Coal mine water disaster prevention and treatment grouting device

Abstract

The present application belongs to the technical field of coal mine water disaster prevention, and particularly relates to a coal mine water disaster prevention grouting device, which comprises a bottom plate, a box body fixedly connected to the top surface of the bottom plate, movable wheels assembled near the corners of the bottom plate, a mud adding pipe fixedly connected to the top surface of the box body, a supporting plate fixedly connected between the bottom plate and the box body, a water tank fixedly connected to the top surface of the supporting plate, a water adding pipe fixedly connected to the top surface of the water tank, a pressure pump fixedly installed on the top surface of the bottom plate, a tee joint pipe fixedly connected to the side wall of the pressure pump, the other two ends of the tee joint pipe being communicated with the box body and the water tank respectively, a flow guide pipe fixedly connected to the side wall of the pressure pump, a plurality of hoses fixedly connected to the side wall of the flow guide pipe, and a grouting pipe movably connected to the other end of the hose. The present application can seal the space between the grouting pipe and the hole while grouting, ensure sufficient pressure inside the hole, and facilitate the penetration of the mud into the gap and the hole.

Description

Technical Field

[0001] This invention belongs to the field of coal mine water disaster prevention and control technology, and specifically relates to a grouting device for coal mine water disaster prevention and control. Background Technology

[0002] Grouting in coal mines is a measure to prevent and control coal mine flooding. It primarily involves filling cracks and cavities in the mine with grout through spraying, preventing water from entering or spreading, thus achieving the goal of flood prevention. Grouting is generally carried out in areas where coal mine water sources are exposed. Grouting reinforces the geological body by filling cracks, cavities, or faults, making it more solid and stable, reducing water seepage and leakage, and preventing water inflow. This method can reduce water accumulation and inrush beneath the coal mine working face, ensuring the safety of the working face.

[0003] A patent search revealed that Chinese patent CN109339821B discloses a grouting device for preventing coal mine water disasters. The device extends the grouting head assembly into the position to be grouted. The grouting head assembly is equipped with an oscillation component inside. The oscillation component causes the grouting head assembly to oscillate back and forth in its straight extension direction, which can ensure the grouting effect and improve the prevention and control capabilities of coal mine water disasters.

[0004] Typically, grouting is performed by drilling holes in the sidewall of the tunnel and inserting grouting pipes. During grouting, it is essential to ensure the grouting pipes are sealed to the external space to prevent grout from spraying out of the holes. However, the aforementioned devices do not have any sealing components for the holes. During grouting, the internal pressure of the holes can be too high, which can easily squeeze out the grouting pipes. Furthermore, the grout, affected by the pressure, will also leak out of the holes as it seeps into cracks or cavities, affecting grouting efficiency and wasting grout. Summary of the Invention

[0005] The purpose of this invention is to provide a grouting device for preventing water disasters in coal mines, which can seal the grouting pipe and the hole during grouting to ensure sufficient pressure inside the hole and facilitate the infiltration of slurry into the gaps and holes.

[0006] The specific technical solution adopted by this invention is as follows:

[0007] A grouting device for preventing water disasters in coal mines includes a base plate, a box body fixedly connected to the top surface of the base plate, movable wheels mounted near the four corners of the bottom surface of the base plate, and a mud-filling pipe fixedly connected to the top surface of the box body.

[0008] A support plate is fixedly connected between the base plate and the box body. A water tank is fixedly connected to the top surface of the support plate. A water inlet pipe is fixedly connected to the top surface of the water tank. A pressure pump is fixedly installed on the top surface of the base plate. A T-pipe is fixedly connected to the side wall of the pressure pump. The other two ends of the T-pipe are respectively connected to the box body and the water tank. A guide pipe is fixedly connected to the side wall of the pressure pump. Several flexible hoses are fixedly connected to the side wall of the guide pipe. A grouting pipe is movably connected to the other end of the flexible hoses. A transmission assembly is provided on the side wall of the grouting pipe.

[0009] The other end of the hose is movably connected to a connecting pipe, and the bottom end of the connecting pipe is fixedly connected to a threaded pipe. The grouting pipe is rotatably connected to the threaded pipe, and the diameter of the threaded pipe is larger than the diameter of the grouting pipe.

[0010] The transmission assembly includes a housing fixedly mounted on a connecting pipe. A first gear is fixedly connected to the connecting pipe on the inner wall of the housing cavity. A second gear meshes with one side of the first gear. The second gear is rotatably connected to the housing. A rotating rod is fixedly connected to the top surface of the second gear. The top end of the rotating rod passes through the housing and is rotatably connected to it.

[0011] The rotating rod has a hexagonal cross-section, and a hexagonal groove is provided on the top end face of the rotating rod.

[0012] A baffle is fixedly connected to the side wall of the threaded pipe near the top. The baffle is circular and its diameter is larger than that of the threaded pipe.

[0013] A sleeve is rotatably connected to the inner wall of the connecting pipe near the top end. The top end of the sleeve penetrates the shell and is rotatably connected to it. One end of the hose is fixedly connected to the sleeve.

[0014] Several adapter pipes are fixedly connected to the side wall of the guide pipe, and the hose is fixedly connected to the adapter pipes. Each adapter pipe is equipped with a control valve on its side wall.

[0015] Two inclined plates are fixedly connected to the top surface of the base plate near the left side, and the same push rod is fixedly connected between the two inclined plates.

[0016] A storage box is fixedly connected to the right side wall of the water tank, and a cover plate is fitted on the top surface of the storage box.

[0017] A valve is installed at the corner of the side wall of the tee pipe.

[0018] The technical effects achieved by this invention are as follows:

[0019] This invention relates to a coal mine water disaster prevention grouting device. Through the cooperation of a housing, water tank, pressure pump, grouting pipe, and transmission components, grouting holes are opened in the roadway, and then the grouting pipe is inserted and sealed. This allows the grout to fill the holes along the crack direction under grouting pressure, reducing grout leakage and waste while ensuring efficient grouting of cracks. In addition, the design of multiple grouting pipes allows for simultaneous grouting of multiple holes on the roadway sidewall, ensuring uniform stress distribution during grouting of cracks in the roadway and improving grouting stability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the right oblique view structure according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the left oblique view structure according to an embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional view of the grouting pipe in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the transmission assembly in an embodiment of the present invention;

[0024] Figure 5 This is an embodiment of the present invention. Figure 1 Enlarged view of point A in the image.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Base plate; 2. Box body; 3. Casters; 4. Mud filling pipe; 5. Support plate; 6. Water tank; 7. Water filling pipe; 8. Pressure pump; 9. T-pipe; 10. Valve; 11. Guide pipe; 12. Transfer pipe; 13. Hose; 14. Connecting pipe; 15. Threaded pipe; 16. Grouting pipe; 17. First gear; 18. Second gear; 19. Rotating rod; 20. Shell; 21. Baffle; 22. Sleeve; 23. Control valve; 24. Inclined plate; 25. Push rod; 26. Storage box. Detailed Implementation

[0027] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0028] like Figures 1-5As shown, a grouting device for preventing water disasters in coal mines includes a base plate 1, a box 2 fixedly connected to the top surface of the base plate 1, and movable wheels 3 are installed near the four corners of the bottom surface of the base plate 1. The movable wheels 3 are lockable universal wheels, which are convenient for movement and control of direction and have high flexibility. A mud filling pipe 4 is fixedly connected to the top surface of the box 2.

[0029] A support plate 5 is fixedly connected between the base plate 1 and the box body 2. A water tank 6 is fixedly connected to the top surface of the support plate 5. A water inlet pipe 7 is fixedly connected to the top surface of the water tank 6. A pressure pump 8 is fixedly installed on the top surface of the base plate 1. A tee pipe 9 is fixedly connected to the side wall of the pressure pump 8. The other two ends of the tee pipe 9 are respectively connected to the box body 2 and the water tank 6. A guide pipe 11 is fixedly connected to the side wall of the pressure pump 8. Several hoses 13 are fixedly connected to the side wall of the guide pipe 11. A grouting pipe 16 is movably connected to the other end of the hoses 13. A transmission component is provided on the side wall of the grouting pipe 16.

[0030] Through the cooperation of the box body 2, water tank 6, pressure pump 8, grouting pipe 16 and transmission components, after the grouting holes are opened in the roadway, the grouting pipe 16 is inserted and sealed. This allows the grout to fill the hole along the direction of the crack under grouting pressure, reducing grout leakage and waste, and ensuring grouting efficiency. In addition, the design of multiple grouting pipes 16 allows for simultaneous grouting of multiple grouting holes on the roadway sidewall, ensuring uniform stress distribution during grouting of cracks in the roadway and improving grouting stability.

[0031] The other end of the hose 13 is movably connected to the connecting pipe 14, and the bottom end of the connecting pipe 14 is fixedly connected to the threaded pipe 15. The grouting pipe 16 is rotatably connected to the threaded pipe 15, and the diameter of the threaded pipe 15 is larger than the diameter of the grouting pipe 16.

[0032] like Figure 4 As shown, the transmission assembly includes a housing 20 fixedly mounted on a connecting pipe 14. A first gear 17 is fixedly connected to the connecting pipe 14 on the inner wall of the housing 20. A second gear 18 meshes with one side of the first gear 17. The second gear 18 is rotatably connected to the housing 20. A rotating rod 19 is fixedly connected to the top surface of the second gear 18. The top end of the rotating rod 19 passes through the housing 20 and is rotatably connected to it.

[0033] The cross-section of the rotating rod 19 is hexagonal, and a hexagonal groove is provided on the top end face of the rotating rod 19.

[0034] Specifically, the rotating rod 19 can be driven by a manual wrench or an electric wrench. The electric wrench can also be replaced by a handheld drill used for drilling. Simply change the drill bit size to drive the rotating rod 19 to rotate, thereby driving the threaded tube 15 to be inserted into the hole.

[0035] like Figures 2-3As shown, a baffle 21 is fixedly connected to the side wall of the threaded tube 15 near the top. The baffle 21 is circular and its diameter is larger than that of the threaded tube 15.

[0036] The baffle 21 can both limit the threaded pipe 15 to prevent it from entering the hole too deeply and affecting the removal of the grouting pipe 16 later, and also provide a secondary sealing effect on the hole. When the threaded pipe 15 rotates into the hole, the baffle 21 is in close contact with the edge of the hole, which plays an auxiliary sealing role.

[0037] In addition, if the soil around the threaded pipe 15 becomes loose and causes mud leakage, the baffle 21 can also shield the mud and prevent it from being sprayed under pressure, thus avoiding safety hazards to workers.

[0038] like Figure 4 As shown, a sleeve 22 is rotatably connected to the inner wall of the connecting pipe 14 near the top. The top of the sleeve 22 passes through the housing 20 and is rotatably connected to it. One end of the hose 13 is fixedly connected to the sleeve 22.

[0039] Specifically, the sleeve 22 and the connecting pipe 14 are connected by a slider and groove, and the slider and groove are annular. On the one hand, when the connecting pipe 14 rotates, it will not drive the sleeve 22 and the hose 13 to rotate. On the other hand, it achieves a limiting and sealing effect between the two, ensuring that the grout will not leak during the grouting process.

[0040] like Figure 5 As shown, several adapter pipes 12 are fixedly connected to the side wall of the guide pipe 11, and the hose 13 is fixedly connected to the adapter pipe 12. Each adapter pipe 12 is equipped with a control valve 23 on its side wall.

[0041] Specifically, the fixed connection between the hose 13 and the adapter pipe 12 can be achieved by various connection methods such as threaded connection, joint connection, and flange connection. The purpose is to facilitate the replacement or maintenance of the hose 13 in the future and increase the convenience of later maintenance. In addition, the control valve 23 mainly controls the connection status between the guide pipe 11 and the hose 13. When grouting is required for one or a few grouting holes, other excess grouting pipes 16 can be closed by the control valve 23 so that the mud will not flow into the grouting pipes 16.

[0042] like Figures 1-2 As shown, two inclined plates 24 are fixedly connected to the top surface of the base plate 1 near the left side, and the same push rod 25 is fixedly connected between the two inclined plates 24.

[0043] The device can be moved by using push rod 25. Due to the small space in the tunnel, it is easy to control the direction and observe the surrounding environment by hand, which has high flexibility and is more convenient and practical than the traction method.

[0044] like Figure 1 As shown, a storage box 26 is fixedly connected to the right side wall of the water tank 6, and a cover plate is fitted on the top surface of the storage box 26.

[0045] The storage box 26 can be used to store tools used during grouting, such as drill bits for drilling, wrenches for turning the rotating rod 19, and cleaning tools.

[0046] like Figures 1-2 As shown, a valve 10 is installed at the corner of the side wall of the tee pipe 9.

[0047] Specifically, valve 10 can be any type of manual valve, electric valve, or solenoid valve. Its main purpose is to control the connection status of the three-way pipe 9. When grouting is required in the roadway, valve 10 can be used to control the connection between the three-way pipe 9 and the box 2. After grouting is completed, in order to prevent mud from adhering in the pipe and causing blockage, valve 10 can be used to connect the three-way pipe 9 to the water tank 6. The clean water in the water tank 6 can be used to flush the pipe so that it will not affect the next use and effectively extend the service life of each pipe.

[0048] The working principle of this invention is as follows: First, mud and clean water are injected into the box 2 and water tank 6 respectively. When it is necessary to fill the cracks on the inner wall of the tunnel with grout, the device is first pushed to the designated position in the tunnel. Then, grouting holes are opened on the side wall of the tunnel so that the holes can communicate with the cracks. After that, the grouting pipes 16 are inserted into the holes one by one. When the threaded pipe 15 is attached to the hole, the lever 19 is rotated with a wrench. The lever 19 drives the second gear 18 to rotate. The second gear 18 meshes with the first gear 17 and drives the connecting pipe 14 to rotate. The connecting pipe 14 drives the threaded pipe to rotate. Rotating the threaded pipe 15 allows it to enter the hole and fit tightly against the sidewall. Once the baffle 21 is in contact with the sidewall, the installation of the grouting pipe 16 is complete. Then, the pressure pump 8 is started, which delivers the slurry to the guide pipe 11 and sprays it out from the grouting pipe 16 through the hose 13 and the threaded pipe 15, filling the hole with slurry. The pressure of the slurry allows it to seep into the cracks. By using multiple grouting pipes 16 to grout simultaneously, the cracks around the roadway can be grouted synchronously, ensuring consistent stress on the roadway and thus improving its grouting efficiency.

[0049] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A grouting device for preventing water disasters in coal mines, characterized in that: Includes a base plate (1), a box body (2) is fixedly connected to the top surface of the base plate (1), and movable wheels (3) are installed near the four corners of the bottom surface of the base plate (1). A mud filling pipe (4) is fixedly connected to the top surface of the box body (2). A support plate (5) is fixedly connected between the base plate (1) and the box body (2). A water tank (6) is fixedly connected to the top surface of the support plate (5). A water filling pipe (7) is fixedly connected to the top surface of the water tank (6). A pressure pump (8) is fixedly installed on the top surface of the base plate (1). A three-way pipe (9) is fixedly connected to the side wall of the pressure pump (8). The other two ends of the three-way pipe (9) are respectively connected to the box body (2) and the water tank (6). A guide pipe (11) is fixedly connected to the side wall of the pressure pump (8). Several hoses (13) are fixedly connected to the side wall of the guide pipe (11). A grouting pipe (16) is movably connected to the other end of the hoses (13). A transmission assembly is provided on the side wall of the grouting pipe (16). The other end of the hose (13) is movably connected to a connecting pipe (14), and the bottom end of the connecting pipe (14) is fixedly connected to a threaded pipe (15). The grouting pipe (16) is rotatably connected to the threaded pipe (15), and the diameter of the threaded pipe (15) is larger than the diameter of the grouting pipe (16). The transmission assembly includes a housing (20) fixedly mounted on a connecting pipe (14). A first gear (17) is fixedly connected to the connecting pipe (14) on the inner wall of the housing (20). A second gear (18) meshes with one side of the first gear (17). The second gear (18) is rotatably connected to the housing (20). A rotating rod (19) is fixedly connected to the top surface of the second gear (18). The top end of the rotating rod (19) passes through the housing (20) and is rotatably connected to it. A baffle (21) is fixedly connected to the side wall of the threaded tube (15) near the top. The baffle (21) is circular and its diameter is larger than that of the threaded tube (15). The inner wall of the connecting pipe (14) is rotatably connected to a sleeve (22) near the top end. The top end of the sleeve (22) passes through the shell (20) and is rotatably connected to it. One end of the hose (13) is fixedly connected to the sleeve (22). Several adapter pipes (12) are fixedly connected to the side wall of the guide pipe (11), the hose (13) is fixedly connected to the adapter pipes (12), and each adapter pipe (12) is equipped with a control valve (23). A valve (10) is installed at the corner of the side wall of the tee pipe (9).

2. The grouting device for preventing water disasters in coal mines according to claim 1, characterized in that: The rotating rod (19) has a hexagonal cross section, and a hexagonal groove is provided on the top end face of the rotating rod (19).

3. The grouting device for preventing water disasters in coal mines according to claim 1, characterized in that: Two inclined plates (24) are fixedly connected to the top surface of the base plate (1) near the left side, and the same push rod (25) is fixedly connected between the two inclined plates (24).

4. A grouting device for preventing water disasters in coal mines according to claim 1, characterized in that: A storage box (26) is fixedly connected to the right side wall of the water tank (6), and a cover plate is fitted on the top surface of the storage box (26).

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