Retaining wall strength testing equipment

Abstract

The utility model discloses a retaining wall strength testing device, and relates to the technical field of civil engineering detection. Comprising a test box, a groove formed in the upper end of the test box, a moving plate arranged on the inner wall of the groove in a sliding mode, three mounting grooves formed in the moving plate, a light-emitting mechanism arranged in the first mounting groove, a water spraying mechanism arranged in the second mounting groove and a pressure mechanism arranged in the third mounting groove. A supporting mechanism is arranged on the bottom surface in the test box; a retaining wall stone is placed at the upper end of the supporting mechanism; and a water discharging mechanism for discharging water is arranged on the water spraying mechanism. The device has the advantages of being capable of simulating the long-term erosion environment of acid rainwater, accurately testing the anti-pressure capability of the eroded retaining wall stone and enabling the test result to be closer to the actual use working condition.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering testing technology, specifically a retaining wall strength testing device. Background Technology

[0002] In the field of civil engineering, retaining walls, as an important retaining structure, are widely used in road, water conservancy, mining, and construction projects. Their main function is to resist lateral earth pressure, prevent slope collapse, and ensure the stability and safety of the engineering structure. With the continuous expansion of engineering construction scale and the increasing complexity of service environment, retaining walls are exposed to the natural environment for a long time and are subject to erosion and influence from various factors. Their structural strength and stability gradually decrease, posing potential hazards to engineering safety. Therefore, accurate and comprehensive testing of the strength of retaining walls, especially evaluating their mechanical properties after being subjected to complex environmental conditions, has become a key link in ensuring the safe operation of engineering projects.

[0003] Currently, there are various types of testing equipment for retaining wall strength, mainly used to detect the compressive and shear mechanical properties of retaining walls under vertical or lateral loads. These devices typically apply static or dynamic loads to retaining wall specimens, collect data using sensors, and then analyze their strength indicators. However, in actual use, retaining walls not only bear the effects of their own structure and external loads but are also significantly affected by natural environmental factors. Long-term erosion by acid rainwater is a crucial factor that cannot be ignored. Existing retaining wall strength testing equipment is often designed to simulate load effects while neglecting natural environmental factors, especially the impact of acid rainwater erosion on the mechanical properties of retaining wall stones. These devices cannot simulate the long-term erosion process of acid rainwater and therefore cannot accurately test the compressive strength of retaining wall stones after acid rainwater erosion. This leads to a significant deviation between the test results and the actual mechanical properties of the retaining wall in the actual use environment, making it difficult to provide a reliable basis for engineering design, maintenance, and reinforcement. This may result in inaccurate engineering safety assessments, leading to safety accidents or excessive maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a retaining wall strength testing device, which has the advantages of simulating the long-term erosion environment of acid rainwater, accurately testing the compressive strength of the retaining wall stones after erosion, and making the test results closer to the actual working conditions, thus solving the problems in the prior art.

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

[0006] A retaining wall strength testing device includes a test box, a groove opened at the upper end of the test box, a movable plate slidably disposed on the inner wall of the groove, three mounting slots opened on the movable plate, a light-emitting mechanism disposed in the first mounting slot, a water spraying mechanism disposed in the second mounting slot, and a pressure mechanism disposed in the third mounting slot.

[0007] The bottom of the test chamber is equipped with a support mechanism, and retaining wall stones are placed on the top of the support mechanism.

[0008] The water spraying mechanism is equipped with a water discharge mechanism for releasing water.

[0009] Preferably, one end of the test chamber has a feed trough, the inner wall of the feed trough is hinged to a movable frame, and the inner wall of the movable frame is fixed to a glass plate.

[0010] It is worth noting that the feed chute provides a convenient channel for placing and removing stones from the retaining wall, the hinged moving frame can be opened and closed flexibly, and when closed, it can ensure the sealing of the internal environment of the test chamber and reduce interference from external factors. The glass plate material does not affect the observation of the experimental process inside the test chamber, and can also play an isolation role.

[0011] Preferably, the light-emitting mechanism includes a first support frame fixed to the inner wall of the first mounting groove, a mounting plate placed on the upper end of the first support frame, and a sun lamp fixed to the lower end of the mounting plate, wherein the side wall of the mounting plate and the inner wall of the first mounting groove are in contact.

[0012] It is worth noting that the first support frame provides stable support for the mounting plate, ensuring the fixation of the sun lamp position. The mounting plate fits snugly against the inner wall of the first mounting groove, enhancing the structural stability and preventing the sun lamp from shaking during operation. The sun lamp can simulate a natural light environment, compensating for the influence of light factors during acid rain erosion.

[0013] Preferably, the pressure mechanism includes a fixed block placed on the inner wall of the third mounting slot, a third bearing frame fixed to the side wall of the fixed block, and a hydraulic cylinder fixed to the upper end of the fixed block. The output shaft of the hydraulic cylinder passes through the fixed block and is fixed to a pressure plate. The pressure plate can extend downward into the third mounting slot. The lower end of the third bearing frame and the upper end of the moving plate are in contact.

[0014] It is worth noting that the third bearing frame fits snugly against the moving plate, enhancing the overall stability of the pressure mechanism and preventing displacement of the hydraulic cylinder during operation. The hydraulic cylinder can provide stable pressure output, and the pressure plate acts evenly on the retaining wall stones, ensuring the accuracy of the pressure test. The fixed block plays a role in fixing and supporting the hydraulic cylinder, ensuring the stability of the force direction of the output shaft.

[0015] Preferably, the support mechanism includes a U-shaped bracket placed on the bottom of the inner wall of the test chamber and a pad placed on the upper end of the U-shaped bracket, with the upper end of the pad fitting against the lower end of the retaining wall stone.

[0016] It is worth noting that the U-shaped support structure is simple and stable, providing a solid support foundation for the pad and retaining wall stones. The pad can be replaced according to the shape and size of the retaining wall stones to ensure that the stones are placed flat and the force is even. When used together, the stones can be prevented from directly contacting the bottom surface of the test box, reducing the impact of uneven bottom surface on the test results.

[0017] Preferably, the water spraying mechanism includes a water tank placed on the inner wall of the second mounting slot, a second support frame fixed to the side wall of the water tank, a cover fixed to the upper end of the water tank, a fixed cylinder fixed to the upper end of the cover, a cylinder fixed to the upper end of the fixed cylinder, a water pump fixed to the upper end of the second support frame, and one end of a water pumping pipe fixed to the outlet end of the water pump. The other end of the water pumping pipe extends into the interior of the test chamber. The lower end of the second support frame and the upper end of the movable plate are attached together. A water injection pipe is fixedly connected through the upper end of the fixed cylinder. A solenoid valve is provided on the water injection pipe. Multiple water outlet pipes are fixedly connected through the lower end of the water tank. The water discharge mechanism is located on the output end of the cylinder. The water outlet pipe is located inside the second mounting slot. The outlet end of the water pump is connected to the inlet end of the fixed cylinder through a pipe.

[0018] It is worth noting that: the second support frame enhances the connection stability between the water spraying mechanism and the moving plate; the water tank is used to store acidic solution; multiple water outlet pipes can achieve uniform water spraying on the retaining wall stones to simulate the washing effect of acidic rainwater; the water injection pipe and solenoid valve facilitate the control of the injection volume of acidic solution; the water pump and water suction pipe can realize the recycling of solution and save resources; the cylinder and water discharge mechanism work together to accurately control the water output and spraying time.

[0019] Preferably, the water discharge mechanism includes a baffle frame fixed to the inner wall of the water tank and a lifting block slidably disposed on the inner wall of the baffle frame, and the lower end of the output shaft of the cylinder is fixed to the upper end of the lifting block.

[0020] It is worth noting that the blocking frame guides and limits the lifting block, ensuring that the lifting block slides stably in the vertical direction. The lifting block is driven by a cylinder, which allows it to move out from the inner wall of the blocking frame, so that the water at the top of the blocking frame can flow downward. This allows for precise control of the amount of acid solution sprayed and the spraying time, meeting the simulation requirements of different erosion levels, thereby improving the accuracy and controllability of acid rainwater erosion simulation.

[0021] Preferably, the water discharge mechanism is a lifting plate fixed to the lower end of the cylinder output shaft. The side wall of the lifting plate is in contact with the inner wall of the water tank. When the lifting plate moves upward and disengages from the upper end of the water tank, the lifting plate enters the internal space of the second bearing frame. At this time, there is a gap between the side wall of the lifting plate and the inner wall of the second bearing frame.

[0022] It is worth noting that the lifting plate is in close contact with the inner wall of the water tank, and the flow of the solution in the water tank can be directly controlled by its own lifting. The structure is simple and the operation is convenient. When the lifting plate enters the second bearing frame, the gap between it and the inner wall avoids jamming when the lifting plate moves, ensuring the smooth operation of the mechanism. The water output formed by this gap is small, which can significantly reduce the water output and simulate the impact of little rain on the retaining wall stones.

[0023] Preferably, two support blocks are fixed to both sides of the test box. The support blocks are L-shaped, and the upper corners of the two support blocks on the same side are attached to the lower corners of the moving plate.

[0024] It is worth noting that the L-shaped support block has a simple structure, strong load-bearing capacity, and can provide stable support for the moving plate. It fits into the lower corner of the moving plate, distributing the weight of the moving plate and its upper mechanism, which can prevent the moving plate from deforming or displacing due to uneven force.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] 1. In terms of environmental simulation, in the light-emitting mechanism, the sun lamp can be stably placed on the first support frame through the mounting plate. When working, it can continuously simulate natural light. In conjunction with the water spraying mechanism, it forms a more realistic natural erosion environment. When the water spraying mechanism is running, if a water discharge mechanism including a blocking frame and a lifting block is used, the cylinder drives the lifting block to slide in the blocking frame. When the lifting block moves out of the blocking frame, the acidic solution in the water tank can be evenly sprayed onto the retaining wall stones through the water outlet pipe. The spraying time and amount can be precisely controlled to simulate acid rain erosion of different intensities. If a lifting plate is used as the water discharge mechanism, the cylinder drives the lifting plate to rise and fall in the water tank. When the lifting plate leaves the upper end of the water tank and enters the second support frame, it uses the gap between itself and the inner wall of the second support frame to achieve a small amount of water spraying, which can simulate the effect of light rain. At the same time, the water pump draws the solution in the test chamber back to the fixed cylinder through the water pumping pipe, which can realize the recycling of the solution, which saves resources and ensures the stability of the erosion environment, solving the problem of incomplete simulation of environmental factors in traditional tests.

[0027] 2. In terms of pressure testing, the hydraulic cylinder of the pressure mechanism is fixed on the fixed block, and the third bearing frame is in close contact with the moving plate to ensure overall stability. The output shaft of the hydraulic cylinder pushes the pressure plate down, which can be evenly applied to the retaining wall stones. Different pressures can be applied precisely to simulate the actual load borne by the retaining wall, thus solving the problem of inaccurate results caused by uneven force during pressure testing.

[0028] 3. The U-shaped support can provide stable support, and the pad can be replaced according to the shape and size of the stone to ensure that the stone is placed flat and the force is even, avoiding the impact of placement problems on the test results. It solves the problems of inconvenience in picking up and placing and unstable support in traditional testing. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0030] Figure 2 This is a three-dimensional cross-sectional structural diagram of the light-emitting mechanism and the pressure mechanism of this utility model;

[0031] Figure 3 This is a three-dimensional structural diagram of the movable frame of this utility model;

[0032] Figure 4 This is a three-dimensional structural diagram of the retaining wall stone block of this utility model;

[0033] Figure 5 This is a three-dimensional structural diagram of the water spray mechanism of this utility model;

[0034] Figure 6 This is a three-dimensional cross-sectional structural diagram of the water spraying mechanism of this utility model;

[0035] Figure 7 This is a three-dimensional structural diagram of the first embodiment of the water discharge mechanism of this utility model;

[0036] Figure 8 This is a three-dimensional structural diagram of the second embodiment of the water discharge mechanism of this utility model.

[0037] Reference numerals: 1. Test box; 11. Feed trough; 12. Moving frame; 13. Glass plate; 14. U-shaped support; 15. Pad; 16. Retaining wall stone; 2. Groove; 3. Moving plate; 31. Support block; 4. Mounting groove; 5. Light-emitting mechanism; 51. First bearing frame; 52. Mounting plate; 53. Sun lamp; 6. Water spraying mechanism; 61. Water tank; 62. Second bearing frame; 63. Cover; 64. Fixed cylinder; 65. Water pump; 66. Cylinder; 6601. Blocking frame; 6602. Lifting block; 6603. Lifting plate; 67. Water suction pipe; 68. Water injection pipe; 69. Solenoid valve; 610. Water outlet pipe; 7. Pressure mechanism; 71. Third bearing frame; 72. Fixed block; 73. Hydraulic cylinder; 74. Pressure plate. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] To address the problem that existing retaining wall strength testing equipment only focuses on simulating load effects, neglecting the impact of natural environmental factors such as acid rainwater on the mechanical properties of retaining wall stones, and cannot simulate the long-term scouring process of acid rainwater, resulting in significant deviations between test results and the actual mechanical properties of retaining walls in real-world use environments, and thus failing to provide reliable data for engineering design, maintenance, and reinforcement, the following technical solution is proposed. Please refer to [link / reference]. Figures 1-8 ;

[0040] A retaining wall strength testing device includes a test box 1, a groove 2 opened at the upper end of the test box 1, a movable plate 3 slidably disposed on the inner wall of the groove 2, three mounting slots 4 opened on the movable plate 3, a light-emitting mechanism 5 disposed in the first mounting slot 4, a water spraying mechanism 6 disposed in the second mounting slot 4, and a pressure mechanism 7 disposed in the third mounting slot 4.

[0041] The bottom of the test chamber 1 is equipped with a support mechanism, and retaining wall stones 16 are placed on the upper end of the support mechanism.

[0042] The water spraying mechanism 6 is equipped with a water discharge mechanism for discharging water.

[0043] In use, the retaining wall stone block 16 is placed on the support mechanism, and then external acidic water is injected into the fixed cylinder 64. The water discharge mechanism is turned on so that the acidic water falls on the retaining wall stone block 16, which can simulate the acidic rainwater washing over the retaining wall stone block 16 in the real environment. Then, the moving plate 3 is moved so that the light-emitting mechanism 5 is above the retaining wall stone block 16, and the light-emitting mechanism 5 is turned on to illuminate the retaining wall stone block 16. Finally, the moving plate 3 is moved so that the pressure mechanism 7 is moved above the retaining wall stone block 16, and the pressure mechanism 7 is turned on to apply pressure to the retaining wall stone block 16. The change of the retaining wall stone block 16 under a certain pressure is observed, which can determine the pressure resistance of the retaining wall stone block 16 after being washed by acidic water and after being illuminated. In this way, the strength of the retaining wall stone block 16 can be determined.

[0044] In this embodiment, specifically: a feed trough 11 is provided through one end of the test box 1, a movable frame 12 is hinged to the inner wall of the feed trough 11, and a glass plate 13 is fixed to the inner wall of the movable frame 12.

[0045] In this embodiment, specifically: the light-emitting mechanism 5 includes a first support frame 51 fixed to the inner wall of the first mounting groove 4, a mounting plate 52 placed on the upper end of the first support frame 51, and a sun lamp 53 fixed to the lower end of the mounting plate 52. The side wall of the mounting plate 52 is in contact with the inner wall of the first mounting groove 4.

[0046] In this embodiment, specifically: the pressure mechanism 7 includes a fixed block 72 placed on the inner wall of the third mounting groove 4, a third bearing frame 71 fixed to the side wall of the fixed block 72, and a hydraulic cylinder 73 fixed to the upper end of the fixed block 72. The output shaft of the hydraulic cylinder 73 passes through the fixed block 72 and is fixed to a pressure plate 74. The pressure plate 74 can extend downwards out of the third mounting groove 4. The lower end of the third bearing frame 71 and the upper end of the moving plate 3 are in contact.

[0047] In this embodiment, specifically: the support mechanism includes a U-shaped bracket 14 placed on the bottom surface of the inner wall of the test box 1 and a pad 15 placed on the upper end of the U-shaped bracket 14, with the upper end of the pad 15 and the lower end of the retaining wall stone block 16 attached together.

[0048] In this embodiment, specifically: the water spraying mechanism 6 includes a water tank 61 placed on the inner wall of the second mounting groove 4, a second support frame 62 fixed to the side wall of the water tank 61, a cover 63 fixed to the upper end of the water tank 61, a fixed cylinder 64 fixed to the upper end of the cover 63, a cylinder 66 fixed to the upper end of the fixed cylinder 64, a water pump 65 fixed to the upper end of the second support frame 62, and one end of a water pump pipe 67 fixed to the outlet end of the water pump 65. The other end of the water pump pipe 67 extends into the interior of the test chamber 1. The lower end of the second support frame 62 and the upper end of the moving plate 3 are attached together. A water injection pipe 68 is fixedly connected through the upper end of the fixed cylinder 64. A solenoid valve 69 is provided on the water injection pipe 68. Multiple water outlet pipes 610 are fixedly connected through the lower end of the water tank 61. The water discharge mechanism is set on the output end of the cylinder 66. The water outlet pipes 610 are located inside the second mounting groove 4. The outlet end of the water pump 65 is connected to the inlet end of the fixed cylinder 64 through a pipe.

[0049] In this embodiment, specifically: two support blocks 31 are fixed to both sides of the test box 1. The support blocks 31 are L-shaped, and the upper corners of the two support blocks 31 on the same side are attached to the lower corners of the moving plate 3.

[0050] Example 1: In this example, the water discharge mechanism includes a blocking frame 6601 fixed to the inner wall of the water tank 61 and a lifting block 6602 slidably disposed on the inner wall of the blocking frame 6601. The lower end of the output shaft of the cylinder 66 is fixed to the upper end of the lifting block 6602.

[0051] The blocking frame 6601 guides and limits the lifting block 6602, ensuring that the lifting block 6602 slides stably in the vertical direction. The cylinder 66 drives the lifting block 6602 to move, which can precisely control the degree to which the lifting block 6602 moves out of the inner wall of the blocking frame 6601, thereby accurately adjusting the spray volume and spray time of the solution in the water tank 61. This can meet the simulation requirements of different erosion levels and improve the accuracy and controllability of acid rainwater erosion simulation.

[0052] Example 2: In this example, the water discharge mechanism is a lifting plate 6603 fixed to the lower end of the output shaft of cylinder 66. The side wall of the lifting plate 6603 is in contact with the inner wall of the water tank 61. When the lifting plate 6603 moves upward and disengages from the upper end of the water tank 61, the lifting plate 6603 enters the internal space of the second bearing frame 62. At this time, there is a gap between the side wall of the lifting plate 6603 and the inner wall of the second bearing frame 62.

[0053] The lifting plate 6603 is attached to the inner wall of the water tank 61 and can directly control the flow of the solution in the water tank 61 by its own lifting. The structure is simple and easy to operate. When the lifting plate 6603 enters the interior of the second bearing frame 62, the gap formed between it and the inner wall of the second bearing frame 62 can realize a small water supply, which can simulate the impact of less rain on the retaining wall stones.

[0054] Working principle: First, by opening the movable frame 12 hinged to the inner wall of the feed chute 11 of the test box 1, the retaining wall stone block 16 is placed on the pad plate 15 of the bottom support mechanism inside the test box 1. The pad plate 15 is placed on the upper end of the U-shaped support 14, and the U-shaped support 14 provides support for the pad plate 15 and the retaining wall stone block 16.

[0055] Subsequently, the movable frame 12 is closed, and external acidic water is injected into the fixed cylinder 64 of the spraying mechanism 6 through the water injection pipe 68. The solenoid valve 69 on the water injection pipe 68 controls the water injection process. Then, the water discharge mechanism is opened. If it is the water discharge mechanism of Embodiment 1, the cylinder 66 drives the lifting block 6602 to slide on the inner wall of the blocking frame 6601, so that the acidic water flows out from the outlet pipe 610 at the lower end of the water tank 61 and falls on the retaining wall stone block 16. If it is the water discharge mechanism of Embodiment 2, the cylinder 66 drives the lifting plate 6603 to move upward and leave the upper end of the water tank 61 to enter the interior of the second bearing frame 62. The acidic water flows out from the gap between the lifting plate 6603 and the inner wall of the second bearing frame 62 and the outlet pipe 610 to the retaining wall stone block 16, thereby simulating the scouring of acidic rainwater. At the same time, the water pump 65 pumps the excess water in the test box 1 back to the fixed cylinder 64 through the water pumping pipe 67 to achieve recycling.

[0056] Then, the moving plate 3 is pushed manually or by using existing technology such as cylinders to slide on the inner wall of the groove 2 at the upper end of the test box 1. The L-shaped support block 31 supports the moving plate 3, so that the light-emitting mechanism 5 in the first mounting groove 4 is located above the retaining wall stone block 16. The sun lamp 53 is turned on to simulate the illumination of the retaining wall stone block 16. The sun lamp 53 is installed at the lower end of the mounting plate 52, and the mounting plate 52 is placed at the upper end of the first bearing frame 51.

[0057] Finally, the moving plate 3 is pushed again manually or by using existing technology such as cylinders to position the pressure mechanism 7 in the third mounting slot 4 above the retaining wall stone block 16. The hydraulic cylinder 73 is activated, and the output shaft of the hydraulic cylinder 73 drives the pressure plate 74 to move downward and apply pressure to the retaining wall stone block 16. The changes of the retaining wall stone block 16 under pressure are observed through the glass plate 13 to determine its strength after being washed by acidic water and exposed to light.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A retaining wall strength testing device, characterized in that: It includes a test box (1), a groove (2) opened at the upper end of the test box (1), a movable plate (3) slidably disposed on the inner wall of the groove (2), three mounting slots (4) opened on the movable plate (3), a light-emitting mechanism (5) disposed in the first mounting slot (4), a water spraying mechanism (6) disposed in the second mounting slot (4), and a pressure mechanism (7) disposed in the third mounting slot (4). The bottom of the test box (1) is equipped with a support mechanism, and retaining wall stones (16) are placed on the upper end of the support mechanism. The water spraying mechanism (6) is equipped with a water discharge mechanism for discharging water.

2. The retaining wall strength testing device according to claim 1, characterized in that: The test box (1) has a feed trough (11) through one end, and a movable frame (12) is hinged to the inner wall of the feed trough (11). A glass plate (13) is fixed to the inner wall of the movable frame (12).

3. The retaining wall strength testing device according to claim 1, characterized in that: The light-emitting mechanism (5) includes a first support frame (51) fixed to the inner wall of the first mounting groove (4), a mounting plate (52) placed on the upper end of the first support frame (51), and a sun lamp (53) fixed to the lower end of the mounting plate (52). The side wall of the mounting plate (52) is attached to the inner wall of the first mounting groove (4).

4. The retaining wall strength testing device according to claim 1, characterized in that: The pressure mechanism (7) includes a fixed block (72) placed on the inner wall of the third mounting slot (4), a third bearing frame (71) fixed to the side wall of the fixed block (72), and a hydraulic cylinder (73) fixed to the upper end of the fixed block (72). The output shaft of the hydraulic cylinder (73) passes through the fixed block (72) and is fixed to a pressure plate (74). The pressure plate (74) can extend downward into the third mounting slot (4). The lower end of the third bearing frame (71) and the upper end of the moving plate (3) are in contact.

5. The retaining wall strength testing device according to claim 1, characterized in that: The support mechanism includes a U-shaped bracket (14) placed on the bottom of the inner wall of the test box (1) and a pad (15) placed on the upper end of the U-shaped bracket (14). The upper end of the pad (15) is attached to the lower end of the retaining wall stone block (16).

6. The retaining wall strength testing device according to claim 1, characterized in that: The water spraying mechanism (6) includes a water tank (61) placed on the inner wall of the second mounting slot (4), a second support frame (62) fixed to the side wall of the water tank (61), a cover (63) fixed to the upper end of the water tank (61), a fixing cylinder (64) fixed to the upper end of the cover (63), a cylinder (66) fixed to the upper end of the fixing cylinder (64), a water pump (65) fixed to the upper end of the second support frame (62), and one end of a water suction pipe (67) fixed to the outlet end of the water pump (65), the other end of the water suction pipe (67) extending... Extending into the interior of the test box (1), the lower end of the second support frame (62) and the upper end of the moving plate (3) are attached together. A water injection pipe (68) is fixedly connected through the upper end of the fixed cylinder (64). A solenoid valve (69) is provided on the water injection pipe (68). Multiple water outlet pipes (610) are fixedly connected through the lower end of the water tank (61). The water discharge mechanism is set on the output end of the cylinder (66). The water outlet pipe (610) is located inside the second mounting slot (4). The liquid outlet of the water pump (65) is connected to the liquid inlet of the fixed cylinder (64) through a pipe.

7. The retaining wall strength testing device according to claim 6, characterized in that: The water discharge mechanism includes a baffle frame (6601) fixed to the inner wall of the water tank (61) and a lifting block (6602) slidably disposed on the inner wall of the baffle frame (6601). The lower end of the output shaft of the cylinder (66) is fixed to the upper end of the lifting block (6602).

8. The retaining wall strength testing device according to claim 6, characterized in that: The water discharge mechanism is a lifting plate (6603) fixed to the lower end of the output shaft of the cylinder (66). The side wall of the lifting plate (6603) is in contact with the inner wall of the water tank (61). When the lifting plate (6603) moves upward and disengages from the upper end of the water tank (61), the lifting plate (6603) enters the internal space of the second bearing frame (62). At this time, there is a gap between the side wall of the lifting plate (6603) and the inner wall of the second bearing frame (62).

9. The retaining wall strength testing device according to claim 1, characterized in that: Two support blocks (31) are fixed to both sides of the test box (1). The support blocks (31) are L-shaped, and the upper corners of the two support blocks (31) on the same side are attached to the lower corners of the moving plate (3).

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