A device for simulating dry-wet cycles and water flow scouring of a rock-soil sample

Abstract

The present application relates to the technical fields of rock-soil sample, and discloses a rock-soil sample dry-wet cycle and water flow scouring simulation device, which comprises a box body, a scouring simulation assembly fixedly connected inside the box body, an adjusting mechanism arranged below an end of the scouring simulation assembly extending out of the box body, a metering mechanism arranged below the other end of the scouring simulation assembly extending out of the box body, a collecting box arranged at the bottom of the metering mechanism and fixedly connected with the box body, and a dry-wet simulation assembly arranged at the top of the scouring simulation assembly. The present application can simulate dry-wet environment and water flow scouring environment during dry-wet cycle simulation test and scouring simulation test, simulate the properties of rock-soil sample under different dry-wetness and scouring intensity conditions, facilitate simulation test of rock-soil sample under different conditions, improve the range of simulation conditions of rock-soil sample, facilitate detection test of rock-soil sample by operators, and facilitate analysis of the performance of rock-soil sample.

Description

Technical Field

[0001] This invention relates to the field of soil and rock sample technology, and in particular to a soil and rock sample dry-wet cycle and water flow erosion simulation device. Background Technology

[0002] Soil and rock samples are generally tested in the laboratory, primarily to determine: indicators characterizing the structure and composition of rocks and soils, such as density, water absorption rate, and saturated water absorption rate of rocks; particle size distribution, natural moisture content, density, liquid limit and plastic limit, swelling and shrinkage indices, disintegration indices, and capillary rise height of soils; permeability indices; deformation performance and strength indices. Deformation indices include various moduli of rocks and compressibility coefficient and deformation modulus of soils; strength indices include uniaxial compressive strength and tensile strength of rocks, and internal friction angle and cohesion of rocks and soils. Because laboratory sample handling results in limited testing conditions, it is impossible to simulate the effects of wet and dry conditions on soil samples under natural environmental conditions. Therefore, a soil and rock sample wet-dry cycle and water erosion simulation device is proposed. Summary of the Invention

[0003] To address the technical problem that laboratory-based sample handling, with its limited testing conditions, cannot simulate the effects of wet and dry conditions on soil samples under natural environments, this invention provides a device for simulating wet-dry cycles and water erosion of soil samples.

[0004] The present invention is achieved by the following technical solution: a soil and rock sample dry-wet cycle and water flow scour simulation device, comprising a box body, wherein the box body is fixedly connected to a scour simulation component, an adjustment mechanism disposed below one end of the scour simulation component extending out of the box body, a metering mechanism disposed below the other end of the scour simulation component extending out of the box body, a collection box disposed at the bottom of the metering mechanism and fixedly connected to the box body, a dry-wet simulation component disposed at the top of the scour simulation component, and a lifting adjustment mechanism disposed at the bottom of the scour simulation component and connected to the dry-wet simulation component; an airflow adjustment mechanism is installed on the inner side wall of the box body at the top of the scour simulation component, and a nozzle and a heating lamp are fixedly connected to the inner side wall of the top of the box body;

[0005] The flushing simulation component includes a tray fixed to the housing, a flip plate abutting against the top of one end of the tray extending into the housing, an arc-shaped guide tube fixed to the bottom of the tray, an arc-shaped guide rod slidably sleeved on the other end of the guide tube and fixed to the bottom of the flip plate, a drive unit one fixed to the bottom of the tray, and two sets of L-shaped push-pull plates fixed to the output end of the drive unit one. The ends of the two sets of push-pull plates that are close to each other are fixedly connected to a side baffle that is slidably connected to the top of the tray. The sides of the two sets of side baffles that are close to each other are slidably connected to a movable baffle that is slidably connected to the top of the flip plate. The ends of the two sets of movable baffles that are away from the tray are fixedly connected to an end baffle that is slidably connected to the top of the flip plate. The tray has an insertion hole.

[0006] Through the above technical solution, the lifting and adjustment mechanism is activated to lift the soil sample onto the scour simulation component. At this time, the soil sample is located above the scour simulation component. At the same time, the adjustment mechanism is used to adjust the state of the wet and dry simulation component, and adjust the scour force and scour water volume of the soil sample from the wet and dry simulation component to carry out the scour test operation of the soil sample. When it is necessary to conduct a wet and dry simulation test on the soil sample, the lifting and adjustment mechanism pushes the soil sample upward to the top of the wet and dry simulation component. At this time, the lifting and adjustment mechanism drives the wet and dry simulation component to unfold. After unfolding, the top of the scour simulation component is sealed, and then the wet and dry simulation test is carried out on the soil sample.

[0007] As a further improvement to the above solution, the drive unit one includes two sets of connecting seats fixed to the bottom of the tray, a drive shaft movably sleeved between the two sets of connecting seats, two sets of external threads symmetrically arranged on the outer ring of the drive shaft, an extension rod slidably connected to the tray through the external threads, and the extension rod being fixedly connected to an adjacent push-pull rod. A motor fixedly connected to the connecting seats is installed at the end of the drive shaft. The adjustment mechanism includes a drive unit two fixed to the outside of the housing and a pull rod one hinged to the top output end of the drive unit two and hinged to the bottom of the flip plate.

[0008] Through the above technical solution, the drive unit two on the adjustment mechanism is activated, causing the pull rod one to move. Then, the pull rod one drives the tilting plate to rotate along the edge of the included angle at the top of the tray. At this time, the guide tube and guide rod at the bottom of the tray limit the tilting position of the tilting plate, ensuring that the tilting plate rotates along the edge of the included angle at the top of the tray, thereby adjusting the tilting angle of the tilting plate. After that, the motor on the drive unit one at the bottom of the tray is activated, and the drive shaft rotates. Then, under the action of two sets of symmetrically arranged external threads, the two sets of extension rods move towards each other or away from each other. Then, the extension rods drive the push-pull rod to move, causing the two sets of side baffles to move towards each other or away from each other. At this time, the side baffles drive the movable baffles that are slidably connected to them to move, thereby adjusting the distance between the two sets of movable baffles, thereby increasing the width of the flushing water flowing into the side baffles and the movable baffles, and realizing the adjustment of the flushing water depth.

[0009] As a further improvement to the above solution, two sets of arc-shaped limiting grooves are provided on the side of the two sets of side baffles that are close to each other. The two sets of limiting grooves on the same side baffle are coaxially arranged. The boundary line of the limiting groove abutting the top edge of the tray and the top edge of the flip plate is coaxial. The limiting groove is slidably sleeved with a slider that is fixed to the adjacent movable baffle. The cross-section of the limiting groove and the cross-section of the slider are both T-shaped structures.

[0010] Through the above technical solution, the limiting groove ensures that the movable baffle does not shift with the flip plate when the flip plate flips, and at the same time, it can move together with the side baffle when it moves.

[0011] As a further improvement to the above solution, the lifting and adjustment mechanism includes a drive unit three fixed to the inner wall of the bottom of the box, a lifting plate fixed to the output end of the drive unit three, a feeding unit fixed to the top of one end of the lifting plate, an extrusion block slidably connected to the other end of the lifting plate and slidably connected to the inner wall of the bottom of the box, an extension rod fixed to one side of the extrusion block and slidably sleeved with the box, a connecting plate fixed to one end of the extension rod extending out of the box, and a drive tube fixed to both sides of the top of the connecting plate and threadedly sleeved with the dry and wet simulation component.

[0012] Through the above technical solution, the position of the material feeding unit is adjusted on the one hand, and the power is provided for the opening and closing of the dry and wet simulation component on the other hand, during the lifting process of the lifting plate.

[0013] As a further improvement to the above solution, the dry and wet simulation component includes two sets of parallel rotating rods that are movably sleeved with the housing, a base plate fixedly sleeved on the outer ring of the rotating rods, a sliding groove along the length direction opened at the bottom of the side of the two sets of base plates that are close to each other, a movable pad slidably connected to the sliding groove, a semi-circular slot opened at the side of the two sets of movable pads that are close to each other, a second pull rod hinged at the bottom of the side of the two sets of movable pads that are far apart from each other, a sleeve slidably sleeved at the other end of the second pull rod, a crossbar fixed to the inner wall of the housing hinged at the other end of the sleeve, an elastic membrane fixed to the inner wall of the housing at the top of the side of the two sets of base plates that are far apart from each other, and the rotating rods are threadedly sleeved with the lifting adjustment mechanism.

[0014] With the above technical solution, when the rotating rod rotates, the substrate deflects from the vertical direction to the horizontal direction. At the same time, the movable pad moves away from the substrate under the action of the spring on the sleeve. The two sets of substrates move towards each other until the two sets of movable pads touch each other. Then the feeding plate extends into the slot between the two sets of movable pads and engages. At this time, a U-shaped drainage channel is formed between the two sets of movable pads and the two sets of substrates.

[0015] As a further improvement to the above solution, the measuring mechanism includes an L-shaped support fixed to the outside of the box, a weighing sensor fixed to the bottom of the support, a U-shaped support fixed to the bottom of the weighing sensor, a water receiving trough fixed to the bottom of the support, a drain pipe fixed to the bottom of the water receiving trough, a connecting pipe sleeved on the bottom outer ring of the drain pipe and fixed to the collection box, and a drain plate fixed inside the water receiving trough and inclined. The drain plate has drainage holes, and multiple filter layers are laid on the top of the drain plate. The pore size of the multiple filter layers decreases from top to bottom.

[0016] With the above technical solution, the flushing water after rinsing the soil sample is discharged from the end of the tray into the water receiving tank on the metering mechanism. At this time, the filter layer filters the flushing water, and the weighing sensor measures the weight change of the water receiving tank during the rinsing process.

[0017] As a further improvement to the above solution, the airflow adjustment mechanism includes a blower housing fixedly sleeved with the housing, an air inlet pipe fixedly sleeved on the side of the blower housing away from the housing, an exhaust fan fixedly sleeved on the air inlet pipe, blades arranged sequentially from top to bottom inside the blower housing, a rotating shaft fixedly sleeved on one end of the blades and movably sleeved with the blower housing, a gear fixedly sleeved on one end of the rotating shaft extending out of the blower housing, a rack meshing on one side of the gear and slidably connected with the blower housing, and a drive unit four fixedly sleeved on the top of the rack and fixedly sleeved with the blower housing.

[0018] The above technical solution uses a drive unit to push a rack up and down, which in turn drives a gear to rotate, causing the shaft to rotate. This adjusts the tilt direction of the blades and the exhaust direction from the blower housing, simulating natural wind from different directions.

[0019] As a further improvement to the above solution, the feeding unit includes a top rod fixedly connected to the lifting plate, a second weighing sensor fixedly connected to the top of the top rod, and a feeding plate fixedly connected to the top of the second weighing sensor.

[0020] As a further improvement to the above solution, the extrusion block is provided with a holding channel one, an extrusion channel and a holding channel two in sequence from top to bottom on the side near the lifting plate, and the holding channel one, the extrusion channel and the holding channel two are slidably connected to the lifting plate.

[0021] Through the above technical solution, during the lifting process of the lifting plate, when the lifting plate slides on the extrusion channel, it pushes the extrusion block to move.

[0022] As a further improvement to the above solution, a drainage trough fixedly connected to the box body is fixed between the two sets of rotating rods. One end of the drainage trough extending out of the box body is connected to the collection box through a pipe. A water pipe located on the top of the flushing simulation component is installed on the top of the adjustment mechanism, and both the water pipe and the spray pipe are connected to the collection box. A water pump is installed on both the water pipe and the spray pipe.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. This invention realizes the simulation test of dry-wet cycle and scour simulation test of soil samples. During the scour simulation test, the scour force and scour depth can be adjusted according to the scour needs. The soil and rock and scour water after scour can be filtered and collected during the scour test, which is convenient for measurement during the scour simulation test. Real-time data acquisition of scour simulation test can be realized, and relevant physicochemical tests can also be carried out on the scour water.

[0025] 2. This invention can simulate dry and wet environments and water flow scouring environments during dry and wet cycle simulation tests and scouring simulation tests, simulating the properties of rock and soil samples under different humidity and scouring intensities. This facilitates simulation tests on rock and soil samples under different conditions, expands the range of simulation conditions for rock and soil samples, makes it easier for operators to conduct tests on rock and soil samples, and facilitates the analysis of the performance of rock and soil samples. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the dry and wet simulation component provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the scouring simulation component provided by the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the side baffle provided by the present invention;

[0030] Figure 5 This is a schematic diagram of the extrusion block provided by the present invention.

[0031] Explanation of key symbols:

[0032] 1. Box body, 2. Flushing simulation component, 3. Adjustment mechanism, 4. Lifting and adjustment mechanism, 5. Dry and wet simulation component, 6. Metering mechanism, 7. Collection box, 8. Airflow adjustment mechanism, 9. Nozzle, 10. Heating lamp, 21. Support plate, 22. Tilting plate, 23. Guide tube, 24. Guide rod, 25. Drive unit one, 26. Push-pull plate, 27. Side baffle, 28. Movable baffle, 29. End baffle, 271. Limiting groove, 41. Drive unit three, 42. Lifting plate, 43. Discharge unit, 44. Extrusion block, 45. Extension rod, 46. Drive tube, 51. Rotating rod, 52. Base plate, 53. Slide groove, 54. Movable pad, 55. Slot, 56. Pull rod two, 57. Sleeve, 58. Elastic membrane, 442. Holding channel two, 443. Extrusion channel, 444. Holding channel one. Detailed Implementation

[0033] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0034] Example 1:

[0035] Please combine Figures 1-5This embodiment of a soil and rock sample dry-wet cycle and water flow scouring simulation device includes a box 1, a scouring simulation component 2 fixedly connected inside the box 1, an adjustment mechanism 3 located below one end of the scouring simulation component 2 extending from the box 1, a metering mechanism 6 located below the other end of the scouring simulation component 2 extending from the box 1, a collection box 7 located at the bottom of the metering mechanism 6 and fixedly connected to the box 1, a dry-wet simulation component 5 located at the top of the scouring simulation component 2, a lifting adjustment mechanism 4 located at the bottom of the scouring simulation component 2 and connected to the dry-wet simulation component 5, an airflow adjustment mechanism 8 installed on the top of the scouring simulation component 2 on the inner wall of the box 1, and a nozzle 9 and a heating lamp 10 fixedly connected to the top inner wall of the box 1.

[0036] The flushing simulation component 2 includes a tray 21 fixed to the housing 1, a flip plate 22 abutting against the top of one end of the tray 21 extending into the housing 1, an arc-shaped guide tube 23 fixed to the bottom of the tray 21, an arc-shaped guide rod 24 slidably sleeved on the other end of the guide tube 23 and fixed to the bottom of the flip plate 22, a drive unit 25 fixed to the bottom of the tray 21, and two sets of L-shaped push-pull plates 26 fixed to the output ends of the drive unit 25. The ends of the two sets of push-pull plates 26 that are close to each other are fixedly connected to a side baffle 27 that is slidably connected to the top of the tray 21. The sides of the two sets of side baffles 27 that are close to each other are slidably connected to a movable baffle 28 that is slidably connected to the top of the flip plate 22. The ends of the two sets of movable baffles 28 that are away from the tray 21 are fixedly connected to an end baffle 29 that is slidably connected to the top of the flip plate 22. The tray 21 has an insertion hole, and a spring is fixedly connected to one end of the guide rod 24 that extends into the guide tube 23.

[0037] The implementation principle of the soil and rock sample wet-dry cycle and water flow scour simulation device in this application embodiment is as follows: The lifting and adjustment mechanism 4 is activated to lift the soil sample onto the scour simulation component 2. At this time, the soil sample is located above the scour simulation component 2. At the same time, the adjustment mechanism 3 is used to adjust the state of the wet-dry simulation component 5, and adjust the scour force and scour water volume of the wet-dry simulation component 5 to carry out the scour test operation of the soil sample. When it is necessary to conduct a wet-dry simulation test on the soil sample, the lifting and adjustment mechanism 4 pushes the soil sample upward to the wet-dry simulation component 5. At this time, the lifting and adjustment mechanism 4 drives the wet-dry simulation component 5 to unfold. After unfolding, it is sealed from the top of the scour simulation component 2, and then the wet-dry simulation test is carried out on the soil sample.

[0038] Example 2:

[0039] The drive unit 25 includes two sets of connecting seats fixed to the bottom of the support plate 21, a drive shaft movably sleeved between the two sets of connecting seats, two sets of external threads symmetrically arranged on the outer ring of the drive shaft, an extension rod slidably connected to the support plate 21 and fixed to the adjacent push-pull rod 26, and a motor fixed to the connecting seats at the end of the drive shaft. The adjustment mechanism 3 includes a drive unit 2 fixed to the outside of the housing 1 and a pull rod 1 hinged to the top output end of the drive unit 2 and hinged to the bottom of the flip plate 22.

[0040] Two sets of arc-shaped limiting grooves 271 are provided on the side of the two sets of side baffles 27 that are close to each other. The two sets of limiting grooves 27 on the same side baffle 27 are coaxially arranged. The boundary line of the limiting groove 271 that abuts the top edge of the support plate 21 and the top edge of the flip plate 22 is coaxial. The limiting groove 271 is slidably sleeved with a slider that is fixed to the adjacent movable baffle 28. The cross-section of the limiting groove 271 and the cross-section of the slider are both T-shaped structures.

[0041] The lifting and adjusting mechanism 4 includes a drive unit 3 41 fixed to the inner side wall of the bottom of the box 1, a lifting plate 42 fixed to the output end of the drive unit 3 41, a feeding unit 43 fixed to the top of one end of the lifting plate 42, an extrusion block 44 slidably connected to the other end of the lifting plate 42 and slidably connected to the inner side wall of the bottom of the box 1, an extension rod 45 fixed to one side of the extrusion block 44 and slidably sleeved with the box 1, a connecting plate fixed to one end of the extension rod 45 extending out of the box 1, and a drive tube 46 fixed to both sides of the top of the connecting plate and threadedly sleeved with the dry and wet simulation component 5.

[0042] The dry and wet simulation component 5 includes two sets of parallel rotating rods 51 that are movably connected to the housing 1, a base plate 52 fixedly connected to the outer ring of the rotating rods 51, a sliding groove 53 provided along the length direction at the bottom of the side of the two sets of base plates 52 that are close to each other, a movable pad 54 slidably connected to the sliding groove 53, a semi-circular slot 55 provided on the side of the two sets of movable pads 54 that are close to each other, a pull rod 56 hinged to the bottom of the side of the two sets of movable pads 54 that are far apart from each other, a sleeve 57 slidably connected to the other end of the pull rod 56, a crossbar 58 fixed to the inner wall of the housing 1 hinged to the other end of the sleeve 57, and an elastic membrane 58 fixed to the inner wall of the housing 1 at the top of the side of the two sets of base plates 52 that are far apart from each other. The rotating rods 51 are threadedly connected to the drive tube 46 of the lifting and adjustment mechanism 4.

[0043] The feeding unit 43 includes a top rod fixedly connected to the lifting plate 42, a second weighing sensor fixedly connected to the top of the top rod, and a feeding plate fixedly connected to the top of the second weighing sensor.

[0044] The extrusion block 44 has a holding channel 444, an extrusion channel 443 and a holding channel 442 arranged from top to bottom on the side near the lifting plate 42. The holding channel 444, the extrusion channel 443 and the holding channel 442 are slidably connected to the lifting plate 42.

[0045] A drainage trough is fixedly connected to the box 1 between the two sets of rotating rods 51. One end of the drainage trough extending out of the box 1 is connected to the collection box 7 through a pipe. A water pipe located on the top of the flushing simulation component 2 is installed on the top of the adjustment mechanism 3. Both the water pipe and the spray pipe 9 are connected to the collection box 7. A water pump is installed on both the water pipe and the spray pipe 9.

[0046] Example 3:

[0047] The measuring mechanism 6 includes an L-shaped support fixed to the outside of the box 1, a weighing sensor fixed to the bottom of the support, a U-shaped support fixed to the bottom of the weighing sensor, a water receiving trough fixed to the bottom of the support, a drain pipe fixed to the bottom of the water receiving trough, a connecting pipe sleeved on the bottom outer ring of the drain pipe and fixed to the collection box 7, and a drain plate fixed inside the water receiving trough and inclined. The drain plate has drain holes through it, and multiple filter layers are laid on the top of the drain plate. The pore size of the multiple filter layers decreases from top to bottom.

[0048] The airflow adjustment mechanism 8 includes a blower housing fixedly sleeved with the housing 1, an air inlet pipe fixedly sleeved on the side of the blower housing away from the housing 1, an exhaust fan fixedly sleeved on the air inlet pipe, blades arranged sequentially from top to bottom inside the blower housing, a rotating shaft 1 fixedly sleeved on one end of the blades and movably sleeved with the blower housing, a gear fixedly sleeved on one end of the rotating shaft 1 extending out of the blower housing, a rack meshing on one side of the gear and slidably connected with the blower housing, and a drive unit 4 fixedly sleeved on the top of the rack and fixedly sleeved with the blower housing.

[0049] Example 4:

[0050] Drive unit two and drive unit four use push rod motors, drive unit three 41 uses a linear module, the top of the dry and wet simulation component 5 is equipped with a temperature sensor fixed to the housing 1, a control box is installed on one side of the housing 1, the controller is installed inside the control box, and a power interface, data interface, display screen and switch are installed on one side of the control box. The controller is connected to the push rod motor, linear module, motor, weighing sensor one, weighing sensor two, water pump, exhaust fan, temperature sensor, power interface, data interface, display screen and switch.

[0051] Working principle:

[0052] During the scouring test of the soil sample, the lifting and adjustment mechanism 4 is activated to lift the soil sample onto the scouring simulation component 2. At this time, the soil sample is located above the scouring simulation component 2. At the same time, the adjustment mechanism 3 is used to adjust the state of the wet and dry simulation component 5, and adjust the scouring force and scouring water volume of the soil sample from the wet and dry simulation component 5 to carry out the scouring test operation of the soil sample. When it is necessary to carry out the wet and dry simulation test of the soil sample, the lifting and adjustment mechanism 4 pushes the soil sample upward to the wet and dry simulation component 5. At this time, the lifting and adjustment mechanism 4 drives the wet and dry simulation component 5 to unfold. After unfolding, it is sealed from the top of the scouring simulation component 2, and then the wet and dry simulation test of the soil sample is carried out.

[0053] During the scouring test, the drive unit 3 41 is started, pushing the lifting plate 42 upward. At this time, the discharge plate on the discharge unit 43 is connected to the insertion hole on the support plate 21. The soil sample placed on the top of the discharge plate extends from the insertion hole on the support plate 21 to the top of the support plate 21.

[0054] When it is necessary to adjust the rinsing force and rinsing depth, the drive unit 2 on the adjustment mechanism 3 is activated, causing the pull rod 1 to move. Then, the pull rod 1 drives the tilting plate 22 to rotate along the edge of the included angle at the top of the tray 21. At this time, the guide tube 23 and guide rod 24 at the bottom of the tray 21 limit the tilting position of the tilting plate 22, ensuring that the tilting plate 22 rotates along the edge of the included angle at the top of the tray 21, thereby adjusting the tilt angle of the tilting plate 22. After that, the motor on the drive unit 25 at the bottom of the tray 21 is activated, the drive shaft rotates, and then the two sets of symmetrical Under the action of the external thread, the two sets of extension rods move toward each other or away from each other. Then the extension rods drive the push-pull rod 26 to move, causing the two sets of side baffles 27 to move toward each other or away from each other. At this time, the side baffles 27 drive the movable baffles 28 that are slidably connected to them to move, thereby adjusting the distance between the two sets of movable baffles 28, thereby increasing the width of the flushing water flowing between the side baffles 27 and the movable baffles 28, and realizing the depth adjustment of the flushing water. After that, the flushing simulation operation under natural environment is carried out in conjunction with the nozzle 9, the heating lamp 10 and the airflow adjustment mechanism 8.

[0055] After rinsing the soil sample, the flushing water is discharged from the end of the tray 21 into the water receiving tank on the metering mechanism 6. At this time, the filter layer filters the flushing water, and the weighing sensor measures the weight change of the water receiving tank during the rinsing process.

[0056] When a dry-wet cycle simulation is required, the drive unit 3 41 is activated, driving the lifting plate 42 to move upward. At this time, the lifting plate 42 moves along the holding channel 2 442 towards the extrusion channel 443 and the holding channel 1 44. When the extrusion channel 443 moves, it pushes the extrusion block 44 to slide. Then the extrusion block 44 drives the extension rod 45 to move. The extension rod 45 drives the drive tube 46 to move. Then, under the action of the thread, it drives the rotating rod 51 to rotate. When the rotating rod 51 rotates, the substrate 52 deflects from the vertical direction to the horizontal direction. At the same time, the movable pad 54 moves away from the substrate 52 under the action of the spring on the sleeve 57. The two sets of substrates 52 move towards each other until the two sets of movable pads 54 touch each other. Then the discharge plate extends into the slot 55 between the two sets of movable pads 54 and engages. At this time, a U-shaped drainage channel is formed between the two sets of movable pads 54 and the two sets of substrates 52. After that, the dry-wet cycle simulation test under natural environment is carried out using the nozzle 9, the heating lamp 10 and the airflow adjustment mechanism 8.

[0057] When using nozzle 9 to simulate rainfall, the amount and duration of simulated rainwater sprayed from nozzle 9 can be adjusted by adjusting the power of the water pump installed on nozzle 9 and the water supply time; heating 10 can be used to perform evaporation sampling of soil samples after rainfall.

[0058] This design enables simulation tests of wet-dry cycles and scour of soil samples. During the scour simulation test, the scour force and depth can be adjusted according to the scour requirements. The design allows for the filtration and collection of the scourted soil and water, facilitating measurement during the scour simulation test and enabling real-time data acquisition. It simulates both wet-dry and water scour environments during the wet-dry cycle and scour simulation tests, mimicking the properties of rock and soil samples under different humidity levels and scour intensities. This facilitates simulation tests of rock and soil samples under various conditions, expands the range of simulation conditions, and makes it easier for operators to conduct tests and analyze the performance of rock and soil samples.

[0059] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A device for simulating wet-dry cycling and water erosion of soil and rock samples, comprising a housing, characterized in that, The box body is internally fixed with a flushing simulation component, an adjustment mechanism located below one end of the flushing simulation component extending from the box body, a metering mechanism located below the other end of the flushing simulation component extending from the box body, a collection box located at the bottom of the metering mechanism and fixedly connected to the box body, a dry and wet simulation component located at the top of the flushing simulation component, and a lifting adjustment mechanism located at the bottom of the flushing simulation component and connected to the dry and wet simulation component. An airflow adjustment mechanism located on the inner side wall of the box body is installed on the top of the flushing simulation component. A nozzle and a heating lamp are fixedly connected to the inner side wall of the top of the box body. The flushing simulation component includes a tray fixed to the housing, a flip plate abutting against the top of one end of the tray extending into the housing, an arc-shaped guide tube fixed to the bottom of the tray, an arc-shaped guide rod slidably sleeved on the other end of the guide tube and fixed to the bottom of the flip plate, a drive unit one fixed to the bottom of the tray, and two sets of L-shaped push-pull plates fixed to the output end of the drive unit one. The ends of the two sets of push-pull plates that are close to each other are fixedly connected to a side baffle that is slidably connected to the top of the tray. The sides of the two sets of side baffles that are close to each other are slidably connected to a movable baffle that is slidably connected to the top of the flip plate. The ends of the two sets of movable baffles that are away from the tray are fixedly connected to an end baffle that is slidably connected to the top of the flip plate. The tray has an insertion hole. The lifting and adjustment mechanism includes a drive unit three fixed to the inner wall of the bottom of the box, a lifting plate fixed to the output end of the drive unit three, a feeding unit fixed to the top of one end of the lifting plate, an extrusion block slidably connected to the other end of the lifting plate and slidably connected to the inner wall of the bottom of the box, an extension rod fixed to one side of the extrusion block and slidably sleeved with the box, a connecting plate fixed to one end of the extension rod extending out of the box, and a drive tube fixed to both sides of the top of the connecting plate and threadedly sleeved with the dry and wet simulation component. The dry and wet simulation component includes two sets of parallel rotating rods that are movably sleeved with the housing, a base plate fixedly sleeved on the outer ring of the rotating rods, a sliding groove along the length direction opened at the bottom of the side of the two sets of base plates that are close to each other, a movable pad slidably connected to the sliding groove, a semi-circular slot opened at the side of the two sets of movable pads that are close to each other, a second pull rod hinged at the bottom of the side of the two sets of movable pads that are far apart from each other, a sleeve slidably sleeved at the other end of the second pull rod, a crossbar fixed to the inner wall of the housing hinged at the other end of the sleeve, an elastic membrane fixed to the inner wall of the housing at the top of the side of the two sets of base plates that are far apart from each other, and the rotating rods are threadedly sleeved with the lifting adjustment mechanism. The extrusion block has a holding channel one, an extrusion channel and a holding channel two in sequence from top to bottom on the side near the lifting plate. The holding channel one, the extrusion channel and the holding channel two are slidably connected to the lifting plate.

2. The device for simulating wet-dry cycling and water erosion of soil and rock samples as described in claim 1, characterized in that, The drive unit one includes two sets of connecting seats fixed to the bottom of the tray, a drive shaft movably sleeved between the two sets of connecting seats, two sets of external threads symmetrically arranged on the outer ring of the drive shaft, an extension rod slidably connected to the tray through the external threads, and the extension rod being fixedly connected to the adjacent push-pull rod. A motor fixedly connected to the connecting seats is installed at the end of the drive shaft. The adjustment mechanism includes a drive unit two fixed to the outside of the housing and a pull rod one hinged to the top output end of the drive unit two and hinged to the bottom of the flip plate.

3. The device for simulating wet-dry cycling and water erosion of soil and rock samples as described in claim 1, characterized in that, Two sets of arc-shaped limiting grooves are provided on the side of each of the two sets of side baffles that are close to each other. The two sets of limiting grooves on the same side baffle are coaxially arranged. The boundary line of the limiting groove abutting the top edge of the tray and the top edge of the flip plate is coaxial. The limiting groove is slidably sleeved with a slider that is fixed to the adjacent movable baffle. The cross-section of the limiting groove and the cross-section of the slider are both T-shaped structures.

4. The device for simulating wet-dry cycling and water erosion of soil and rock samples as described in claim 1, characterized in that, The measuring mechanism includes an L-shaped support fixed to the outside of the box, a weighing sensor fixed to the bottom of the support, a U-shaped support fixed to the bottom of the weighing sensor, a water receiving trough fixed to the bottom of the support, a drain pipe fixed to the bottom of the water receiving trough, a connecting pipe sleeved on the bottom outer ring of the drain pipe and fixed to the collection box, and a drain plate fixed inside the water receiving trough and inclined. The drain plate has drainage holes, and multiple filter layers are laid on the top of the drain plate. The pore size of the multiple filter layers decreases from top to bottom.

5. The device for simulating wet-dry cycling and water erosion of soil and rock samples as described in claim 1, characterized in that, The airflow adjustment mechanism includes a blower housing fixedly sleeved with the housing, an air inlet pipe fixedly sleeved on the side of the blower housing away from the housing, an exhaust fan fixedly sleeved on the air inlet pipe, blades arranged sequentially from top to bottom inside the blower housing, a rotating shaft fixedly sleeved on one end of the blades and movably sleeved with the blower housing, a gear fixedly sleeved on one end of the rotating shaft extending out of the blower housing, a rack meshing on one side of the gear and slidably connected with the blower housing, and a drive unit four fixedly sleeved on the top of the rack and fixedly sleeved with the blower housing.

6. The device for simulating wet-dry cycling and water erosion of soil and rock samples as described in claim 1, characterized in that, The feeding unit includes a top rod fixedly connected to the lifting plate, a second weighing sensor fixedly connected to the top of the top rod, and a feeding plate fixedly connected to the top of the second weighing sensor.

7. The device for simulating wet-dry cycling and water erosion of soil and rock samples as described in claim 1, characterized in that, A drainage trough fixed to the box body is fixed between the two sets of rotating rods. One end of the drainage trough extending out of the box body is connected to the collection box through a pipe. A water pipe located on the top of the flushing simulation component is installed on the top of the adjustment mechanism. Both the water pipe and the spray pipe are connected to the collection box. A water pump is installed on both the water pipe and the spray pipe.

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