Test device

Abstract

The application discloses a test device and relates to the technical field of geological disaster model test.The test device comprises a liquid containing tank, a bank slope model, a water ripple generating assembly and a camera.The liquid containing tank is provided with a containing groove for containing liquid, and the bank slope model is arranged in the liquid containing tank.The surface of the bank slope model is formed with a slope, and at least a part of the slope is located in the containing groove so that the slope is located in the water in the containing groove.In the test process, an appropriate amount of water can be poured into the containing groove of the liquid containing tank until a part of the slope is submerged, and then a float is placed on the water surface, the driving mechanism drives the float to move on the water surface to generate water ripple waves, the water ripple waves can impact the slope of the bank slope model, and the camera can monitor the displacement change of the slope under the impact of the water ripple waves.Compared with the prior art, the test result obtained by the slope in the water under the impact of the water ripple waves is closer to the actual situation, and the measurement is more accurate.

Description

Technical Field

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

[0002] Prolonged rainfall and wave erosion can damage the surface protection structure of riverbanks, leading to soil erosion, deformation, and ultimately landslides.

[0003] Currently, research on riverbank deformation in my country is divided into outdoor experimental studies and indoor model tests. Outdoor field tests rely solely on natural rainfall, making it impossible to control the duration, direction, and intensity of rainfall, resulting in very long testing cycles. Therefore, the tests have been shifted to indoor model tests. For example, the landslide model test apparatus and method disclosed in announcement number CN105510556A includes a landslide model, model box, rainfall system, water supply system, water recycling system, reservoir water level rise and fall system, external data acquisition equipment for the landslide model, and internal data acquisition equipment for the landslide model. This apparatus can simulate water level changes and rainfall intensity in a short time, with comprehensive automated control, improving the accuracy of landslide model test apparatus.

[0004] However, the technical solution disclosed in this existing patent still has some shortcomings. For example, it can only simulate landslide tests under different water level conditions, and cannot simulate the impact test of water ripples on landslides. In natural conditions, water ripples usually impact landslides more often, so the data obtained by the existing technology through tests of landslide impacts at different water levels is not accurate enough. Summary of the Invention

[0005] In view of this, it is necessary to provide a test device to solve the technical problem that the existing landslide model test device cannot simulate the impact test of water ripples on landslides, and the data obtained by the test of water level impact on landslides is not accurate enough.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a testing apparatus, comprising:

[0007] A liquid container, having a holding tank for holding liquids;

[0008] A bank slope model is provided in the liquid holding tank, and the surface of the bank slope model is formed with a slope, at least a portion of which is located in the receiving tank;

[0009] A water ripple generating component includes a float and a drive mechanism connected together. The drive mechanism can drive the float to move on the liquid surface of the receiving tank, so that the liquid surface of the receiving tank forms water ripples that impact the slope.

[0010] A camera is positioned above the slope and is used to monitor the displacement changes of the slope caused by the impact of the water ripples.

[0011] In one embodiment, the drive mechanism includes a traction rope connected to the float, and the drive mechanism is capable of pulling the float to move on the liquid surface of the receiving tank via the traction rope.

[0012] In one embodiment, the drive mechanism further includes a bracket, a transmission belt, a first pulley, and a second pulley. The first pulley and the second pulley are both rotatably mounted on the bracket. The transmission belt is simultaneously sleeved on the first pulley and the second pulley. The transmission belt is connected to the traction rope. At least one of the first pulley and the second pulley can rotate to drive the transmission belt to move, so that the transmission belt drives the traction rope to pull the float.

[0013] In one embodiment, the driving mechanism further includes a first rocker arm disposed on the first rotating wheel and a second rocker arm disposed on the second rotating wheel. The first rocker arm can drive the first rotating wheel to rotate under the drive of an external force, and the second rocker arm can drive the second rotating wheel to rotate under the drive of an external force.

[0014] In one embodiment, the drive mechanism further includes a motor and a drive rod, one end of which is connected to the motor and the other end of which is connected to the first rotating wheel. The motor can drive the first rotating wheel to rotate via the drive rod.

[0015] In one embodiment, the drive mechanism further includes a frequency converter connected to the motor to adjust the rotational speed of the motor driving the drive rod.

[0016] In one embodiment, the drive mechanism further includes casters located at the bottom of the bracket, and the drive mechanism can adjust its position by sliding on the ground via the casters.

[0017] In one embodiment, the test apparatus further includes a water pump, a spray head, and a water pump. One end of the water pump is located in the receiving tank, and the other end of the water pump is located above the slope. The spray head is located at the end of the water pump away from the receiving tank, and the water pump is located in the water pump to drive the liquid in the receiving tank through the water pump and spray it from the spray head onto the slope.

[0018] In one embodiment, the test apparatus further includes a soil moisture sensor and a stress sensor located on the slope.

[0019] In one embodiment, the float has a storage space for loading heavy objects.

[0020] Compared with existing technologies, the beneficial effects of this invention include: During the experiment, an appropriate amount of water can be poured into the container of the liquid tank, and then a float can be placed on the water surface. The drive mechanism is controlled to move the float on the water surface, generating water ripples. These water ripples can impact the slope of the bank slope model. At least a portion of the slope is located in the water in the container, and a camera can monitor the displacement changes of the slope under the impact of the water ripples, thereby recording the experimental results. Compared with existing technologies, which cannot generate water ripples to impact the slope, the experimental results obtained by the present invention, where the slope is located in the water and simultaneously impacted by water ripples, are closer to the actual situation, and the measurements are more accurate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the experimental device of the present invention from one perspective;

[0022] Figure 2 This is a schematic diagram of the experimental device of the present invention from another perspective;

[0023] Figure 3 This is a schematic diagram of the slope model of the present invention;

[0024] Figure 4 This is a schematic diagram of the branch pipe structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the water ripple generation component of the present invention. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the specific details described below are only a part of the embodiments of the present invention, and the present invention can be implemented in many other embodiments different from those described herein. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] refer to Figure 1 The present invention provides a test device 100, which can simulate rainfall and generate water ripples indoors, and can effectively measure the displacement changes of riverbank slopes under the impact of different levels of rainfall and water ripples. The test is not only convenient, but also more accurate and has more reference value.

[0030] refer to Figure 1 The experimental device 100 includes a liquid tank 1, a bank slope model 2, a camera 3, a water circulation component 4, a water ripple generation component 5, and a computer 6. The bank slope model 2 and the water circulation component 4 are both located in the liquid tank 1, the camera 3 is located in the water circulation component 4, and the camera 3 is connected to the computer 6.

[0031] The top of the liquid tank 1 has a container 11 for holding liquid, which can hold water or other liquid 7 used for testing. The liquid 7 is mainly used to form water ripples in the impact bank model 2.

[0032] The container 11 of the liquid tank 1 is also equipped with a mud and sand filter screen 12. The pore size of the mud and sand filter screen 12 is less than 1mm, which is used to block the mud and sand falling from the bank slope model 2 and prevent the mud and sand from clogging the water circulation component 4 and affecting the water circulation.

[0033] The bank slope model 2 can be made using a mixture of mud and soil, the same material as real riverbank slopes, to simulate real riverbank slopes.

[0034] A bank slope model 2 is located on one side of the liquid tank 1. The bank slope model 2 includes a slope 21, the inclination angle of which is not limited and can be an acute angle. In a preferred embodiment, the inclination angle of the slope 21 is set to 45° so that the slope 21 can produce a significant displacement change when impacted by water, which is convenient for measurement. In addition, the slope 21 can be planar or curved, and is not limited here.

[0035] The lower half of the ramp 21 is located in the receiving groove 11 to receive the impact of water ripples in the receiving groove 11. In other embodiments, the ramp 21 may be entirely located in the receiving groove 11, which is not limited here.

[0036] refer to Figure 3A soil moisture sensor 22 is pre-embedded inside the slope model 2, and the soil moisture sensor 22 is connected to the computer 6. The soil moisture sensor 22 is used to measure the change in soil moisture content of the slope model 2, and can also transmit the measurement data to the computer 6 for reference by the experimenters. In addition, multiple soil moisture sensors 22 can be set, and the multiple soil moisture sensors 22 are evenly spaced inside the slope model 2 to make the measured soil moisture content data of the slope model 2 more accurate.

[0037] A stress sensor 23 is installed on the surface of the slope 21, and the stress sensor 23 is connected to the computer 6. The stress sensor 23 is used to detect the stress on the slope 21 when it is subjected to rainfall from the water circulation component 4 and water ripple waves generated by the water ripple generation component 5. This stress data can be transmitted to the computer 6 for reference by the test personnel. In addition, multiple stress sensors 23 can be set up, and multiple stress sensors 23 are evenly spaced on the slope 21 to make the measured data more accurate when the slope 21 is subjected to rainfall from the water circulation component 4 and water ripple waves generated by the water ripple generation component 5.

[0038] refer to Figure 1 and Figure 2 The water circulation component 4 includes a water pumping pipe 41, a water spray head 42, and a water pump 43. The water pump 43 is located on the water pumping pipe 41, and the water spray head 42 is located at the end of the water pumping pipe 41 away from the receiving tank 11.

[0039] One end of the pumping pipe 41 is inserted into the receiving tank 11 for water flow; the other end of the pumping pipe 41 is located above the slope 21, and a spray head 42 is installed at this end, which can be understood as the spray head 42 also being located above the slope 21. Driven by the water pump 43, the water in the receiving tank 11 can flow through one end of the pumping pipe 41 to the spray head 42 at the other end. The spray head 42 sprays the water onto the slope 21 in the form of a shower, thereby simulating artificial rainfall.

[0040] The water pipe 41 includes a main pipe 411 and a branch pipe 412. The branch pipe 412 can be detachably inserted into the main pipe 411. The connection between the main pipe 411 and the branch pipe 412 can be sealed and bonded with water-swellable adhesive to prevent water leakage.

[0041] A water pump 43 is installed on the main pipe 411. One end of the main pipe 411 extends into the receiving tank 11. When the water pump 43 is working, it can draw water from the receiving tank 11 to the main pipe 411, and then the main pipe 411 drives the water to the branch pipe 412.

[0042] There are multiple branch pipes 412, all of which are connected to the main pipe 411. The main pipe 411 can deliver water to the multiple branch pipes 412, so that all the branch pipes 412 can spray water, thereby expanding the rainfall area.

[0043] refer to Figure 4 Each branch pipe 412 is L-shaped. Multiple water nozzles 42 and multiple cameras 3 are provided at the ends of the branch pipes 412 away from the main pipe 411. The multiple water nozzles 42 and multiple cameras 3 are evenly spaced and staggered along the length extension direction of the corresponding branch pipe 412, which is beneficial to expand the rainfall area of ​​the water nozzles 42 and the shooting area.

[0044] The water pump 43 can be a variable frequency pump. The water pump 43 can adjust the output power to control the pumping rate of the receiving tank 11, thereby adjusting the spraying rate of the spray head 42 and adjusting the amount of rainfall.

[0045] Camera 3 is located at the end of branch pipe 412 furthest from main pipe 411, with its lens pointing vertically downwards towards the position of slope 21 near the liquid surface. The displacement changes of slope 21 under different rainfall levels and the impact of varying degrees of water ripples can be analyzed in real time through the imaging of camera 3. Camera 3 is also connected to computer 6, and the data obtained by camera 3 can be displayed on computer 6 for intuitive reference by experimental personnel.

[0046] The number of cameras 3 can be multiple, and multiple cameras 3 can simultaneously measure the displacement changes generated by the slope 21. When the distances measured by multiple cameras 3 are different but the deviations are small, the average value can be taken to improve the accuracy of the measurement.

[0047] The number of water nozzles 42 can also be multiple, with multiple water nozzles 42 arranged linearly at intervals on the branch pipe 412 to expand the water spraying area. The sprayed water can cover the entire slope 21 to simulate a real rainfall scene.

[0048] refer to Figure 5 The water ripple generation component 5 includes a support 51, a drive mechanism 52, and a float 53. The drive mechanism 52 is located on the support 51 and connected to the float 53. It is used to drive the float 53 to move on the liquid surface of the receiving tank 11 to generate water ripples. The water ripples can impact the slope 21 of the bank slope model 2.

[0049] The bottom of the bracket 51 has multiple casters 511. The bracket 51 is supported on the ground by the casters 511 and can move on the ground by the casters 511 to adjust the position of the float 53 of the water ripple generating component 5.

[0050] Each caster wheel 511 is also equipped with a foot brake 512, which is used to unlock or lock the caster wheel 511. When the foot brake 512 locks the caster wheel 511, the caster wheel 511 cannot roll. When the foot brake 512 unlocks the caster wheel 511, the caster wheel 511 can roll on the ground.

[0051] The density of the float 53 is less than that of water. For example, the material of the float 53 can be foam, so that it can float on the water surface. The shape of the float 53 is not limited. For example, it can be made into the shape of a boat so that the water ripples generated by the float 53 moving on the water surface are more realistic, the impact force generated on the slope 21 is more realistic, and the measured data is more valuable.

[0052] The drive mechanism 52 includes a first rotating wheel 521, a second rotating wheel 522, a first power box 523, a second power box 524, a transmission belt 525, and a traction rope 526. The first rotating wheel 521 and the second rotating wheel 522 are both rotatably mounted on the bracket 51. The transmission belt 525 is simultaneously sleeved on the first rotating wheel 521 and the second rotating wheel 522, so that the first rotating wheel 521 and the second rotating wheel 522 can rotate synchronously through the transmission belt 525.

[0053] One end of the traction rope 526 is connected to the transmission belt 525, and the other end of the traction rope 526 is connected to the float 53. When the first wheel 521 and / or the second wheel 522 rotate, they can drive the transmission belt 525 to move, thereby the transmission belt 525 drives the float 53 to move on the liquid surface of the accommodating tank 11 through the traction rope 526, thus generating water ripples.

[0054] It is understood that in other embodiments, the float 53 can be driven to move on the water surface to generate water ripples in other ways, such as directly connecting the telescopic rod of a drive cylinder to the float 53, and driving the telescopic rod to extend and retract through the drive cylinder to drive the float 53 to move back and forth.

[0055] The direction of movement of the drive belt 525 is perpendicular to the extension direction of the slope 21, so the direction of movement of the float 53 on the water surface is also perpendicular to the extension direction of the slope 21. In other embodiments, the direction of movement of the drive belt 525 can also be arranged at other angles, for example, the direction of movement of the drive belt 525 can be set at an angle of 45° or 60° perpendicular to the extension direction of the slope 21. In this case, if the speed of movement of the float 53 remains constant, the impact force of the water ripples generated by the float 53 on the slope 21 may be different. The test personnel can adjust the direction of movement of the drive belt 525 to create water ripples in different directions on the slope 21, thereby more realistically reflecting reality and making the measured data more valuable.

[0056] The first rotating wheel 521 is equipped with a first rocker arm 527, and the second rotating wheel 522 is equipped with a second rocker arm 528. The test personnel can manually operate at least one of the first rocker arm 527 and the second rocker arm 528 to drive the transmission belt 525 to move, and then drive the float 53 to move on the water surface through the transmission belt 525 and the traction rope 526.

[0057] In addition to manually driving the float 53 to move via the first rocker arm 527 and the second rocker arm 528, in other embodiments, the movement of the float 53 can also be automatically controlled by controlling the first power box 523 and / or the second power box 524 to save manpower.

[0058] The first power box 523 and the second power box 524 have the same structure. The first power box 523 is connected to the first rotating wheel 521 to drive the first rotating wheel 521 to rotate. The second power box 524 is connected to the second rotating wheel 522 to drive the second rotating wheel 522 to rotate.

[0059] The first power box 523 includes a housing 5231 and a start button 5232, a speed change button 5233, a motor (not shown in the figure), a drive rod 5234, and a frequency converter (not shown in the figure) disposed on the housing 5231. The housing 5231 is mounted on a bracket 51. The frequency converter is connected to the speed change button 5233 and the motor. The motor is connected to the start button 5232 and the drive rod 5234. Under the control of the start button 5232, the motor can drive the drive rod 5234 to rotate. The other end of the drive rod 5234 away from the motor is connected to the first rotating wheel 521, so the drive rod 5234 can drive the first rotating wheel 521 to rotate.

[0060] The frequency converter can change the motor speed under the control of the speed change button 5233, thereby changing the speed of the first rotor 521 and thus the speed of the float 53 on the water surface. When the speed of the float 53 on the water surface is different, the size of the water ripples generated by the float 53 is different, and the impact on the ramp 21 is also different. Therefore, the user can selectively press the speed change button 5233 according to the actual experimental needs to record the displacement changes of the ramp 21 under the impact of different water ripples. The speed change button 5233 can be set with three or more speeds so that the float 53 can generate different water ripples on the water surface at various different speeds.

[0061] The second power box 524 has the same structure as the first power box 523, so the test personnel can control the second power box 524 or the first power box 523, or control the second power box 524 and the first power box 523 at the same time, to drive the float 53 to move on the water surface and generate water ripples.

[0062] In actual experiments, the water in the containment tank 11 can submerge a portion of the slope 21. Then, the water pump 43 is activated to control the water spray head 42 to apply rainfall to the slope 21, while simultaneously controlling the float 53 to generate water ripples that impact the slope 21. The simultaneous implementation of these three working conditions allows for a more realistic reconstruction of the environment in which the slope 21 exists in a natural setting, and enables a more accurate measurement of the displacement changes of the slope 21 under these conditions. This provides a more meaningful reference for subsequent practical riverbank protection work.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications, substitutions, and improvements without departing from the concept of the present invention, and these should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of this invention should be determined by the claims.

Claims

1. A testing apparatus, characterized in that, include: A liquid container, having a holding tank for holding liquids; A bank slope model is provided in the liquid holding tank, and the surface of the bank slope model is formed with a slope, at least a portion of which is located in the receiving tank; A water ripple generating component includes a float and a drive mechanism connected to each other. The drive mechanism can drive the float to move horizontally on the liquid surface of the receiving tank, so that the liquid surface of the receiving tank forms water ripples that impact the slope. The drive mechanism includes a traction rope connected to the float, and the drive mechanism can pull the float to move on the liquid surface of the accommodating tank via the traction rope. The drive mechanism further includes a transmission belt, a first wheel and a second wheel, and the water ripple generating component further includes a bracket. The first wheel and the second wheel are both rotatably mounted on the bracket. The transmission belt is simultaneously sleeved on the first wheel and the second wheel. The transmission belt is connected to the traction rope. At least one of the first wheel and the second wheel can rotate to drive the transmission belt to move, so that the transmission belt drives the traction rope to pull the float. A camera is positioned above the slope and is used to monitor the displacement changes of the slope caused by the impact of the water ripples.

2. The experimental apparatus according to claim 1, characterized in that, The driving mechanism further includes a first rocker arm disposed on the first rotating wheel and a second rocker arm disposed on the second rotating wheel. The first rocker arm can drive the first rotating wheel to rotate under the drive of an external force, and the second rocker arm can drive the second rotating wheel to rotate under the drive of an external force.

3. The experimental apparatus according to claim 1, characterized in that, The driving mechanism also includes a motor and a drive rod. One end of the drive rod is connected to the motor, and the other end is connected to the first rotating wheel. The motor can drive the first rotating wheel to rotate through the drive rod.

4. The experimental apparatus according to claim 3, characterized in that, The drive mechanism also includes a frequency converter, which is connected to the motor to adjust the rotational speed of the motor driving the drive rod.

5. The test apparatus according to claim 1, characterized in that, The drive mechanism also includes casters located at the bottom of the bracket, and the drive mechanism can adjust its position by sliding on the ground via the casters.

6. The experimental apparatus according to claim 1, characterized in that, The test apparatus also includes a water pump, a spray head, and a water pump. One end of the water pump is located in the receiving tank, and the other end of the water pump is located above the slope. The spray head is located at the end of the water pump away from the receiving tank, and the water pump is located in the water pump to drive the liquid in the receiving tank through the water pump and spray it from the spray head onto the slope.

7. The test apparatus according to claim 6, characterized in that, The test apparatus also includes a soil moisture sensor and a stress sensor installed on the slope.

8. The test apparatus according to claim 6, characterized in that, The float has a space for carrying heavy objects.

Images