Intelligent sensing monitoring bentonite combination permeability testing device and testing method thereof

Abstract

The invention relates to the technical field of permeability detection, in particular to an intelligent sensing and monitoring bentonite combination permeability testing device and a testing method thereof.The intelligent sensing and monitoring bentonite combination permeability testing device comprises a pressurizing device, and an intelligent detection unit is arranged in the pressurizing device; an end cover, a first permeable stone and a second permeable stone are detachably mounted on the detection cylinder body; the guide assembly can drive the end cover to perform transverse movement and lifting actions, and when the end cover performs the lifting action, the filler in the detection cylinder body can be compacted; the top pipe can be inserted into the detection cylinder body; the magnetic attraction assembly is provided with a second convex shaft, the second convex shaft is matched with a side frame arranged on the guide assembly, and the height of the end cover can be locked after the end cover is closed; the jacking and extending structure is arranged on the side portion of the detection cylinder body and connected with the jacking pipe, a pressing rod connected with the guiding assembly can drive the jacking and extending structure to act after the height of the end cover is locked, so that the jacking pipe is inserted into the detection cylinder body, and the detection period is shortened.

Description

Technical Field

[0001] This invention relates to the field of permeability testing technology, specifically to an intelligent sensing and monitoring device and method for testing the permeability of bentonite assemblies. Background Technology

[0002] In the fields of geotechnical engineering and environmental geotechnical engineering, bentonite and its compositions are widely used in seepage barriers, waste storage, and other projects due to their extremely low permeability. Accurately determining their permeability coefficient is crucial for evaluating their long-term seepage prevention performance and safety.

[0003] Traditional indoor permeation testing devices, such as flexible wall permeameters, while capable of accurate detection through intelligent sensing, still suffer from inherent limitations that affect efficiency and accuracy. Firstly, sample preparation and installation largely rely on manual operation. Particularly in the process of loading permeable stones and samples into the testing cylinder and ensuring accurate sealing of the end caps, repeatability and accuracy are difficult to guarantee each operation. Misalignment of the end caps with the cylinder or incomplete sealing can lead to pressure leakage, affecting the reliability of the test results. Secondly, to simulate actual engineering stress states, samples need to be uniformly compacted to a predetermined density before testing. Traditional methods begin a lengthy saturation and permeation process immediately after compaction, resulting in a slow saturation rate and significantly extending the entire testing cycle. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent sensing and monitoring device and method for testing the permeability of bentonite composites, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A smart sensing and monitoring device for testing the permeability of bentonite assemblies includes:

[0007] A pressurizing device, wherein the pressurizing device has a built-in intelligent detection unit, which is used to weigh the permeated solution;

[0008] A detection cylinder is mounted on the pressurizing device, and an end cap, a first permeable stone, and a second permeable stone are detachably mounted on the detection cylinder.

[0009] A guide assembly is installed on the pressurizing device and connected to the end cap. The guide assembly can drive the end cap to perform lateral and lifting movements. When the end cap performs lifting movements, it can compact the packing placed in the detection cylinder.

[0010] Multiple sets of top tubes are arranged equidistantly around the circumference, and the top tubes can be inserted into the detection cylinder.

[0011] A magnetic suction assembly is connected to the guide assembly. The magnetic suction assembly is provided with a second convex shaft. The second convex shaft cooperates with a side bracket provided on the guide assembly, which can lock the height of the end cover after the end cover is closed.

[0012] A top extension structure is disposed on the side of the detection cylinder and connected to the top tube. The pressure rod connected to the guide assembly can drive the top extension structure to move so that the top tube is inserted into the detection cylinder after the end cap height is locked.

[0013] The intelligent sensing and monitoring bentonite composite permeability testing device described above includes the following guiding components:

[0014] A support plate fixedly installed on the pressurizing device, the support plate being provided with guide grooves;

[0015] A sliding plate is slidably mounted on the support plate, and the sliding plate is connected to the support plate by a first columnar spring. A first inclined groove is provided on the sliding plate.

[0016] A drive structure connecting the sliding plate is provided with a roller on its side, and the roller can roll in the guide groove and the first inclined groove.

[0017] The intelligent sensing and monitoring bentonite composite permeability testing device described above: the guide groove includes a first horizontal groove and a first vertical groove disposed on the support plate, the first horizontal groove and the first vertical groove being connected and perpendicular to each other.

[0018] The intelligent sensing and monitoring bentonite composite permeability testing device described above: the driving structure includes a guide frame connected to the sliding plate, a guide shaft is provided on the guide frame, and a connecting frame fixedly connected to the end cap is slidably mounted on the guide shaft;

[0019] The drive structure also includes a lifting frame that slides through the guide frame, an electric telescopic rod that is rotatably mounted on the lifting frame, and the end of the electric telescopic rod away from the lifting frame that is rotatably connected to the pressurizing device.

[0020] The intelligent sensing and monitoring bentonite composite permeability testing device described above: the magnetic suction component includes a horizontal component fixedly connected to the connecting frame and a horizontal sliding plate slidably mounted on the horizontal component, the horizontal sliding plate and the horizontal component being connected by a neodymium magnet;

[0021] The second cam is rotatably mounted on the transverse plate.

[0022] The intelligent sensing and monitoring bentonite composite permeability testing device described above: a first convex shaft is rotatably mounted on the transverse plate, and the first convex shaft abuts and adapts to the inclined surface located at the lower end of the lifting frame.

[0023] The intelligent sensing and monitoring bentonite composite permeability testing device described above: the side frame is fixedly installed on the support plate, and the support plate is provided with a relief groove. When the second convex shaft enters the relief groove, the first convex shaft can separate from the inclined surface.

[0024] The intelligent sensing and monitoring bentonite composite permeability testing device described above: the top extension structure includes a follower frame slidably installed on the side of the detection cylinder, and the follower frame is provided with a second inclined groove;

[0025] The top extension structure also includes a support plate disposed on the side of the follower frame, and the support plate has a second horizontal groove along its length.

[0026] A third convex shaft is rotatably mounted on one end of the top pipe, and the third convex shaft can roll in the second inclined groove and the second horizontal groove.

[0027] The intelligent sensing and monitoring bentonite composite permeability testing device described above: the top extension structure further includes a collar sleeved on the side of the detection cylinder, the collar being connected to the detection cylinder via a second cylindrical spring;

[0028] The follower frame is also provided with a second vertical groove, and the guide block provided on the support plate can slide in the second vertical groove.

[0029] A method for testing bentonite assemblies using the aforementioned intelligent sensing and monitoring bentonite assembly permeability testing device includes the following steps:

[0030] Step 1: Apply a thin layer of petroleum jelly to the inner wall of the test cylinder and the sides of the first and second permeable stones;

[0031] Step 2: Install the second permeable stone into the testing tank, then lay a layer of filter paper on the second permeable stone, and finally pour the packing into the testing tank;

[0032] Step 3: Place the moistened filter paper on top of the packing material and start the guiding assembly;

[0033] Step 4: The guide component drives the end cap to move laterally until it is coaxial with the detection cylinder and then moves toward the detection cylinder. The first permeable stone is used to compact the packing. The thickness of the packing after compaction is 30mm.

[0034] Step 5: After the packing is compacted, the lifting frame will drive the second convex shaft into the relief groove, and then guide the assembly to continue moving, driving the pressure rod to act on the top extension structure so that the jacking pipe is inserted into the packing;

[0035] Step 6: The pressurizing device delivers solution toward the jacking pipe to pre-wet the packing material. Then, the pressurizing device stops delivering solution toward the jacking pipe and delivers 200 mL of solution toward the top of the first permeable stone, while simultaneously pressurizing to 60 kPa.

[0036] Step 7: The solution passing through the packing material is collected, and the mass of the solution is weighed by the intelligent detection unit.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] The magnetic suction components, side frames, and top extension structure ensure that the compaction of the bentonite composition and the insertion of the jacking pipe are carried out in steps. This ensures that the jacking pipe is inserted only after the bentonite composition is compacted, preventing premature insertion from negatively impacting the compaction of the bentonite composition, thus improving the compaction degree and detection accuracy. On the other hand, when the jacking pipe is inserted into the compacted bentonite composition, the solution pre-wets the bentonite composition, increasing the wetting speed and shortening the detection cycle.

[0039] The guide components allow the end cap to move laterally and vertically sequentially under the guidance of the first horizontal and vertical grooves. This ensures that the end cap maintains axial misalignment with the detection cylinder in the initial state, making it easier for operators to place the second permeable stone and bentonite composition into the detection cylinder. Furthermore, it guarantees the accuracy of the end cap's stroke, ensuring that the end cap moves towards the detection cylinder only after it is coaxial with it, resulting in a better seal when they are in contact, thus guaranteeing detection accuracy. In addition, the lateral and vertical movements are performed in absolute sequence during the operation of the electric telescopic rod, ensuring the accuracy of the end cap's movement timing and avoiding the situation where multiple sets of electric telescopic rods have timing errors that prevent the end cap from closing onto the detection cylinder. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a bentonite composite permeability testing device for intelligent sensing and monitoring.

[0041] Figure 2 This is a schematic diagram of the guiding component, magnetic suction component, and top extension structure in an intelligent sensing and monitoring bentonite composite permeability testing device.

[0042] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0043] Figure 4 This is a schematic diagram of the guiding component in an intelligent sensing and monitoring device for testing the permeability of bentonite composites.

[0044] Figure 5 This is an exploded view of the magnetic suction component in an intelligent sensing and monitoring device for testing the permeability of bentonite composites.

[0045] Figure 6 This is an exploded view of a portion of the guiding component in an intelligent sensing and monitoring device for testing the permeability of bentonite assemblies.

[0046] Figure 7 The diagram shows the structural state of the lifting frame, magnetic suction component, and side frame under different conditions in the intelligent sensing and monitoring bentonite composite permeability testing device.

[0047] Figure 8 This is a schematic diagram of the detection cylinder, the second permeable stone, and the apical extension structure in a bentonite composite permeability testing device for intelligent sensing and monitoring.

[0048] Figure 9 This is an exploded view of the apical structure in an intelligent sensing and monitoring device for testing the permeability of bentonite composites.

[0049] In the diagram: 1. Pressurizing device; 2. Support plate; 201. First horizontal groove; 202. First vertical groove; 3. Sliding plate; 301. First inclined groove; 4. Guide frame; 5. Guide shaft; 6. Connecting frame; 7. End cap; 8. First permeable stone; 9. Detection cylinder; 10. Second permeable stone; 11. Roller; 12. Horizontal component; 13. Horizontal plate; 14. First convex shaft; 15. Second convex shaft; 16. Neodymium magnet; 7. First cylindrical spring; 18. Lifting frame; 1801. Inclined surface; 19. Electric telescopic rod; 20. Side frame; 2001. Clearance groove; 21. Collar; 22. Second cylindrical spring; 23. Follower frame; 2301. Second inclined groove; 2302. Second vertical groove; 24. Jacking pipe; 2401. Third convex shaft; 25. Support plate; 2501. Second horizontal groove; 2502. Guide block; 26. Pressure rod. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0051] Please see Figures 1-9 As an embodiment of the present invention, the intelligent sensing and monitoring bentonite composite permeability testing device includes: a pressurizing device 1, a detection cylinder 9, a guiding component, a jacking pipe 24, a magnetic suction component, and a jacking structure.

[0052] The pressurization device 1 has a built-in intelligent detection unit, which is used to weigh the permeated solution;

[0053] The detection cylinder 9 is mounted on the pressurizing device 1. An end cap 7, a first permeable stone 8, and a second permeable stone 10 are detachably mounted on the detection cylinder 9. The first permeable stone 8 is fixedly connected to the end cap 7.

[0054] In this embodiment, before testing, the second permeable stone 10 needs to be installed, and a layer of filter paper needs to be laid on the second permeable stone 10. Then, the bentonite composition to be tested is poured onto the filter paper, and another layer of moistened filter paper is laid on top. Then, the first permeable stone 8 is placed on the bentonite composition to compact it. Then, the end cap 7 is put on so that the solution in the test cylinder 9 above the first permeable stone 8 can pass through the first permeable stone 8, the bentonite composition, and the second permeable stone 10 in sequence. The permeability of the bentonite composition is calculated by detecting the amount of solution that has passed through.

[0055] It should be noted that two channels are provided on the end cap 7. Both channels are connected to the pressurizing device 1. One channel is used for adding solution, and the other channel is used for venting or pressurizing. When adding solution, the channel used for venting is opened. At this time, the pressurizing device 1 can pump the solution into the detection cylinder 9. After the solution is added to 200mL, the channel for delivering the solution is closed. At the same time, the pressurizing device 1 pressurizes the detection cylinder 9 through another set of channels to keep the air pressure at the top of the detection cylinder 9 at 60kPa.

[0056] Please see Figure 2 , Figures 4-6 The guiding assembly is mounted on the pressurizing device 1 and connected to the end cap 7. The guiding assembly can drive the end cap 7 to perform lateral and vertical movements. When the end cap 7 performs vertical movements, it can compact the packing material placed in the detection cylinder 9. The guiding assembly includes:

[0057] A support plate 2 is fixedly installed on the pressurizing device 1. The support plate 2 is provided with a guide groove, which includes a first horizontal groove 201 and a first vertical groove 202. The first horizontal groove 201 and the first vertical groove 202 are connected and perpendicular to each other. The first horizontal groove 201 and the first vertical groove 202 guide the movement of the end cover 7, enabling the end cover 7 to perform lateral and lifting movements during movement. When the end cover 7 moves laterally, it can be axially misaligned with the detection cylinder 9, so that the top of the detection cylinder 9 can be fully exposed, making it easier to put in the second permeable stone 10 and the bentonite composition. When the end cover 7 lifts, it can drive the first permeable stone 8 towards the detection cylinder 9. When the first permeable stone 8 is pressed onto the bentonite composition, it can compact the bentonite composition. When the end cover 7 is closed on the detection cylinder 9, it can seal the inside of the detection cylinder 9.

[0058] It should also be noted that, in order to ensure the uniformity of the thickness of the bentonite composition after compaction, when pouring the bentonite composition onto the second permeable stone 10, the bentonite composition needs to be spread evenly so that when the second permeable stone 10 acts on the bentonite composition to compact it, the thickness of the compacted bentonite composition will be more uniform.

[0059] A sliding plate 3 is slidably mounted on the support plate 2. The sliding plate 3 is connected to the support plate 2 by a first columnar spring 17. A first inclined groove 301 is provided on the sliding plate 3.

[0060] The drive structure is connected to the sliding plate 3. A roller 11 is provided on the side of the drive structure. The roller 11 can roll in the guide groove and the first inclined groove 301. The drive structure includes a guide frame 4 connected to the sliding plate 3. A guide shaft 5 is provided on the guide frame 4. A connecting frame 6 fixedly connected to the end cover 7 is slidably installed on the guide shaft 5. The guide shaft 5 and the guide frame 4 are slidably connected, so that the guide shaft 5 has a guiding effect on the guide frame 4. The end cover 7 and the guide frame 4 are in a fixed connection state, so that its orientation is constant during the movement of the end cover 7. This ensures that after the end cover 7 moves to the predetermined position, it remains coaxial with the detection cylinder 9. As the end cover 7 moves toward the detection cylinder 9, it can smoothly cover the upper part of the detection cylinder 9, thereby ensuring the sealing of the inside of the detection cylinder 9.

[0061] The drive structure also includes a lifting frame 18 that slides through the guide frame 4. An electric telescopic rod 19 is rotatably mounted on the lifting frame 18. One end of the electric telescopic rod 19 away from the lifting frame 18 is rotatably connected to the pressurizing device 1. The electric telescopic rod 19 is inclined.

[0062] In this embodiment, the angle formed between the electric telescopic rod 19 and the support plate 2 toward the pressurizing device 1 is an acute angle. This allows the electric telescopic rod 19 to exert a downward tilting force on the magnetic suction assembly when it moves. This downward tilting force causes the magnetic suction assembly to generate a horizontal component force and a vertical component force. In the initial state, the roller 11 is in the state where the first horizontal groove 201 is away from the vertical groove 202, so that the roller 11 can move along the length direction of the first horizontal groove 201 under the action of the horizontal component force. That is, in this state, the end cover 7 will move laterally. When the roller 11 moves to the end of the first horizontal groove 201, the end cover 7 and the detection cylinder 9 are in a coaxial state. At this time, the electric telescopic rod 19 will continue to drive the magnetic suction assembly to move, so that the roller 11 can move along the first vertical groove 202. During this process, the end cover 7 moves vertically and drives the first permeable stone 8 toward the bentonite composition, thereby achieving the compaction of the bentonite composition.

[0063] Based on the above configuration, the end cap 7 can move laterally and vertically in sequence under the guidance of the first horizontal groove 201 and the first vertical groove 202. This ensures that the end cap 7 can maintain axial misalignment with the detection cylinder 9 in the initial state, making it easier for the operator to place the second permeable stone 10 and bentonite composition into the detection cylinder 9. On the other hand, it ensures the accuracy of the stroke movement of the end cap 7, ensuring that the end cap 7 moves towards the detection cylinder 9 only after it is coaxial with the detection cylinder 9, thus providing better sealing when the two are in contact and ensuring detection accuracy. In addition, when the electric telescopic rod 19 is activated, the above-mentioned lateral and vertical movements are performed in absolute sequence, ensuring the accuracy of the timing of the movement of the end cap 7. This avoids the situation where the end cap 7 cannot be closed onto the detection cylinder 9 due to the timing error of each electric telescopic rod 19 when multiple sets of electric telescopic rods 19 are used.

[0064] Furthermore, during the movement of roller 11 along the first horizontal groove 201 and the first vertical groove 202, roller 11 will also move along the first inclined groove 301. During this process, sliding plate 3 will move along the length of support plate 2 and stretch the first columnar spring 17. This allows the first columnar spring 17 to store elastic potential energy. When the electric telescopic rod 19 drives the magnetic attraction assembly to reset, the elastic potential energy released by the first columnar spring 17 can pull the end cover 7 back to its original position, ensuring the accuracy of the initial position of the end cover 7 during the cyclic use of the device.

[0065] Please see Figures 3-5 , Figure 7The magnetic suction assembly is connected to the guide assembly. The magnetic suction assembly is provided with a second protruding shaft 15. The second protruding shaft 15 cooperates with the side frame 20 provided on the guide assembly, so that the end cover 7 can be locked in height after the end cover 7 is closed.

[0066] The magnetic attraction assembly includes a horizontal member 12 fixedly connected to the connecting frame 6 and a horizontal sliding plate 13 slidably mounted on the horizontal member 12. The horizontal sliding plate 13 and the horizontal member 12 are connected by a neodymium magnet 16.

[0067] The second convex shaft 15 is rotatably mounted on the transverse plate 13;

[0068] A first convex shaft 14 is rotatably mounted on the transverse plate 13. The first convex shaft 14 abuts and is adapted to the inclined surface 1801 located at the lower end of the lifting frame 18. The side frame 20 is fixedly mounted on the support plate 2, and the support plate 2 is provided with a relief groove 2001. When the second convex shaft 15 enters the relief groove 2001, the first convex shaft 14 can separate from the inclined surface 1801.

[0069] In this embodiment, the neodymium magnets 16 disposed on the horizontal plate 13 and the horizontal member 12 are in abutting state, and in the initial state, the inclined surface 1801 is in abutting state against the first convex shaft 14. When the electric telescopic rod 19 drives the lifting frame 18 to move, the lifting frame 18 will be subjected to the above-mentioned horizontal component force and vertical component force. Since the inclined surface 1801 is in abutting state against the first convex shaft 14, and the neodymium magnets 16 disposed on the horizontal plate 13 and the horizontal member 12 are in abutting state, the vertical component force is canceled out. At this time, the lifting frame 18 will act on the first convex shaft 14, and drive the roller 11 to move sequentially along the first horizontal groove 201 and the first vertical groove 202 while keeping the horizontal plate 13 and the horizontal member 12 relatively stationary.

[0070] When the roller 11 moves into the vertical groove 202, the second convex shaft 15 is in contact with the side of the side frame 20. At this time, the first permeable stone 8 can act on the bentonite composition to compress it. At this time, the first permeable stone 8 will also be subjected to a reaction force. Under the action of the reaction force, the transverse plate 13 tends to separate from the transverse frame 12. However, since the second convex shaft 15 is in contact with the side frame 20, the transverse plate 13 is still in a relatively stationary state with the transverse plate 12. At this time, the first convex shaft 14 is still in contact with the inclined surface 1801. This can ensure the extrusion force on the bentonite composition during the pressing of the first permeable stone 8, thereby better compacting the bentonite composition.

[0071] During the compaction of the bentonite composition by the first permeable stone 8, the second convex shaft 15 is in a rolling contact with the side of the side frame 20. When the bentonite composition is compacted to the predetermined state, the second convex shaft 15 just moves to the position of the relief groove 2001. At this time, the reverse force during the compaction process can separate the two sets of neodymium magnets 16 on the horizontal plate 13 and the horizontal frame 12 under the cooperation of the first convex shaft 14 and the inclined surface 1801, and make the second convex shaft 15 enter the relief groove 2001. At the same time, the first convex shaft 14 separates from the inclined surface 1801 and abuts against the side of the lifting frame. After that, the lifting frame 18 can continue to move. Since the second convex shaft 15 is locked in the relief groove 2001, the above-mentioned compaction degree can be maintained, and the first permeable stone 8 is not pushed upward due to the expansion of the bentonite composition by absorbing water during the wetting process, thus improving the detection accuracy.

[0072] Please see Figure 1 , Figures 8-9 The top tube 24 is arranged in multiple sets at equal intervals around the circumference. The top tube 24 can be inserted into the detection cylinder 9. The end of the top tube 24 facing the detection cylinder 9 is arranged in multiple sets of water-permeable holes at equal intervals around the circumference.

[0073] The top extension structure is disposed on the side of the detection cylinder 9 and connected to the top tube 24. The pressure rod 26 connected to the guide assembly can drive the top extension structure to move so that the top tube 24 is inserted into the detection cylinder 9 after the end cover 7 is locked in height.

[0074] The top extension structure includes a follower frame 23 that is slidably installed on the side of the detection cylinder 9, and the follower frame 23 is provided with a second inclined groove 2301;

[0075] The top extension structure also includes a support plate 25 disposed on the side of the follower frame 23. The support plate 25 has a second horizontal groove 2501 along its length direction. A third convex shaft 2401 is rotatably mounted on one end of the top tube 24. The third convex shaft 2401 can roll in the second inclined groove 2301 and the second horizontal groove 2501.

[0076] The top extension structure also includes a collar 21 sleeved on the side of the detection cylinder 9, and the collar 21 is connected to the detection cylinder 9 by a second column spring 22;

[0077] The follower frame 23 is also provided with a second vertical groove 2302, and the guide block 2502 provided on the support plate 25 can slide in the second vertical groove 2302.

[0078] In the initial state, the multiple sets of jacking pipes 24 are not protruding from the inner wall of the detection cylinder 9. At this time, it is more convenient to install the second permeable stone 10 and place the bentonite composition. When the first permeable stone 8 has completed the compaction of the bentonite composition and the second convex shaft 15 is locked in the relief groove 2001, the electric telescopic rod 19 will further drive the lifting frame 18 to move downward. During this process, the pressure rod 26 connecting the lifting frame 18 can act on the collar 21, causing the collar 21 to move downward. At this time, the second cylindrical spring 22 is stretched, and the follower frame 23 will move downward along the length direction of the guide block 2502. During the downward movement of the follower frame 23, the third convex shaft 2401 can be tilted at the second inclination. With the cooperation of groove 2301 and second horizontal groove 2501, the tube moves toward the detection cylinder 9, allowing the jacking tube 24 to move toward the axis of the detection cylinder 9 and be inserted into the compacted bentonite composition. In this way, the solution injected into the jacking tube 24 by the pressurizing device 1 can achieve the effect of pre-wetting the bentonite composition. Unlike traditional pressurized wetting, when the jacking tube 24 is inserted into the bentonite composition, it is located in the middle of the bentonite composition. The solution can diffuse in the bentonite composition when it enters the bentonite composition, thereby wetting the bentonite composition at a faster speed. To a certain extent, this shortens the time for the bentonite composition to be fully wetted, thus shortening the detection cycle.

[0079] Based on the above settings, the compaction of the bentonite composition and the insertion of the jacking pipe 24 are carried out in steps. This ensures that the jacking pipe 24 is inserted only after the bentonite composition is compacted, thus preventing premature insertion of the jacking pipe 24 from adversely affecting the compaction of the bentonite composition, improving the compaction degree of the bentonite composition, and improving the detection accuracy. On the other hand, when the jacking pipe 24 is inserted into the compacted bentonite composition, the solution can pre-wet the bentonite composition, improving the wetting speed of the bentonite composition and shortening the detection cycle.

[0080] As an embodiment of the present invention, a method for testing bentonite assemblies using the aforementioned intelligent sensing and monitoring bentonite assembly permeability testing device is also proposed, comprising the following steps:

[0081] Step 1: Apply a thin layer of petroleum jelly to the inner wall of the test cylinder 9 and the sides of the first permeable stone 8 and the second permeable stone 10;

[0082] Step 2: Install the second permeable stone 10 into the test cylinder 9, then lay a layer of filter paper on the second permeable stone 10, and finally pour the packing into the test cylinder 9;

[0083] Step 3: Place the moistened filter paper on top of the packing material and start the guiding assembly;

[0084] Step 4: The guide component drives the end cap 7 to move laterally to be coaxial with the detection cylinder 9 and then moves toward the detection cylinder 9, and uses the first permeable stone 8 to compact the packing. The thickness of the packing after compaction is 30mm.

[0085] Step 5: After the packing is compacted, the lifting frame 18 will drive the second convex shaft 15 into the relief groove 2001, and then guide the assembly to continue moving, driving the pressure rod 26 to act on the top extension structure so that the top pipe 24 is inserted into the packing.

[0086] Step 6: Pressurizing device 1 delivers solution toward the jacking pipe 24 to pre-wet the packing material. Then, pressurizing device 1 stops delivering solution toward the jacking pipe 24 and delivers 200 mL of solution toward the top of the first permeable stone 8, while pressurizing to 60 kPa.

[0087] Step 7: The solution passing through the packing material is collected, and the mass of the solution is weighed by the intelligent detection unit.

[0088] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0089] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bentonite combination permeability testing device of intelligent sensing monitoring, comprising: a pressurizing device, an intelligent detection unit is built in the pressurizing device, the intelligent detection unit is used for weighing a permeated solution; a detection cylinder is arranged on the pressurizing device, a end cover, a first water-permeable stone and a second water-permeable stone are detachably mounted on the detection cylinder; characterized in that further comprising: a guide assembly is mounted on the pressurizing device and connected with the end cover, the guide assembly can drive the end cover to perform horizontal movement and lifting action, and can compact the filler arranged in the detection cylinder when the end cover performs lifting action; a plurality of groups of top pipes are circumferentially equidistantly arranged, the top pipes can be inserted into the detection cylinder; a magnetic attraction assembly is connected with the guide assembly, a second convex shaft is arranged on the magnetic attraction assembly, the second convex shaft cooperates with a side frame arranged on the guide assembly, and can lock the height of the end cover after the end cover is closed; a top extension structure is arranged on the side of the detection cylinder and connected with the top pipe, a pressure rod connected with the guide assembly can drive the top extension structure to move after the height of the end cover is locked to insert the top pipe into the inside of the detection cylinder.

2. A smart sensing monitored bentonite composite permeability test device according to claim 1, wherein, the guide assembly comprises a support plate is fixedly mounted on the pressurizing device, a guide groove is arranged on the support plate; a sliding plate is slidingly mounted on the support plate, the sliding plate is connected with the support plate through a first columnar spring, a first inclined groove is arranged on the sliding plate; a driving structure connected with the sliding plate, a roller is arranged on the side of the driving structure, and the roller can roll in the guide groove and the first inclined groove.

3. A smart sensing monitored bentonite composite permeability test device according to claim 2, wherein, the guide groove comprises a first horizontal groove and a first vertical groove arranged on the support plate, the first horizontal groove is communicated with the first vertical groove and is perpendicular to the first vertical groove.

4. The intelligent sensing monitoring bentonite composite permeability testing device according to claim 2, characterized in that, the driving structure comprises a guide frame connected with the sliding plate, a guide shaft is arranged on the guide frame, a connecting frame fixedly connected with the end cover is slidingly mounted on the guide shaft; the driving structure further comprises a lifting frame slidingly arranged through the guide frame, an electric telescopic rod is rotatably mounted on the lifting frame, and one end of the electric telescopic rod away from the lifting frame is rotatably connected with the pressurizing device.

5. A smart sensing monitored bentonite composite permeability test device according to claim 4, wherein, the magnetic attraction assembly comprises a transverse piece fixedly connected with the connecting frame and a horizontal movement plate slidingly mounted on the transverse piece, the horizontal movement plate is connected with the transverse piece through a rubidium magnet; the second convex shaft is rotatably mounted on the horizontal movement plate.

6. A smart sensing monitored bentonite composite permeability test device according to claim 4, wherein, a first convex shaft is also rotatably mounted on the horizontal movement plate, and the first convex shaft abuts and adapts to an inclined surface arranged on the lower end of the lifting frame.

7. A smart sensing monitored bentonite composite permeability test device according to claim 6, wherein, the side frame is fixedly mounted on the support plate, and a clearance groove is arranged on the support plate, when the second convex shaft enters the clearance groove, the first convex shaft can be separated from the inclined surface.

8. The intelligent sensing monitoring bentonite composite permeability testing device according to claim 1, characterized in that, the top extension structure comprises a follow-up frame slidingly mounted on the side of the detection cylinder, a second inclined groove is arranged on the follow-up frame; the top extension structure further comprises a support plate arranged on the side of the follow-up frame, a second horizontal groove is formed in the length direction of the support plate; One end of the top pipe is rotatably installed with a third convex shaft, which can roll in the second inclined groove and the second horizontal groove.

9. A smart sensing monitored bentonite composite permeability test device according to claim 8, wherein, The top extension structure further comprises a sleeve ring sleeved on the side of the detection cylinder, and the sleeve ring is connected with the detection cylinder through a second cylindrical spring; The second vertical groove is arranged on the second vertical groove, and the guide block arranged on the support plate can slide in the second vertical groove.

10. A method of testing a bentonite composition using a bentonite composition permeability test device of the smart sensor monitored type according to any one of claims 1 to 9, characterized in that, The method comprises the following steps: Step one: a layer of vaseline is thinly applied on the inner wall of the detection cylinder and the side of the first and second water-permeable stones; Step two: the second water-permeable stone is installed into the detection cylinder, then a layer of filter paper is laid on the second water-permeable stone, and finally the filler is poured into the detection cylinder; Step three: the wet filter paper is placed on the upper part of the filler, and the guide assembly is started; Step four: the guide assembly drives the end cover to move horizontally to the same axis as the detection cylinder, and then moves towards the detection cylinder, and the first water-permeable stone is used to compact the filler, and the thickness of the compacted filler is 30mm; Step five: after the filler is compacted, the lifting frame drives the second convex shaft into the accommodation groove, and then the guide assembly continues to move, and the pressing rod acts on the top extension structure to make the top pipe inserted into the filler; Step six: the solution is delivered towards the top pipe by the pressurizing device, so as to pre-wet the filler, then the pressurizing device stops delivering the solution towards the top pipe and delivers 200mL of solution towards the top of the first water-permeable stone, and the pressure is increased to 60kPa; Step seven: the solution permeating through the filler is collected, and the mass of the solution is weighed by the intelligent detection unit.

Images