A coal mine floor water pressure simulation experimental device and method for karst water treatment

Abstract

The present invention provides a coal mine floor water pressure simulation experiment device and method for karst water treatment, belonging to the technical field of coal mine floor water inrush experiment. It includes a test bench and a display control system for simulation experiments, the test bench is connected with a water pressure control mechanism for monitoring and controlling water pressure, a hydraulic control mechanism for controlling the pressure on both sides and above the test bench, and the display control system is used to display experimental data and control the water pressure control mechanism and the hydraulic control mechanism; it also includes an exhaust mechanism for exhausting air when adding water and pressurizing a water tank installed on the test bench, and the exhaust mechanism is installed on the water tank. The present invention can automatically exhaust residual air during the water adding process by setting an exhaust mechanism, and can automatically close the pores as the liquid level rises; in addition, as the water pressure increases, the sealing ability can be further increased. The above structure can not only automatically exhaust air and close pores, but also enhance the sealing effect through water pressure.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine floor water inrush experiments, and in particular to a coal mine floor water pressure simulation experiment device and method for karst water treatment. Background Art

[0002] Karst water management is a complex issue involving geology, hydrology, environment and other fields. Especially in coal mining areas, the control and management of floor water pressure is particularly critical. The floor of a coal mining area refers to the rock layer below the coal seam during coal mining, especially those rock layers that may contain water. Floor water hazards refer to disasters caused by the water in the floor rock layer being affected by mining activities during coal mining, such as water inrush and water gushing. Floor water hazard prevention and control is an important part of coal mine safety production.

[0003] Coal mining floor water damage does refer to the phenomenon that the rock stratum below the coal seam is affected, causing the water under the rock stratum to gush out or protrude. Specifically, floor water damage refers to the phenomenon that during the construction and production of coal mines, groundwater rushes into the mining space, causing flooding of tunnels, working faces, mining areas, and mines. It is a sudden geological disaster in the coal mining process.

[0004] In order to ensure that the experimental device in the prior art is not affected by the long-term use of water, and the water tank of the equipment needs to be cleaned after the experiment, there will be air in the water tank after it is emptied. Secondly, there may be residual air in the pipeline during the water supply process. These air in the water tank will affect the pressurization simulation effect of the water pressure and other problems; in addition, during the simulation test, various component particles need to be added to the water to simulate the groundwater to ensure that the rock deformation and mechanical parameters of the simulated material in the fluid environment are similar. Since the sensor is located in a water-filled cavity for detection, undissolved solid particles need to be properly handled, because the undissolved solid particles will affect the fluidity and permeability of the simulated groundwater, resulting in affecting the detection structure, which is not conducive to experimental research and analysis of the device. Therefore, the present application provides a coal mine floor water pressure simulation experimental device and method for karst water management to meet the needs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a coal mine floor water pressure simulation experimental device and method for karst water management to solve the problems that there may be residual air in the water tank of the existing experimental device, and the air in the water tank will affect the pressurization simulation effect of the water pressure, and the undissolved solid particles will affect the fluidity and permeability of the simulated groundwater, resulting in affecting the detection structure, which is not conducive to the experimental research and analysis of the device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A coal mine floor water pressure simulation experiment device and method for karst water management, comprising a test bench for simulation experiments and a display control system, wherein the test bench is connected to a water pressure control mechanism for monitoring and controlling water pressure, and a hydraulic control mechanism for controlling pressure on both sides and above the test bench, and the display control system is used to display experimental data and control the water pressure control mechanism and the hydraulic control mechanism; and further comprising an exhaust mechanism for exhausting air when adding water and pressurizing a water tank installed on the test bench, wherein the exhaust mechanism is installed on the water tank.

[0008] Optionally, the exhaust mechanism includes a first fixing ring fixedly connected to the water tank and a second fixing ring fixedly connected to the water tank, a fixing tube is inserted into the first fixing ring, one side of the fixing tube is an installation area, and a sealing ring gasket is fixedly connected to the inner end peripheral side surface of the fixing tube, and a connecting pipe is fixedly connected to the outer end of the fixing tube; a through hole is provided in the sealing ring gasket, an exhaust rod is slidably inserted into the through hole, one end of the exhaust rod is fixedly connected to a sealing gasket located in the water tank, and the exhaust rod is provided with a second air hole, and the second air hole connects the water tank with the outside.

[0009] Optionally, the exhaust rod includes a first rod body and a second rod body that are screwed and fixed, and the second air holes are respectively opened in the first rod body and the second rod body.

[0010] Optionally, the peripheral edges of the sealing gasket are all bent inwards to form flanges.

[0011] Optionally, the inner end of the fixed tube is hinged with a temporary storage component that is adapted to the shape of the inner end of the fixed tube, and the temporary storage component includes a pair of second support plates, the first support plates are fixedly connected to the top of the pair of second support plates, a pressure pad is fixedly connected to the circumferential side of the first support plate, a fixing rod is rotatably connected between the pressure pad and the first support plate, and two fixing rods are relatively arranged at the inner end of the fixed tube; recesses are provided between multiple first support plates, and multiple recesses form a hollow area; circulation holes are provided on the surfaces of multiple first support plates and multiple second support plates, and the first support plates and the second support plates cooperate to form a accommodating area.

[0012] Optionally, the weight of the first support sheet and the second support sheet is greater than the weight of the pressure pad.

[0013] Optionally, a pair of the second supporting sheets are arranged opposite to each other, wherein a bracket is fixedly connected to the bottom of one of the second supporting sheets, and the bracket is in abutment with the other second supporting sheet.

[0014] Optionally, the sealing ring gasket includes a second gasket body and a first gasket body, the top of the first gasket body includes the first gasket body and a plane end, a weakened groove is provided between the first gasket body and the plane end, the second gasket body is internally connected to the first gasket body, and a surface where the second gasket body and the sealing ring gasket contact each other is provided with a wavy groove.

[0015] Optionally, a handle rod is fixedly connected to the fixed tube, a first air hole is opened in the handle rod, the first air hole and the second air hole are internally connected, a pressing rod is hinged under the handle rod, the pressing rod is hinged to the first rod body, magnets are installed in the second rod body and on the second support sheet, and the two magnets are arranged up and down and repel each other with the same polarity.

[0016] A method for a coal mine floor water pressure simulation experimental device for karst water treatment, characterized by comprising the following steps:

[0017] S1. First, hold the handle bar and press the pressing bar inwards, and then insert it into the first fixing ring;

[0018] S2. After the plug is in place, the operator releases his hand, and each component automatically resets to perform pre-fixation;

[0019] S3. After the pipeline is connected, water is added into the water tank. The air in the water tank is affected by the gradually increasing amount of water and discharged outward through the second air hole. As the liquid level in the water tank increases, the sealing gasket is gradually lifted up by the liquid level and can automatically close the air hole.

[0020] S4. When cleaning after the experiment is completed, press the push rod, which drives the exhaust rod to move upward, so that the outside world and the water tank are connected to the outside world to release the pressure.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] In the above scheme, by setting up an exhaust mechanism, a large amount of residual air can be automatically discharged during the water adding process, and the air holes can be automatically closed as the liquid level rises; in addition, as the water pressure increases, the sealing ability can be further increased to prevent a large amount of air from affecting the simulation effect in the water tank. The above structure can not only automatically discharge air and close air holes, but also enhance the sealing effect through water pressure.

[0023] By setting up a temporary storage component, the particles can be isolated to prevent melted particles from entering the water tank and affecting the simulation detection, while the melting efficiency of unmelted particles is improved, and the temporary storage component and the above-mentioned exhaust mechanism can cooperate to further improve the sealing performance.

[0024] By setting a handle rod and a pressing rod, the handle rod, the pressing rod and the temporary storage component cooperate to facilitate the rapid assembly and disassembly of the fixed pipe. At the same time, repeatedly pressing the pressing rod can make the temporary storage component repeatedly open and close to shake out the residue in the accommodating area, thereby preventing particles in the water tank from affecting the simulation effect.

[0025] By setting the first air hole in the above structure, when cleaning after the experiment is completed, the pressure can be released by pressing the pressing rod. During the exhaust before the experiment and the pressure release process after the experiment, the air is discharged outward through the second air hole and the first air hole to prevent the air flow from blowing towards the operator's face, thereby facilitating the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the coal mine floor water pressure simulation experimental device used for karst water treatment;

[0028] Figure 2 is a cross-sectional schematic diagram of a fixed pipe;

[0029] Figure 3 for Figure 1 The enlarged schematic diagram of part A in the middle;

[0030] Figure 4 for Figure 2 The enlarged schematic diagram of part B in the middle;

[0031] Figure 5 It is a cross-sectional schematic diagram of a sealing ring gasket;

[0032] Figure 6 for Figure 5 The enlarged schematic diagram of part C in the middle;

[0033] Figure 7 It is a three-dimensional schematic diagram of the sealing ring gasket;

[0034] Figure 8 is a three-dimensional schematic diagram of a sealing gasket;

[0035] Fig. 9 It is a three-dimensional schematic diagram of the temporary storage component;

[0036] Fig.10 for Fig. 9 Schematic diagram of the second perspective;

[0037] Fig.11 is a schematic cross-sectional view of a temporary storage component;

[0038] Fig.12This is a schematic diagram of the expanded state of the temporary storage component;

[0039] Fig.13 It is a three-dimensional schematic diagram of the exhaust rod.

[0040] Reference numerals:

[0041] 1. Laboratory table; 2. Water tank; 3. First fixing ring; 4. Second fixing ring; 5. Fixing tube; 6. Connecting tube; 7. Handle bar; 8. First air hole; 9. Exhaust rod; 10. Temporary storage assembly; 11. First support sheet; 12. Second support sheet; 13. Accommodation area; 14. Pressure pad; 15. Fixing rod; 16. Flanging; 17. Hollow area; 18. Sealing pad; 19. Installation area; 20. Sealing ring pad; 21. Through hole; 22. Weakened groove; 23. Second pad body; 24. Wave groove; 25. First pad body; 26. Plane end; 27. Second air hole; 28. First rod body; 29. ​​Second rod body; 30. Magnet; 31. Press rod; 32. Bracket; 33. Flow hole.

[0042] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0043] The following is a detailed description of a coal mine floor water pressure simulation experiment device and method for karst water treatment provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0044] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0045] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0046] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0047] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0048] like Figures 1 to 13 As shown, the embodiment of the present invention provides a coal mine floor water pressure simulation experiment device and method for karst water treatment, including a test bench 1 for simulation experiment and a display control system, the test bench 1 is connected with a water pressure control mechanism for monitoring and controlling water pressure, and a hydraulic control mechanism for controlling pressure on both sides and above the test bench 1, and the display control system is used to display experimental data and control the water pressure control mechanism and the hydraulic control mechanism, and the above mechanisms are all prior art and will not be described in detail here;

[0049] It also includes an exhaust mechanism for exhausting air when water is added and pressurized into a water tank 2 installed on the experimental table 1, and the exhaust mechanism is installed on the water tank 2.

[0050] like Figures 2 to 8As shown, the exhaust mechanism includes a first fixing ring 3 fixedly connected to the water tank 2 and a second fixing ring 4 fixedly connected to the water tank 2, a fixing tube 5 is inserted on the first fixing ring 3, one side of the inner end of the fixing tube 5 is concave inward to form an installation area 19, and a sealing ring gasket 20 is fixedly connected to the circumferential side of the inner end of the fixing tube 5, and a connecting pipe 6 is fixedly connected to the outer end of the fixing tube 5, and the connecting pipe 6 is connected to the pressure control mechanism; a through hole 21 is provided in the sealing ring gasket 20, and an exhaust rod 9 is slidably inserted in the through hole 21, and one end of the exhaust rod 9 is fixedly connected to a sealing gasket 18 located in the water tank 2, and a second air hole 27 is provided on the exhaust rod 9, and the second air hole 27 connects the water tank 2 with the outside, wherein the sealing gasket 18 is made of rubber and is located at the inner end of the exhaust rod 9, the inner end of the exhaust rod 9 slides in the through hole 21, and the outer end of the exhaust rod 9 is located outside the fixed tube 5, and the second air hole 27 Located on one side of the exhaust rod 9, when the exhaust rod 9 moves downward, the water tank 2 is connected to the outside through the second air hole 27, and when the exhaust rod 9 moves upward, the second air hole 27 is closed by the side wall of the through hole 21; when water is added to the water tank 2 after the pipeline connection is completed, the air in the water tank 2 is affected by the gradually increasing water and discharged outward through the second air hole 27, and as the liquid level in the water tank 2 increases, the sealing gasket 18 is gradually lifted up by the liquid level. During this process, the sealing gasket 18 drives the exhaust rod 9 to move upward, thereby achieving the discharge of residual air during the water adding process, and the air hole can be automatically closed as the liquid level rises; in addition, as the sealing gasket 18 is gradually affected by the water pressure, the rubber sealing gasket 18 is deformed by the water pressure, so that it can better fit the sealing ring gasket 20, thereby achieving the effect of further increasing the sealing ability by using the water pressure.

[0051] like Figures 4 to 8As shown, the sealing ring gasket 20 includes a second gasket body 23 and a first gasket body 25 made of rubber. A hard tube is fixedly connected to the inner wall of the through hole 21, the purpose of which is to prevent the second gasket body 23 from affecting the blocking of the second air hole 27 when it is deformed. The top of the first gasket body 25 includes the first gasket body 25 and a plane end 26. A weakening groove 22 is between the first gasket body 25 and the plane end 26. The function of the weakening groove 22 is to weaken the connection between the first gasket body 25 and the second gasket body 23. When the fixed tube 5 is inserted, the second gasket body 23 and the first gasket body 25 are squeezed and bent, so as to facilitate the insertion of the fixed tube 5. The second gasket body 23 and the first gasket body 25 are internally connected. A wave groove 24 is provided on a surface where the second gasket body 23 and the sealing ring gasket 20 contact each other, wherein the wave grooves on the surfaces of the second gasket body 23 and the sealing ring gasket 20 are The sizes of the grooves 24 are adapted to each other, so that they can fit better when fitted, thereby improving the sealing effect. In addition, another function of the first pad body 25 and the second pad body 23 is that when the fixing tube 5 is inserted into the first fixing ring 3, the first pad body 25 in the sealing ring gasket 20 contacts the inside of the first fixing ring 3. Since the second pad body 23 is connected to the inside of the first pad body 25 and has air inside, when the sealing gasket 18 is deformed by the water pressure, the second pad body 23 will also be deformed, and the air inside it will be squeezed to the first pad body 25, causing the first pad body 25 to expand, thereby making the first fixing ring 3 and the first pad body 25 more tightly connected, and the water pressure can be used to improve the sealing. The function of the flat end 26 is to increase the contact area, so that the second pad body 23 can better fit the first fixing ring 3 when it is squeezed.

[0052] like Figure 8 As shown, the edges around the sealing gasket 18 are bent inward to form a flange 16. By setting the flange 16 around the sealing gasket 18, when the sealing gasket 18 and the sealing ring gasket 20 are fitted together, the sealing gasket 18 and the flange 16 are an integrated structure, and its function is similar to the sealing ring on the toilet plug, so that the sealing gasket 18 can be better adsorbed on the surface of the sealing ring gasket 20.

[0053] like Fig.13 As shown, the exhaust rod 9 includes a first rod body 28 and a second rod body 29 that are screwed and fixed, and the second air hole 27 is respectively opened in the first rod body 28 and the second rod body 29, wherein the first rod body 28 is inserted into the second rod body 29, and the second air hole 27 opened in the first rod body 28 and the second rod body 29 is in a connected state. By setting the first rod body 28 and the second rod body 29, the overall length of the exhaust rod 9 can be adjusted by rotating the first rod body 28 during use. The advantage of such a setting is that when the exhaust rod 9 is longer, the sealing gasket 18 will be affected by the liquid level in advance and closed, and when the exhaust rod 9 is shorter, the sealing gasket 18 will be delayed in being affected by the liquid level, so that the length of the exhaust rod 9 can be adjusted according to current needs during actual operation.

[0054] like Figures 9 to 12 As shown, the inner end of the fixed tube 5 is hinged with a temporary storage component 10 adapted to the shape of the inner end of the fixed tube 5, and the temporary storage component 10 includes a pair of second support sheets 12, and the first support sheets 11 are fixedly connected to the upper part of the pair of second support sheets 12, and the pressure pads 14 are fixedly connected to the side of the first support sheets 11, and the pressure pads 14 and the first support sheets 11 are rotatably connected with fixed rods 15, and the two fixed rods 15 are relatively arranged at the inner end of the fixed tube 5; a plurality of first support sheets 11 are each provided with a notch, and a plurality of notches form a hollow area 17, and a plurality of second support sheets 11 are provided with a plurality of notches. A flow hole 33 is formed on the surface of each of the first support sheet 11 and the second support sheets 12, and the first support sheet 11 and the second support sheet 12 cooperate to form a receiving area 13, wherein the first support sheet 11 is located above the second support sheet 12, and the receiving area 13 is formed between the first support sheet 11 and the second support sheet 12, and the first support sheet 11 is inclined toward the hollow area 17, and the second support sheets 12 form a conical structure, and the sharp end of the conical structure is located in the middle of the hollow area 17. Since the weight of the first support sheet 11 and the second support sheet 12 is greater than the weight of the pressure pad 14, In the default state, the first support sheet 11 and the second support sheet 12 are in a closed state. The closed first support sheet 11, the second support sheet 12 and the pressure pad 14 form a temporary storage component 10. In the default state, the temporary storage component 10 is located in the fixed pipe 5. During the water delivery process, the unmelted particles in the water first fall on the inclined first support sheet 11 and move downward along the inclined first support sheet 11. In this process, the unmelted particles pass through the multiple flow holes 33 on the surface of the first support sheet 11, thereby rubbing the particles, which is conducive to melting the particles. The unmelted particles follow the guidance of the conical structure and enter the edge of the containing area 13 to prevent the particles from affecting the water circulation. When the water flows through the first support sheet 11 and the second support sheet 12, it will flush the particles in the containing area 13, thereby further improving the melting efficiency. The temporary storage component 10 can also isolate the particles to prevent the melted particles from entering the water tank 2 and affecting the simulation detection; in addition, when the pressure pad 14 is subjected to water pressure, it is more tightly connected to the sealing ring gasket 20, further improving the sealing effect.

[0055] like Fig.10 As shown, a pair of the second support pieces 12 are arranged opposite to each other, wherein a bracket 32 ​​is fixedly connected to the bottom of one of the second support pieces 12, and the bracket 32 ​​is in contact with the other second support piece 12. By setting the bracket 32 ​​with a U-shaped structure on one of the second support pieces 12, the bracket 32 ​​on one of the second support pieces 12 is located below the other second support piece 12. When the second support piece 12 with the bracket 32 ​​rotates upward, the bracket 32 ​​thereon contacts with the other second support piece 12, so that both second support pieces 12 are flipped upward.

[0056] like Figure 3 and Fig.13As shown, the fixed tube 5 is fixedly connected with a handle rod 7, a first air hole 8 is opened in the handle rod 7, the first air hole 8 is connected to the inside of the second air hole 27, a pressing rod 31 is hinged under the handle rod 7, the pressing rod 31 is hinged to the first rod body 28, magnets 30 are installed in the second rod body 29 and on the second support sheet 12, the two magnets 30 are arranged up and down and repel each other with the same polarity, by setting the handle rod 7 and the pressing rod 31, during the installation process, the handle rod 7 is held and the pressing rod 31 is pressed inwardly. Due to the effect of the hinge, when the outer end of the pressing rod 31 is pressed inwardly, the inner end of the pressing rod 31 will move downward, so that the exhaust rod 9 moves downward. When the exhaust rod 9 moves downward and is connected to the second support sheet 12, the exhaust rod 9 moves downward. When the sheets 12 gradually approach, the repulsive force of the magnet will push the first sheet 11 and the second sheet 12 in the closed state to unfold. When the operator releases his hand, each component will automatically reset, making the assembly and disassembly of the fixing tube 5 in the first fixing ring 3 more convenient. At the same time, repeatedly pressing the pressing rod can make the temporary storage component repeatedly open and close, so as to shake out the residue in the accommodating area 13 during cleaning. In addition, when cleaning after the experiment is completed, the pressure can be released by pressing the pressing rod 31. During the exhaust before the experiment and the pressure relief process after the experiment, the air is discharged outward through the second air hole 27 and the first air hole 8 to prevent the air flow from blowing towards the operator's face, thereby facilitating the experiment.

[0057] A method for a coal mine floor water pressure simulation experimental device for karst water treatment, characterized by comprising the following steps:

[0058] S1, first hold the handle bar 7 and press the pressing rod 31 inwards, and then insert it into the first fixing ring;

[0059] S2. After the plug is in place, the operator releases his hand, and each component automatically resets to perform pre-fixation;

[0060] S3, after the pipeline is connected, water is added into the water tank 2, and the air in the water tank 2 is affected by the gradually increasing water and discharged outward through the second air hole 27. As the liquid level in the water tank 2 increases, the sealing gasket 18 is gradually lifted up by the liquid level and can automatically close the air hole;

[0061] S4. When cleaning is performed after the experiment is completed, the pressing rod 31 is pressed, and the pressing rod 31 drives the exhaust rod to move upward, so that the outside world and the water tank are connected to the outside world to release the pressure.

[0062] The working principle of the technical solution provided by the present invention is as follows:

[0063] When in use, hold the handle rod 7 and press the pressing rod 31 inwards. At the same time, the inner end of the pressing rod 31 drives the exhaust rod 9 to move downward. When the exhaust rod 9 moving downward gradually approaches the second support piece 12, the repulsive force of the magnet will push the first support piece 11 and the second support piece 12 in the closed state to unfold. After being plugged into place, the operator releases his hands, and each component will automatically reset due to gravity, so that the first support piece 11 and the second support piece 12 are closed, and the pressure pad 14 at one end of the first support piece 11 and the second support piece 12 contacts the inner end of the first fixing ring 3, thereby pre-fixing, making the assembly and disassembly of the fixing tube 5 in the first fixing ring 3 more convenient.

[0064] When water is added to the water tank 2 after the pipeline connection is completed, the air in the water tank 2 is affected by the gradually increasing water and discharged outward through the second air hole 27. As the liquid level in the water tank 2 increases, the sealing gasket 18 is gradually lifted up by the liquid level and can automatically close the air hole.

[0065] During the water delivery process, the unmelted particles in the water first fall on the inclined first support sheet 11 and move downward along the inclined first support sheet 11. During this process, the unmelted particles pass through the multiple flow holes 33 on the surface of the first support sheet 11, thereby rubbing the particles, which is conducive to melting the particles. The unmelted particles follow the guidance of the conical structure and enter the edge of the containing area 13 to prevent the particles from affecting the water circulation. When the water flows through the first support sheet 11 and the second support sheet 12, it will flush the particles in the containing area 13, thereby further improving the melting efficiency. The temporary storage component 10 can also isolate the particles to prevent the melted particles from entering the water tank 2 and affecting the simulation detection.

[0066] When cleaning after the experiment is completed, the pressure can be released by pressing the pressing rod 31. During the exhaust before the experiment and the pressure release after the experiment, the air is discharged outward through the second air hole 27 and the first air hole 8 to prevent the air flow from blowing towards the operator's face, thereby facilitating the experiment.

[0067] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A coal mine floor water pressure simulation experimental device for karst water treatment, characterized in that: It includes a test bench for simulation experiments and a display control system, wherein the test bench is connected with a water pressure control mechanism for monitoring and controlling water pressure, and a hydraulic control mechanism for controlling pressure on both sides and above the test bench, and the display control system is used to display experimental data and control the water pressure control mechanism and the hydraulic control mechanism; It also includes an exhaust mechanism for exhausting air when adding water and pressurizing the water tank installed on the experimental table, and the exhaust mechanism is installed on the water tank; The exhaust mechanism comprises a first fixing ring fixedly connected to the water tank and a second fixing ring fixedly connected to the water tank, a fixing pipe is plugged into the first fixing ring, one side of the fixing pipe is a mounting area, a sealing ring gasket is fixedly connected to the inner end circumferential side surface of the fixing pipe, and a connecting pipe is fixedly connected to the outer end of the fixing pipe; A through hole is provided in the sealing ring gasket, an exhaust rod is slidably inserted into the through hole, one end of the exhaust rod is fixedly connected to a sealing gasket located in the water tank, and a second air hole is provided in the exhaust rod, which connects the water tank with the outside.

2. The coal mine floor water pressure simulation experimental device for karst water treatment according to claim 1 is characterized in that: The exhaust rod comprises a first rod body and a second rod body that are screwed and fixed, and the second air holes are respectively opened in the first rod body and the second rod body.

3. The coal mine floor water pressure simulation experimental device for karst water treatment according to claim 2 is characterized in that: The edges around the sealing pad are all bent inwards to form flanges.

4. The coal mine floor water pressure simulation experimental device for karst water treatment according to claim 2 is characterized in that: The inner end of the fixed tube is hinged with a temporary storage component adapted to the shape of the inner end of the fixed tube, and the temporary storage component includes a pair of second supporting plates, the upper part of the pair of second supporting plates is fixedly connected to the first supporting plate, the peripheral side of the first supporting plate is fixedly connected to a pressure pad, and the pressure pad and the first supporting plate are rotatably connected to a fixed rod, and the two fixed rods are relatively arranged at the inner end of the fixed tube; Notches are provided between the first supporting sheets, the notches form a hollow area, the surfaces of the first supporting sheets and the second supporting sheets are provided with flow holes, and the first supporting sheets and the second supporting sheets cooperate to form a containing area.

5. The coal mine floor water pressure simulation experimental device for karst water treatment according to claim 4 is characterized in that: The weight of the first support sheet and the second support sheet is greater than the weight of the pressure pad.

6. The coal mine floor water pressure simulation experimental device for karst water treatment according to claim 5 is characterized in that: A pair of the second supporting sheets are arranged opposite to each other, wherein a bracket is fixedly connected to the bottom of one of the second supporting sheets, and the bracket is in abutment with the other second supporting sheet.

7. The coal mine floor water pressure simulation experimental device for karst water treatment according to claim 2 is characterized in that: The sealing ring gasket includes a second gasket body and a first gasket body, the top of the first gasket body includes the first gasket body and a plane end, a weakened groove is provided between the first gasket body and the plane end, the second gasket body is internally connected to the first gasket body, and a surface where the second gasket body and the sealing ring gasket contact each other is provided with a wave groove.

8. The coal mine floor water pressure simulation experimental device for karst water treatment according to claim 6 is characterized in that: A handle bar is fixedly connected to the fixed tube, a first air hole is opened in the handle bar, the first air hole is internally connected to the second air hole, a pressing rod is hinged under the handle bar, the pressing rod is hinged to the first rod body, magnets are installed in the second rod body and on the second support sheet, the two magnets are arranged up and down and repel each other with the same polarity.

9. The method of the coal mine floor water pressure simulation test device for karst water treatment according to claim 8, characterized in that: The following steps are involved: S1. First, hold the handle bar and press the pressing bar inwards, and then insert it into the first fixing ring; S2. After the plug is in place, the operator releases his hand, and each component automatically resets and is pre-fixed; S3. After the pipeline is connected, water is added into the water tank. The air in the water tank is affected by the gradually increasing amount of water and discharged outward through the second air hole. As the liquid level in the water tank increases, the sealing gasket is gradually lifted up by the liquid level and can automatically close the air hole. S4. When cleaning after the experiment is completed, press the push rod, which drives the exhaust rod to move upward, so that the outside world and the water tank are connected to the outside world to release the pressure.

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