Tailing pond dust suppressant effect evaluation device

Abstract

The utility model provides a tailing pond dust suppressant effect evaluation device. The device comprises an air supply assembly; the air supply assembly is arranged on one side of the experiment wind tunnel; the terrain simulation assembly is arranged in the experiment wind tunnel and is used for storing a sample; the dust suppressant applying assembly is arranged on the experimental wind tunnel and is used for uniformly applying a medicament to a sample; a data acquisition assembly; the wind erosion experiment device has the beneficial effects that the wind erosion experiment can be performed on the tailing pond beach face simulated by different dust suppressants, different landform structures can be effectively simulated, the diversity and scientificity of the experiment are greatly improved, and the influence of the dust suppressants on the permeability coefficient can be evaluated.

Description

Technical Field

[0001] This application belongs to the field of tailings treatment technology, specifically relating to a device for evaluating the effect of dust suppressants in tailings ponds. Background Technology

[0002] The topography of tailings dam surfaces is often a key factor affecting dust suppression effectiveness. Furthermore, the wetting, binding, and solidification processes of dust suppressants on the tailings surface can form a hard crust of a certain thickness, leading to a decrease in permeability and consequently impacting the stability of the tailings dam and seepage flow. To address the challenges of evaluating the impact of tailings dam surface topography on dust suppressants and permeability coefficients in laboratory studies, a tailings dam dust suppressant performance and safety evaluation device was specifically designed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] To address the aforementioned problems, this application provides a tailings dam dust suppressant effect evaluation device, comprising:

[0005] Air supply components;

[0006] An experimental wind tunnel, wherein the air supply assembly is disposed on one side of the experimental wind tunnel;

[0007] A terrain simulation component, which is installed inside the experimental wind tunnel, is used to store samples;

[0008] A dust suppressant application component is disposed on the experimental wind tunnel and is used to uniformly apply the agent to the sample;

[0009] The data acquisition component includes a wind speed sensor, a dust concentration sensor, and a first weight collector. The wind speed sensor is mounted on the experimental wind tunnel and located between the air supply component and the terrain simulation component. The dust concentration sensor is mounted on the experimental wind tunnel and located on the side of the terrain simulation component away from the wind speed sensor. The first weight collector is located at the bottom of the terrain simulation component and is used to collect and measure the sample weight before and after the air supply component outputs.

[0010] A control terminal that analyzes and processes the data collected by the data acquisition component.

[0011] Optionally, the terrain simulation component includes a sample container and an assembly baffle. The sample container is disposed inside the experimental wind tunnel, and the assembly baffle is disposed on the sample container. The assembly baffle includes flat type, slope type, and hill type.

[0012] Optionally, the dust suppressant application component includes:

[0013] A water storage device is installed on the experimental wind tunnel;

[0014] A liquid distributor is installed inside the experimental wind tunnel and above the terrain simulation component, and the liquid distributor is connected to the water storage device.

[0015] Optionally, the data acquisition component further includes a liquid level sensor, which is disposed inside the water storage tank.

[0016] Optionally, the air supply assembly includes:

[0017] A fan is provided, and a tapered duct and a flexible duct are sequentially arranged between the fan and the experimental wind tunnel.

[0018] A frequency converter is installed on the fan.

[0019] Optionally, it also includes a dust treatment component, the dust treatment component comprising:

[0020] The filter is connected to the second end of the experimental wind tunnel via an air duct and a closing air duct.

[0021] Optionally, the sample container is provided with a drain hole, a pressure measuring hole and a water outlet from top to bottom.

[0022] Optionally, the number of pressure measuring holes may be multiple.

[0023] Optionally, a metering cylinder is provided on one side of the water outlet.

[0024] Optionally, the data acquisition component further includes a pressure sensor and a second weight sensor. Each pressure sensor is provided on each pressure port, and the second weight sensor is used to measure the weight of the measuring cylinder.

[0025] Beneficial effects

[0026] The tailings dam dust suppressant effect evaluation device provided in the embodiments of this utility model can realize wind erosion experiments on the simulated tailings dam beach surface with different dust suppressants, effectively simulate different landform structures, greatly improve the diversity and scientific nature of the experiment, and also evaluate the influence of dust suppressants on the permeability coefficient. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the present invention;

[0028] Figure 2 This is a structural diagram of the terrain simulation component of this utility model;

[0029] Figure 3This is a structural diagram of the assembly baffle of this utility model.

[0030] The reference numerals in the attached figures are as follows:

[0031] 1. Air supply assembly; 11. Fan; 12. Gradient duct; 13. Flexible duct; 14. Frequency converter; 2. Experimental wind tunnel; 3. Terrain simulation assembly; 31. Sample container; 32. Assembly baffle; 321. Flat type; 322. Sloping type; 323. Hill type; 33. Drain hole; 34. Pressure measuring hole; 35. Water outlet; 4. Dust suppressant application assembly; 41. Water reservoir; 42. Liquid distributor; 5. Data acquisition assembly; 51. Wind speed sensor; 52. Dust concentration sensor; 53. First weight acquisition device; 54. Liquid level sensor; 55. Pressure sensor; 56. Second weight sensor; 6. Dust treatment assembly; 61. Filter; 62. Air duct; 63. Closing duct; 7. Measuring cylinder. Detailed Implementation

[0032] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] See also Figure 1-3 As shown, according to an embodiment of this application, a tailings dam dust suppressant effect evaluation device is provided, comprising:

[0037] Air supply component 1;

[0038] Experimental wind tunnel 2, wherein the air supply assembly 1 is disposed on one side of the experimental wind tunnel 2;

[0039] Terrain simulation component 3, which is installed inside the experimental wind tunnel 2, is used to store samples;

[0040] Dust suppressant application component 4 is disposed on the experimental wind tunnel 2 and is used to uniformly apply the agent to the sample.

[0041] The data acquisition component 5 includes a wind speed sensor 51, a dust concentration sensor 52, and a first weight collector 53. The wind speed sensor 51 is installed on the experimental wind tunnel 2 and located between the air supply component 1 and the terrain simulation component 3. The dust concentration sensor 52 is installed on the experimental wind tunnel 2 and located on the side of the terrain simulation component 3 away from the wind speed sensor 51. The first weight collector 53 is installed at the bottom of the terrain simulation component 3 and is used to collect and measure the sample weight before and after the air supply component 1 outputs.

[0042] The control terminal analyzes and processes the data collected by the data acquisition component 5.

[0043] Specifically, the air supply component 1 is located on one side of the experimental wind tunnel 22. Serving as a power source, it generates airflow of varying intensities to simulate different wind speeds in nature, ensuring smooth entry into the experimental wind tunnel 2. The internal space of the experimental wind tunnel 2 exhibits excellent airflow stability and uniformity. The experimental wind tunnel 2 ensures sufficient space to accommodate the terrain simulation component 3 and other experimental equipment, while maintaining smooth airflow within the tunnel. The inner walls of the wind tunnel are made of a smooth material to reduce friction between the airflow and the wall surface, minimizing turbulence and thus ensuring the reliability of experimental data.

[0044] The terrain simulation component 3 is located inside the experimental wind tunnel 2. Its main function is to store samples and simulate different terrain conditions, allowing for the replacement of different terrain modules according to experimental needs. Samples stored on the terrain simulation component 3 can realistically experience the effects of simulated wind.

[0045] The dust suppressant application component 4 is installed on the experimental wind tunnel 2, and its function is to uniformly apply the agent to the sample. Different types of dust suppressants are used, selected according to experimental needs. A first weight collector 53 is installed at the bottom of the terrain simulation component 3. After the sprayed dust suppressant dries and passes through the air supply component 1, the first weight collector 53 can accurately collect and measure the weight of the sample. By comparing the weight changes, the erosion or deposition of the sample under wind and sand action can be analyzed.

[0046] The data acquisition component 5 is used for real-time monitoring and acquisition of experimental data. The data acquisition component 5 includes a wind speed sensor 51, a dust concentration sensor 52, and a first weight acquisition unit 53. The wind speed sensor 51 is installed on the experimental wind tunnel 2, located between the air supply component 1 and the terrain simulation component 3. It can measure the wind speed entering the experimental wind tunnel 2 in real time and transmit the data to the control terminal. The wind speed sensor 51 employs high-precision measurement technology to ensure the accuracy and stability of the measurement data, providing reliable wind speed data for subsequent data analysis.

[0047] Dust concentration sensor 52 is mounted on the experimental wind tunnel 2 and located on the side of the terrain simulation component 3 away from the wind speed sensor 51. It is primarily used to detect the dust concentration in the airflow after passing through the sample area, thereby assessing the degree of wind and sand erosion and the effectiveness of dust suppressants. Dust concentration sensor 52 can quickly respond to changes in dust concentration and provide real-time data feedback, helping researchers understand the dust dynamics during the experiment.

[0048] The first weight acquisition device 53 is located at the bottom of the terrain simulation component 3 and is used to collect and measure the sample weight before and after the output of the wind supply component 1. By accurately measuring the change in sample weight, researchers can quantify and analyze the erosion of the sample by wind and sand after the dust suppressant is sprayed, providing important data support for studying the laws of wind and sand movement and the dust suppression effect.

[0049] In the actual experiment, the terrain simulation component 3 was assembled, and the sample was placed inside. An appropriate amount of dust suppressant was evenly sprayed onto the sample using the dust suppressant application component 4. After the dust suppressant had fully acted, the wind supply component 1 was adjusted to the required wind speed to simulate different wind conditions blowing the sample. During the experiment, the wind speed sensor 51, dust concentration sensor 52, and first weight acquisition device 53 collected data in real time and transmitted it to the control terminal for analysis and processing. Through comprehensive analysis of this data, researchers can conduct in-depth research on the effectiveness of dust suppressants under different wind conditions and their impact on the tailings dam surface, providing a scientific basis for practical wind and sand control work.

[0050] The terrain simulation component 3 includes a sample container 31 and an assembly baffle 32. The sample container 31 is disposed inside the experimental wind tunnel 2, and the assembly baffle 32 is disposed on the sample container 31. The assembly baffle 32 includes a flat type 321, a slope type 322, and a hill type 323.

[0051] Specifically, the terrain simulation component 3 includes a sample container 31 and an assembly baffle 32. The sample container 31, made of acrylic material, is placed inside the experimental wind tunnel 2. Its dimensions ensure both full utilization of the wind tunnel 2's space and stable sample support. The assembly baffle 32 is installed on the sample container 31 and includes three types: flat type 321, sloping type 322, and hill type 323. The assembly baffle 32 is detachably installed on the sample container 31 using snap-fit ​​methods, ensuring seamless connections and preventing airflow leakage from affecting experimental results. The use of the flat type 321 baffle, sloping type baffle, and hill type 323 baffle effectively simulates different terrain structures, greatly improving the diversity and scientific rigor of the experiment.

[0052] During the experiment, researchers can flexibly select suitable assembly baffles 32 to install on the sample container 31 according to the experimental purpose, thereby quickly constructing the required terrain simulation environment, providing a wealth of experimental conditions for wind and sand simulation experiments, and greatly improving the diversity and scientific nature of the experiment.

[0053] The dust suppressant application component 4 includes:

[0054] Water storage device 41, wherein the water storage device 41 is installed on the experimental wind tunnel 2;

[0055] Liquid distributor 42 is installed inside the experimental wind tunnel 2 and located above the terrain simulation component 3. Liquid distributor 42 is connected to the water storage device 41.

[0056] Specifically, the dust suppressant application component 4 consists of a water reservoir 41 and a liquid distributor 42. The water reservoir 41 is installed on the experimental wind tunnel 2 and is made of high-strength, corrosion-resistant materials, such as special engineering plastics or stainless steel, to ensure the safe storage of different types of water or dust suppressant solutions during long-term experiments without leakage or corrosion damage, thus meeting the reagent supply requirements for multiple experiments or long-term continuous experiments. At the same time, the water reservoir 41 is equipped with clear graduation markings, allowing experimenters to accurately monitor the remaining amount of dust suppressant solution for timely replenishment.

[0057] The liquid distributor 42 is installed inside the experimental wind tunnel 2, directly above the terrain simulation component 3. This positioning ensures that the dust suppressant sprayed by the liquid distributor 42 can evenly cover the sample in the sample container 31. The liquid distributor 42 is connected to the water reservoir 41 via a high-pressure resistant and corrosion-resistant pipe to ensure that there will be no leakage or blockage during the delivery of the dust suppressant solution.

[0058] The liquid distributor 42 has a flat box-like structure with multiple distribution channels and nozzles inside. Water or dust suppressant solution from the water tank 41 first enters the distribution channels of the liquid distributor 42, and then the solution is evenly distributed to each nozzle. The nozzles are special atomizing nozzles, whose spray angle and spray volume can be adjusted according to experimental requirements.

[0059] In actual operation, the experimenters first inject the required water or a pre-mixed dust suppressant solution into the water reservoir 41 according to the experimental requirements. Then, they activate the drive device (such as a small water pump) of the dust suppressant application component 4, which transports the water or dust suppressant solution from the water reservoir 41 to the liquid distributor 42 through pipelines. The distribution system inside the liquid distributor 42 evenly distributes the solution to each nozzle, ultimately spraying it uniformly onto the sample surface of the terrain simulation component 3 in a mist form. This method ensures uniform distribution of the dust suppressant on the sample surface during the experiment, thereby improving the accuracy and reliability of the experimental results and providing strong support for studying the effects of dust suppressants under different conditions.

[0060] The data acquisition component 5 also includes a liquid level sensor 54, which is disposed inside the water storage tank 41.

[0061] Specifically, the liquid level sensor 54 is installed inside the water reservoir 41, enabling real-time and accurate monitoring of the dust suppressant solution level in the reservoir 41. It converts the collected liquid level data into an electrical signal and transmits it to the data processing system. By analyzing the liquid level data, researchers can intuitively understand the consumption of the dust suppressant solution in the reservoir 41. Accurately determining the amount of water or dust suppressant consumed during the experiment allows the entire experimental setup to collect and provide feedback on various data points more comprehensively and accurately, facilitating in-depth research on wind and sand simulation and dust suppression effects.

[0062] The air supply assembly 1 includes:

[0063] A fan 11 is provided, and a tapered air duct 12 and a flexible air duct 13 are sequentially arranged between the fan 11 and the experimental wind tunnel 2.

[0064] Inverter 14, which is mounted on the fan 11.

[0065] Specifically, the air supply assembly 1 includes a fan 11, a tapered duct 12, a flexible duct 13, and a frequency converter 14. The fan 11, as the power source for generating airflow, is a high-performance, high-efficiency centrifugal or axial fan, possessing strong blowing capacity to provide a stable airflow supply to the experimental wind tunnel 2. The tapered duct 12 and the flexible duct 13 are sequentially arranged between the fan 11 and the experimental wind tunnel 2. The function of the tapered duct 12 is to pre-regulate the airflow output by the fan 11. Through its tapered structure, the airflow velocity gradually increases and the pressure gradually decreases during flow, thus making the airflow more stable and uniform. The tapered duct 12 is made of robust metal with a smooth inner wall to reduce frictional resistance of the airflow within the duct.

[0066] The flexible duct 13 connects the tapered duct 12 to the experimental wind tunnel 2, possessing excellent flexibility and sealing properties. The flexible duct 13 effectively buffers the vibration and noise generated by the fan 11 during operation, preventing interference with the experimental environment inside the wind tunnel 2. Simultaneously, its bendable nature facilitates installation and adjustment in different experimental sites and equipment layouts, enabling the air supply assembly 1 to better adapt to various experimental conditions. Its material is composite fiber.

[0067] The frequency converter 14 is installed on the fan 11. Through the frequency converter 14, the experimenter can flexibly adjust the speed of the fan 11 within a certain range according to the experimental requirements, thereby precisely controlling the wind speed of the output airflow. For example, when simulating a light wind environment, the speed of the fan 11 is reduced; while when simulating a strong wind environment, the speed of the fan 11 is increased.

[0068] During the experiment, the researchers first set the rotational speed of the fan 11 using the frequency converter 14 according to the required wind speed conditions. After starting the fan 11, the airflow passes through the tapered duct 12 and the flexible duct 13 in sequence, and finally enters the experimental wind tunnel 2 stably, providing the required wind conditions for the sandstorm simulation experiment and ensuring that the experiment can be carried out accurately under different wind speed environments.

[0069] It also includes a dust treatment component 6, which comprises:

[0070] The filter 61 is connected to the second end of the experimental wind tunnel 2 via the air guide 62 and the air inlet 63.

[0071] Specifically, the dust treatment component 6 includes a filter 61, an air duct 62, and a converging air duct 63. The filter 61 is connected to the second end of the experimental wind tunnel 2 via the air duct 62 and the converging air duct 63. The converging air duct 63 is installed at the second end of the experimental wind tunnel 2, and its converging shape effectively guides the dust-laden airflow flowing out of the experimental wind tunnel 2 into the air duct 62, improving airflow collection efficiency. The converging air duct 63 is made of a robust material with a smooth inner wall, reducing energy loss and dust adhesion in the airflow within the duct.

[0072] The air duct 62 connects the inlet duct 63 to the filter 61. It is made of wear-resistant and well-sealing material to ensure no leakage of dust-laden airflow during transport. The filter 61 is the core device of the dust treatment assembly 6, employing efficient filtration technologies such as bag filtration, electrostatic filtration, or cyclone separators to effectively remove dust particles from the airflow. The bag filter 61 intercepts dust using special filter bags. The filter bag material has good air permeability and filtration accuracy, and a suitable filter bag can be selected based on the properties and particle size of the dust in the experiment. The electrostatic filter 61 utilizes the principle of electrostatic adsorption, causing dust particles to become charged and adsorbed onto the dust collection plate, achieving efficient dust removal. The cyclone separator uses high-speed rotating airflow to separate dust from the airflow under centrifugal force, causing it to settle to the bottom of the separator.

[0073] During the experiment, the dust-laden airflow passing through the sample area in the experimental wind tunnel 2, under the negative pressure generated by the fan 11, sequentially enters the filter 61 through the inlet duct 63 and the guide duct 62. The filter 61 filters the dust in the airflow, and the purified airflow can be directly discharged into the atmosphere or recycled, avoiding dust pollution of the experimental environment and the surrounding atmosphere. It also ensures that the experimental data is not affected by external dust, providing a strong guarantee for the smooth progress of the wind and sand simulation experiment.

[0074] The sample container 31 has a drain hole 33, a pressure measuring hole 34 and a water outlet hole 35 arranged sequentially from top to bottom.

[0075] The number of pressure measuring holes 34 is multiple.

[0076] A metering cylinder 7 is provided on one side of the water outlet 35.

[0077] The data acquisition component 5 also includes a pressure sensor 55 and a second weight sensor 56. Each pressure measuring hole 34 is provided with a pressure sensor 55, and the second weight sensor 56 is used to measure the weight of the measuring cylinder 7.

[0078] Specifically, to study the permeability of the dust suppressant to the sample, this device also includes a drain hole 33, a pressure measuring hole 34, and a water outlet 35 arranged sequentially from top to bottom in the sample container 31. Multiple pressure measuring holes 34 are distributed at intervals along the side of the sample container 31 from top to bottom. The pressure measuring holes 34, in conjunction with the pressure sensor 55 mounted on them, can monitor pressure changes at different depths within the sample container 31 in real time. The water outlet 35 is located on the bottom side of the sample container 31, corresponding to the measuring cylinder 7. The measuring cylinder 7 collects and measures the outflowing liquid. A second weight sensor 56 measures the weight of the measuring cylinder 7 in real time. By converting weight to liquid density, the volume of the outflowing liquid can be accurately calculated, providing accurate data support for experimental data analysis.

[0079] Wind erosion rate experiment: used to study the effects of different dust suppressants on the wind erosion rate of the simulated beach surface of the tailings dam under the same wind conditions.

[0080] Example 1

[0081] Step 1: After placing the tailings sample from the tailings dam into the terrain simulation component 3, place it into the experimental wind tunnel 2. Spray the dust suppressant solution of brand A onto the sample of the terrain simulation component 3 through the dust suppressant application component 4. Let it stand for a sufficient period of time. At this time, the first weight acquisition device 53 collects the total weight of the terrain simulation component 3 and transmits the collected data to the control terminal.

[0082] Step 2: Set the input wind speed of the air supply component 1 to 8m / s, start the air supply component 1, and after running for 30 minutes, the first weight acquisition device 53 will collect the total weight of the terrain simulation component 3 and transmit the collected data to the control terminal.

[0083] Step 3: After replacing the dust suppressant solution of brand A with the dust suppressant solution of brand B, repeat steps 1-2 above.

[0084] Step 4: The control terminal records the total weight of the terrain simulation component 3 after being treated with dust suppressant solutions of brand A and brand B, respectively, and then obtains the weight of the wind erosion sample and calculates the wind erosion rate, so as to obtain the wind erosion resistance performance of different brands of dust suppressant solutions.

[0085] Example 2

[0086] Step 1: Place the tailings sample from the tailings dam into the terrain simulation component 3, and then place it into the experimental wind tunnel 2. Spray the dust suppressant solution of brand C onto the sample of the terrain simulation component 3 through the dust suppressant application component 4. Let it stand for a while to fully take effect. At this time, the first weight acquisition device 53 collects the total weight of the terrain simulation component 3 and transmits the collected data to the control terminal.

[0087] Step 2: Set the input wind speed of the air supply component 1 to 6 m / s, start the air supply component 1, and stop the air supply component 1 after running for 15 minutes, 30 minutes, 45 minutes and 60 minutes respectively. At each time point, the total weight of the terrain simulation component 3 is collected by the first weight acquisition device 53, and the collected data is transmitted to the control terminal.

[0088] Step 3: The control terminal records the total weight of the terrain simulation component 3 before and after wind erosion at different time points, calculates the wind erosion rate, plots the wind erosion rate change curve over time, and analyzes the influence of wind duration on the wind erosion rate.

[0089] Example 3

[0090] Step 1: Place the tailings sample from the tailings dam into the three-section sloping baffle assembly 32 terrain simulation component 3, and place it into the experimental wind tunnel 2. Spray the first, second, and third groups of terrain simulation components 3 with the dust suppressant solution of brand D at 2%, 3%, and 4% of the sample amount through the dust suppressant application component, respectively. Let it stand for a sufficient period of time. At this time, the first weight collector 53 collects the total weight of each group of terrain simulation components 3 and transmits the collected data to the control terminal.

[0091] Step 2: Set the input wind speed of the air supply component 1 to 5m / s, 7m / s, and 9m / s, start the air supply component 1, and stop the air supply component 1 after running for 25 minutes for the first, second, and third groups of terrain simulation components 3 respectively. Collect the total weight of the first, second, and third groups of terrain simulation components 3 after wind erosion by the first weight and transmit it to the control terminal.

[0092] Step 3: The control terminal records the total weight of the terrain simulation component 3 before and after wind erosion, calculates the wind erosion rate, and analyzes the interaction between the amount of dust suppressant applied and the wind intensity on the wind erosion rate.

[0093] Permeability coefficient experiment

[0094] Example 1

[0095] Step 1: Place the tailings sample from the tailings dam into the terrain simulation component 3 of the flat type 321 assembly baffle 32, and then place it into the experimental wind tunnel 2.

[0096] Step 2: Slowly supply water to the sample through the dust suppressant application component 4, keep the water head height stable at the drain hole 33, measure the amount of water seeping through the water outlet hole 35 within a certain time (5 minutes) in the initial state, and record it as Q1. At the same time, record the water head height (h1, h2, h3) of each pressure measuring hole 34.

[0097] Step 3: Next, spray the dust suppressant solution of brand F onto the sample of terrain simulation component 3 through dust suppressant application component 4, and wait 30 minutes for it to fully take effect;

[0098] Step 4: Perform the measurement again according to Step 2 to obtain the infiltration volume Q2 and water level difference h2 after using the dust suppressant;

[0099] Step 5: According to Darcy's Law (Where K is the permeability coefficient, Q is the seepage flow rate, A is the cross-sectional area of ​​the water passage, Δh is the head difference (the average of h1-h2 and h2-h3 is taken), and L is the distance between each pressure measuring hole). Calculate the permeability coefficients K1 and K2 before and after using the dust suppressant, and compare and analyze the influence of the dust suppressant on the permeability coefficient of the tailings.

[0100] Example 2

[0101] Step 1: After placing the tailings sample from the tailings dam into the three sets of terrain simulation components 3, place them into the experimental wind tunnel 2. Spray the first, second, and third sets of terrain simulation components 3 with dust suppressant solution of brand G at a concentration of 2%, 3%, and 4% respectively through the dust suppressant application component 4, and let them stand for sufficient action.

[0102] Step 2: Slowly supply water to the sample through the dust suppressant application component 4, keeping the water head height at the drain hole 33, and measure the seepage volume and water level difference of each group of tailings within a certain time (e.g., 3 minutes);

[0103] Step 3: Calculate the permeability coefficient of tailings treated with different concentrations of dust suppressant.

[0104] Record the seepage volume, water level difference, and calculated permeability coefficient corresponding to different concentrations of dust suppressant. Plot the relationship curve between permeability coefficient and dust suppressant concentration to analyze the influence of concentration on permeability coefficient.

[0105] Example 3

[0106] Step 1: Place the tailings samples from the tailings pond into the terrain simulation component 3 of the hill type 323 and the terrain simulation component 3 of the flat type 321 respectively, and place them into the experimental wind tunnel 2. Spray the samples in the terrain simulation component 3 of the hill type 323 and the terrain simulation component 3 of the flat type 321 with the dust suppressant by the dust suppressant application component 4.

[0107] Step 2: Slowly supply water to the sample through the dust suppressant application component 4. For the hill-type terrain simulation component 323, keep the water head height at the drain hole 33 and measure the seepage volume and water level difference within a certain time (e.g., 4 minutes). For the flat terrain simulation component 3, keep the water head height at the drain hole 33 and measure the seepage volume and water level difference within the same time.

[0108] Step 3: Calculate the permeability coefficient of the samples in the terrain simulation component 3 of hill type 323 and the terrain simulation component 3 of flat type 321 after applying dust suppressant.

[0109] Record experimental data under different terrain types, and compare and analyze the differences in permeability coefficients and their causes between the hill type 323 terrain simulation component 3 and the flat type 321 terrain simulation component 3 after the use of dust suppressant.

[0110] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A device for evaluating the effect of dust suppressants in tailings ponds, characterized in that, include: Air supply assembly (1); Experimental wind tunnel (2), wherein the air supply assembly (1) is disposed on one side of the experimental wind tunnel (2); A terrain simulation component (3) is installed inside the experimental wind tunnel (2) for storing samples; A dust suppressant application component (4) is provided on the experimental wind tunnel (2) for uniformly applying the agent to the sample. The data acquisition component (5) includes a wind speed sensor (51), a dust concentration sensor (52), and a first weight collector (53). The wind speed sensor (51) is installed on the experimental wind tunnel (2) and located between the air supply component (1) and the terrain simulation component (3). The dust concentration sensor (52) is installed on the experimental wind tunnel (2) and located on the side of the terrain simulation component (3) away from the wind speed sensor (51). The first weight collector (53) is installed at the bottom of the terrain simulation component (3) and is used to collect and measure the sample weight before and after the output of the air supply component (1). The control terminal analyzes and processes the data collected by the data acquisition component (5).

2. The tailings dam dust suppressant effect evaluation device according to claim 1, characterized in that, The terrain simulation component (3) includes a sample container (31) and an assembly baffle (32). The sample container (31) is placed inside the experimental wind tunnel (2), and the assembly baffle (32) is placed on the sample container (31). The assembly baffle (32) includes flat type (321), slope type (322) and hill type (323).

3. The tailings dam dust suppressant effect evaluation device according to claim 2, characterized in that, The dust suppressant application component (4) includes: A water storage device (41) is installed on the experimental wind tunnel (2); Liquid distributor (42) is installed inside the experimental wind tunnel (2) and above the terrain simulation component (3). The liquid distributor (42) is connected to the water reservoir (41).

4. The tailings dam dust suppressant effect evaluation device according to claim 3, characterized in that, The data acquisition component (5) also includes a liquid level sensor (54), which is disposed inside the water storage tank (41).

5. The tailings dam dust suppressant effect evaluation device according to claim 1, characterized in that, The air supply assembly (1) includes: A fan (11) is provided between the fan (11) and the experimental wind tunnel (2), and a tapered air duct (12) and a flexible air duct (13) are arranged in sequence. A frequency converter (14) is mounted on the fan (11).

6. The tailings dam dust suppressant effect evaluation device according to claim 1, characterized in that, It also includes a dust treatment component (6), which comprises: The filter (61) is connected to the second end of the experimental wind tunnel (2) through the air duct (62) and the air inlet duct (63).

7. The tailings dam dust suppressant effect evaluation device according to claim 3, characterized in that, The sample container (31) is provided with a drain hole (33), a pressure measuring hole (34) and a water outlet hole (35) from top to bottom.

8. The tailings dam dust suppressant effect evaluation device according to claim 7, characterized in that, The number of pressure measuring holes (34) is multiple.

9. The tailings dam dust suppressant effect evaluation device according to claim 8, characterized in that, A metering cylinder (7) is provided on one side of the water outlet (35).

10. The tailings dam dust suppressant effect evaluation device according to claim 9, characterized in that, The data acquisition component (5) also includes a pressure sensor (55) and a second weight sensor (56). Each pressure measuring hole (34) is provided with a pressure sensor (55), and the second weight sensor (56) is used to measure the weight of the measuring cylinder (7).

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