Model box testing device

Abstract

The invention provides a model box test device which comprises a first box body and a second box body which are detachably connected, the top surfaces and the side surfaces, close to each other, of the first box body and the second box body are open, a water outlet valve is arranged on the lower portion of the side surface, away from the second box body, of the first box body, the first box body can be filled with soil, and the second box body can be filled with water. A guide rail assembly is arranged on the lower portion of the side face of the first box body in the length direction of the first box body, a gate-type reaction frame is arranged on the first box body in a crossing mode, the lower end of the gate-type reaction frame is connected with the guide rail assembly, a loading device is arranged on the gate-type reaction frame and used for applying loads to soil, and a first hydraulic oil cylinder is arranged in the second box body. A wave making plate is arranged at the driving end of the first hydraulic oil cylinder and used for driving the wave making plate to make waves towards the interior of the first box body. According to the invention, split design of wave simulation and mechanical loading is realized, simulation test conditions can be flexibly changed, and slope stability can be accurately evaluated.

Description

Technical Field

[0001] This invention relates to the field of geotechnical engineering testing technology, and in particular to a model box testing device. Background Technology

[0002] Slope stability is crucial for the safety of engineering projects such as railways, highways, and dams; slope failures can lead to enormous economic losses. Accurately evaluating slope stability is a major problem that many researchers need to solve. Slope stability is a highly complex issue, influenced by various factors including geological conditions, environmental conditions, and external forces. Currently, research primarily employs theoretical analysis, numerical simulation, model testing, and field testing. While model testing is an important and effective method for studying this problem, it still suffers from limitations in considering only a few factors and exhibiting significant discrepancies with actual conditions.

[0003] Utility model patent CN219369503U discloses a test device for simulating lateral seepage erosion of calcareous sand dam foundations under wave impact. The device includes a box, a dam foundation simulation unit, a wave simulation unit, a mechanical loading unit, and a monitoring unit housed within the box. The dam foundation simulation unit is located on one side of the box, and the wave simulation unit is located on the opposite side. The mechanical loading unit is mounted on the dam foundation simulation unit and used to pressurize it. The monitoring unit is used to monitor and collect change data from the dam foundation simulation unit. Although this device simulates test conditions under the combined effects of top load and lateral waves, the wave simulation unit and the mechanical loading unit are integrated, and the simulated test conditions are difficult to change flexibly, making it difficult to reliably evaluate slope stability. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a model box test device that achieves a separate design for wave simulation and mechanical loading, allowing for flexible changes in simulation test conditions and accurate evaluation of slope stability.

[0005] To achieve the above objectives, the present invention provides a model box testing device, comprising a first box and a second box that are detachably connected. The top surface and adjacent sides of the first box and the second box are open. A water outlet valve is provided on the lower part of the side of the first box away from the second box. Soil can be filled into the first box, and water can be filled into the second box. A guide rail assembly is provided on the lower part of the side of the first box along its length. A portal reaction frame is provided across the first box. The lower end of the portal reaction frame is connected to the guide rail assembly. A loading device is provided on the portal reaction frame for applying a load to the soil. A first hydraulic cylinder is provided inside the second box. A wave-making plate is provided on the drive end of the first hydraulic cylinder for driving the wave-making plate to create waves inside the first box.

[0006] In this invention, by setting up a detachably connected first and second box, not only can the first and second box be connected to simultaneously simulate wave generation and load application tests on the soil, but the first and second box can also be separated for separate testing, making it more flexible to use. By setting a guide rail assembly between the first box and the gantry reaction frame, the position of the gantry reaction frame and the loading device on the first box can be changed, thereby conveniently applying loads to the soil in the first box. By driving the wave-generating plate with the first hydraulic cylinder to push the water flow in the second box toward the first box where the soil is located, the scouring of the dam by the surge process can be simulated. By collecting the water volume per unit time of the outlet valve, the seepage flow under specific surge and mechanical loads can be analyzed to accurately evaluate the stability of the slope.

[0007] Optionally, two filter baffles are provided in the first box body between the soil and the opening side of the first box body. Both filter baffles are parallel to the wave-making plate, and a spacer cavity is provided between the two filter baffles. The spacer cavity is used to fill filter material.

[0008] In this invention, by setting two filter baffles and filling the space between the two filter baffles with filter media with larger particles, it is possible to prevent soil from being washed away by the water flow and entering the second chamber during the wave generation process, thereby reducing the impact on wave generation and soil loss.

[0009] Optionally, the guide rail assembly includes a guide rail body, a track wheel, and a locking screw. The guide rail body is fixedly connected to the lower side of the first housing and extends along the length of the first housing. The gantry reaction frame includes a crossbeam and two columns disposed at both ends of the crossbeam. The track wheel is disposed at the lower end of the column and rolls with the guide rail body. A first locking hole is provided at the lower end of the column. A plurality of second locking holes are provided on the guide rail body at intervals along its length. The locking screw can pass through both the first locking hole and the second locking hole simultaneously, and its end can be screwed into a locking block for fixation.

[0010] In this invention, since the guide rail body is fixedly mounted on the first housing, when the gantry reaction frame is moved to change the loading position of the loading device, it is only necessary to release the locking screw from the second locking hole, allowing the track wheel to roll into position on the guide rail body, and then lock and fix the second locking hole at that position using the locking screw. This achieves the adjustment and fixation of the loading position, making the operation simple and convenient. Even if the contact surface at the bottom of the first housing is uneven, since the gantry reaction frame directly contacts the guide rail body through the track wheel, the bottom surface of the track wheel is always parallel to the plane of the guide rail body. Consequently, the lower end of the gantry reaction frame is always parallel to the guide rail body, meaning there will be no deviation between the first and second locking holes. This ensures that the locking screw can be smoothly inserted into the first and second locking holes. Furthermore, by screwing a locking block into the lower end of the locking screw, the top surface of the locking block is pressed against the bottom surface of the guide rail body, thus providing a stable and reliable locking fixation for the gantry reaction frame.

[0011] Optionally, the lower end of the column is formed with a support plate, the track wheel is disposed at the bottom of the support plate, the first locking hole is opened on the support plate and is offset from the position of the track wheel, the support plate is provided with a clamp plate, the clamp plate is a C-shaped plate with its opening facing the track wheel, the upper part of the clamp plate is fixedly connected to the top surface of the support plate, and the lower part of the clamp plate extends into the bottom of the guide rail.

[0012] In this invention, the support plate provides an installation base for the track wheel, while also improving the support stability of the gantry reaction frame and facilitating the opening of the first locking hole. Since the lower ends of both columns are equipped with clamping plates, and the openings of both clamping plates face the corresponding track wheel (i.e., the openings of the two clamping plates are opposite to each other), when the gantry reaction frame and track wheel tend to shift laterally, the clamping plates in the opposite direction engage with the corresponding track wheel and guide rail body, thus playing a lateral limiting role. This ensures that the entire device cannot detach laterally, avoids tipping accidents, and improves safety.

[0013] Optionally, the loading device includes a second hydraulic cylinder and a loading plate. There are two second hydraulic cylinders and two loading plates. The two second hydraulic cylinders are arranged at intervals relative to each other, and their fixed ends are connected to the bottom of the crossbeam of the portal reaction frame. The two loading plates are arranged one-to-one at the driving ends of the two second hydraulic cylinders and can be in contact with the soil and apply load to it.

[0014] In this invention, by setting two second hydraulic cylinders and two loading plates, the requirements of two different loading load scenarios can be simulated simultaneously, thereby improving the applicability of the device.

[0015] Optionally, the first box is provided with a partition plate and two sets of partition strips. The two sets of partition strips are fixedly installed on two opposite inner walls of the first box. Each set of partition strips has at least two strips, and the at least two partition strips are arranged in parallel and spaced apart. The end of the partition plate can be inserted downward into the gap between two adjacent partition strips to divide the first box into two spatial chambers along the length or width direction.

[0016] In this invention, if a partition plate is provided along the length of the first housing, dividing the first housing into two elongated test slots, the two test slots can correspond one-to-one with two second hydraulic cylinders and two loading plates, that is, each test slot can be independently configured with one second hydraulic cylinder and one loading plate. Both test slots can realize mechanical loading and simulated wave generation tests, and the working conditions in the two test slots can be carried out simultaneously, thus accelerating the test process. If a partition plate is provided along the width of the first housing, dividing the first housing into two relatively square housing cavities, two sets of tests can be arranged simultaneously in the two housing cavities, and mechanical loading tests can be carried out sequentially, thus accelerating the test process.

[0017] Optionally, it also includes two sets of guide components, which are symmetrically spaced on both sides of the first hydraulic cylinder. Each set of guide components includes a support column, two sliding sleeves, and two guide rods. The lower end of the support column is connected to the inner wall of the second housing. Two through holes are opened at intervals on the support column. The two sliding sleeves are fixedly installed in the two through holes one by one, and the two guide rods are slidably installed in the two sliding sleeves one by one. The four guide rods of the two sets of guide components are arranged in a rectangular array.

[0018] In this invention, the guide rod structure formed by the two sets of guide components and arranged in a rectangular array can ensure the guiding effect on the wave-making plate. When the first hydraulic cylinder drives the wave-making plate to move, the four guide rods move axially along the four sliding sleeves in a corresponding manner. The center of the wave-making plate on the back side is supported by the first hydraulic cylinder, and the four corners are supported by the four guide rods, so that the entire surface of the wave-making plate can be evenly stressed to achieve stable wave generation.

[0019] Optionally, the first box includes a main frame, a bottom plate, and multiple transparent side panels. The bottom plate is fixedly installed at the bottom of the main frame to support the soil, and the multiple transparent side panels are fixedly installed on the sides of the main frame.

[0020] In this invention, by setting multiple transparent and visible side plates, the loading state of the soil can be observed in real time, and after the first box is divided into two narrow test troughs by the partition plate, the two-dimensional plane model where the contact surface between the soil and the transparent and visible side plates is located can be observed.

[0021] Optionally, a sealing plate is detachably sealed between the first box and the second box. A heating plate is provided inside the bottom plate of the box corresponding to the soil below. A liquid inlet pipe is provided on the top of the opening side of the first box. The inlet end of the liquid inlet pipe is connected to a water tank on the external lifting frame through a pipe. The outlet end of the liquid inlet pipe extends into the first box.

[0022] In this invention, when it is necessary to simulate wave generation in the soil of the first chamber, the sealing plate can be removed to connect the first chamber and the second chamber. When it is necessary to simulate high water head operation in the soil of the first chamber, the sealing design of the first chamber is achieved by installing the sealing plate. The height of the external lifting frame and the water tank can be adjusted to achieve free adjustment of the water head height. The high-level water flow is transported to the liquid inlet pipe through the pipeline and enters the first chamber. The soil is heated by the heating plate to simulate the high temperature and high water pressure environment in the high ground temperature tunnel scenario.

[0023] Optionally, the bottom of the first housing has multiple wheels arranged in a rectangular array, and multiple feet are provided on the bottom perimeter of the first housing. The side of the second housing opposite to the first housing is fixedly provided with multiple diagonal braces, and the lower ends of the multiple diagonal braces are fixedly provided with multiple support base plates.

[0024] In this invention, by setting multiple ground wheels, the first box can be moved conveniently. Once in place, the extension height of multiple feet is adjusted to lift the multiple ground wheels off the ground, thereby achieving stable support for the box. At the same time, multiple inclined bracing brackets and multiple supporting base plates support the second box, thereby supporting the entire device.

[0025] Beneficial effects:

[0026] 1. By setting up a detachable first and second box, not only can the first and second boxes be connected to simultaneously simulate wave generation and load loading tests on the soil, but the first and second boxes can also be separated and tested separately, making it more flexible to use.

[0027] 2. By setting a guide rail assembly between the first box and the portal reaction frame, the position of the portal reaction frame and the loading device on the first box can be changed, thereby conveniently applying load to the soil in the first box.

[0028] 3. By driving the wave-generating plate with the first hydraulic cylinder, the water flow in the second tank is pushed towards the first tank where the soil is located. This can simulate the scouring of the dam by the surge process. By collecting the water volume per unit time of the outlet valve, the seepage flow under specific surge and mechanical loads can be analyzed to accurately evaluate the stability of the slope. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a first structural schematic diagram of a model box testing device disclosed in this invention;

[0031] Figure 2 This is a schematic diagram of the second structure of a model box testing device disclosed in this invention;

[0032] Figure 3 This is a schematic diagram of the overall structure of the second housing disclosed in this invention;

[0033] Figure 4 This is a partial structural schematic diagram of the second housing disclosed in this invention;

[0034] Figure 5 This is a schematic diagram of the connection structure between the portal reaction frame and the loading device disclosed in this invention;

[0035] Figure 6 This is a partial cross-sectional view of the connection between the portal reaction frame and the guide rail assembly disclosed in this invention;

[0036] Figure 7 This is a schematic diagram of the hydraulic control device disclosed in this invention.

[0037] Figure label:

[0038] 1. First housing; 11. Outlet valve; 12. Filter baffle; 13. Divider plate; 131. Divider baffle strip; 14. Main frame; 15. Bottom plate; 16. Transparent side panel; 17. Inlet pipe; 18. Ground wheel; 19. Foot; 2. Second housing; 21. First hydraulic cylinder; 22. Wavemaker; 23. Guide assembly; 231. Support column; 232. Sliding sleeve; 233. Guide rod; 24. Diagonal brace; 241. Support base plate; 3. Guide rail assembly; 1. Guide rail body; 311. Second locking hole; 32. Track wheel; 33. Locking screw; 34. Locking block; 4. Portal reaction frame; 41. Crossbeam; 42. Column; 43. Support plate; 431. First locking hole; 44. Clamp plate; 5. Loading device; 51. Second hydraulic cylinder; 52. Loading plate; 6. Sealing plate; 7. Hydraulic control device; 71. First oil pump; 72. Second oil pump; 73. Oil pipeline; 74. Oil motor; 75. Oil valve.

[0039] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0042] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] See Figures 1 to 3According to an embodiment of the present invention, a model box test device includes a first box 1 and a second box 2 that are detachably connected. The top surface and adjacent sides of the first box 1 and the second box 2 are open. A water outlet valve 11 is provided on the lower part of the side of the first box 1 away from the second box 2. Soil can be filled into the first box 1 and water can be filled into the second box 2. A guide rail assembly 3 is provided on the lower part of the side of the first box 1 along its length direction. A portal reaction frame 4 is provided across the first box 1. The lower end of the portal reaction frame 4 is connected to the guide rail assembly 3. A loading device 5 is provided on the portal reaction frame 4. The loading device 5 is used to apply a load to the soil. A first hydraulic cylinder 21 is provided inside the second box 2. A wave-making plate 22 is provided on the driving end of the first hydraulic cylinder 21 and is used to drive the wave-making plate 22 to create waves in the first box 1.

[0044] In this invention, by setting up a detachably connected first box 1 and second box 2, not only can the first box 1 and the second box 2 be connected to simultaneously simulate wave generation and load application tests on the soil, but the first box 1 and the second box 2 can also be separated and tested separately, making it more flexible to use. By setting a guide rail assembly 3 between the first box 1 and the portal reaction frame 4, the position of the portal reaction frame 4 and the loading device 5 on the first box 1 can be changed, thereby conveniently applying loads to the soil in the first box 1. By driving the wave-generating plate 22 through the first hydraulic cylinder 21, the water flow in the second box 2 is pushed towards the first box 1 where the soil is located, which can simulate the scouring of the dam by the surge process. By collecting the water volume per unit time of the outlet valve 11, the seepage flow under specific surge and mechanical loads can be analyzed to accurately evaluate the stability of the slope.

[0045] Specifically, a flow meter is installed on the outlet valve 11, which can more conveniently measure the seepage flow of the soil. Multiple outlet valves 11 and flow meters can be set to avoid the test results being affected by blockage or other malfunctions of a single outlet valve 11. After the test, the status of multiple outlet valves 11 is checked to ensure that they are unobstructed.

[0046] Specifically, by adjusting the extension and retraction speed and stroke of the first hydraulic cylinder 21, the wave-generating plate 22 can generate waves of different intensities. The load on the soil can be adjusted by regulating the load of the loading device 5. By controlling a single variable, the effects of different wave intensities or loads on soil slopes can be studied, or the effects of the same wave intensities and loads on different soil slopes can be investigated.

[0047] See Figure 1In some embodiments of the present invention, two filter partitions 12 are provided inside the first box 1 between the soil and the opening side of the first box 1. Both filter partitions 12 are parallel to the wave-making plate 22. A spacer cavity is provided between the two filter partitions 12, and the spacer cavity is used to fill filter material.

[0048] In this invention, by setting two filter baffles 12 and filling the space between the two filter baffles 12 with filter media with larger particles, it is possible to prevent soil from being washed away by the water flow and entering the second box 2 during the wave generation process, thereby reducing the impact on wave generation and soil loss.

[0049] See Figure 1 , Figure 5 and Figure 6 In some embodiments of the present invention, the guide rail assembly 3 includes a guide rail body 31, a track wheel 32, and a locking screw 33. The guide rail body 31 is fixedly connected to the lower side of the first housing 1 and extends along the length direction of the first housing 1. The gantry reaction frame 4 includes a crossbeam 41 and two columns 42 disposed at both ends of the crossbeam 41. The track wheel 32 is disposed at the lower end of the column 42 and rolls with the guide rail body 31. A first locking hole 431 is provided at the lower end of the column 42. A plurality of second locking holes 311 are provided on the guide rail body 31 at intervals along its length direction. The locking screw 33 can pass through the first locking hole 431 and the second locking holes 311 at the same time, and its end can be screwed into the locking block 34 for fixation.

[0050] In this invention, since the guide rail body 31 is fixedly mounted on the first housing 1, when the gantry reaction frame 4 is moved to change the loading position of the loading device 5, it is only necessary to release the locking screw 33 from the second locking hole 311 so that the track wheel 32 rolls into position on the guide rail body 31, and then lock and fix the second locking hole 311 at that position by the locking screw 33. The adjustment and fixation of the loading position can be realized, and the operation is simple and convenient. Even if the contact surface at the bottom of the first housing 1 is uneven, the gantry reaction frame 4 directly contacts the guide rail body 31 through the track wheel 32, ensuring that the bottom surface of the track wheel 32 is always parallel to the plane of the guide rail body 31. Consequently, the lower end of the gantry reaction frame 4 also remains parallel to the guide rail body 31, meaning that there will be no deviation between the first locking hole 431 and the second locking hole 311. This ensures that the locking screw 33 can be smoothly inserted into the first locking hole 431 and the second locking hole 311. Furthermore, by screwing the locking block 34 into the lower end of the locking screw 33, the top surface of the locking block 34 presses against the bottom surface of the guide rail body 31, thereby providing a stable and reliable locking and fixing for the gantry reaction frame 4.

[0051] See Figure 5 and Figure 6In some embodiments of the present invention, the lower end of the column 42 is formed with a support plate 43, the track wheel 32 is disposed at the bottom of the support plate 43, the first locking hole 431 is opened on the support plate 43 and is offset from the position of the track wheel 32, the support plate 43 is provided with a clamping plate 44, the clamping plate 44 is a C-shaped plate and the opening faces the track wheel 32, the upper part of the clamping plate 44 is fixedly connected to the top surface of the support plate 43, and the lower part of the clamping plate 44 extends into the bottom of the guide rail.

[0052] In this invention, the support plate 43 provides an installation base for the track wheel 32, while also improving the support stability of the gantry reaction frame 4 and facilitating the opening of the first locking hole 431. Since the lower ends of the two columns 42 are provided with clamping plates 44, and the openings of the two clamping plates 44 face the corresponding track wheel 32, that is, the openings of the two clamping plates 44 are arranged opposite to each other, when the gantry reaction frame 4 and the track wheel 32 have a tendency to shift laterally, the clamping plates 44 in the opposite direction are engaged with the corresponding track wheel 32 and the guide rail body 31, playing a lateral limiting role, so as to ensure that the entire device cannot be laterally dislodged, avoid the occurrence of tipping accidents, and improve safety.

[0053] See Figure 2 In some embodiments of the present invention, the loading device 5 includes a second hydraulic cylinder 51 and a loading plate 52. There are two second hydraulic cylinders 51 and two loading plates 52. The two second hydraulic cylinders 51 are arranged at intervals relative to each other, and their fixed ends are connected to the bottom of the crossbeam 41 of the portal reaction frame 4. The two loading plates 52 are arranged one-to-one at the driving ends of the two second hydraulic cylinders 51, and can be in contact with the soil and apply load to it.

[0054] In this invention, by setting two second hydraulic cylinders 51 and two loading plates 52, the requirements of two different loading load scenarios can be simulated simultaneously, thereby improving the applicability of the device.

[0055] For details, see Figure 7 A hydraulic control device 7 is also provided on the outside of the model box test device. The hydraulic control device 7 includes a mounting base, a first oil pump 71, a second oil pump 72, an oil pipeline 73, an oil motor 74, and an oil valve 75. The first oil pump 71 and the second oil pump 72 are mounted on the mounting base. The first oil pump 71 and the second oil pump 72 are each connected to an oil pipeline 73. The oil pipeline 73 is equipped with an oil motor 74 and an oil valve 75. The oil valve 75 is connected to the corresponding first hydraulic cylinder 21 and second hydraulic cylinder 51 through a pipeline.

[0056] See Figure 1 and Figure 2In some embodiments of the present invention, the first housing 1 is provided with a partition plate 13 and two sets of partition bars 131. The two sets of partition bars 131 are fixedly disposed on two opposite inner walls of the first housing 1. Each set of partition bars 131 consists of at least two partition bars 131, which are arranged in parallel and spaced apart. The end of the partition plate 13 can be inserted downward into the gap between two adjacent partition bars 131 to divide the first housing 1 into two spatial chambers along the length or width direction.

[0057] In this invention, if a partition plate 13 is provided along the length of the first housing 1, the first housing 1 is divided into two narrow test slots. The two test slots can correspond one-to-one with two second hydraulic cylinders 51 and two loading plates 52, that is, each test slot can be independently configured with one second hydraulic cylinder 51 and one loading plate 52. Both test slots can realize mechanical loading and simulated wave generation tests. The working conditions in the two test slots can be carried out simultaneously, thus accelerating the test process. If a partition plate 13 is provided along the width of the first housing 1, the first housing 1 is divided into two relatively square housing cavities. Two sets of tests can be arranged in the two housing cavities at the same time, and mechanical loading tests can be carried out sequentially, thus accelerating the test process.

[0058] Specifically, the partition plate 13 is not necessary. When the partition plate 13 is not set in the first box 1, the first box 1 has a relatively large test space, which can be used for mode tests in different engineering scenarios such as water conservancy, tunnels, roads and municipal engineering.

[0059] See Figure 3 and Figure 4 In some embodiments of the present invention, two sets of guide components 23 are further included. The two sets of guide components 23 are symmetrically spaced on both sides of the first hydraulic cylinder 21. Each set of guide components 23 includes a support column 231, two sliding sleeves 232 and two guide rods 233. The lower end of the support column 231 is connected to the inner wall of the second housing 2. Two through holes are opened at intervals on the support column 231. The two sliding sleeves 232 are fixedly installed in the two through holes one by one. The two guide rods 233 are slidably installed in the two sliding sleeves 232 one by one. The four guide rods 233 of the two sets of guide components 23 are arranged in a rectangular array.

[0060] In this invention, the structure of four rectangular arrayed guide rods 233 formed by two sets of guide components 23 can ensure the guiding effect on the wave-making plate 22. When the first hydraulic cylinder 21 drives the wave-making plate 22 to move, the four guide rods 233 move axially along the four sliding sleeves 232 in a one-to-one correspondence. The center of the back side of the wave-making plate 22 is supported by the first hydraulic cylinder 21, and the four corners are supported by the four guide rods 233, so that the entire surface of the wave-making plate 22 can be evenly stressed to achieve stable wave generation.

[0061] See Figure 1 In some embodiments of the present invention, the first box 1 includes a main frame 14, a bottom plate 15 and a plurality of transparent visible side plates 16. The bottom plate 15 is fixedly disposed at the bottom of the main frame 14 to support the soil, and the plurality of transparent visible side plates 16 are fixedly disposed on the sides of the main frame 14.

[0062] In this invention, the transparent visible side plate 16 is an acrylic plate. By setting multiple transparent visible side plates 16, the loading state of the soil can be observed in real time. After the first box 1 is divided into two narrow test slots by the partition plate 13, the two-dimensional plane model where the contact surface between the soil and the transparent visible side plate 16 is located can be observed.

[0063] See Figure 2 In some embodiments of the present invention, a sealing plate 6 is detachably sealed between the first box 1 and the second box 2, a heating plate is provided inside the bottom plate 15 corresponding to the lower part of the soil, an inlet pipe 17 is provided on the top of the opening side of the first box 1, the inlet end of the inlet pipe 17 is connected to a water tank on an external lifting frame through a pipe, and the outlet end of the inlet pipe 17 extends into the first box 1.

[0064] In this invention, when it is necessary to simulate wave generation in the soil inside the first box 1, the sealing plate 6 can be removed to connect the first box 1 and the second box 2. When it is necessary to simulate high water head operation in the soil inside the first box 1, the sealing design of the first box 1 is achieved by installing the sealing plate 6. The height of the external lifting frame and water tank can be adjusted to achieve free adjustment of the water head height. The high-level water flow is transported to the liquid inlet pipe 17 through the pipeline and enters the first box 1. The soil is heated by the heating plate to simulate the high temperature and high water pressure environment under the high ground temperature tunnel scenario.

[0065] See Figure 1In some embodiments of the present invention, the bottom of the first box 1 is arranged in a rectangular array with a plurality of ground wheels 18, and the bottom periphery of the first box 1 is provided with a plurality of foot feet 19. The side of the second box 2 away from the first box 1 is provided with a plurality of diagonal bracing brackets 24 at intervals, and the lower ends of the plurality of diagonal bracing brackets 24 are provided with a plurality of supporting base plates 241 corresponding to each other.

[0066] In this invention, by setting multiple ground wheels 18, the first box 1 can be moved conveniently. After it is moved into place, the extension height of multiple feet 19 is adjusted to lift the multiple ground wheels 18 off the ground, thereby achieving stable support for the box. At the same time, multiple inclined bracing brackets 24 and multiple supporting base plates 241 support the second box 2, thereby supporting the entire device.

[0067] In operation, the second housing 2 is moved to the working position by a hoisting mechanism and fixed to it by a supporting base plate 241. The first housing 1 is moved close to the second housing 2 by ground wheels 18. The ground feet 19 are adjusted until the opening side of the first housing 1 is opposite to the opening side of the second housing 2 and the two are connected. Soil to be loaded is placed in the first housing 1, and the vibrator is hoisted by the hoisting mechanism to compact the soil. The second hydraulic cylinder 51 is controlled to apply load to the soil. When it is necessary to change the loading position of the soil, the locking screw 33 is released from the lock on the gantry reaction frame 4 and the guide rail body 31, and the gantry reaction frame 4 is pushed along the guide rail body 31 to the preset position. The locking screw 33 is then used to re-lock and fix the structure, and the second housing 2 is filled with soil. The water is introduced, driving the wave-generating plate 22 to reciprocate in the direction of the first chamber 1 to generate waves in a cycle, simulating the scouring of the dam by the surge. By setting a partition plate 13 along the length or width of the first chamber 1, the first chamber 1 is divided into two spatial chambers, allowing two sets of tests to be carried out simultaneously. By setting a sealing plate 6 between the first chamber 1 and the second chamber 2, water is transported to the heated soil in the first chamber 1 from a high-level water tank to simulate the test scenario of high temperature and high water pressure environment. During the test, the soil condition in the first chamber 1 can be observed at any time through the transparent visible side plate 16. The water seeping out of the soil in the first chamber 1 is discharged through the outlet valve 11 and the seepage flow rate is measured by the flow meter, thereby obtaining the simulated influence of wave generation and mechanical load on the stability of the soil slope.

[0068] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A model box test apparatus, characterized in that, The enclosure includes a detachably connected first housing (1) and a second housing (2). The top surfaces and adjacent sides of both the first housing (1) and the second housing (2) are open. A water outlet valve (11) is provided on the lower part of the side of the first housing (1) away from the second housing (2). The first housing (1) can be filled with soil, and the second housing (2) can be filled with water. A guide rail assembly (3) is provided along the length of the lower part of the side of the first housing (1). A portal reaction frame (4) is provided on the upper part of the second box (1). The lower end of the portal reaction frame (4) is connected to the guide rail assembly (3). A loading device (5) is provided on the portal reaction frame (4). The loading device (5) is used to apply load to the soil. A first hydraulic cylinder (21) is provided inside the second box (2). A wave-making plate (22) is provided on the driving end of the first hydraulic cylinder (21) and is used to drive the wave-making plate (22) to create waves in the first box (1).

2. The model box test apparatus according to claim 1, characterized in that, Two filter partitions (12) are provided in the first box (1) between the soil and the opening side of the first box (1). Both filter partitions (12) are parallel to the wave-making plate (22). A spacer cavity is provided between the two filter partitions (12), and the spacer cavity is used to fill filter material.

3. The model box test apparatus according to claim 1, characterized in that, The guide rail assembly (3) includes a guide rail body (31), a track wheel (32), and a locking screw (33). The guide rail body (31) is fixedly connected to the lower side of the first box (1) and extends along the length of the first box (1). The gantry reaction frame (4) includes a crossbeam (41) and two columns (42) respectively disposed at both ends of the crossbeam (41). The track wheel (32) is disposed at the lower end of the column (42) and rolls with the guide rail body (31). The lower end of the column (42) is provided with a first locking hole (431). The guide rail body (31) is provided with a plurality of second locking holes (311) spaced apart along its length. The locking screw (33) can pass through the first locking hole (431) and the second locking hole (311) at the same time, and its end can be screwed into a locking block (34) for fixation.

4. The model box test apparatus according to claim 3, characterized in that, The lower end of the column (42) is formed with a support plate (43), the track wheel (32) is set at the bottom of the support plate (43), the first locking hole (431) is opened on the support plate (43) and is offset from the position of the track wheel (32), the support plate (43) is provided with a clamp plate (44), the clamp plate (44) is a U-shaped plate and the opening faces the track wheel (32), the upper part of the clamp plate (44) is fixedly connected to the top surface of the support plate (43), and the lower part of the clamp plate (44) extends into the bottom of the guide rail body (31).

5. The model box test apparatus according to claim 1, characterized in that, The loading device (5) includes a second hydraulic cylinder (51) and a loading plate (52). There are two second hydraulic cylinders (51) and two loading plates (52). The two second hydraulic cylinders (51) are arranged at intervals relative to each other, and their fixed ends are connected to the bottom of the crossbeam (41) of the portal reaction frame (4). The two loading plates (52) are arranged one-to-one at the driving ends of the two second hydraulic cylinders (51) and can be in contact with the soil and apply load to it.

6. The model box test apparatus according to claim 5, characterized in that, The first box (1) is provided with a partition plate (13) and two sets of partition strips (131). The two sets of partition strips (131) are fixedly installed on two opposite inner walls of the first box (1). Each set of partition strips (131) has at least two partition strips (131) and the at least two partition strips (131) are arranged in parallel and spaced apart. The end of the partition plate (13) can be inserted downward into the gap between two adjacent partition strips (131) to divide the first box (1) into two spatial chambers along the length or width direction.

7. The model box test apparatus according to claim 1, characterized in that, It also includes two sets of guide components (23), which are symmetrically spaced on both sides of the first hydraulic cylinder (21). Each set of guide components (23) includes a support column (231), two sliding sleeves (232) and two guide rods (233). The lower end of the support column (231) is connected to the inner wall of the second housing (2). Two through holes are opened at intervals on the support column (231). The two sliding sleeves (232) are fixedly installed in the two through holes one by one. The two guide rods (233) are slidably installed in the two sliding sleeves (232) one by one. The four guide rods (233) of the two sets of guide components (23) are arranged in a rectangular array.

8. The model box test apparatus according to claim 1, characterized in that, The first box (1) includes a main frame (14), a box bottom plate (15) and a plurality of transparent visible side plates (16). The box bottom plate (15) is fixedly installed at the bottom of the main frame (14) to support the soil, and the plurality of transparent visible side plates (16) are fixedly installed on the sides of the main frame (14).

9. A model box testing device according to claim 8, characterized in that, A sealing plate (6) is detachably sealed between the first box (1) and the second box (2). A heating plate is provided inside the bottom plate (15) corresponding to the soil below. An inlet pipe (17) is provided on the top of the opening side of the first box (1). The inlet end of the inlet pipe (17) is connected to the water tank on the external lifting frame through a pipe. The outlet end of the inlet pipe (17) extends into the first box (1).

10. A model box testing apparatus according to any one of claims 1 to 9, characterized in that, The bottom of the first box (1) is arranged in a rectangular array with multiple wheels (18), and the bottom periphery of the first box (1) is provided with multiple feet (19). The side of the second box (2) away from the first box (1) is provided with multiple diagonal bracing brackets (24) at intervals, and the lower ends of the multiple diagonal bracing brackets (24) are provided with multiple support base plates (241) corresponding to each other.

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