Freeze-thaw cycle simulation slope erosion test device

Abstract

The utility model relates to a test device for simulating freeze-thaw cycle side slope erosion, which belongs to the technical field of side slope erosion experiments and comprises a vertical side blowing air curtain for side slope erosion experiments, and a watering device and an adjusting structure are arranged above the vertical side blowing air curtain. The sprinkling equipment comprises a pump body, a spray pipe, a double-shaft motor and a plurality of nozzles fixedly communicated with the outside of the spray pipe, connecting shafts are fixedly mounted on two output shafts of the double-shaft motor, one connecting shaft is connected with the output end of the pump body, and a mounting plate is arranged on the back surface of the spray pipe. According to the test device for simulating freeze-thaw cycle side slope erosion, water mist is blown to a side slope through the vertical side blowing air curtain, the side slope erosion process in the natural environment can be simulated more truly, the humidity of the surface of the side slope can be increased by adding the water mist, and therefore the water migration and phase change processes in the freeze-thaw cycle process are accelerated; the erosion rate and mode of the slope are further influenced, and the advantage that the influence of rainfall on slope erosion can be simulated is achieved.

Description

Technical Field

[0001] This utility model relates to the field of slope erosion experimental technology, specifically to a test device for simulating freeze-thaw cycle slope erosion. Background Technology

[0002] In seasonally frozen soil regions, there are freeze-thaw disasters related to permafrost changes, such as thermo-thaw landslides, frost heave mounds, thaw subsidence, and frost heave. The existence and development of these disasters have a significant impact on the environment and development of these regions. The freeze-thaw cycle, as a specific form of temperature change, can be understood as a special form of strong weathering, strongly influencing the physical and mechanical properties of the soil. For slopes in seasonally frozen soil regions, based on the characteristics of slope instability and the timing of failure, they can be broadly classified into three types: normal frost landslides, freeze-thaw landslides, and normal thaw landslides.

[0003] A search revealed that invention document CN11523611A discloses a test device and method for simulating freeze-thaw cycle slope erosion, including a test chamber, a slope simulation device, an environmental simulation device, a monitoring system, a soil and water collection device, and a data acquisition and control system. The test chamber is installed on a foundation, the slope simulation device is installed on the left side of the test chamber bottom plate, the refrigeration compressor of the environmental simulation device is located on the bottom plate below the test tank in the slope simulation device, and the vertical side-blowing air curtain of the environmental simulation device is installed on the right side of the test tank. The monitoring system is installed on the slope simulation device, and the monitoring system is connected to the data acquisition and control system via a USB cable. The data acquisition and control system is connected to the environmental simulation device via a cable. The soil and water collection device is installed on the bottom plate between the slope simulation device and the vertical side-blowing air curtain, and the residue collection bucket and weighing module of the soil and water collection device are stacked.

[0004] The aforementioned patent has the following defects: such as the lack of precipitation function, it is impossible to simulate the impact of rainfall on slope erosion, which affects the research on slope erosion mechanisms and protection measures under different precipitation forms. Therefore, a simulated freeze-thaw cycle slope erosion test device is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a simulated freeze-thaw cycle slope erosion test device, which has the advantages of simulating the impact of precipitation on slope erosion and solves the problem of not being able to simulate slope erosion under different precipitation patterns.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a simulated freeze-thaw cycle slope erosion test device, comprising a vertical side-blowing air curtain for slope erosion testing, wherein a water spraying device and an adjustment structure are provided above the vertical side-blowing air curtain;

[0007] The water spraying equipment includes a pump body, a spray pipe, a dual-shaft motor, and several nozzles fixedly connected to the outside of the spray pipe. A connecting shaft is fixedly installed on each of the two output shafts of the dual-shaft motor, and one of the connecting shafts is connected to the output end of the pump body. A mounting plate is provided on the back of the spray pipe.

[0008] The adjustment structure includes a rotating disk, a shaped abutment plate, an abutment wheel fixedly installed on the back of the mounting plate and rollingly connected to the outer surface of the shaped abutment plate, a horizontal plate welded to the top of the shaped abutment plate, and a convex shaft fixedly installed on the front of the rotating disk and extending into the interior of the horizontal plate. The other end of the connecting shaft away from the dual-axis motor is fixed to the back of the rotating disk.

[0009] Furthermore, the upper surface of the vertical side-blowing air curtain is bolted with a mounting bracket, and a mounting platform is welded to the back of the mounting bracket. The pump body and the dual-shaft motor are both bolted to the upper surface of the mounting platform.

[0010] Furthermore, L-shaped frames are fixedly installed on both the left and right sides of the mounting bracket, and the mounting plate is elastically hinged between the two L-shaped frames.

[0011] Furthermore, both the output and input ends of the pump body are fixedly equipped with water supply pipes, and a connecting pipe is fixedly connected between the water supply pipe on the output end and the spray pipe.

[0012] Furthermore, the interior of the horizontal plate has a sliding opening that connects the front and rear sides, and the convex shaft extends into the interior of the sliding opening and is tumbledly connected to its inner wall.

[0013] Furthermore, the irregularly shaped abutment plate is provided with two opposing arc-shaped concave and convex surfaces, the abutment wheel is respectively rolledly connected to the two arc-shaped concave and convex surfaces, and the connecting shaft connected to the rotating disk is connected to the mounting bracket bearing.

[0014] Furthermore, a slider is fixedly installed on the back of the irregularly shaped abutment plate, and a sliding groove adapted to the slider is opened inside the mounting frame. A guide rail for guiding the rotating disk is provided on the side of the mounting frame near the rotating disk, and a guide rod that is slidably connected to the guide rail is fixedly installed on the back of the rotating disk.

[0015] Compared with the prior art, this utility model provides a test device for simulating freeze-thaw cycle slope erosion, which has the following beneficial effects:

[0016] 1. This simulated freeze-thaw cycle slope erosion test device uses a vertical side-blowing air curtain to blow water mist onto the slope, which can more realistically simulate the slope erosion process in the natural environment. The addition of water mist increases the humidity of the slope surface, thereby accelerating the water migration and phase change process during the freeze-thaw cycle, thus affecting the erosion rate and pattern of the slope. It has the advantage of being able to simulate the impact of precipitation on slope erosion and effectively solves the problem of not being able to simulate slope erosion under different precipitation forms.

[0017] 2. This simulated freeze-thaw cycle slope erosion test device drives a rotating disk to rotate via the other output shaft of a dual-axis motor. The rotating disk rotates and moves along the sliding port via a convex shaft, causing the irregularly shaped contact plate to move up and down. At this time, the contact wheel rolls on the uneven arc surface. Since the two ends of the nozzle can rotate, it flips back and forth under the rolling cooperation of the contact wheel and the irregularly shaped contact plate, thereby adjusting the water spray range and increasing the precipitation range. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural view of the sprinkler equipment and adjustment structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the rotating disk of this utility model.

[0021] In the diagram: 1. Vertical side-blowing air curtain; 2. Mounting frame; 3. Sprinkler equipment; 301. Pump body; 302. Water supply pipe; 303. Spray pipe; 304. Nozzle; 305. Connecting pipe; 306. Dual-shaft motor; 307. Connecting shaft; 308. Mounting plate; 4. Adjustment structure; 401. Rotating disc; 402. Irregular abutment plate; 403. L-shaped frame; 404. Abutment wheel; 405. Horizontal plate; 406. Convex shaft; 407. Guide rail; 408. Guide rod; 409. Slide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 3A simulated freeze-thaw cycle slope erosion test device includes a vertical side-blowing air curtain 1 for slope erosion testing. A water spraying device 3 and an adjustment structure 4 are installed above the vertical side-blowing air curtain 1. The water spraying device 3 includes a pump body 301, a nozzle 303, a dual-axis motor 306, and several nozzles 304 fixedly connected to the outside of the nozzle 303. Connecting shafts 307 are fixedly installed on both output shafts of the dual-axis motor 306, and one of the connecting shafts 307 is connected to the output end of the pump body 301. A mounting plate 308 is provided on the back of the nozzle 303. By blowing water mist through the vertical side-blowing air curtain 1 onto the slope, the slope erosion process in the natural environment can be simulated more realistically. The addition of water mist increases the humidity of the slope surface, thereby accelerating water migration and phase change processes during the freeze-thaw cycle, thus affecting the erosion rate and pattern of the slope.

[0024] Specifically, a mounting bracket 2 is bolted to the upper surface of the vertical side-blowing air curtain 1, and a mounting platform is welded to the back of the mounting bracket 2. The pump body 301 and the dual-axis motor 306 are both bolted to the upper surface of the mounting platform. Water pipes 302 are fixedly installed at both the output and input ends of the pump body 301, and a connecting pipe 305 is fixedly connected between the water pipe 302 at the output end and the spray pipe 303.

[0025] In this embodiment, the adjustment structure 4 includes a rotating disk 401, a shaped abutment plate 402, an abutment wheel 404 fixedly installed on the back of the mounting plate 308 and rollingly connected to the outer surface of the shaped abutment plate 402, a horizontal plate 405 welded to the top of the shaped abutment plate 402, and a convex shaft 406 fixedly installed on the front of the rotating disk 401 and extending into the interior of the horizontal plate 405. Another connecting shaft 307, with one end away from the dual-axis motor 306, is fixed to the back of the rotating disk 401. L-shaped frames 403 are fixedly installed on both the left and right sides of the mounting bracket 2, and the mounting plate 308 is elastically hinged between the two L-shaped frames 403.

[0026] Specifically, the horizontal plate 405 has a sliding opening with front and rear sides connected. The convex shaft 406 extends into the sliding opening and rolls with its inner wall. A slider is fixedly installed on the back of the irregular abutment plate 402. The mounting frame 2 has a sliding groove 409 adapted to the slider. A guide rail 407 guiding the rotating disk 401 is provided on the side of the mounting frame 2 near the rotating disk 401. A guide rod 408 slidably connected to the guide rail 407 is fixedly installed on the back of the rotating disk 401. The rotating disk 401 is rotated by the other output shaft of the dual-axis motor 306. The rotation of the rotating disk 401 causes the irregular abutment plate 402 to move up and down through the sliding movement of the convex shaft 406 in the sliding opening. At this time, the abutment wheel 404 rolls on the uneven arc surface. Since the two ends of the spray pipe 303 can rotate, it flips back and forth under the rolling cooperation of the abutment wheel 404 and the irregular abutment plate 402, thereby adjusting the water spray range and increasing the precipitation range.

[0027] The guide rail 407 is circular and has an annular guide groove inside. There are two guide rods 408 arranged symmetrically. The two guide rods 408 slide in the guide groove to ensure the stable rotation of the rotating disk 401.

[0028] It should be noted that the irregular abutment plate 402 is provided with two opposing arc-shaped concave and convex surfaces, and the abutment wheel 404 is rolledly connected to the two arc-shaped concave and convex surfaces respectively. The connecting shaft 307 connected to the rotating disk 401 is connected to the bearing of the mounting bracket 2.

[0029] The working principle of the above embodiments is as follows:

[0030] In use, the mounting bracket 2 is fixed above the vertical side-blowing air curtain 1, and the vertical side-blowing air curtain 1 is activated. The vertical side-blowing air curtain 1 simulates natural temperature and humidity conditions and realizes freeze-thaw cycles. At the same time, the water spraying equipment 3 uses the wind power of the vertical side-blowing air curtain 1 to blow water mist onto the slope. This can not only simulate the process of rainfall or snowfall under natural conditions, but also study the impact of water mist on slope erosion. In addition, the other output shaft of the dual-axis motor 306 drives the rotating disk 401 to rotate. The rotation of the rotating disk 401 drives the sliding movement of the convex shaft 406 on the sliding port, which drives the irregular abutment plate 402 to move up and down. At this time, the abutment wheel 404 rolls on the uneven arc surface. Since the two ends of the nozzle 303 can rotate, the abutment wheel 404 and the irregular abutment plate 402 roll back and forth under the rolling cooperation, thereby adjusting the water spray range and increasing the precipitation range.

[0031] The installation method, connection method, or setting method disclosed in this embodiment are all common mechanical connections.

[0032] Any connection method that can achieve its beneficial effect can be implemented. In addition, all electrical components in this embodiment are electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing public power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A simulated freeze-thaw cycle slope erosion test device, comprising a vertical side-blowing air curtain (1) for slope erosion testing, characterized in that: A water spraying device (3) and an adjustment structure (4) are provided above the vertical side-blowing air curtain (1). The water spraying equipment (3) includes a pump body (301), a spray pipe (303), a dual-shaft motor (306), and a number of nozzles (304) fixedly connected to the outside of the spray pipe (303). A connecting shaft (307) is fixedly installed on both output shafts of the dual-shaft motor (306), and one of the connecting shafts (307) is connected to the output end of the pump body (301). A mounting plate (308) is provided on the back of the spray pipe (303). The adjustment structure (4) includes a rotating disk (401), a shaped abutment plate (402), an abutment wheel (404) fixedly installed on the back of the mounting plate (308) and rollingly connected to the outer surface of the shaped abutment plate (402), a horizontal plate (405) welded to the top of the shaped abutment plate (402), and a convex shaft (406) fixedly installed on the front of the rotating disk (401) and extending into the interior of the horizontal plate (405). Another connecting shaft (307) is fixed to the back of the rotating disk (401) at one end away from the dual-axis motor (306).

2. The simulated freeze-thaw cycle slope erosion test device according to claim 1, characterized in that: The upper surface of the vertical side-blowing air curtain (1) is bolted with a mounting bracket (2), and a mounting platform is welded to the back of the mounting bracket (2). The pump body (301) and the dual-shaft motor (306) are both bolted to the upper surface of the mounting platform.

3. The simulated freeze-thaw cycle slope erosion test device according to claim 2, characterized in that: The mounting bracket (2) has L-shaped brackets (403) fixedly installed on both the left and right sides, and the mounting plate (308) is elastically hinged between the two L-shaped brackets (403).

4. The simulated freeze-thaw cycle slope erosion test device according to claim 1, characterized in that: The pump body (301) has water pipes (302) fixedly installed at both the output end and the input end, and a connecting pipe (305) is fixedly connected between the water pipe (302) at the output end and the nozzle (303).

5. The simulated freeze-thaw cycle slope erosion test device according to claim 1, characterized in that: The interior of the horizontal plate (405) has a sliding opening that connects the front and rear sides, and the convex shaft (406) extends into the interior of the sliding opening and is in rolling connection with its inner wall.

6. The simulated freeze-thaw cycle slope erosion test device according to claim 2, characterized in that: The irregular abutment plate (402) is provided with two opposing arc-shaped concave and convex surfaces. The abutment wheel (404) is rolledly connected to the two arc-shaped concave and convex surfaces respectively. The connecting shaft (307) connected to the rotating disk (401) is connected to the bearing of the mounting frame (2).

7. The simulated freeze-thaw cycle slope erosion test device according to claim 6, characterized in that: A slider is fixedly installed on the back of the irregular abutment plate (402). The mounting frame (2) has a sliding groove (409) adapted to the slider inside. A guide rail (407) for guiding the rotating disk (401) is provided on the side of the mounting frame (2) near the rotating disk (401). A guide rod (408) that is slidably connected to the guide rail (407) is fixedly installed on the back of the rotating disk (401).

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