Filling and plugging device for strip-type mining roadway of coal mine

Abstract

The invention belongs to the technical field of coal mines, and discloses a filling and plugging device for a strip mining roadway of a coal mine, which comprises a supporting base, and a supporting mechanism is fixedly mounted above the supporting base; a lateral retaining wall is fixedly mounted at one end of the supporting mechanism, and a groove is formed in the lateral retaining wall. Compared with a traditional device, the device has the advantages that the second air bag does not make contact with the top of the inner side of the mine hole when the device moves through lifting of the second air bag, so that damage to the second air bag is avoided, and compared with the phenomenon that friction is generated between the second air bag and the top of the inner side of the mine hole, damage can be generated; according to the device, the second air bag can be lifted, air in the first air bag can enter the second air bag, the surface of the top of the second air bag is better attached to the top of the inner side of a mine hole, slurry in the mine hole is prevented from leaking out, and therefore the working efficiency of the device is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mines, and particularly relates to a filling and plugging device for a roadway in strip mining of coal mines. Background Technique

[0002] The strip mining technology divides a specific coal seam area into several strips in a given direction, implements an operation mode of mining one strip and leaving one strip, and uses the reserved strip-shaped coal pillars to bear the pressure load of the overlying strata, thereby significantly reducing the risk of surface subsidence caused by mining activities. To further improve the resource recovery efficiency, this technology is often used in combination with the filling mining process: after completing the mining of a certain strip, the two ends of the mining roadway are closed, and then grouting filling is carried out using gangue and paste materials. After the filling body is solidified and stabilized, the mining operation of the adjacent strip coal pillar is carried out. This technology is particularly suitable for the exploitation of coal resources "under buildings, railways, and water bodies", and has significant advantages in ensuring water resource safety, preventing surface collapse, protecting land resources, and the integrity of buildings. At the same time, integrating the gangue filling process to achieve integrated mining and filling operations can effectively solve the environmental pollution problem caused by gangue stacking, and is a modern mining technology that conforms to the concept of green development.

[0003] When a general filling and plugging mechanism is in use, first, after the device is installed, slurry can be injected into the mine cave to complete the filling of the mined part of the mine cave. However, when the mine cave is excavated, the side surface of the mine cave, especially the top surface, is not a smooth surface. This will cause the top of the side retaining wall of a general filling and plugging device to not be tightly connected to the inner top of the mine cave when in use. The traditional device adds an airbag on the top of the side retaining wall to make the airbag closely fit the inner top of the mine cave. However, when the device is towed, the airbag will also move with the device, and the uneven places on the inner top of the mine cave will block the movement of the airbag, making the movement of the device more troublesome. Therefore, it needs to be reformed and optimized. Summary of the Invention

[0004] The purpose of the present invention is to provide a filling and plugging device for a roadway in strip mining of coal mines to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A filling and plugging device for a roadway in strip mining of coal mines, including a support base, and a support mechanism is fixedly installed above the support base;

[0006] One end of the support mechanism is fixedly installed with a lateral retaining wall. A groove is formed inside the lateral retaining wall. At the bottom inside the groove, a first electric telescopic rod is fixedly installed. Above the first electric telescopic rod, a moving plate is fixedly installed. Above the moving plate, a first airbag is fixedly installed. Above the first airbag, a bottom frame is fixedly installed. Above the bottom frame, a second airbag is fixedly installed. Above the first airbag, a connecting pipe is fixedly connected. The top of the connecting pipe penetrates through the upper and lower sides of the bottom frame and extends into the interior of the second airbag. At the bottom of the bottom frame, a limiting rod is fixedly installed. The bottom of the limiting rod penetrates through the upper and lower sides of the moving plate.

[0007] Preferably, a U-shaped bracket is fixedly installed above the support base. A sliding rod is movably installed above the U-shaped bracket. The bottom of the sliding rod penetrates through the upper and lower sides of the U-shaped bracket. Above the sliding rod, a top plate is fixedly installed. A threaded rod is threadedly sleeved inside the support base. A knob is fixedly sleeved on the outer surface of the threaded rod. The bottom of the threaded rod extends into the interior of the support base. At the bottom of the threaded rod, a connecting plate is rotatably installed. A connecting rod is hinged to the side of the connecting plate. One end of the connecting rod is hinged to a hinge plate. The bottom of the sliding rod successively penetrates through the upper and lower sides of the threaded rod and the upper and lower sides of the connecting plate. A bottom plate is fixedly installed at the bottom of the sliding rod. The side of the bottom plate is hinged to the hinge plate.

[0008] Preferably, a housing is fixedly installed above the support base. On both sides inside the housing, a first baffle is fixedly installed. A spring is fixedly installed at the bottom of the first baffle. A second baffle is fixedly installed at the bottom of the spring. A tooth is fixedly installed at the bottom of the second baffle. The bottom of the tooth extends to the bottom of the housing. A sliding rod is fixedly installed at the top of the second baffle. The top of the sliding rod penetrates through the upper and lower sides of the first baffle. A gear is rotatably installed on one side of the support base. An electric telescopic rod is hinged to the side of the gear. One end of the electric telescopic rod is hinged to a support seat. One side of the second baffle extends to the outside of the housing.

[0009] Preferably, the tooth is located above the gear, and the tooth meshes with the gear.

[0010] Preferably, a friction plate is fixedly installed at the bottom of the support seat, and the friction plate is located obliquely below the support base.

[0011] Preferably, side airbags are fixedly installed on both the left and right sides of the lateral retaining wall. A grouting pipe is fixedly installed on one side of the lateral retaining wall. One end of the grouting pipe penetrates through the left and right sides of the lateral retaining wall.

[0012] Preferably, the support mechanism includes a first side plate fixedly arranged above the support base. A first support rod is fixedly installed on one side of the first side plate. One end of the first support rod is fixedly connected to the lateral retaining wall.

[0013] Preferably, a second side plate is fixedly installed above the support base, and a second support rod is fixedly installed on one side of the second side plate. One end of the second support rod is fixedly connected to the lateral retaining wall.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. By starting the first electric telescopic rod to move upward, the chassis moves upward. Due to the upward movement of the chassis, the second airbag moves upward. Then, the first electric telescopic rod drives the moving plate to move upward, squeezing the gas inside the first airbag into the second airbag. Compared with traditional devices, by lifting and lowering the second airbag, when the device moves, the second airbag will not come into contact with the inner top of the mine tunnel, thus preventing damage to the second airbag. In contrast to traditional devices where the second airbag will rub against the inner top of the mine tunnel and be damaged, this device can not only lift and lower the second airbag but also allow the gas inside the first airbag to enter the second airbag, making the surface of the top of the second airbag fit more closely to the inner top of the mine tunnel, thereby preventing the leakage of slurry inside the mine tunnel and improving the working efficiency of the device.

[0016] 2. By rotating the knob to drive the rotation of the threaded rod, the threaded rod moves downward. Due to the downward movement of the threaded rod, the bottom plate moves downward. When the bottom of the second baffle contacts the U-shaped bracket, continuing to rotate the knob will cause the hinge plate to unfold. Compared with traditional devices, by unfolding the hinge plate, the contact area with the ground can be increased, thereby improving the stability of the device. In contrast to traditional devices that improve stability by restricting the rotation of the rollers, this device can achieve higher stability. At the same time, when the hinge plate is not in use, it can be retracted to reduce the resistance caused by the friction between the bottom plate and the ground during movement, which affects the movement of the device.

[0017] 3. By moving the second baffle upward to drive the teeth upward, when the teeth move upward to the outside of the gear and do not mesh with the gear, the position of the support base can be changed by rotating the second electric telescopic rod at this time. Compared with traditional devices, by changing the angle of the second electric telescopic rod, the friction between the support base and the ground can be increased, thereby contributing to improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structure diagram of the present invention;

[0019] Figure 2 is the schematic diagram of the internal structure of the groove of the present invention;

[0020] Figure 3 is the schematic diagram of the internal structure of the threaded rod of the present invention;

[0021] Figure 4 For the present invention Figure 3 Partial enlarged schematic view of part A of the present invention;

[0022] Figure 5 Schematic diagram of the internal structure of the outer shell of the present invention;

[0023] Figure 6 For the present invention Figure 5 Partial enlarged schematic view of part B of the present invention;

[0024] Figure 7 Schematic diagram of the connecting pipe structure of the present invention.

[0025] In the figure: 1, support base; 2, first side plate; 3, first support rod; 4, second side plate; 5, second support rod; 6, lateral retaining wall; 7, groove; 8, first electric telescopic rod; 9, first airbag; 10, limiting rod; 11, chassis; 12, connecting pipe; 13, second airbag; 14, side airbag; 15, grouting pipe; 16, U-shaped bracket; 17, sliding rod; 18, top plate; 19, bottom plate; 20, hinged plate; 21, connecting rod; 22, connecting plate; 23, threaded rod; 24, knob; 25, outer shell; 26, first baffle; 27, spring; 28, second baffle; 29, tooth; 30, sliding rod; 31, gear; 32, second electric telescopic rod; 33, support seat; 34, friction plate; 35, moving plate. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0027] As Figures 1 to 7 shown, the embodiment of the present invention provides a filling and plugging device for a coal mine strip mining roadway, including a support base 1, and a support mechanism is fixedly installed above the support base 1;

[0028] One end of the support mechanism is fixedly installed with a lateral retaining wall 6. A groove 7 is formed inside the lateral retaining wall 6. At the bottom inside the groove 7, an electric telescopic rod 8 is fixedly installed. Above the electric telescopic rod 8, a moving plate 35 is fixedly installed. Above the moving plate 35, an airbag 9 is fixedly installed. Above the airbag 9, a chassis 11 is fixedly installed. Above the chassis 11, an airbag 13 is fixedly installed. Above the airbag 9, a connecting pipe 12 is fixedly connected. The top of the connecting pipe 12 penetrates through the upper and lower sides of the chassis 11 and extends into the interior of the airbag 13. At the bottom of the chassis 11, a limiting rod 10 is fixedly installed. The bottom of the limiting rod 10 penetrates through the upper and lower sides of the moving plate 35.

[0029] When the staff is using it and after the device is installed, the staff first starts the electric telescopic rod 8 by remote control. When the electric telescopic rod 8 starts, it will drive the moving plate 35 to move upward. When the moving plate 35 moves upward, it will drive the airbag 9 to move upward. When the airbag 9 moves upward, it will drive the airbag 9 to move upward. When the airbag 9 moves upward, it will cause the chassis 11 to move upward. When the chassis 11 moves upward, it will cause the airbag 13 to move upward. When the top of the airbag 13 contacts the top inside the mine tunnel, the electric telescopic rod 8 continues to push the moving plate 35 upward, and the gas inside the airbag 9 will enter the interior of the airbag 13 through the connecting pipe 12, so that the bottom of the airbag 13 is in close contact with the top inside the mine tunnel.

[0030] By starting the electric telescopic rod 8 to move upward, the chassis 11 is driven to move upward. By the upward movement of the chassis 11, the airbag 13 is driven to move upward. Then, by the electric telescopic rod 8 driving the moving plate 35 to move upward, the moving plate 35 moves upward to squeeze the gas inside the airbag 9 into the interior of the airbag 13. Compared with the traditional device, by lifting the airbag 13, when the device moves, the airbag 13 will not contact the top inside the mine tunnel, resulting in damage to the airbag 13. In contrast to the traditional device where the airbag 13 will rub against the top inside the mine tunnel and be damaged, this device can not only lift the airbag 13, but also make the gas inside the airbag 9 enter the interior of the airbag 13, making the surface of the top of the airbag 13 fit more closely with the top inside the mine tunnel, thereby preventing the leakage of the slurry inside the mine tunnel and improving the working efficiency of the device.

[0031] Among them, a U-shaped bracket 16 is fixedly installed above the support base 1. A slide bar 17 is movably installed above the U-shaped bracket 16. The bottom of the slide bar 17 penetrates through the upper and lower sides of the U-shaped bracket 16. A top plate 18 is fixedly installed above the slide bar 17. A threaded rod 23 is threadedly sleeved inside the support base 1. A knob 24 is fixedly sleeved on the outer surface of the threaded rod 23. The bottom of the threaded rod 23 extends into the support base 1. A connecting plate 22 is rotatably installed at the bottom of the threaded rod 23. A connecting rod 21 is hinged to the side of the connecting plate 22. One end of the connecting rod 21 is hinged to a hinge plate 20. The bottom of the slide bar 17 successively penetrates through the upper and lower sides of the threaded rod 23 and the upper and lower sides of the connecting plate 22. A bottom plate 19 is fixedly installed at the bottom of the slide bar 17. The side of the bottom plate 19 is hinged to the hinge plate 20.

[0032] When the staff uses it, the staff first rotates the knob 24. When the knob 24 rotates, it will drive the rotation of the threaded rod 23. When the threaded rod 23 rotates, since the threaded rod 23 is threadedly sleeved with the support base 1, as the threaded rod 23 rotates, the threaded rod 23 will move downward. When the threaded rod 23 moves downward, the connecting plate 22 will move downward. When the connecting plate 22 moves downward, it will drive the connecting rod 21, the hinge plate 20 and the bottom plate 19 to move downward. When the bottom of the top plate 18 contacts the U-shaped bracket 16, then continue to rotate the knob 24. The threaded rod 23 will move downward on the surface of the connecting plate 22, thereby driving the connecting plate 22 to continue to move downward, and will drive one end of the connecting rod 21 to expand outward, thereby driving the hinge plate 20 to expand.

[0033] By rotating the knob 24 to drive the rotation of the threaded rod 23, the threaded rod 23 moves downward. Due to the downward movement of the threaded rod 23, the bottom plate 19 will move downward. When the bottom of the baffle two 28 contacts the U-shaped bracket 16, continuing to rotate the knob 24 will cause the hinge plate 20 to expand. Compared with the traditional device, through the expansion of the hinge plate 20, the contact area with the ground can be increased, thereby improving the stability of the device. Compared with the traditional device, by restricting the rotation of the rollers, the stability of the device is improved. This device can make the stability of the device higher. At the same time, when the hinge plate 20 is not used, it can be retracted to reduce the resistance caused by the friction between the bottom plate 19 and the ground during movement, which affects the movement of the device.

[0034] Above the support base 1, a housing 25 is fixedly installed. On both sides inside the housing 25, a first baffle 26 is fixedly installed. At the bottom of the first baffle 26, a spring 27 is fixedly installed. At the bottom of the spring 27, a second baffle 28 is fixedly installed. At the bottom of the second baffle 28, a tooth 29 is fixedly installed. The bottom of the tooth 29 extends to the bottom of the housing 25. At the top of the second baffle 28, a sliding rod 30 is fixedly installed. The top of the sliding rod 30 penetrates through the upper and lower sides of the first baffle 26. On one side of the support base 1, a gear 31 is rotatably installed. On the side of the gear 31, a second electric telescopic rod 32 is hinged. One end of the second electric telescopic rod 32 is hinged to a support 33. One side of the second baffle 28 extends to the outside of the housing 25.

[0035] When the staff uses it, the staff first moves the second baffle 28 upward. When the second baffle 28 moves upward, it will drive the sliding rod 30 to move upward. When the sliding rod 30 moves upward and the second baffle 28 moves upward, the spring 27 will be compressed. As the second baffle 28 moves upward, the tooth 29 will move upward. When the tooth 29 moves upward, the tooth 29 will no longer mesh with the gear 31. At this time, the gear 31 can be driven to rotate by rotating the second electric telescopic rod 32. When the second electric telescopic rod 32 rotates to a suitable position, the second baffle 28 can be released at this time, so that the spring 27 drives the tooth 29 to move downward and mesh with the gear 31, thereby fixing the gear 31.

[0036] By moving the second baffle 28 upward to drive the tooth 29 upward, when the tooth 29 moves upward to the outside of the gear 31 and does not mesh with the gear 31, the position of the support 33 can be changed by rotating the second electric telescopic rod 32 at this time. Compared with the traditional device, by changing the angle of the second electric telescopic rod 32, the friction between the support 33 and the ground is greater, which helps to improve the stability of the device.

[0037] Among them, the tooth 29 is located above the gear 31, and the tooth 29 meshes with the gear 31.

[0038] Through the meshing of the tooth 29 and the gear 31, when the gear 31 meshes with the tooth 29, the rotation of the gear 31 can be blocked.

[0039] Among them, a friction plate 34 is fixedly installed at the bottom of the support 33, and the friction plate 34 is located obliquely below the support base 1.

[0040] Through the design of the friction plate 34, the friction between the device and the ground can be increased, the friction force can be improved, and the stability can be enhanced.

[0041] Among them, side airbags 14 are fixedly installed on both the left and right sides of the side retaining wall 6, and a grouting pipe 15 is fixedly installed on one side of the side retaining wall 6. One end of the grouting pipe 15 penetrates through the left and right sides of the side retaining wall 6.

[0042] Through the design of the grouting pipe 15, it is convenient for the staff to inject slurry into the interior of the mine tunnel by passing the grouting pipe through the grouting pipe 15.

[0043] Among them, the support mechanism includes a first side plate 2 fixedly arranged above the support base 1. One side of the first side plate 2 is fixedly installed with a first support rod 3, and one end of the first support rod 3 is fixedly connected to the lateral retaining wall 6.

[0044] Through the design of the first side plate 2 and the first support rod 3, the position of the lateral retaining wall 6 is supported, improving the support force of the device.

[0045] Among them, a second side plate 4 is fixedly installed above the support base 1. One side of the second side plate 4 is fixedly installed with a second support rod 5, and one end of the second support rod 5 is fixedly connected to the lateral retaining wall 6.

[0046] Through the design of the second side plate 4 and the second support rod 5, the connection strength between the lateral retaining wall 6 and the support base 1 can be enhanced.

[0047] Working principle and usage process:

[0048] When the staff is using it and after the device is installed, the staff first remotely activates the first electric telescopic rod 8. When the first electric telescopic rod 8 is activated, it will drive the moving plate 35 to move upward. When the moving plate 35 moves upward, it will drive the first airbag 9 to move upward. When the first airbag 9 moves upward, it will drive the first airbag 9 to move upward. When the first airbag 9 moves upward, it will cause the chassis 11 to move upward. When the chassis 11 moves upward, it will cause the second airbag 13 to move upward. When the top of the second airbag 13 contacts the top inside the mine tunnel, the first electric telescopic rod 8 continues to push the moving plate 35 upward, and the gas inside the first airbag 9 will enter the inside of the second airbag 13 through the connecting pipe 12, so that the bottom of the second airbag 13 is in close contact with the top inside the mine tunnel.

[0049] When the staff is using it, the staff first rotates the knob 24. When the knob 24 rotates, it will drive the rotation of the threaded rod 23. When the threaded rod 23 rotates, since the threaded rod 23 is threadedly sleeved with the support base 1, as the threaded rod 23 rotates, the threaded rod 23 will move downward. When the threaded rod 23 moves downward, it will cause the connecting plate 22 to move downward. When the connecting plate 22 moves downward, it will drive the connecting rod 21, the hinge plate 20, and the bottom plate 19 to move downward. When the bottom of the top plate 18 contacts the U-shaped bracket 16, at this time, continue to rotate the knob 24, and the threaded rod 23 will move downward on the surface of the connecting plate 22, thereby driving the connecting plate 22 to continue to move downward, and it will drive one end of the connecting rod 21 to expand outward, thereby driving the hinge plate 20 to expand.

[0050] When in use by the staff, the staff first move the second baffle 28 upward. When the second baffle 28 moves upward, it will drive the slide bar 30 to move upward. When the slide bar 30 moves upward and the second baffle 28 moves upward, the spring 27 will be compressed. As the second baffle 28 moves upward, the latch 29 will move upward. When the latch 29 moves upward, the latch 29 will no longer engage with the gear 31. At this time, the rotation of the second electric telescopic rod 32 can be used to drive the rotation of the gear 31. When the second electric telescopic rod 32 rotates to a suitable position, the second baffle 28 can be released at this time, so that the spring 27 drives the latch 29 to move downward and engage with the gear 31, thereby fixing the gear 31.

[0051] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filling and plugging device for a roadway in strip mining of coal mines, comprising a support base (1), characterized in that: Above the support base (1), a support mechanism is fixedly installed. One end of the support mechanism is fixedly installed with a side retaining wall (6). A groove (7) is provided inside the side retaining wall (6). At the bottom inside the groove (7), a first electric telescopic rod (8) is fixedly installed. Above the first electric telescopic rod (8), a moving plate (35) is fixedly installed. Above the moving plate (35), a first airbag (9) is fixedly installed. Above the first airbag (9), a chassis (11) is fixedly installed. Above the chassis (11), a second airbag (13) is fixedly installed. The first airbag (9) is fixedly connected to a connecting pipe (12) at the top. The top of the connecting pipe (12) penetrates through the upper and lower sides of the chassis (11) and extends into the interior of the second airbag (13). At the bottom of the chassis (11), a limiting rod (10) is fixedly installed. The bottom of the limiting rod (10) penetrates through the upper and lower sides of the moving plate (35).

2. The filling and plugging device for a coal mine strip mining roadway according to claim 1, wherein: Above the support base (1), a U-shaped bracket (16) is fixedly installed. Above the U-shaped bracket (16), a sliding rod (17) is movably installed. The bottom of the sliding rod (17) penetrates through the upper and lower sides of the U-shaped bracket (16). Above the sliding rod (17), a top plate (18) is fixedly installed. Inside the support base (1), a threaded rod (23) is threadedly sleeved. A knob (24) is fixedly sleeved on the outer surface of the threaded rod (23). The bottom of the threaded rod (23) extends into the interior of the support base (1). At the bottom of the threaded rod (23), a connecting plate (22) is rotatably installed. A connecting rod (21) is hinged to the side of the connecting plate (22). One end of the connecting rod (21) is hinged to a hinge plate (20). The bottom of the sliding rod (17) penetrates through the upper and lower sides of the threaded rod (23) and the upper and lower sides of the connecting plate (22) in sequence. At the bottom of the sliding rod (17), a bottom plate (19) is fixedly installed. The side of the bottom plate (19) is hinged to the hinge plate (20).

3. The filling and plugging device for a coal mine strip mining roadway according to claim 1, characterized in that: Above the support base (1), a housing (25) is fixedly installed. On both sides inside the housing (25), a first baffle (26) is fixedly installed. At the bottom of the first baffle (26), a spring (27) is fixedly installed. At the bottom of the spring (27), a second baffle (28) is fixedly installed. At the bottom of the second baffle (28), a tooth (29) is fixedly installed. The bottom of the tooth (29) extends to the bottom of the housing (25). At the top of the second baffle (28), a sliding rod (30) is fixedly installed. The top of the sliding rod (30) penetrates through the upper and lower sides of the first baffle (26). On one side of the support base (1), a gear (31) is rotatably installed. A second electric telescopic rod (32) is hinged to the side of the gear (31). One end of the second electric telescopic rod (32) is hinged to a support seat (33). One side of the second baffle (28) extends to the outside of the housing (25).

4. The filling and plugging device for a coal mine strip mining roadway according to claim 3, characterized in that: The tooth (29) is located above the gear (31), and the tooth (29) meshes with the gear (31).

5. The filling and plugging device for a coal mine strip mining roadway according to claim 3, characterized in that: A friction plate (34) is fixedly installed at the bottom of the support base (33), and the friction plate (34) is located obliquely below the support base (1).

6. The filling and plugging device for a coal mine strip mining roadway according to claim 1, characterized in that: Side airbags (14) are fixedly installed on both the left and right sides of the side retaining wall (6), and a grouting pipe (15) is fixedly installed on one side of the side retaining wall (6). One end of the grouting pipe (15) penetrates through the left and right sides of the side retaining wall (6).

7. The filling and plugging device for a coal mine strip mining roadway according to claim 1, characterized in that: The support mechanism includes a first side plate (2) fixedly arranged above the support base (1). A first support rod (3) is fixedly installed on one side of the first side plate (2), and one end of the first support rod (3) is fixedly connected to the side retaining wall (6).

8. The filling and plugging device for a coal mine strip mining roadway according to claim 1, wherein: A second side plate (4) is fixedly installed above the support base (1). A second support rod (5) is fixedly installed on one side of the second side plate (4), and one end of the second support rod (5) is fixedly connected to the side retaining wall (6).

Images