Slope stability test system and method

Abstract

The invention relates to a slope stability test system and method, and belongs to the technical field of geotechnical engineering.The system comprises a model box, a slope plate and a water level adjusting device; the slope panel is located in the model box and comprises an upslope panel and a downslope panel, the first end of the downslope panel is connected with the bottom of the model box, and the second end of the downslope panel is movably connected with the upslope panel; the upper side of the slope panel is used for placing a slope material; the water level adjusting device is connected with the water containing space in the model box and used for adjusting the water level of the water containing space in the model box. By rotating the upslope panel, the inclination angle of the upslope material on the upslope panel can be rapidly changed, and the water level of the water containing space in the model box is adjusted through the water level adjusting device, so that the influence of water level fluctuation on the stability of the slope materials with different inclination angles can be studied.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering, and in particular to a slope stability test system and method. Background Art

[0002] As a type of slope, the embankment slope is affected by the periodic changes in water level. The changes in water level will cause an imbalance in the pore water pressure inside and outside the slope, change the stress characteristics of the embankment slope soil, and then affect the stability of the embankment slope.

[0003] At present, some devices can be used to simulate the instability of reservoir bank slopes induced by water level fluctuations. The invention is called a centrifugal model test device and method for simulating water level fluctuations to induce reservoir bank slope instability. The Chinese invention patent (application number is 202011109000.7) realizes the effect of multiple cycles of reservoir water level fluctuations on slope deformation. The Chinese invention patent (application number is 202210329364.9) for the dynamic response test device of transparent soil slope anchor rods and the identification method of slope sliding surface has realized the dynamic response test device of transparent soil slope anchor rods and the identification of slope sliding surface. However, these devices cannot realize the function of cutting slopes at any angle, and these devices cannot conveniently study the influence of water level fluctuations on the stability of slopes with different inclination angles. Summary of the invention

[0004] In view of this, it is necessary to provide a slope stability test system and method to solve the problem that the existing technology cannot comprehensively study the impact of water level fluctuations on the stability of slopes with different inclination angles.

[0005] In order to solve the above problems, in a first aspect, the present invention provides a slope stability test system, the system comprising: a model box, a slope panel and a water level regulating device; the slope panel is located inside the model box, the slope panel comprises an upslope panel and a downslope panel, the first end of the downslope panel is connected to the bottom of the model box, and the second end is movably connected to the upslope panel; The upper side of the slope panel is used for placing slope materials; The water level regulating device is connected to the water containing space in the model box and is used for regulating the water level of the water containing space.

[0006] Optionally, the system further comprises a lifting device, a first end of which is fixed to the bottom of the model box, and a second end of which is in contact with the upslope panel.

[0007] Optionally, the system further comprises: a vacuum pump; the model box further comprises an airtight cover plate, and the airtight cover plate comprises a pressure gauge; The vacuum pump is used to evacuate the interior of the model box; The pressure gauge is used to detect the air pressure inside the model box.

[0008] Optionally, the slope material is transparent soil, and the model box is a transparent model box; the system further includes a water level sensor, a laser device and a camera device; The water level sensor is used to be arranged on the cross section of the slope material; The laser device is used to emit laser light to the slope material, so that the laser light passes through the transparent model box and forms a laser surface inside the slope material; the laser surface and the cross section coincide with each other; The camera device is used to photograph the slope material to obtain the image of the laser surface.

[0009] Optionally, the water level regulating device comprises a water inlet mechanism, a water outlet mechanism and a water level control mechanism; the first ends of the water inlet mechanism and the water outlet mechanism are connected to the water containing space, and the second ends of the water inlet mechanism and the water outlet mechanism are connected to the water level control mechanism; The water inlet mechanism is used to introduce water into the water holding space; The water outlet mechanism is used to discharge the water from the water containing space; The water level control mechanism is used to control the water inlet speed and water inflow of the water inlet mechanism, and to control the water outlet speed and water outlet of the water outlet mechanism.

[0010] In a second aspect, the present invention further provides a slope stability test method, which is applicable to any one of the above-mentioned slope stability test systems, and the method comprises: Adjusting the uphill panel and the downhill panel to form a preset angle; placing slope material on the slope panel; The water level of the water containing space is adjusted by the water level adjusting device.

[0011] Optionally, the adjusting the downhill panel and the uphill panel to form a preset angle includes: The lifting height of the lifting device is adjusted so that a preset angle is formed between the upslope panel and the downslope panel.

[0012] Optionally, the method further includes: Performing a vacuum treatment on the interior of the model box by using the vacuum pump; The air pressure inside the model box is detected by the pressure gauge.

[0013] Optionally, the method further includes: Arrange a water level sensor on the cross section of the slope material; The laser device emits laser light to the slope material, so that the laser light passes through the transparent model box and forms a laser surface inside the slope material; the laser surface and the cross section overlap; photographing the slope material by means of the camera device; The water level data detected by the water level sensor and the image data captured by the camera device are acquired.

[0014] Optionally, the method further includes: Introducing water into the water containing space through the water inlet mechanism; The water in the water containing space is discharged through the water outlet mechanism; The water level control mechanism is used to control the water inlet speed and water inflow of the water inlet mechanism, and the water outlet speed and water outlet of the water outlet mechanism.

[0015] The beneficial effects of the present invention are: The slope stability test system of the present invention comprises: a model box, a slope panel and a water level regulating device; the slope panel is located inside the model box, the slope panel comprises an upslope panel and a downslope panel, the first end of the downslope panel is connected to the bottom of the model box, and the second end is movably connected to the upslope panel; the upper side of the slope panel is used to place the slope material; the water level regulating device is connected to the water containing space in the model box, and is used to adjust the water level of the water containing space. The present invention can change the inclination angle of the slope material on the slope panel by rotating the upslope panel, and the inclination angle of the slope material is convenient to adjust; by adjusting the water level of the water containing space inside the model box by the water level regulating device, the influence of water level fluctuation on the stability of slope materials with different inclination angles can be studied. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an embodiment of a slope stability test system provided by the present invention; Figure 2 A schematic flow chart of an embodiment of a slope stability test method provided by the present invention; 10-model box; 20-slope panel; 201-uphill panel; 202-hinge; 203-downhill panel; 30-water level regulating device; 301-water inlet; 302-water outlet; 303-water outlet solenoid valve; 40-slope material; 50-lifting device; 60-water level sensor; 70-laser device; 80-camera device. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0018] In the description of the embodiments of the present invention, unless otherwise specified, “plurality” means two or more than two.

[0019] The terms "first", "second", etc., involved in the embodiments of the present invention are used to distinguish similar objects, but are not used to describe a specific order or sequence, nor are they used to indicate or imply their relative importance or implicitly indicate the number of technical features indicated. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] Reference Figure 1 , shows a schematic structural diagram of an embodiment of a slope stability test system provided by the present invention, the system comprising: Model box 10, slope panel 20 and water level regulating device 30; the slope panel 20 is located inside the model box 10, and the slope panel 20 includes an upslope panel 201 and a downslope panel 203, a first end of the downslope panel 203 is connected to the bottom of the model box, and a second end is movably connected to the upslope panel 201; The upper side of the slope panel 20 is used to place the slope material 40; The water level regulating device 30 is connected to the water containing space in the model box 10 and is used to regulate the water level of the water containing space.

[0022] The model box 10 includes at least one bottom plate and four side baffles. The bottom plate can be made of impermeable steel plate. To facilitate observation of the influence of water level fluctuation in the model box 10 on the stability of the slope material 40, the side baffles of the model box 10 can be transparent glass plates; or the model box 10 can also be made of transparent glass plates throughout.

[0023] The size of the model box 10 determines whether the physical model test can better restore the actual working conditions. The large-size physical model test can better reflect the actual problems of the project, and the results obtained are often more realistic. However, if the size of the model box 10 is too large, it will directly affect the transparency of the transparent slope, thereby reducing the clarity of the test observation and affecting the test results. Therefore, in order to ensure that the actual working conditions are restored as much as possible while also satisfying the absolute transparency effect in the test, the size of the model box 10 can be set to 600 mm in length, 150 mm in width, 300 mm in height, and 30 mm in wall thickness.

[0024] The slope panel 20 includes an upslope panel 201 and a downslope panel 203. The first end of the downslope panel 203 is connected to the bottom of the model box 10, and the downslope panel 203 and the bottom of the model box 10 may form a preset angle, which is greater than 0. The second end of the downslope panel 203 is movably connected to the upslope panel 201, and the movably connected connection may include a hinge connection, a pin connection, a ball joint connection, and other connection methods. In this embodiment, Figure 1 The hinge connection method is exemplarily shown in the figure, where the second end of the downhill panel 203 is movably connected to the uphill panel 201 through the hinge 202.

[0025] The slope material 40 may be placed on the upper side of the slope panel 20, and the slope material 40 may be transparent soil. Transparent soil is a test material used to simulate the behavior of real soil, and has a transparent property, which facilitates the observation and measurement of the physical and chemical processes inside the soil by optical methods (such as microscopes, laser scanning, etc.). Transparent soil is usually composed of transparent resin, fillers and additives, and can simulate the mechanical properties, hydraulic properties and biochemical properties of real soil. In one example, the slope material 40 may be fused quartz sand.

[0026] The water-containing space may be a part of the space inside the model box including the position where the slope material is placed. For example, the water-containing space may be the space between the slope panel 20 and the bottom plate, side baffles and top plate of the model box 10 .

[0027] The water level regulating device 30 may include a water inlet mechanism and a water outlet mechanism, the first ends of the water inlet mechanism and the water outlet mechanism are connected to the water containing space, the water inlet mechanism is used to introduce water into the water containing space, and the water outlet mechanism is used to export water from the water containing space. The water inlet mechanism may include a water inlet 301, a water inlet pipeline, a water inlet solenoid valve, and a water inlet flowmeter. The first end of the water inlet 301 may extend from the top plate of the model box 10 at a corresponding position above the water side of the slope material 40, and the second end is connected to the water inlet pipeline, and the water inlet solenoid valve and the water inlet flowmeter may be arranged on the water inlet pipeline. The water outlet mechanism may include a water outlet 302, a water outlet pipeline, a water outlet solenoid valve 303, and a water outlet flowmeter. The first end of the water outlet 302 may extend from the side baffle of the model box 10 at a corresponding position in front of the water side of the slope material 40, and the second end is connected to the water outlet pipeline, and the water outlet solenoid valve and the water outlet flowmeter may be arranged on the water outlet pipeline. The water outlet pipeline can also be connected to a water level control hose. By adjusting the height of the water outlet of the water level control hose, the height of the internal horizontal plane of the model box 10 can be adjusted.

[0028] The water level regulating device 30 may also include a water level control mechanism, which may be connected to the second end of the water inlet mechanism and the water outlet mechanism. The water level control mechanism may control the water inlet speed, water inlet volume, water outlet speed and water outlet volume of the water holding space, thereby achieving real-time regulation of the water level height and water level change speed of the water holding space inside the model box 10.

[0029] In the embodiment of the present invention, the second end of the downslope panel 203 is movably connected to the upslope panel 201; therefore, the angle between the upslope panel 201 and the downslope panel 203 can be adjusted according to the test requirements. When conducting a slope stability test, the slope material 40 can be placed on the upper side of the slope panel 20 and the slope material 40 can be shaped; then the inclination of the slope material 40 can be adjusted by adjusting the angle between the upslope panel 201 and the downslope panel 203; or, first adjust the angle between the upslope panel 201 and the downslope panel 203, then place the slope material 40 on the upper side of the slope panel 20 and shape the slope material, and adjust the inclination, and the inclination of the slope material is convenient to adjust. Then, the water level fluctuation of the water-containing space inside the model box 10 can be adjusted by the water level regulating device 30, so as to study the influence of the water level fluctuation on the stability of slope materials with different inclination angles.

[0030] In one embodiment, the slope stability test system further includes a lifting device 50, a first end of which is fixed to the bottom of the model box 10, and a second end of which is in contact with the upslope panel 201. By adjusting the lifting height of the lifting device 50, the angle between the upslope panel 201 and the downslope panel 203 can be adjusted.

[0031] In one embodiment, the slope stability test system further includes a vacuum pump; the model box 10 further includes an airtight cover plate, which may be composed of an acrylic plate, a latex sealing ring, and a pressure gauge. The interior of the model box 10 may be evacuated by the vacuum pump, and the air pressure inside the model box 10 may be detected by the pressure gauge. Through this embodiment, the air pressure inside the model box 10 may be controlled so that the air pressure environment inside the model box is more consistent with the actual working conditions.

[0032] In one embodiment, the slope material 40 is transparent soil, and the model box 10 is a transparent model box; the slope stability test system further includes a water level sensor 60, a laser device 70 and a camera device 80; The water level sensor 60 is used to be arranged on the cross section of the slope material 40; The laser device 70 is used to emit laser to the slope material 40, so that the laser passes through the transparent model box and forms a laser surface inside the slope material 40; the laser surface and the cross section coincide with each other; The camera device 80 is used to photograph the slope material 40 to obtain an image of the laser surface.

[0033] The water level sensor 60 may be a micro pressure water level sensor. The water level sensor 60 may be arranged on the cross section of the slope material 40. The cross section of the slope material 40 refers to the cross section of the slope material 40 perpendicular to its height. The cross section may include at least one, and specifically, may include four. The water level sensor 60 may be arranged on the cross section of the slope material 40 or at the same height.

[0034] The laser device 70 may be a highly stable laser emitting device with temperature control. The laser emitting device emits a beam of laser light through the transparent slope material 40, forming a laser surface inside the slope material 40. When the laser beam propagates inside the material, due to the refractive index, absorptivity and other characteristics of the material, the laser beam will form a specific propagation path inside the material. In some cases, the propagation path of the laser beam will form a plane or area inside the material, and this plane or area is the laser surface. By adjusting the parameters of the laser (such as power, wavelength, focus, etc.), the size, shape and position of the laser surface can be controlled. During the test, the laser surface can be adjusted to the position to be detected inside the slope material 40.

[0035] When the laser irradiates the molten quartz particles in the slope material 40, each quartz particle forms a light spot, and then the camera device 80 continuously collects images of these light spots. Finally, the computer is connected to store these images in the order of collection, so that the deformation and failure evolution process of the slope material 40 can be fully recorded.

[0036] The camera device 80 may be a high-speed digital camera (PENTAX K-3) equipped with a macro lens (PENTAX-D FA 100mm F2.8). The camera device 80 is used to photograph the slope material 40 to obtain dynamic changes of particles inside the slope material 40 .

[0037] In this embodiment, the water level change on the cross section can be obtained through the water level sensor 60, and the deformation and damage of quartz particles on the cross section can be obtained through the camera device. The combination of the two can better study the impact of water level fluctuations on the slope.

[0038] In one embodiment, the slope stability test system further comprises a ruler engraved with water level height, and the ruler can be hung on the side baffle of the model box 10 .

[0039] The slope stability test system of the embodiment of the present invention realizes real-time regulation of water level height and water level change speed through a water level control mechanism; realizes real-time acquisition of internal deformation data of the slope through a water level sensor and a camera device; and realizes visualization research on deformation and instability of the slope under different slope cutting conditions by splitting the slope panel into an uphill panel and a downhill panel and setting an adjustable angle between the uphill panel and the downhill panel.

[0040] Reference Figure 2 , shows a schematic flow chart of an embodiment of a slope stability test method provided by the present invention, the method is applicable to any of the above-mentioned slope stability test systems, and the method comprises: S201, adjusting the uphill panel 201 and the downhill panel 203 to form a preset angle.

[0041] S202 , placing the slope material 40 on the slope panel 20 .

[0042] S203, adjusting the water level of the water containing space by means of the water level regulating device 30.

[0043] The order of the steps S201 and S202 can be interchanged. For example, the first preset angle between the upslope panel 201 and the downslope panel 203 can be adjusted first, and then the slope material 40 is placed on the slope panel 20, and finally the water level inside the model box is adjusted by the water level regulating device 30 to conduct the test study. Alternatively, the slope material 40 can be placed on the slope panel 20 first, and then the first preset angle between the upslope panel 201 and the downslope panel 203 is adjusted, and after the angle between the upslope panel 201 and the downslope panel 203 is adjusted, the water level inside the model box 10 is adjusted by the water level regulating device 30 to conduct the test study.

[0044] In this embodiment, the second end of the downslope panel 203 is movably connected to the upslope panel 201; therefore, the angle between the upslope panel 201 and the downslope panel 203 can be adjusted according to the test requirements. When conducting a slope stability test, a slope material 40 can be placed on the upper side of the slope panel 20 and the slope material 40 can be shaped. Then, the inclination angle of the slope material 40 is adjusted by adjusting the angle between the upslope panel 201 and the downslope panel 203. Finally, the water level fluctuation inside the model box 10 is adjusted by the water level regulating device 30 to study the influence of the water level fluctuation on the stability of slope materials with different inclination angles.

[0045] In one embodiment, the step of adjusting the preset angle between the downhill panel 203 and the uphill panel 201 specifically includes: adjusting the lifting height of the lifting device 50 so that the preset angle is formed between the uphill panel 201 and the downhill panel 203.

[0046] In one embodiment, the slope stability test method further includes: evacuating the interior of the model box 10 by means of a vacuum pump; and detecting the air pressure inside the model box 10 by means of a pressure gauge.

[0047] In one embodiment, the slope stability test method further includes: arranging a water level sensor 60 on the cross section of the slope material 40; emitting a laser to the slope material 40 through a laser device 70 so that the laser passes through a transparent model box and forms a laser surface inside the slope material 40; the laser surface and the cross section coincide with each other; photographing the slope material 40 through a camera device 80; and obtaining water level data detected by the water level sensor 60 and image data photographed by the camera device 80.

[0048] In one embodiment, the slope stability test method also includes: introducing water into the water holding space through a water inlet mechanism; discharging water from the water holding space through a water outlet mechanism; controlling the water inlet speed and water inflow of the water inlet mechanism through a water level control mechanism, and controlling the water outlet speed and water outflow of the water outlet mechanism.

[0049] The present invention is further described below with a complete slope stability test method: Step 1: Combined with the shape and scale of the prototype slope, and based on the similarity ratio between the site and the model, a model box is prepared. The model box is made of white glass, and the external dimensions are set to 600mm long, 150mm wide, 300mm high, and 30mm thick. The model box is also equipped with an airtight cover plate, which is composed of an acrylic plate, a latex sealing ring, and a pressure gauge. The model box can be connected to an external vacuum pump to evacuate the inside of the model box, and the pressure gauge can be used to monitor the changes in the air pressure in the model box in real time.

[0050] Step 2: Add the dyed fused quartz particles to the sample in layers, then inject the calcium bromide solution, and vacuum saturate the sample. Place the prepared sample on the slope panel in the model box, shape the sample into a slope shape, and bury the water level sensor inside the slope model. Place the laser device on one side of the model box, turn on the laser device so that the laser device emits laser, forms a clear laser surface inside the slope model, and adjust the laser surface to the position to be measured inside the slope model.

[0051] Step 3: Aim the high-speed digital camera lens at the center of the slope model, and make the lens axis perpendicular to the laser surface, and record at a rate of 60 frames / s.

[0052] Step 4: Turn on the water supply system and inject water into the water level simulation area (the area between the water side of the slope model and the side baffle of the model box) through the water inlet on the top of the model box. Water begins to accumulate in the model box. At this time, control the opening size of the water inlet solenoid valve to control the change of the hydraulic gradient in the water level simulation area, simulate the water level rising process, observe the real-time data, and wait for the air pressure in the model to stabilize, indicating that the infiltration is basically completed. Each record is made after the slope model is stable.

[0053] Step 5: Close the water inlet and open the water outlet. The water outlet is connected to a water level control hose. By adjusting the height of the water outlet of the water level control hose, the height of the water plane inside the model box can be adjusted. The water level in the water level simulation area is lowered at a certain speed to simulate the water level drop process until the slope model deforms and becomes unstable, and the test is stopped. The outlet of the water outlet pipe connected to the water outlet of the model box and the outlet of the water level control hose are equipped with stainless steel filters.

[0054] Step 6: Adjust the lifting device, change the slope of the slope model, and repeat steps 4 and 5 to simulate the deformation and instability of the slope at different slope angles.

[0055] The slope stability test method of the embodiment of the present invention realizes real-time regulation of water level height and water level change speed through a water level control mechanism; realizes real-time acquisition of internal deformation data (water level data and image data) of the slope through a water level sensor and a camera device; and can select different slope angle schemes according to actual needs to realize visualization research on deformation and instability of the slope under different slope cutting conditions. The present invention has an open structure, flexible and convenient installation, broad application prospects, and is of great value to physical slope model test research.

Claims

1. A slope stability test system, characterized in that: include: A model box, a slope panel and a water level regulating device; the slope panel is located inside the model box, the slope panel includes an upslope panel and a downslope panel, the first end of the downslope panel is connected to the bottom of the model box, and the second end is movably connected to the upslope panel; The upper side of the slope panel is used for placing slope materials; The water level regulating device is connected to the water containing space in the model box and is used for regulating the water level of the water containing space.

2. The slope stability test system according to claim 1, characterized in that: The system further comprises a lifting device, a first end of which is fixed to the bottom of the mold box, and a second end of which is in contact with the upslope panel.

3. The slope stability test system according to claim 1, characterized in that: The system further comprises: a vacuum pump; the model box further comprises an airtight cover plate, and the airtight cover plate comprises a pressure gauge; The vacuum pump is used to evacuate the interior of the model box; The pressure gauge is used to detect the air pressure inside the model box.

4. The slope stability test system according to claim 1, characterized in that: The slope material is transparent soil, and the model box is a transparent model box; the system also includes a water level sensor, a laser device and a camera device; The water level sensor is used to be arranged on the cross section of the slope material; The laser device is used to emit laser light to the slope material, so that the laser light passes through the transparent model box and forms a laser surface inside the slope material; the laser surface and the cross section coincide with each other; The camera device is used to photograph the slope material to obtain the image of the laser surface.

5. The slope stability test system according to claim 1, characterized in that: The water level regulating device comprises a water inlet mechanism, a water outlet mechanism and a water level control mechanism; the first ends of the water inlet mechanism and the water outlet mechanism are connected to the water containing space, and the second ends of the water inlet mechanism and the water outlet mechanism are connected to the water level control mechanism; The water inlet mechanism is used to introduce water into the water holding space; The water outlet mechanism is used to discharge the water from the water containing space; The water level control mechanism is used to control the water inlet speed and water inflow of the water inlet mechanism, and to control the water outlet speed and water outlet of the water outlet mechanism.

6. A slope stability test method, applicable to the slope stability test system according to any one of claims 1 to 5, the method comprising: Adjusting the uphill panel and the downhill panel to form a preset angle; placing slope material on the slope panel; The water level of the water containing space is adjusted by the water level adjusting device.

7. The slope stability test method according to claim 6, characterized in that: The step of adjusting the downhill panel and the uphill panel to form a preset angle comprises: The lifting height of the lifting device is adjusted so that a preset angle is formed between the upslope panel and the downslope panel.

8. The slope stability test method according to claim 6, characterized in that: The method further comprises: Performing a vacuum treatment on the interior of the model box by using the vacuum pump; The air pressure inside the model box is detected by the pressure gauge.

9. The slope stability test method according to claim 6, characterized in that: The method further comprises: Arrange a water level sensor on the cross section of the slope material; The laser device emits laser light to the slope material, so that the laser light passes through the transparent model box and forms a laser surface inside the slope material; the laser surface and the cross section overlap; photographing the slope material by means of the camera device; The water level data detected by the water level sensor and the image data captured by the camera device are acquired.

10. The slope stability test method according to claim 6, characterized in that: The method further comprises: Introducing water into the water containing space through the water inlet mechanism; The water in the water containing space is discharged through the water outlet mechanism; The water level control mechanism is used to control the water inlet speed and water inflow of the water inlet mechanism, and the water outlet speed and water outlet of the water outlet mechanism.

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