Test device for simulating deformation of reinforced dam body under water level rise and fall

Abstract

The utility model provides a test device for simulating deformation of a reinforced dam body under water level rise and fall. The testing device comprises a model groove, a dam body model installed in the model groove, a water circulation module and a measuring module, the dam body model comprises a soil body and an anti-seepage wall arranged in the soil body, the two sides of the soil body and the two sides of the anti-seepage wall abut against the model groove in a seamless mode, the soil body is divided into a first soil body and a second soil body through the anti-seepage wall, and the first soil body and the second soil body are connected through the water circulation module. The containing space of the model groove is divided into an upstream space and a downstream space by the diaphragm wall, and the water circulation module is communicated with the upstream space; the measuring module comprises a plurality of displacement sensors mounted on the surface of the soil body, a plurality of osmometers and a plurality of soil pressure sensors which are mounted in the soil body, at least one settlement scale group and at least one pressure measuring tube group which are arranged in the soil body, and a plurality of total stations arranged outside the model tank. The test device provided by the utility model can be applied to the simulation of the deformation of the reinforced dam body with the diaphragm wall, and has the advantage of accurate simulation result.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic engineering test models, and particularly relates to a test device for simulating the deformation of a reinforced dam body under the rise and fall of water level. Background Art

[0002] In the safety appraisal work after reinforcement, it is found that a considerable number of earth-rock dams reinforced with cut-off walls have cracks at the dam crest after years of operation. Due to the lack of understanding of the deformation law and internal mechanism of the reinforced dam body, there is a lack of scientific judgment on the key issues related to the safety of the dam, such as the deformation stability trend of the reinforced dam body and the degree of crack hazard. At present, the deformation analysis of the reinforced dam body has become the key technical bottleneck for promoting the safety evaluation of the dam structure.

[0003] At present, the data of some earth dams are collected by piezometric drains, and the position of the phreatic surface is measured by using potassium permanganate solution as a tracer. This method not only has a slow data feedback speed, but also the solution is easily diluted by water, resulting in the unclear phreatic line. The data of some earth dams are collected in real time through the American multi-channel data acquisition system Wavebook, and the process of the reservoir water level dropping in the plexiglass flume is recorded by a camera. Although this method has a rapid feedback, it is expensive and has a high cost. Content of the Utility Model

[0004] The purpose of the utility model is to provide a test device for measuring an earth dam reinforced with a cut-off wall, which has the advantages of accurate simulation results and simple operation.

[0005] To achieve the above purpose, the utility model provides a test device for simulating the deformation of a reinforced dam body under the rise and fall of water level. The reinforced dam body is an earth dam reinforced with a cut-off wall, and the test device includes:

[0006] A model tank, which has a receiving space;

[0007] A dam body model, which is used to simulate a section of the dam body in the reinforced dam body. The dam body model is installed in the model tank and includes a soil body with a trapezoidal longitudinal section and a cut-off wall arranged in the soil body and extending along a first direction. Both sides of the soil body and both sides of the cut-off wall are in seamless contact with the model tank. The cut-off wall divides the soil body into a first soil body and a second soil body, and the cut-off wall divides the receiving space of the model tank into an upstream space and a downstream space. The first soil body is located in the upstream space, the second soil body is located in the downstream space, and the first direction is the same as the extending direction of the soil body;

[0008] A water circulation module, which is communicated with the upstream space and is used to adjust the water level in the upstream space;

[0009] Measurement module, the measurement module includes a plurality of displacement sensors installed on the surface of the soil body, a plurality of piezometers and a plurality of earth pressure sensors installed in the soil body, at least one settlement scale group and at least one piezometric tube group arranged in the soil body, and a plurality of total stations arranged outside the model tank. Among them, each settlement scale group includes two settlement scales located on both sides of the cut-off wall respectively, and each piezometric tube group includes two piezometric tubes located on both sides of the cut-off wall respectively.

[0010] In a specific embodiment, the water circulation module includes a circulation water pump, an inlet valve communicated with the inlet of the circulation water pump, and an outlet valve communicated with the outlet of the circulation water pump. Both the inlet valve and the outlet valve are communicated with the upstream space.

[0011] In a specific embodiment, the model tank includes a tank bottom, two first side walls extending away from the tank bottom at both ends of the tank bottom, and two second side walls extending away from the tank bottom on both sides of the tank bottom. The tank bottom, the two first side walls and the two second side walls jointly enclose the receiving space, and the extending direction of the dam body model is the same as the width direction of the tank bottom.

[0012] In a specific embodiment, the soil body includes a lower bottom surface in contact with the tank bottom, an upper bottom surface arranged parallel and spaced from the lower bottom surface, two relatively arranged first side surfaces respectively connected to the upper bottom surface and the lower bottom surface at both ends, and two second side surfaces arranged parallel and spaced. Among them, the two first side surfaces are respectively arranged at intervals with the two first side walls, and the two second side surfaces are in seamless contact with the two second side walls respectively.

[0013] In a specific embodiment, a plurality of the displacement sensors are arranged on the surface of the soil body, and are arranged at intervals along the height direction of the model tank.

[0014] In a specific embodiment, a plurality of the piezometers and a plurality of the earth pressure sensors are buried in the middle section of the soil body in a preset manner. The middle section is arranged parallel to the second side surface and the distances from the middle section to the two second side surfaces are the same. The preset manner is a multi-row × multi-column manner, and the number arranged in each column is positively correlated with the height of the soil body.

[0015] In a specific embodiment, the number of the settlement scale groups is three. One settlement scale group is installed on the middle section, and the other two settlement scale groups are installed on the front side of the middle section. The two settlement scales of each settlement scale group are symmetrically arranged with respect to the cut-off wall.

[0016] In a specific embodiment, the number of the piezometer groups is one. Two of the piezometers are located at the rear side of the middle section and are symmetrically arranged with respect to the impervious wall. The distances between the piezometers and the settlement scales on the same side and the impervious wall are the same.

[0017] In a specific embodiment, the impervious wall includes a first side plate abutting against the first soil body, a second side plate oppositely arranged with respect to the first side plate and abutting against the second soil body, and a connecting member with two ends respectively connected to the first side plate and the second side plate. There is a receiving space for water between the first side plate and the second side plate. The first side plate is an impervious plate, and the second side plate is a permeable plate.

[0018] A water injection hole is formed at the lower end of the second side wall, and the water injection hole is communicated with the receiving space of the impervious wall.

[0019] The test device further includes a water tank communicated with the water injection hole through a pipeline. The water in the water tank flows into the receiving space through the water injection hole and permeates into the downstream space through the second side plate.

[0020] In a specific embodiment, the test device further includes a data processing module. The data processing module includes a comprehensive acquisition module and a monitoring cloud platform. The displacement sensor, the piezometer, the earth pressure sensor, the settlement scale group, and the piezometer group are respectively electrically connected to the comprehensive acquisition module, and the comprehensive acquisition module is communicatively connected to the monitoring cloud platform.

[0021] The beneficial effects of the present utility model at least include:

[0022] The test device provided by the present utility model includes a model tank, a dam model installed in the model tank, a water circulation module communicated with the model tank, and a measurement module installed on the dam model. Among them, the dam model includes a soil body with a trapezoidal longitudinal section and a cut-off wall arranged in the soil body and extending in a first direction. Both sides of the soil body and both sides of the cut-off wall are in seamless contact with the model tank. The cut-off wall divides the soil body into a first soil body and a second soil body, and the cut-off wall divides the accommodation space of the model tank into an upstream space and a downstream space. The first soil body is located in the upstream space, and the second soil body is located in the downstream space. The water circulation module is communicated with the upstream space. The measurement module includes a plurality of displacement sensors installed on the surface of the soil body, a plurality of piezometers and a plurality of earth pressure sensors installed in the soil body, at least one settlement scale group and at least one piezometric tube group arranged in the soil body, and a plurality of total stations arranged outside the model tank. In this way, on the one hand, the upstream space and the downstream space can be controlled at different liquid levels for measurement to monitor the deformation of the dam body. On the other hand, the water level in the upstream space can be controlled to rise and fall periodically within a certain height range through the water circulation module until the vertical deformation reaches stability and cracks appear at the top of the dam model, so as to monitor the influence of the water level rise and fall on the dam model, and comprehensively analyze the deformation results of the dam body in different states, making the simulation results more accurate and more realistic.

[0023] In addition to the purposes, features, and advantages described above, the present utility model has other purposes, features, and advantages. The following will refer to the drawings to further elaborate on the present utility model in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a middle cross-sectional view of the test device provided by an embodiment of the present utility model;

[0025] Figure 2 It is a cross-sectional view of the test device provided by an embodiment of the present utility model with piezometric tubes installed;

[0026] Figure 3 It is a top view of the test device provided by an embodiment of the present utility model;

[0027] Figure 4 It is a connection schematic diagram of the measurement module and the data processing module in the test device provided by an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will elaborate on the embodiments of the present utility model in detail with reference to the drawings.

[0029] Please refer to Figures 1 to 4, the present utility model provides a test device for simulating the deformation of a reinforced dam under rising and falling water levels, and the reinforced dam is an earth dam reinforced with a cutoff wall.

[0030] The test device includes a model tank 10, a dam model 20 installed in the model tank 10, a water circulation module 30 communicated with the model tank 10, a measurement module 40 installed on the dam model 20, and a data processing module 50 connected to the measurement module 40.

[0031] The model tank 10 has a receiving space 10A, the dam model 20 is installed in the receiving space 10A, and the water circulation module 30 is communicated with the receiving space 10A.

[0032] In the present utility model, the model tank 10 is a U-shaped tank with an open upper end, including a rectangular tank bottom 11, two first side walls 12 extending from both ends of the tank bottom 11 away from the tank bottom 11, and two second side walls 13 extending from both sides of the tank bottom 11 away from the tank bottom 11. The tank bottom 11, the two first side walls 12, and the two second side walls 13 together enclose the receiving space 10A.

[0033] In the present utility model, the length direction of the tank bottom 11 is Figure 3 the X direction shown, and the width direction of the tank bottom 11 is Figure 3 the Y direction shown.

[0034] In the present utility model, the tank bottom 11 is paved with concrete of a preset thickness on the compacted stratum soil.

[0035] In this embodiment, the preset thickness is 10 cm.

[0036] The tank bottom 11 is paved with 10 cm thick concrete, which can effectively prevent water and ensure the rigor of the test.

[0037] Preferably, both the first side wall 12 and the second side wall 13 are tempered glass.

[0038] In this embodiment, the thickness of the first side wall 12 and the second side wall 13 is 20 mm.

[0039] The first side wall 12 and the second side wall 13 are made of tempered glass, which can observe the compaction effect of the soil during the construction process of the dam model and can also observe the flow net of the dam model section.

[0040] In this embodiment, the size of the model tank: length × width × height = 10.5 m × 3 m × 2 m. In the present utility model, the dam model 20 is used to simulate a section of the reinforced dam in the reinforced dam.

[0041] In the present utility model, the dam body model 20 extends along the width direction of the model groove 10, that is, the length of the dam body model 20 is the same as the width of the model groove 10.

[0042] In the present utility model, the length of the dam body model 20 is 3m.

[0043] Specifically, it can be understood that if the total length of the reinforced dam body is 30m and the length of the dam body model 20 is 3m, then the length of the dam body model 20 is 1 / 10 section of the reinforced dam body.

[0044] The dam body model 20 includes a soil body 21 and a cutoff wall 22 disposed in the soil body 21 and extending along a first direction. Both sides of the soil body 21 and both sides of the cutoff wall 22 are in seamless abutment with the model groove 10, and the first direction is the same as the extending direction of the soil body 21.

[0045] In the present utility model, the first direction, the extending direction of the soil body, the extending direction of the reinforced dam body, and the width direction of the model groove are all the same.

[0046] In the present utility model, the soil body 21 includes a lower bottom surface 211 in abutment with the groove bottom 11, an upper bottom surface 212 arranged in parallel and spaced apart from the lower bottom surface 211, and two relatively arranged first side surfaces 213 and two second side surfaces 214 arranged in parallel and spaced apart, with one first side surface 213, one second side surface 214, the other first side surface 213, and the other second side surface 214 connected end to end in sequence. Among them, the two first side surfaces 213 are respectively arranged at intervals with the two first side walls 12, and the two second side surfaces 214 are in seamless abutment with the two second side walls 13 respectively.

[0047] It can be understood that both ends of the soil body 21 are respectively arranged at intervals with the two first side walls 12 of the model groove 10, and both sides of the soil body 21 are in seamless abutment with the two second side walls 13 of the model groove 10 respectively.

[0048] Preferably, both the upper bottom surface 212 and the lower bottom surface 211 are rectangles. The length of the upper bottom surface 212 is less than the length of the lower bottom surface 211, and the width of the upper bottom surface 212 is the same as the width of the lower bottom surface 211. The central axis of the upper bottom surface 212 and the central axis of the lower bottom surface 211 are located on the same straight line.

[0049] In the present utility model, the symmetry axis in the length direction of the lower bottom surface 211 and the symmetry axis in the length direction of the groove bottom 11 are located on the same straight line, and the length of the lower bottom surface 211 is less than the length of the groove bottom 11.

[0050] Preferably, the first side surface 213 is a rectangle arranged obliquely, and the second side surface 214 is an isosceles trapezoid.

[0051] The impervious wall 22 is rectangular, and is arranged parallel to the first side wall 11. It is inserted into the soil body 21. The top end of the impervious wall 22 is flush with the upper bottom surface 212 of the soil body 21, and the bottom end of the impervious wall 22 is flush with the lower bottom surface 211 of the soil body 21.

[0052] Along the length direction of the model groove 10, the impervious wall 22 divides the soil body 21 into a first soil body 21A and a second soil body 21B, and the impervious wall 22 divides the accommodation space 10A of the model groove 10 into an upstream space 101A and a downstream space 102A. The first soil body 21A is located in the upstream space 101A, and the second soil body 21B is located in the downstream space 102A.

[0053] In this embodiment, the first soil body 21A and the second soil body 21B are symmetrically arranged with respect to the impervious wall 22.

[0054] That is, the impervious wall 22 divides the soil body 21 into two identical parts from the middle position.

[0055] In this utility model, the longitudinal sections of the first soil body 21A and the second soil body 21B are both right trapezoids, and the acute angles of the first soil body 21 and the second soil body 21B are 26 degrees.

[0056] The impervious wall 22 includes a first side plate that abuts against the first soil body 21A, a second side plate that is oppositely arranged to the first side plate and abuts against the second soil body 21B, and a connecting member that is respectively connected to the first side plate and the second side plate at both ends. There is an accommodation space for accommodating water between the first side plate and the second side plate. The first side plate is a water-impermeable plate, and the second side plate is a water-permeable plate.

[0057] In this utility model, the connecting member can be a connecting rod.

[0058] In this utility model, a water injection hole is opened at the lower end of the second side wall 13, and the water injection hole is communicated with the accommodation space of the impervious wall.

[0059] It can be understood that a communication hole is correspondingly opened on the side surface of the impervious wall 22 facing the second side wall where the water injection hole is opened. The water injection hole and the communication hole are communicated and are arranged opposite to each other.

[0060] Preferably, the test device further includes a water tank, and the water tank is communicated with the water injection hole through a pipeline.

[0061] In this way, the water in the water tank flows into the accommodation space through the water injection hole and the communication hole, and then penetrates through the second side plate into the downstream space 102A, so that the water level of the downstream space 102A can be adjusted.

[0062] The water circulation module 30 communicates with the upstream space 101A and is used to adjust the water level in the upstream space 101A.

[0063] That is, in the present invention, the water level of the upstream space is controlled by the water circulation module 30, and the water level of the downstream space is controlled by the liquid level of the water tank.

[0064] The water circulation module 30 includes a circulation water pump 31, a water inlet valve 32 communicated with the water inlet of the circulation water pump 31, and a water outlet valve 32 communicated with the water outlet of the circulation water pump 31. Both the water inlet valve 32 and the water outlet valve 33 communicate with the upstream space 101A.

[0065] In the present invention, the water inlet opened in the model tank 10 and communicated with the water inlet valve 32 and the water outlet opened in the model tank 10 and communicated with the water outlet valve 32 are respectively arranged on two second side walls 13, that is, the water inlet and the water outlet of the model tank 10 are oppositely arranged.

[0066] The water circulation module 30 is used to simulate the test process of uneven deformation and crack generation during the water level rise and fall process of the reinforced earth dam. In this embodiment, it can be that after the water level in the upstream space 101A stabilizes at the preset height h1, the water level in the upstream space 101A rises and falls periodically between 0 and h1 until the vertical deformation reaches stability and cracks appear at the top of the dam body model 20. At this time, the water level of the downstream space is determined by calculation, and then the water level of the downstream space 102A changes with the change of the upstream water level, and the water in the downstream space penetrates into the downstream space by injecting water into the impervious wall.

[0067] In the present invention, the preset height h1 is 1.6 m.

[0068] The measurement module 40 includes a plurality of displacement sensors 41 installed on the surface of the soil body 21, a plurality of piezometers 42 and a plurality of earth pressure sensors 43 installed in the soil body 21, at least one settlement scale group 44 and at least one piezometer group 45 respectively arranged in the first soil body 21A and the second soil body 21B, and a plurality of total stations 46. Among them, each settlement scale group 44 includes a first settlement scale 441 and a second settlement scale 442 respectively located on both sides of the impervious wall 22, and each piezometer group 45 includes a first piezometer 451 and a second piezometer 452 respectively located on both sides of the impervious wall 22.

[0069] The displacement sensor 41 is used to measure the vertical displacements of the surfaces of the first soil mass 21A and the second soil mass 21B.

[0070] In the present utility model, the vertical displacement can be understood as the displacement in the height direction of the dam body model.

[0071] In the present utility model, a plurality of displacement sensors 41 are arranged on the first side surface 213 and the upper bottom surface of the soil mass 21, and are arranged at intervals along the height direction of the model groove 10.

[0072] Preferably, at the same height, a plurality of displacement sensors can be arranged on the first side surface and the upper bottom surface of the soil mass 21.

[0073] In the present utility model, the number of the displacement sensors is 12. Three displacement sensors are respectively arranged on the upper bottom surfaces of the first soil mass 21A and the second soil mass 21B, and the other six displacement sensors are installed on the side surface of the first soil mass 12A and are arranged in the way of 2 rows * 3 columns.

[0074] In this embodiment, the displacement sensor adopts the JMDL-2110AT intelligent general displacement meter.

[0075] The osmotic pressure gauge 42 is used to measure the osmotic pressure in the soil mass, and the soil pressure sensor 43 is used to measure the soil pressure. The present utility model obtains the seepage information through the osmotic pressure gauge 42 and the soil pressure sensor 43, so as to understand the seepage situation in the soil mass.

[0076] In the present utility model, the seepage information can be understood as the situation that the water from the upstream space seeps through the impervious wall to the downstream space.

[0077] Preferably, a plurality of the osmotic pressure gauges 42 and a plurality of the soil pressure sensors 43 are buried in the middle section of the soil mass 21 in a preset manner. The middle section is arranged parallel to the second side surface and the distances from the middle section to the two second side surfaces are the same.

[0078] Preferably, the preset manner is the multi-row × multi-column manner, and the number of each column arrangement is positively correlated with the height of the soil mass.

[0079] Preferably, the number of the osmotic pressure gauges 42 is the same as that of the soil pressure sensors 43, and a plurality of the osmotic pressure gauges 22 and a plurality of the soil pressure sensors 43 are respectively arranged in one-to-one correspondence.

[0080] In the present utility model, the corresponding arrangement of the osmotic pressure gauge 42 and the soil pressure sensor 43 can be understood as that at the position where the osmotic pressure gauge 22 is installed, the soil pressure sensor 43 is also installed, and the two are arranged side by side along the length direction of the model groove 10.

[0081] In this embodiment, the number of the osmometers 42 and the earth pressure sensors 43 is 18 each, and the number of the first soil mass 21A and the second soil mass 21B is 9 each, which are arranged in a 3-row × 4-column manner.

[0082] In this embodiment, the osmometer 42 is a JMZX-5701HT osmometer, and the earth pressure sensor 43 is a 2JMZX-5001AT intelligent vibrating wire earth pressure cell.

[0083] In the present utility model, each settlement scale group 44 includes a first settlement scale 441 and a second settlement scale 442 respectively located on both sides of the impervious wall 22. Among them, the first settlement scale 441 is installed in the first soil mass 21A for measuring the internal displacement of the first soil mass 21A; the second settlement scale 442 is installed in the second soil mass 21B for measuring the internal displacement of the first soil mass 21B.

[0084] In the present utility model, the tops of the first settlement scale 441 and the second settlement scale 442 are located below the upper bottom surface 22 of the soil mass 21, and the bottoms of the first settlement scale 441 and the second settlement scale 442 and the lower bottom surface 21 of the soil mass 21 are in the same plane.

[0085] Preferably, the first settlement scale 441 and the second settlement scale 442 are arranged in parallel at intervals and are symmetrically arranged with respect to the impervious wall 22.

[0086] In the present utility model, the number of the settlement scale groups 44 is three. One settlement scale group is installed at the middle section, and the other two settlement scale groups are installed at the front side of the middle section.

[0087] It should be noted that the above-mentioned front side is described based on Figure 3 the orientation.

[0088] In this embodiment, the first settlement scale 441 and the second settlement scale 442 are JMDL-4110AT settlement scales.

[0089] In the present utility model, each piezometer group 45 includes a first piezometer 451 and a second piezometer 452 respectively located on both sides of the impervious wall 22. Among them, the first piezometer 451 is arranged in the first soil mass 21A for monitoring the phreatic line and water pressure in the upstream space 101A, and the second piezometer 452 is arranged in the second soil mass 21B for monitoring the phreatic line and water pressure in the downstream space 102A, that is, obtaining the water level rise and fall conditions in the upstream space and the downstream space.

[0090] In the present utility model, the lengths of the first piezometric tube 451 and the second piezometric tube 452 are the same as the height of the soil mass 21. The lower ends of the first piezometric tube 451 and the second piezometric tube 452 are in contact with the bottom of the model tank 10, and the upper ends of the first piezometric tube 451 and the second piezometric tube 452 are in communication with the atmosphere.

[0091] Preferably, the first piezometric tube 451 and the second piezometric tube 452 are arranged in parallel at intervals and symmetrically arranged with respect to the cutoff wall 22.

[0092] In the present utility model, the number of the piezometric tube groups is one. The first piezometric tube 451 and the second piezometric tube 452 are located at the rear side of the middle section. The distance from the first settlement scale 441 in the first soil mass 21A to the cutoff wall 22 is the same as the distance from the first piezometric tube 451 to the cutoff wall 22, and the distance from the second settlement scale 442 in the second soil mass 21B to the cutoff wall 22 is the same as the distance from the second piezometric tube 452 to the cutoff wall 22, that is, the distances between the piezometric tubes and the settlement scales on the same side and the cutoff wall are the same.

[0093] It should be noted that the above-mentioned rear side is described based on Figure 3 the orientation of

[0094] The total station 46 is used to monitor the surface horizontal deformation of the soil mass 21.

[0095] In the present utility model, the total station 46 is arranged outside the model tank 10.

[0096] In the present utility model, the number of the total stations 46 is four.

[0097] The data processing module 50 includes a comprehensive acquisition module 51 and a monitoring cloud platform 52. The displacement sensor 41, the osmotic pressure gauge 42, the earth pressure sensor 43, the settlement scale group 44, and the piezometric tube group 45 are respectively electrically connected to the comprehensive acquisition module 51, and the comprehensive acquisition module 51 is communicatively connected to the monitoring cloud platform 52.

[0098] In this embodiment, the comprehensive acquisition module 51 adopts a JMZX-32A comprehensive acquisition module.

[0099] In the present utility model, the data processing module 50 further includes an acquisition chassis 53, and the comprehensive acquisition module 51 is installed in the acquisition chassis 53.

[0100] The monitoring cloud platform 52 is used to send instructions and display the data collected by the comprehensive acquisition module 51.

[0101] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions and substitutions can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. An experimental device for simulating the deformation of a reinforced dam under rising and falling water levels, wherein the reinforced dam is an earth dam reinforced with a cutoff wall, and is characterized in that The test device includes: A model tank having a receiving space; A dam body model for simulating a section of the reinforced dam body. The dam body model is installed in the model tank and includes a soil body with a trapezoidal longitudinal section and a cutoff wall disposed in the soil body and extending in a first direction. Both sides of the soil body and both sides of the cutoff wall are in seamless contact with the model tank. The cutoff wall divides the soil body into a first soil body and a second soil body, and divides the receiving space of the model tank into an upstream space and a downstream space. The first soil body is located in the upstream space, and the second soil body is located in the downstream space. Wherein, the first direction is the same as the extending direction of the soil body; A water circulation module communicating with the upstream space for adjusting the water level in the upstream space; A measurement module including a plurality of displacement sensors installed on the surface of the soil body, a plurality of piezometers and a plurality of earth pressure sensors installed in the soil body, at least one settlement scale group and at least one piezometric tube group disposed in the soil body, and a plurality of total stations disposed outside the model tank. Wherein, each settlement scale group includes two settlement scales respectively located on both sides of the cutoff wall, and each piezometric tube group includes two piezometric tubes respectively located on both sides of the cutoff wall.

2. The test device for simulating the deformation of a reinforced dam under rising and falling water levels according to claim 1, wherein The water circulation module includes a circulation water pump, an inlet valve communicating with the inlet of the circulation water pump, and an outlet valve communicating with the outlet of the circulation water pump. Both the inlet valve and the outlet valve communicate with the upstream space.

3. The test device for simulating the deformation of a reinforced dam under the rise and fall of water level according to claim 1, characterized in that, The model tank includes a tank bottom, two first side walls extending away from the tank bottom at both ends of the tank bottom, and two second side walls extending away from the tank bottom on both sides of the tank bottom. The tank bottom, the two first side walls and the two second side walls jointly enclose the receiving space, and the extending direction of the dam body model is the same as the width direction of the tank bottom.

4. The test device for simulating the deformation of a reinforced dam under rising and falling water levels according to claim 3, wherein, The soil body includes a lower bottom surface in contact with the tank bottom, an upper bottom surface arranged parallel and spaced apart from the lower bottom surface, two opposite first side surfaces respectively connected to the upper bottom surface and the lower bottom surface at both ends, and two second side surfaces arranged parallel and spaced apart. Wherein, the two first side surfaces are respectively spaced apart from the two first side walls, and the two second side surfaces are in seamless contact with the two second side walls respectively.

5. The test device for simulating the deformation of a reinforced dam under rising and falling water levels according to claim 4, characterized in that, A plurality of the displacement sensors are arranged on the surface of the soil body and are spaced apart along the height direction of the model tank.

6. The test device for simulating the deformation of a reinforced dam under the rise and fall of water level according to claim 4, wherein A plurality of the piezometers and a plurality of the earth pressure sensors are buried in the middle section of the soil body in a preset manner. The middle section is arranged parallel to the second side surface and the distances from the middle section to the two second side surfaces are the same. The preset manner is a multi-row × multi-column manner, and the number of arrangements in each column is positively correlated with the height of the soil body.

7. The test device for simulating the deformation of a reinforced dam under rising and falling water levels according to claim 6, characterized in that, The number of the settlement scale groups is three. One settlement scale group is installed at the middle section, and the other two settlement scale groups are installed on the front side of the middle section. The two settlement scales of each settlement scale group are symmetrically arranged with respect to the cut-off wall.

8. The test device for simulating the deformation of a reinforced dam under rising and falling water levels according to claim 7, characterized in that, The number of the piezometer groups is one. The two piezometers are located at the rear side of the middle section and are symmetrically arranged with respect to the cut-off wall. The distances between the piezometers and the settlement scales on the same side and the cut-off wall are the same.

9. The test device for simulating the deformation of a reinforced dam under rising and falling water levels according to claim 3, characterized in that, The cut-off wall includes a first side plate in contact with the first soil body, a second side plate oppositely arranged with respect to the first side plate and in contact with the second soil body, and a connecting member with two ends respectively connected to the first side plate and the second side plate. There is a containing space for water between the first side plate and the second side plate. The first side plate is an impervious plate, and the second side plate is a permeable plate; A water injection hole is formed at the lower end of the second side wall, and the water injection hole is communicated with the containing space of the cut-off wall; The test device further includes a water tank communicated with the water injection hole through a pipeline. The water in the water tank flows into the containing space through the water injection hole and permeates into the downstream space through the second side plate.

10. The test device for simulating the deformation of a reinforced dam under rising and falling water levels according to any one of claims 1 to 9, characterized in that, The test device further includes a data processing module. The data processing module includes a comprehensive acquisition module and a monitoring cloud platform. The displacement sensor, the osmotic pressure gauge, the earth pressure sensor, the settlement scale group, and the piezometer group are respectively electrically connected to the comprehensive acquisition module, and the comprehensive acquisition module is communicatively connected to the monitoring cloud platform.

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