A test device for simulating a fault fracture zone splitting grouting process

Abstract

The utility model relates to a kind of test device for fault fracture zone splitting grouting process simulation, four support rods are symmetrically penetrated and slidably connected on the support frame of bottom plate top, the top end of four support rods is fixedly installed with same support box, the bottom end of four support rods is fixedly installed with same connecting plate, connecting plate is slidably connected with the inner wall of four support frames, the output shaft of first electric push rod on the top of bottom plate is fixedly connected with the bottom of connecting plate, the top of test block in support box is provided with grouting groove, multiple pressing mechanisms installed in support box are used to carry out transverse pressing test to test block;The top of grouting mechanism installed on the top of one side of bottom plate penetrates cover plate and is connected with cover plate, for grouting into grouting groove;The test device can drive corresponding pressing mechanism according to the stress surface required by test block, can be flexibly adjusted, and can stably and uniformly inject grout into grouting groove before test, more convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical engineering testing technology, and in particular relates to a test device for simulating the splitting grouting process in fault fracture zones. Background Technology

[0002] In the field of geological engineering, the stability study of fault fracture zones is crucial. Fracture grouting, as an effective reinforcement method, is widely used in the treatment of fault fracture zones. To further explore the process and effects of fracture grouting in fault fracture zones, simulation studies using experimental equipment are necessary.

[0003] Currently, existing experimental devices for simulating the splitting grouting process in fault fracture zones are mostly limited in function and cannot meet diverse experimental needs. While they can simulate basic grouting operations, they lack comprehensiveness and flexibility in simulating the stress on the test blocks. In actual engineering, the stress state of fault fracture zones is complex and variable, and different directions and numbers of stress surfaces significantly affect the splitting grouting effect. However, existing experimental devices often only allow for pressing tests on a fixed number of stress surfaces on the test blocks, failing to flexibly adjust the number of stress surfaces according to actual research needs. This leads to a certain deviation between experimental results and actual conditions, making it difficult to accurately reflect the splitting grouting characteristics of fault fracture zones under different stress conditions, thus limiting a deeper understanding of the splitting grouting mechanism in fault fracture zones and the optimization of engineering applications. Utility Model Content

[0004] In view of this, in order to solve the problem that existing test devices can only perform pressing tests on a fixed number of stress-bearing surfaces of the test block, and cannot flexibly adjust the number of stress-bearing surfaces of the test block according to actual research needs, thus affecting the simulation effect, this utility model provides a test device for simulating the splitting grouting process of fault fracture zones.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A test device for simulating the splitting grouting process in a fault fracture zone includes a base plate, a support frame fixedly mounted on the top of the base plate, four support rods symmetrically and slidably connected through the support frame, a common support box fixedly mounted on the top of the four support rods, a cover plate fixedly clamped to the top of the support box, a common connecting plate fixedly mounted on the bottom of the four support rods, the connecting plate being slidably connected to the inner wall of the four support frames, a first electric push rod fixedly mounted on the top of the base plate, the output shaft of the first electric push rod being fixedly connected to the bottom of the connecting plate, a test block for testing is set inside the support box, a grouting groove is set on the top of the test block, and the device further includes:

[0007] Multiple pressing mechanisms are installed inside the support box. These pressing mechanisms are used to perform transverse pressing tests on the test block.

[0008] A grouting mechanism is installed on one side of the top of the base plate. The top of the grouting mechanism passes through the cover plate and is connected to the cover plate. It is used to inject grout into the grouting groove.

[0009] Furthermore, a test chamber is fixedly installed on the bottom inner wall of the support box, and a placement rack is fixedly installed inside the test chamber. The test block is placed in the placement rack, and multiple pressing mechanisms are adapted to the placement rack.

[0010] Beneficial effects: After the test block is placed in the placement rack, the rack can support and hold the test block, enabling the test block to be positioned during the compression test.

[0011] Furthermore, the pressing mechanism includes a transmission box fixedly installed on the inner wall of one side of the support box. A transmission plate is tightly slidably connected inside the transmission box. Two transmission rods are symmetrically fixedly installed on one side of the transmission plate. One end of each transmission rod extends into the placement frame and is fixedly installed with the same pressure plate. The pressure plate is in contact with the placement frame and is used to press the test block. A hydraulic component is also fixedly connected through the inner wall of one side of the support box. The hydraulic component is connected to the transmission box. One side of the hydraulic component extends to the outside of the support box and is connected to the top of the base plate. Hydraulic oil is provided in the hydraulic component and the area between the transmission plate and the hydraulic component inside the transmission box.

[0012] Beneficial effects: By activating the first electric push rod, the connecting plate moves downward, which in turn moves the support box downward, thereby compressing the hydraulic components. This allows the hydraulic oil in the hydraulic components to be injected into the transmission box, which in turn pushes the pressure plate through the transmission plate and two transmission rods, thus enabling the pressure plate to perform a pressing test on the test block.

[0013] Furthermore, the hydraulic assembly includes a delivery pipe that penetrates one inner wall of the support box and is fixedly connected to one inner wall of the support box. The delivery pipe is connected to the transmission box. It also includes an oil tank fixedly installed on the top of the base plate. A piston plate is tightly slidably connected inside the oil tank. Hydraulic oil is placed inside the oil tank and located below the piston plate. A support pipe is fixedly installed through the piston plate. The top end of the support pipe penetrates the top inner wall of the oil tank and extends to the top of the oil tank. The support pipe is tightly slidably connected to the top inner wall of the oil tank. A connecting box is fixedly connected to the top end of the support pipe. One end of the delivery pipe extends into the connecting box and is fixedly connected to one inner wall of the connecting box.

[0014] Beneficial effects: After the conveying pipe moves downward along with the support box, it can push the piston plate to move downward along the oil tank through the support pipe, thereby pressing the hydraulic oil. The hydraulic oil can be injected into the transmission box through the support pipe, connecting box and conveying pipe. In this way, pressure can be applied to the pressure plate in the form of hydraulic pressure, and the test block can be pressed.

[0015] Furthermore, the hydraulic assembly also includes a return pipe that penetrates the inner wall of the other side of the connecting box and is fixedly connected to the inner wall of the other side of the connecting box. A connecting pipe is fixedly installed through the inner wall of the top side of the oil tank. The bottom end of the return pipe extends into the connecting pipe. The return pipe is tightly slidably connected to the inner wall of the connecting pipe. A switching component is also connected inside the connecting box. The top of the switching component extends to the top of the connecting box and is connected to the top of the connecting box.

[0016] Beneficial effects: By setting the switching component, the flow direction of hydraulic oil can be adjusted. Therefore, when it is not necessary to press one side of the test block, the return pipe can be kept open by operating the switching component. At this time, the outflowing hydraulic oil can flow into the top of the piston plate through the return pipe, thereby generating thrust on the corresponding pressure plate, without affecting the normal operation of other hydraulic components.

[0017] Furthermore, the switching component includes an adjusting cover tightly rotatably connected inside the connecting box. The adjusting cover is connected to the support pipe. A flow hole is provided on one inner wall of the adjusting cover, which is connected to the delivery pipe or the return pipe respectively. A rotating shaft is fixedly installed at the top center of the adjusting cover. The top end of the rotating shaft passes through the top center inner wall of the connecting box and extends above the connecting box. The rotating shaft is rotatably connected to the top inner wall of the connecting box. A rotating plate is fixedly installed at the top end of the rotating shaft. A plug rod is slidably connected through the rotating plate. A positioning ring is fixedly installed at the top of the connecting box. Two symmetrical insertion holes are opened at the top of the positioning ring. The plug rod is movably inserted into the two insertion holes respectively. A tension spring located on the rotating plate is sleeved on the plug rod. The top and bottom ends of the tension spring are fixedly connected to the plug rod and the rotating plate respectively through hooks set on the top and bottom ends of the tension spring.

[0018] Beneficial effects: After the insertion rod is pulled out of the insertion hole, the rotating plate is rotated 180° to drive the adjusting cover to rotate, keeping the flow hole connected to the delivery pipe or return pipe. Therefore, in actual use, it is convenient to adjust the flow direction of hydraulic oil, thereby facilitating the adjustment of the number of pressing surfaces of the test block. After the adjusting cover is rotated and adjusted, the insertion rod can be released, and the tension spring under force can pull the insertion rod to insert into the corresponding insertion hole. In this way, the adjusting cover can be positioned and braked by the rotating plate and the rotating shaft.

[0019] Furthermore, the grouting mechanism includes a delivery pump fixedly installed on one side of the top of the base plate. The suction end of the delivery pump is used to connect to an external grout delivery pipeline. A hose is fixedly installed on the output end of the delivery pump. A connecting pipe is fixedly installed at the top of the hose. An installation pipe corresponding to the position of the grouting groove is fixedly connected through the cover plate. One end of the connecting pipe extends into the installation pipe and is fixedly connected to the inner wall of one side of the installation pipe.

[0020] Beneficial effects: After connecting the delivery pump to the external pipeline for conveying slurry, starting the delivery pump can stably inject the slurry into the grouting tank through the hose, connecting pipe and installation pipe.

[0021] Furthermore, a movable cover is tightly slidably connected inside the installation pipe. The top of the movable cover extends above the installation pipe, and a drive motor is fixedly installed on the top of the movable cover. The output shaft of the drive motor extends into the movable cover and a conveying screw is fixedly installed thereon. The bottom end of the conveying screw passes through the installation pipe and extends into the grouting tank. An installation plate located above the installation pipe is also fixedly fitted on the movable cover. A second electric push rod located below the installation plate is fixedly installed on the top of the cover plate. The output shaft of the second electric push rod is fixedly connected to the bottom of the installation plate.

[0022] Beneficial effects: After the slurry is delivered into the installation pipe, the drive motor is started to rotate the conveying screw. The rotating conveying screw delivers the slurry into the grouting tank and creates a mixing effect, allowing the slurry to be injected evenly into the grouting tank. The second electric push rod is then started to move the installation plate upward, which in turn moves the conveying screw upward. Therefore, the height of the conveying screw can be adjusted upward according to the amount of slurry injected into the grouting tank, thus facilitating uniform injection.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. The experimental device for simulating the splitting grouting process of fault fracture zone disclosed in this utility model, through the set pressing mechanism, can drive the connecting plate to move downward by activating the first electric push rod. At this time, it can drive the support box to move downward, thereby compressing the hydraulic component and injecting the hydraulic oil in the hydraulic component into the transmission box. Then, the pressure plate can be pushed to move through the transmission plate and two transmission rods, thereby using the pressure plate to perform a pressing test on the test block.

[0025] 2. The experimental device for simulating the grouting process of a fault fracture zone disclosed in this utility model, through the grouting mechanism, allows for the stable injection of grout into the grouting tank by connecting the delivery pump to the external grout delivery pipeline after the delivery pump is started, via the hose, connecting pipe, and installation pipe. After the grout is delivered into the installation pipe, the drive motor can be started to rotate the delivery screw, thereby using the rotating delivery screw to deliver the grout into the grouting tank and creating a stirring effect, ensuring that the grout is injected evenly into the grouting tank. Furthermore, starting the second electric push rod moves the installation plate upward, thereby moving the delivery screw upward. Therefore, the height of the delivery screw can be adjusted upward according to the amount of grout injected into the grouting tank, thus facilitating uniform injection.

[0026] 3. The test device for simulating the splitting grouting process of the fault fracture zone disclosed in this utility model can drive the corresponding pressing mechanism to operate according to the required force surface of the test block. Thus, it can be flexibly adjusted when pressing the test block, and can inject grout into the grouting tank stably and evenly before the test. Therefore, it can provide good convenience in the actual test process.

[0027] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the experimental device for simulating the splitting grouting process in the fault fracture zone according to this utility model. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the experimental device for simulating the splitting grouting process in the fault fracture zone according to this utility model. Figure 2 ;

[0031] Figure 3 This utility model Figure 1 Front-view sectional view;

[0032] Figure 4 This utility model Figure 1 Schematic diagram of the internal structure of the middle support box;

[0033] Figure 5 This utility model Figure 1 Schematic diagram of the connection structure between the transmission box, transmission plate, and pressure plate;

[0034] Figure 6 This utility model Figure 1 Cross-sectional view of the fuel tank;

[0035] Figure 7 This utility model Figure 1 Sectional view of the connecting box;

[0036] Figure 8 This utility model Figure 1 A schematic diagram of the connection structure of the mounting pipe, moving cover, drive motor, conveying screw and second electric push rod.

[0037] Reference numerals: 1. Base plate; 2. Support frame; 3. Support rod; 4. Support box; 5. Cover plate; 6. Test chamber; 7. Placement rack; 8. Test block; 9. Transmission box; 10. Transmission plate; 11. Transmission rod; 12. Pressure plate; 13. Connecting plate; 14. First electric push rod; 15. Oil tank; 16. Piston plate; 17. Support pipe; 18. Connecting box; 19. Conveying pipe; 20. Return pipe; 21. Connecting pipe; 22. Adjusting cover; 23. Rotating shaft; 24. Rotating plate; 25. Insert rod; 26. Tension spring; 27. Positioning ring; 28. Insertion hole; 29. ​​Flow hole; 30. Mounting pipe; 31. Connecting pipe; 32. Hose; 33. Conveying pump; 34. Moving cover; 35. Drive motor; 36. Conveying screw; 37. Mounting plate; 38. Second electric push rod. Detailed Implementation

[0038] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0039] Reference Figure 1-3 A test device for simulating the splitting grouting process in a fault fracture zone is disclosed. A support frame 2 is bolted to the top of a base plate 1. Four sliding holes are symmetrically formed on the support frame 2, and four support rods 3 pass through these four sliding holes and are slidably connected to the inner walls of the holes. A common support box 4 is welded to the top of the four support rods 3, and a cover plate 5 is snapped onto the top of the support box 4 using a snap-fit ​​structure. A common connecting plate 13 is welded to the bottom of the four support rods 3, and the connecting plate 13 is slidably connected to the inner walls of the four support frames 2, allowing it to move up and down within the support frames 2. A first electric push rod 14 is bolted to the top of the base plate 1, and the output shaft of the first electric push rod 14 is bolted to the bottom of the connecting plate 13.

[0040] Inside the support box 4, a test box 6 is fixedly installed on its bottom inner wall by bolts. Inside the test box 6, a placement rack 7 is fixedly installed by bolts. The test block 8 used for testing is placed in the placement rack 7. A grouting groove is provided on the top of the test block 8.

[0041] Multiple pressing mechanisms are installed inside the support box 4. These mechanisms are used to perform a transverse pressing test on the test block 8. (Refer to...) Figure 5Specifically, the pressing mechanism includes a transmission box 9 bolted to the inner wall of one side of the support box 4. A transmission plate 10 is slidably connected inside the transmission box 9, and two transmission rods 11 are symmetrically welded and fixed to one side of the transmission plate 10. One end of each transmission rod 11 extends into the placement frame 7 and is fixedly mounted with the same pressure plate 12 by welding. The pressure plate 12 contacts the placement frame 7 and is used to perform a pressing test on the test block 8.

[0042] A hydraulic assembly is fixedly connected through one side of the inner wall of the support box 4. The hydraulic assembly is connected to the transmission box 9, and one side of the hydraulic assembly extends to the outside of the support box 4 and connects to the top of the base plate 1. Hydraulic oil is provided in the area between the hydraulic assembly, the transmission box 9, the transmission plate 10, and the hydraulic assembly. The hydraulic assembly includes a delivery pipe 19 that penetrates one side of the inner wall of the support box 4 and is fixedly connected to one side of the inner wall of the support box 4. The delivery pipe 19 is connected to the transmission box 9. It also includes an oil tank 15 that is fixedly installed on the top of the base plate 1 by bolts. A piston plate 16 is slidably connected inside the oil tank 15. The hydraulic oil is located inside the oil tank 15 and below the piston plate 16. A support pipe 17 is fixedly installed through the piston plate 16. The top end of the support pipe 17 penetrates the top inner wall of the oil tank 15 and extends to the top of the oil tank 15. The support pipe 17 is slidably connected to the top inner wall of the oil tank 15. The top end of the support pipe 17 is fixedly connected to the connecting box 18, and one end of the conveying pipe 19 extends into the connecting box 18 and is fixedly connected to the inner wall of one side of the connecting box 18.

[0043] When the first electric push rod 14 is activated to move the connecting plate 13 downward, it can move the support box 4 downward. At this time, the delivery pipe 19 moves downward along with the support box 4, and can push the piston plate 16 downward along the oil tank 15 through the support pipe 17 to press the hydraulic oil. The hydraulic oil can be injected into the transmission box 9 through the support pipe 17, the connecting box 18 and the delivery pipe 19, thereby pushing the pressure plate 12 to move through the transmission plate 10 and the two transmission rods 11, and using the pressure plate 12 to perform a pressing test on the test block 8.

[0044] Reference Figure 4The hydraulic assembly also includes a return pipe 20 that penetrates and is fixedly connected to the inner wall of the other side of the connecting box 18. A connecting pipe 21 is fixedly installed through the inner wall of the top side of the oil tank 15. The bottom end of the return pipe 20 extends into the connecting pipe 21, and the return pipe 20 is tightly slidably connected to the inner wall of the connecting pipe 21. A switching component is also connected inside the connecting box 18. The top of the switching component extends above the connecting box 18 and is connected to the top of the connecting box 18. By setting the switching component, the flow direction of the hydraulic oil can be adjusted. When it is not necessary to perform a pressing test on one side of the test block 8, the return pipe 20 can be kept open by operating the switching component. At this time, the hydraulic oil flowing out can flow through the return pipe 20 into the upper part of the piston plate 16, thereby generating a thrust on the corresponding pressure plate 12 without affecting the normal operation of other hydraulic components.

[0045] Reference Figure 6 , 7 The switching component includes an adjusting cover 22 tightly rotatably connected within the connecting box 18, and the adjusting cover 22 is connected to the support pipe 17. A flow hole 29 is provided on one inner wall of the adjusting cover 22, and the flow hole 29 is connected to either the delivery pipe 19 or the return pipe 20. A rotating shaft 23 is welded and fixedly installed at the top center of the adjusting cover 22. The top end of the rotating shaft 23 penetrates the top center inner wall of the connecting box 18 and extends above the connecting box 18. The rotating shaft 23 and the top inner wall of the connecting box 18 are rotatably connected via bearings. A rotating plate 24 is welded and fixedly installed at the top end of the rotating shaft 23, and a sliding rod 25 is slidably connected through the rotating plate 24. A positioning ring 27 is bolted and fixedly installed on the top of the connecting box 18. Two symmetrical insertion holes 28 are provided on the top of the positioning ring 27, and the insertion rod 25 is movably inserted into each of the two insertion holes 28. A tension spring 26 is fitted onto the insertion rod 25 and located on the rotating plate 24. The top and bottom ends of the tension spring 26 are fixedly connected to the insertion rod 25 and the rotating plate 24 respectively via hooks on the top and bottom ends of the tension spring 26. When the insertion rod 25 is pulled out from the insertion hole 28, the rotating plate 24 is driven to rotate 180°, which drives the adjusting cover 22 to rotate, keeping the flow hole 29 connected to the delivery pipe 19 or the return pipe 20, thereby facilitating the adjustment of the hydraulic oil flow direction and the adjustment of the number of pressing surfaces of the test block 8. After the adjusting cover 22 is rotated and adjusted, the insertion rod 25 is released, and the tension spring 26, which is under tension, can pull the insertion rod 25 to insert into the corresponding insertion hole 28, thereby positioning and braking the adjusting cover 22 through the rotating plate 24 and the rotating shaft 23.

[0046] Reference Figure 8A grouting mechanism is installed on one side of the top of the base plate 1. The top of the grouting mechanism passes through and connects to the cover plate 5, and is used to inject grout into the grouting tank. The grouting mechanism includes a delivery pump 33 fixedly installed on one side of the top of the base plate 1 by bolts. The suction end of the delivery pump 33 is used to connect to an external grout delivery pipeline. A hose 32 is fixedly installed on the output end of the delivery pump 33 by a flange, and a connecting pipe 31 is fixedly installed on the top end of the hose 32 by a flange. An installation pipe 30 corresponding to the position of the grouting tank is fixedly connected through the cover plate 5. One end of the connecting pipe 31 extends into the installation pipe 30 and is fixedly connected to the inner wall of the installation pipe 30 by a flange. When the delivery pump 33 is connected to the external grout delivery pipeline, the delivery pump 33 can be started to stably inject grout into the grouting tank through the hose 32, the connecting pipe 31, and the installation pipe 30.

[0047] A movable cover 34 is tightly slidably connected inside the mounting pipe 30, with its top extending above the mounting pipe 30. A drive motor 35 is bolted to the top of the movable cover 34, and the output shaft of the drive motor 35 extends into the movable cover 34. A conveying screw 36 is fixedly mounted thereon via a coupling, and the bottom end of the conveying screw 36 passes through the mounting pipe 30 and extends into the grouting tank. A mounting plate 37, located above the mounting pipe 30, is also fixedly fitted onto the movable cover 34. A second electric push rod 38, located below the mounting plate 37, is bolted to the top of the cover plate 5. The output shaft of the second electric push rod 38 is bolted to the bottom of the mounting plate 37. When grout is conveyed into the mounting pipe 30, the drive motor 35 is activated to rotate the conveying screw 36. The rotating conveying screw 36 conveys the grout into the grouting tank and creates a mixing effect, ensuring the grout is evenly injected into the grouting tank. At the same time, the second electric push rod 38 is activated to drive the mounting plate 37 to move upward, thereby moving the conveying screw 36 upward. The height of the conveying screw 36 is adjusted upward according to the amount of grout injected into the grouting tank, so as to facilitate uniform grout injection.

[0048] The working principle of the experimental device simulating the splitting grouting process of the fault fracture zone is as follows: First, the test block 8 to be tested is placed in the placement frame 7. Then, the cover plate 5 is engaged with the support box 4, allowing the conveying screw 36 to be inserted into the grouting tank. Next, the conveying pump 33 is started to draw grout from the external grout conveying pipe, which is then conveyed through the hose 32 and connecting pipe 31 to the installation pipe 30. Then, the drive motor 35 is started to drive the conveying screw 36 to rotate. The rotating conveying screw 36 conveys the grout that has entered the installation pipe 30 downwards into the grouting tank, creating a stirring effect to ensure that the grout is evenly injected into the grouting tank. As the amount of grout injected into the grouting tank increases, the second electric push rod 38 is started. Its output shaft drives the installation plate 37 to move upwards, which in turn drives the moving cover 34 and the conveying screw 36 to move upwards. The height of the conveying screw 36 is adjusted to ensure uniform injection. After the injection is completed, the grout is left to stand for a period of time to harden.

[0049] This technical solution incorporates multiple pressing mechanisms to simultaneously press multiple surfaces of the test block 8. Therefore, before conducting the pressing test on the test block 8, the number of surfaces to be pressed is determined based on the test requirements. For pressing mechanisms that do not require pressing, their corresponding switching components are operated: the corresponding insert rod 25 is pulled out from the insertion hole 28 on the positioning ring 27. At this time, the tension spring 26 is stretched, which then drives the rotating plate 24 to rotate 180°, causing the rotating shaft 23 and the adjusting cover 22 to rotate, keeping the flow hole 29 on the adjusting cover 22 connected to the return pipe 20. Then, the insert rod 25 is released, and the tension spring 26, which is under stress, pulls the insert rod. Insert 25 into the corresponding socket 28 to position and brake the adjustment cover 22. Then, start the first electric push rod 14. Its output shaft drives the connecting plate 13 to move downward, which in turn drives the four support rods 3 and the support box 4 to move downward. As the support box 4 moves downward, the delivery pipe 19 pushes the piston plate 16 to move downward along the oil tank 15 through the connecting box 18 and the support pipe 17 to press the hydraulic oil. The hydraulic oil is injected into the transmission box 9 through the support pipe 17, the connecting box 18 and the delivery pipe 19. The hydraulic oil in the transmission box 9 pushes the transmission plate 10 to move. The transmission plate 10 pushes the pressure plate 12 to move through the two transmission rods 11. The pressure plate 12 is used to perform a transverse pressing test on the test block 8.

[0050] When the flow hole 29 is connected to the return pipe 20, the hydraulic oil entering the regulating cover 22 can flow through the return pipe 20 into the area above the piston plate 16, thereby generating thrust on the corresponding pressure plate 12 without affecting the normal operation of other hydraulic components.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A test device for simulating the splitting grouting process in a fault fracture zone, comprising a base plate (1), a support frame (2) fixedly installed on the top of the base plate (1), four support rods (3) symmetrically and slidably connected through the support frame (2), a support box (4) fixedly installed at the top of the four support rods (3), a cover plate (5) fixedly clamped on the top of the support box (4), a connecting plate (13) fixedly installed at the bottom of the four support rods (3), the connecting plate (13) being slidably connected to the inner wall of the four support frames (2), a first electric push rod (14) fixedly installed on the top of the base plate (1), the output shaft of the first electric push rod (14) being fixedly connected to the bottom of the connecting plate (13), characterized in that, A test block (8) for testing is provided inside the support box (4). A grouting groove is provided on the top of the test block (8). The test block (8) also includes: Multiple pressing mechanisms are installed inside the support box (4), which are used to perform transverse pressing tests on the test block (8); A grouting mechanism is installed on one side of the top of the base plate (1). The top of the grouting mechanism passes through the cover plate (5) and is connected to the cover plate (5) for grouting into the grouting groove.

2. The experimental apparatus for simulating the grouting process of fault fracture zones as described in claim 1, characterized in that, The test box (6) is fixedly installed on the bottom inner wall of the support box (4). A placement rack (7) is fixedly installed inside the test box (6). The test block (8) is placed inside the placement rack (7). Multiple pressing mechanisms are adapted to the placement rack (7).

3. The experimental apparatus for simulating the grouting process of fault fracture zones as described in claim 1, characterized in that, The pressing mechanism includes a transmission box (9) fixedly installed on the inner wall of one side of the support box (4). A transmission plate (10) is tightly slidably connected inside the transmission box (9). Two transmission rods (11) are symmetrically fixedly installed on one side of the transmission plate (10). One end of each transmission rod (11) extends into the placement frame (7) and is fixedly installed with the same pressure plate (12). The pressure plate (12) is in contact with the placement frame (7) and is used to press the test block (8). A hydraulic component is also fixedly connected through the inner wall of one side of the support box (4). The hydraulic component is connected to the transmission box (9). One side of the hydraulic component extends to the outside of the support box (4) and is connected to the top of the bottom plate (1). Hydraulic oil is provided in the area between the hydraulic component and the transmission plate (10) and the hydraulic component inside the transmission box (9).

4. The experimental apparatus for simulating the grouting process in a fault fracture zone as described in claim 3, characterized in that, The hydraulic assembly includes a delivery pipe (19) that penetrates one side of the inner wall of the support box (4) and is fixedly connected to one side of the inner wall of the support box (4). The delivery pipe (19) is connected to the transmission box (9). It also includes an oil tank (15) that is fixedly installed on the top of the base plate (1). A piston plate (16) is tightly slidably connected inside the oil tank (15). Hydraulic oil is placed inside the oil tank (15) and located below the piston plate (16). A support pipe (17) is fixedly installed through the piston plate (16). The top end of the support pipe (17) penetrates the top inner wall of the oil tank (15) and extends to the top of the oil tank (15). The support pipe (17) is tightly slidably connected to the top inner wall of the oil tank (15). A connecting box (18) is fixedly connected to the top end of the support pipe (17). One end of the delivery pipe (19) extends into the connecting box (18) and is fixedly connected to one side of the inner wall of the connecting box (18).

5. The experimental apparatus for simulating the grouting process of fault fracture zones as described in claim 4, characterized in that, The hydraulic assembly also includes a return pipe (20) that penetrates the inner wall of the other side of the connecting box (18) and is fixedly connected to the inner wall of the other side of the connecting box (18). A connecting pipe (21) is fixedly installed through the inner wall of the top side of the oil tank (15). The bottom end of the return pipe (20) extends into the connecting pipe (21). The return pipe (20) is tightly slidably connected to the inner wall of the connecting pipe (21). A switching component is also connected inside the connecting box (18). The top of the switching component extends to the top of the connecting box (18) and is connected to the top of the connecting box (18).

6. The experimental apparatus for simulating the grouting process in a fault fracture zone as described in claim 5, characterized in that, The switching component includes an adjusting cover (22) tightly rotatably connected to the connecting box (18). The adjusting cover (22) is connected to the support pipe (17). A flow hole (29) is provided on one inner wall of the adjusting cover (22). The flow hole (29) is connected to the delivery pipe (19) or the return pipe (20) respectively. A rotating shaft (23) is fixedly installed at the top center of the adjusting cover (22). The top end of the rotating shaft (23) penetrates the top center inner wall of the connecting box (18) and extends above the connecting box (18). The rotating shaft (23) is rotatably connected to the top inner wall of the connecting box (18). A rotating plate (24) is fixedly installed at the top of the connecting box (18). A plug rod (25) is slidably connected through the rotating plate (24). A positioning ring (27) is fixedly installed at the top of the connecting box (18). Two plug holes (28) are symmetrically opened at the top of the positioning ring (27). The plug rod (25) is movably plugged into the two plug holes (28) respectively. A tension spring (26) located on the rotating plate (24) is sleeved on the plug rod (25). The top and bottom ends of the tension spring (26) are fixedly connected to the plug rod (25) and the rotating plate (24) respectively through hooks set on the top and bottom ends of the tension spring (26).

7. The experimental apparatus for simulating the grouting process of fault fracture zones as described in claim 1, characterized in that, The grouting mechanism includes a delivery pump (33) fixedly installed on one side of the top of the base plate (1). The suction end of the delivery pump (33) is used to connect with an external grout delivery pipeline. A hose (32) is fixedly installed on the output end of the delivery pump (33). A connecting pipe (31) is fixedly installed at the top of the hose (32). An installation pipe (30) corresponding to the position of the grouting groove is fixedly connected through the cover plate (5). One end of the connecting pipe (31) extends into the installation pipe (30) and is fixedly connected to the inner wall of one side of the installation pipe (30).

8. The experimental apparatus for simulating the grouting process of fault fracture zones as described in claim 7, characterized in that, A movable cover (34) is tightly slidably connected inside the mounting tube (30). The top of the movable cover (34) extends above the mounting tube (30). A drive motor (35) is fixedly installed on the top of the movable cover (34). The output shaft of the drive motor (35) extends into the movable cover (34) and a conveying screw (36) is fixedly installed. The bottom end of the conveying screw (36) passes through the mounting tube (30) and extends into the grouting tank. A mounting plate (37) located above the mounting tube (30) is also fixedly fitted on the movable cover (34). A second electric push rod (38) located below the mounting plate (37) is fixedly installed on the top of the cover plate (5). The output shaft of the second electric push rod (38) is fixedly connected to the bottom of the mounting plate (37).

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