high-pressure filling of the paste. The transition groove 182 is configured as an annular guiding channel capable of accommodating the circumferential rotation of the guide pin, so as to facilitate the path switching of the guide pin between different guiding grooves 180.

[0077] As Figure 4 shown, the guiding groove 180 is divided into three sections, and is sequentially divided into an introduction section, a damping adjustment section and an enhancement section along the axial direction of the shaft rod 153 close to the side of the positioning plate 154. The length of the introduction section is D1, the length of the damping adjustment section is D2, and the length of the enhancement section is D3. The introduction sections are all set as linear structures, while the damping adjustment section and the enhancement section are both set as arc-shaped structures or corrugated structures.

[0078] In Embodiment 1, when the grouting disk 158 completes grouting reinforcement and during the paste filling, after the slurry solidifies, the grouting disk 158 is bonded and fixed to the surrounding rock to form a rigid anchoring point. The grouting disk 158 is fixed on the surface of the surrounding rock. At this time, if the high-pressure filling of the paste causes the surrounding rock to bulge outwards, the guide pin on the shaft rod 153 can slide along the enhancement section towards the damping adjustment section, the damper 156 is fully stretched, and at the same time the grouting disk 158 twists along with the shaft rod 153, and the solidified layer outside it generates micro-deformation (without falling off from the surrounding rock).

[0079] In Embodiment 2, the grouting disk 158 is rotatably arranged in the fixed disk 157, and a torsion spring is arranged between the grouting disk 158 and the fixed disk 157. It should be noted that the torsion spring adopts a high-strength spring. Therefore, before the grouting operation of the grouting disk 158, it can make the grouting disk 158 and the fixed disk 157 close to a fixed setting state under the action of high elastic force; and when the paste is filled, if the high-pressure filling of the paste causes the surrounding rock to bulge outwards, the damper 156 is fully stretched, the grouting disk 158 twists along with the shaft rod 153, and at this time the torsion spring is gradually compressed, and the solidified layer and the surrounding rock remain unchanged.

[0080] It should be noted that the positions to be reinforced, reinforcement points, reinforcement point positions and reinforcement positions described in the text have the same meaning, and all represent the areas that need to be reinforced.

[0081] In this application, the term "a plurality of" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "coupled" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0082] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0083] The above are only the preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A separation device for paste filling mining in coal mines, characterized in that, Comprising: Two supports, configured to be respectively arranged on two sides of the paste filling area; A first carrier frame, rotatably arranged on one of the supports; A second carrier frame, rotatably arranged on the other support; An isolation unit, one end of the isolation unit is rotatably connected to the first carrier frame, and the other end of the isolation unit is rotatably connected to the second carrier frame; A plurality of sealing devices, arranged at intervals on the isolation unit and slidably connected to the isolation unit, the sealing devices are used for top pressing and isolating the position to be reinforced in the paste filling area; The sealing device includes a grouting assembly, and the grouting assembly is used for spraying reinforcement slurry onto the surface of the position to be reinforced.

2. The coal mine paste filling mining isolation device according to claim 1, wherein The support includes: A base plate frame; A vertical frame, arranged on one side of the base plate frame; A reinforcement frame, obliquely connected between the base plate frame and the vertical frame.

3. The coal mine paste filling mining isolation device according to claim 2, characterized in that, Further comprising: A first slewing bearing, the fixed end of the first slewing bearing is connected to the vertical frame, and the rotating end of the first slewing bearing is connected to the first carrier frame; A second slewing bearing, the fixed end of the second slewing bearing is connected to the vertical frame, and the rotating end of the second slewing bearing is connected to the second carrier frame.

4. The coal mine paste filling mining isolation device according to claim 1, characterized in that, The isolation unit includes: A first side plate seat, rotatably arranged on the first carrier frame; A second side plate seat, rotatably arranged on the second carrier frame; A frame beam, both ends of the frame beam are respectively connected to the first side plate seat and the second side plate seat.

5. The coal mine paste filling mining isolation device according to any one of claims 1 to 4, characterized in that, The sealing device further includes: A plate frame; Two connecting frames, arranged at both ends of the plate frame and on the same side of the plate frame; A guide rod, both ends of the guide rod are respectively connected to the two connecting frames; A friction kit, sleeved on the guide rod and slidably connected to the guide rod, the grouting assembly is connected to the friction kit.

6. The coal mine paste filling mining isolation device according to claim 5, characterized in that, The grouting assembly includes: A main body frame, connected to the friction kit, a shaft rod is connected to the main body frame, and a positioning plate is connected to the other end of the shaft rod; A connecting disk, slidably sleeved on the shaft rod, a plurality of dampers are circumferentially distributed on the connecting disk, and the other ends of the plurality of dampers are connected to the positioning plate; A fixed disk, arranged at an interval from the connecting disk, the fixed disk and the connecting disk are connected by support columns, and the positioning plate and the dampers are located between the fixed disk and the connecting disk; A grouting disk, arranged on the side of the fixed disk away from the connecting disk.

7. The coal mine paste filling mining isolation device according to claim 6, characterized in that, The sealing device further includes: An oil cylinder, arranged on one side of the main body frame, a shaft plug is slidably connected in the oil cylinder, and the shaft plug is connected to the shaft rod; At least two oil pipes are connected to the outside of the oil cylinder, and one of the oil pipes is a pulse pipe, and the pulse pipe is used for pulse oil supply.

8. The paste filling mining isolation device for coal mines according to claim 6, wherein, The sealing device further includes: A pipe sleeve, sleeved on the shaft rod, and the shaft rod slidably passes through the pipe sleeve; A guide pin is fixed on the side wall of the shaft rod, and a guide groove is opened on the inner wall of the pipe sleeve, and the guide pin is slidably connected to the guide groove.

9. The coal mine paste filling mining isolation device according to claim 8, wherein The guide grooves are configured in multiple groups, the multiple groups of guide grooves are circumferentially arranged at intervals on the inner wall of the pipe sleeve, and the specifications of each group of guide grooves are different; A transition groove is formed in the inner wall of the sleeve, and the transition groove is disposed adjacent to the starting end of the guide groove and communicates with the inlet ends of all the guide grooves; Wherein, the transition groove is configured as an annular guiding channel capable of accommodating circumferential rotation of the guide pin, so that the guide pin can perform path switching among different guide grooves.

10. The coal mine paste filling mining isolation device according to claim 9, characterized in that, Along the axial direction of the shaft rod, the guide groove includes: an introduction section, a damping adjustment section and an enhancement section which are connected in sequence; Wherein, the introduction section is a linear structure, and the damping adjustment section and the enhancement section are arc-shaped structures or corrugated structures.

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