Tailing pond dust suppressant effect evaluation device

Abstract

The invention 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 technical field of tailings treatment, and specifically relates to a device for evaluating the effect of a dust suppressant in a tailings pond. Background Art

[0002] The topography of the tailings pond beach is usually a key factor affecting the dust suppression effect. At the same time, the functions of the dust suppressant such as wetting, bonding, and solidification form a hard shell of a certain thickness on the surface of the tailings, which will cause the permeability coefficient to decrease, and then affect the stability of the tailings pond dam body and the seepage stability. In order to solve the problem of evaluating the research of the dust suppressant on the beach surface and the influence of the permeability coefficient in the laboratory stage, a device for evaluating the performance and safety of the dust suppressant in the tailings pond is specifically designed. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] To solve the above problems, this application provides a device for evaluating the effect of a dust suppressant in a tailings pond, including:

[0005] An air supply component;

[0006] An experimental wind tunnel, the air supply component is arranged on one side of the experimental wind tunnel;

[0007] A terrain simulation component, the terrain simulation component is arranged in the experimental wind tunnel and is used for storing samples;

[0008] A dust suppressant application component, the dust suppressant application component is arranged on the experimental wind tunnel and is used for evenly applying the agent to the samples;

[0009] A data acquisition component, the data acquisition component includes an air velocity sensor, a dust concentration sensor, and a first weight collector. The air velocity sensor is arranged on the experimental wind tunnel and is located between the air supply component and the terrain simulation component. The dust concentration sensor is arranged on the experimental wind tunnel and is located on the side of the terrain simulation component away from the air velocity sensor. The first weight collector is arranged at the bottom of the terrain simulation component and is used for collecting and measuring the weight of the samples before and after the output of the air supply component;

[0010] A control terminal, the control terminal 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 arranged in the experimental wind tunnel, and the assembly baffle is arranged on the sample container. The assembly baffle includes a flat type, a slope type, and a hill type.

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

[0013] A water storage device, which is arranged on the experimental wind tunnel;

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

[0015] Optionally, the data acquisition component further includes a liquid level sensor, which is arranged in the water storage device.

[0016] Optionally, the air supply component includes:

[0017] A fan, and a tapered air duct and a flexible air duct are sequentially arranged between the fan and the experimental wind tunnel;

[0018] A frequency converter, which is arranged on the fan.

[0019] Optionally, it further includes a dust treatment component, and the dust treatment component includes:

[0020] A filter, which is connected to the second end of the experimental wind tunnel through a guide air duct and a converging air duct.

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

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

[0023] Optionally, a measuring cylinder is arranged on one side of the water outlet hole.

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

[0025] Advantageous effects

[0026] In the embodiment of the present invention, a device for evaluating the effect of a tailings dam dust suppressant can realize wind erosion experiments on the simulated tailings dam surface with different dust suppressants, can effectively simulate different landform structures, greatly improves the diversity and scientific nature of the experiments, and can also evaluate the influence of the dust suppressant on the permeability coefficient. Description of the drawings

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

[0028] Figure 2 It is a structural diagram of the terrain simulation component of the present invention;

[0029] Figure 3Structural diagram of the assembled baffle for the present invention.

[0030] The reference signs are shown as follows:

[0031] 1. Air supply component; 11. Fan; 12. Reducing air duct; 13. Flexible air duct; 14. Frequency converter; 2. Experimental wind tunnel; 3. Terrain simulation component; 31. Sample container; 32. Assembled baffle; 321. Flat type; 322. Slope type; 323. Hill type; 33. Drainage hole; 34. Pressure measurement hole; 35. Water outlet hole; 4. Dust suppressant application component; 41. Water storage tank; 42. Liquid distributor; 5. Data acquisition component; 51. Wind speed sensor; 52. Dust concentration sensor; 53. First weight collector; 54. Liquid level sensor; 55. Pressure measurement sensor; 56. Second weight sensor; 6. Dust treatment component; 61. Filter; 62. Air duct; 63. Narrowing air duct; 7. Measuring cylinder. Detailed implementation manners

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

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0034] In the present application, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0036] Referring to Figures 1-3 As shown, according to an embodiment of the present application, a device for evaluating the effect of a tailings pond dust suppressant is provided, including:

[0037] An air supply component 1;

[0038] An experimental wind tunnel 2, and the air supply component 1 is arranged on one side of the experimental wind tunnel 2;

[0039] A terrain simulation component 3, which is arranged in the experimental wind tunnel 2 and is used for storing samples;

[0040] A dust suppressant application component 4, which is arranged on the experimental wind tunnel 2 and is used for evenly applying the agent to the samples;

[0041] A data acquisition component 5, which includes a wind speed sensor 51, a dust concentration sensor 52 and a first weight collector 53. The wind speed sensor 51 is arranged on the experimental wind tunnel 2 and is located between the air supply component 1 and the terrain simulation component 3. The dust concentration sensor 52 is arranged on the experimental wind tunnel 2 and is located on the side of the terrain simulation component 3 away from the wind speed sensor 51. The first weight collector 53 is arranged at the bottom of the terrain simulation component 3 and is used for collecting and measuring the weight of the samples before and after the output of the air supply component 1;

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

[0043] Specifically, the air supply component 1 is arranged on one side of the experimental wind tunnel 22. As a power source, the air supply component 1 can generate airflows of different intensities to simulate the wind conditions of different wind speeds in nature so that it can smoothly enter the experimental wind tunnel 2. The internal space of the experimental wind tunnel 2 has good airflow stability and uniformity. The experimental wind tunnel 2 ensures that there is enough space to accommodate the terrain simulation component 3 and other experimental equipment, and at the same time ensures the smoothness of the airflow in the wind tunnel. The inner wall of the wind tunnel is made of a smooth material to reduce the friction between the airflow and the wall surface and reduce the generation of airflow turbulence, thereby ensuring the reliability of the experimental data.

[0044] The terrain simulation component 3 is arranged in the experimental wind tunnel 2. Its main function is to store samples and simulate different terrain conditions, which is convenient for replacing different terrain modules according to experimental needs. The samples are stored on the terrain simulation component 3 and can truly feel the effect of the simulated wind.

[0045] The dust suppressant application component 4 is installed on the experimental wind tunnel 2, and its function is to evenly apply the agent to the sample. The agent is different types of dust suppressants, which are selected according to experimental needs. A first weight collector 53 is arranged at the bottom of the terrain simulation component 3. After the sprayed dust suppressant dries and before and after the air supply component 1 outputs, the first weight collector 53 can accurately collect and measure the weight of the sample, and by comparing the weight changes, analyze the erosion or accumulation of the sample under the action of sand and wind.

[0046] The data acquisition component 5 is used to monitor and collect experimental data in real time. 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 is 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 adopts high-precision measurement technology to ensure the accuracy and stability of the measurement data, providing reliable wind speed data for subsequent data analysis.

[0047] The dust concentration sensor 52 is installed on the experimental wind tunnel 2 and is located on the side of the terrain simulation component 3 away from the wind speed sensor 51. It is mainly used to detect the dust concentration in the airflow after passing through the sample area, so as to evaluate the erosion degree of sand and wind and the effect of the dust suppressant. The dust concentration sensor 52 can quickly respond to the change of dust concentration and feedback the data in real time, helping researchers to understand the dust dynamics in the experimental process in a timely manner.

[0048] The first weight collector 53 is arranged at the bottom of the terrain simulation component 3 and is used to collect and measure the weight of the sample before and after the output of the air supply component 1. By accurately measuring the change of the sample weight, researchers can quantitatively analyze the erosion amount of the sample sprayed with the dust suppressant under the action of sand and wind, providing important data support for studying the law of sand and wind movement and the dust suppression effect.

[0049] During the actual experimental process, the terrain simulation component 3 is assembled, and the sample is placed in the terrain simulation component 3. The dust suppressant application component 4 is used to evenly spray an appropriate amount of dust suppressant on the sample. Then, after it fully takes effect, the air supply component 1 is adjusted to the required wind speed to simulate different wind environments to blow the sample. During the experiment, the wind speed sensor 51, the dust concentration sensor 52, and the first weight collector 53 collect data in real time and transmit it to the control terminal for analysis and processing. Through the comprehensive analysis of these data, researchers can deeply study the effect of the dust suppressant under different wind conditions and its impact on the tailings pond surface, providing a scientific basis for actual sand and wind prevention 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 is placed inside the experimental wind tunnel 2 and is made of acrylic material. The size of the sample container 31 ensures that it can make full use of the space of the experimental wind tunnel 2 and can stably carry the sample. The assembly baffle 32 is installed on the sample container 31. The assembly baffle 32 includes three types: flat type 321, slope type 322, and hill type 323. The assembly baffle 32 is detachably installed on the sample container 31 by means of snap connection, etc., to ensure that there is no gap at the connection and prevent air leakage from affecting the experimental results. By setting the flat type 321 baffle, slope baffle, and hill type 323 baffle, different landform structures can be effectively simulated, greatly improving the diversity and scientific nature of the experiment.

[0052] During the experiment, researchers can flexibly select a suitable assembly baffle 32 to install on the sample container 31 according to the experimental purpose, so as to quickly construct the required terrain simulation environment, providing rich experimental condition options for the sand and dust simulation experiment and greatly improving the diversity and scientific nature of the experiment.

[0053] The dust suppressant application component 4 includes:

[0054] A water storage tank 41, which is disposed on the experimental wind tunnel 2;

[0055] A liquid distributor 42, which is disposed inside the experimental wind tunnel 2 and is located above the terrain simulation component 3. The liquid distributor 42 is connected to the water storage tank 41.

[0056] Specifically, the dust suppressant application component 4 is composed of a water storage tank 41 and a liquid distributor 42. The water storage tank 41 is disposed on the experimental wind tunnel 2 and is made of high-strength and corrosion-resistant materials, such as special engineering plastics or stainless steel, to ensure that different types of water or dust suppressant solutions can be safely stored during long-term experiments without leakage or corrosion damage, so as to meet the reagent supply for multiple experiments or long-term continuous experiments. At the same time, clear scale marks are equipped inside the water storage tank 41 to facilitate experimenters to accurately master the remaining amount of the dust suppressant solution inside and replenish it in time.

[0057] The liquid distributor 42 is installed inside the experimental wind tunnel 2 and is directly above the terrain simulation component 3. This setting can ensure that the dust suppressant sprayed by the liquid distributor 42 can evenly cover the samples in the sample container 31. The liquid distributor 42 is connected to the water storage tank 41 through high-pressure and corrosion-resistant pipes to ensure that there will be no leakage or blockage problems during the transportation of the dust suppressant solution.

[0058] The main structure of the liquid distributor 42 is a flat box body, with multiple diversion channels and nozzles installed inside. The water or dust suppressant solution transported from the water storage tank 41 first enters the diversion channels of the liquid distributor 42, and then the solution is evenly distributed to each nozzle. The nozzles adopt special atomizing nozzles, and their spray angles and spray amounts can be adjusted according to experimental requirements.

[0059] During the actual operation process, the experimenter first injects the required water or the dust suppressant prepared according to a certain ratio into the water storage tank 41 according to the experimental requirements. Then, start the driving device (such as a small water pump) of the dust suppressant application component 4 to transport the water or dust suppressant solution in the water storage tank 41 to the liquid distributor 42 through the pipeline. The diversion system inside the liquid distributor 42 evenly distributes the solution to each nozzle, and finally sprays it evenly on the surface of the samples on the terrain simulation component 3 in the form of mist. In this way, it can ensure that the dust suppressant on the surface of the samples in the experiment is evenly distributed, thereby improving the accuracy and reliability of the experimental results and providing a strong guarantee for studying the effects of dust suppressants under different conditions.

[0060] The data acquisition component 5 further includes a liquid level sensor 54, and the liquid level sensor 54 is arranged inside the water storage tank 41.

[0061] Specifically, the liquid level sensor 54 is arranged inside the water storage tank 41, and can monitor the liquid level height of the dust suppressant solution in the water storage tank 41 in real time and accurately. It converts the collected liquid level data into electrical signals and transmits them to the data processing system. By analyzing the liquid level data, the experimenter can intuitively understand the consumption situation of the dust suppressant solution in the water storage tank 41. The consumption of water or dust suppressant during the experiment can be accurately obtained, enabling the entire experimental device to collect and feedback various data in the experimental process more comprehensively and accurately, which helps to deeply study the sandstorm simulation and dust suppression effects.

[0062] The air supply component 1 includes:

[0063] A fan 11, 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] A frequency converter 14, and the frequency converter 14 is arranged on the fan 11.

[0065] Specifically, the air supply component 1 includes a fan 11, a tapered air duct 12, a flexible air duct 13, and a frequency converter 14. The fan 11, as the power source for generating air flow, selects a high-performance and high-efficiency centrifugal fan 11 or axial flow fan 11, which has a powerful air blowing ability and can provide a stable air flow supply for the experimental wind tunnel 2. The tapered air duct 12 and the flexible air duct 13 are sequentially arranged between the fan 11 and the experimental wind tunnel 2. The function of the tapered air duct 12 is to pre-adjust the air flow output by the fan 11. Through its tapered structure, the air flow speed gradually increases and the pressure gradually decreases during the flow process, making the air flow more stable and uniform. The tapered air duct 12 is made of a strong metal material with a smooth inner wall to reduce the frictional resistance of the air flow in the duct.

[0066] The flexible air duct 13 is connected between the tapered air duct 12 and the experimental wind tunnel 2. It has good flexibility and sealing performance. The flexible air duct 13 can effectively buffer the vibration and noise generated during the operation of the fan 11, avoiding interference with the experimental environment inside the experimental wind tunnel 2. At the same time, its bendable characteristic facilitates installation and adjustment in different experimental sites and equipment layouts, enabling the air supply component 1 to better adapt to various experimental conditions. It is made of composite fiber.

[0067] The frequency converter 14 is set on the fan 11. Through the frequency converter 14, experimenters can flexibly adjust the rotation speed of the fan 11 within a certain range according to experimental requirements, and then precisely control the wind speed of the output air flow. For example, when simulating a gentle breeze environment, the rotation speed of the fan 11 is reduced; while when simulating a strong wind environment, the rotation speed of the fan 11 is increased.

[0068] During the experiment, experimenters first set the rotation speed of the fan 11 through the frequency converter 14 according to the wind speed conditions required for the experiment. After starting the fan 11, the air flow passes through the tapered air duct 12 and the flexible air duct 13 in sequence, and finally stably enters the experimental wind tunnel 2, providing the required wind conditions for the sand and dust simulation experiment to ensure that the experiment can be accurately carried out in different wind speed environments.

[0069] It also includes a dust treatment component 6, and the dust treatment component 6 includes:

[0070] A filter 61, and the filter 61 is connected to the second end of the experimental wind tunnel 2 through a guide air duct 62 and a converging air duct 63.

[0071] Specifically, the dust treatment component 6 includes a filter 61, a duct 62, and a converging duct 63. The filter 61 is connected to the second end of the experimental wind tunnel 2 through the duct 62 and the converging duct 63. The converging duct 63 is installed at the second end of the experimental wind tunnel 2, and its converging shape can effectively guide the dust-containing air flow flowing out of the experimental wind tunnel 2 to concentrate and enter the duct 62, improving the air flow collection efficiency. The converging duct 63 is made of a strong and smooth inner wall material to reduce the energy loss of the air flow in the pipeline and the adhesion of dust.

[0072] The duct 62 serves to connect the converging duct 63 and the filter 61. Its material is selected to be wear-resistant and have good sealing performance to ensure that the dust-containing air flow does not leak during transportation. The filter 61 is the core equipment of the dust treatment component 6. It adopts efficient filtration technologies such as bag filtration, electrostatic filtration, or cyclone separation, and can effectively remove dust particles in the air flow. The bag filter 61 intercepts dust through special filter bags. The filter bag material has good air permeability and filtration accuracy, and appropriate filter bags can be selected according to the nature and particle size of the dust in the experiment. The electrostatic filter 61 uses the principle of electrostatic adsorption to make the dust particles charged and then adsorbed onto the dust collection plate to achieve efficient dust removal. The cyclone separator separates dust from the air flow under the action of centrifugal force by means of a high-speed rotating air flow, and the dust settles to the bottom of the separator.

[0073] During the experimental operation, the dust-containing air flow passing through the sample area in the experimental wind tunnel 2 enters the filter 61 successively through the converging duct 63 and the duct 62 under the negative pressure generated by the fan 11. The filter 61 filters the dust in the air flow, and the purified air flow can be directly discharged into the atmosphere or recycled, avoiding the pollution of the experimental environment and the surrounding atmosphere by dust, and at the same time ensuring that the experimental data is not interfered by external dust, providing a strong guarantee for the smooth progress of the sandstorm simulation experiment.

[0074] The sample container 31 is successively provided with a drain hole 33, a pressure measurement hole 34, and a water outlet hole 35 from top to bottom.

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

[0076] A measuring cylinder 7 is arranged on one side of the water outlet hole 35.

[0077] The data acquisition component 5 further includes a pressure measurement sensor 55 and a second weight sensor 56. A pressure measurement sensor 55 is arranged on each of the pressure measurement holes 34, 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, the device is also provided with a drainage hole 33, a pressure measuring hole 34, and a water outlet hole 35 in the sample container 31 from top to bottom. The number of pressure measuring holes 34 is multiple, and they are spaced apart from top to bottom on the side of the sample container 31. The pressure measuring hole 34 cooperates with the pressure measuring sensor 55 installed thereon to be able to monitor the pressure changes at different depths in the sample container 31 in real time. The water outlet hole 35 is provided on one side of the bottom of the sample container 31 and corresponds to the measuring cylinder 7. The measuring cylinder 7 collects and measures the flowing-out liquid. The second weight sensor 56 measures the weight of the measuring cylinder 7 in real time, and through the conversion of weight and liquid density, the volume of the flowing-out liquid can be accurately calculated, providing accurate data support for experimental data analysis.

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

[0080] Example 1

[0081] Step 1: After putting the tailings sand sample of the tailings pond into the terrain simulation component 3, put it into the experimental wind tunnel 2, and spray the dust suppressant solution of brand A onto the sample of the terrain simulation component 3 through the dust suppressant application component 4, and let it stand for sufficient time to take effect. At this time, the first weight collector 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 incoming wind speed of the air supply component 1 to 8 m / s, start the air supply component 1, and after running for thirty minutes, the first weight collector 53 collects the total weight of the terrain simulation component 3 and transmits 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 the above steps 1-2 again;

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

[0085] Example 2

[0086] Step 1: Put the tailings sand sample of the tailings pond into the terrain simulation component 3, put it into the experimental wind tunnel 2, and spray the dust suppressant solution of brand C onto the sample of the terrain simulation component 3 through the dust suppressant application component 4, and let it stand for sufficient time to take effect. At this time, the first weight collector 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 air supply speed of the air supply component 1 to 6 m / s. Start the air supply component 1. When it has run for 15 minutes, 30 minutes, 45 minutes, and 60 minutes respectively, stop the air supply component 1, and collect the total weight of the terrain simulation component 3 at each time point through the first weight collector 53, and transmit the collected data to the control terminal;

[0088] Step 3: The control terminal respectively 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 change curve of the wind erosion rate over time, and analyzes the influence of the wind duration on the wind erosion rate.

[0089] Example 3

[0090] Step 1: Put the tailings pond tail sand sample into the terrain simulation component 3 with three sets of sloping assembly baffles 32, and place it in the experimental wind tunnel 2. Spray the dust suppressant solution of brand D on the first group, second group, and third group of terrain simulation components 3 by the dust suppressant application component at 2%, 3%, and 4% of the sample amount respectively, and let it stand for sufficient time. At this time, the first weight collector 53 respectively 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 air supply speeds of the air supply component 1 to 5 m / s, 7 m / s, and 9 m / s. Start the air supply component 1. When it has run for 25 minutes corresponding to the first group, second group, and third group of terrain simulation components 3 respectively, stop the air supply component 1, and collect the total weights of the first group, second group, and third group of terrain simulation components 3 after wind erosion through the first weight collector, and transmit them to the control terminal;

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

[0093] Permeability coefficient experiment

[0094] Example 1

[0095] Step 1: Put the tailings pond tail sand sample into the terrain simulation component 3 with a flat type 321 assembly baffle 32, and place it in 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 drainage hole 33, measure the seepage water volume passing through the water outlet hole 35 within a certain time (5 minutes) in the initial state, record it as Q1, and record the water head heights (h1, h2, h3) of each piezometric hole 34 at the same time;

[0097] Step 3: Then, the dust suppressant solution of Brand F is sprayed onto the samples of the terrain simulation component 3 by the dust suppressant application component 4, and wait for 30 minutes for it to act fully.

[0098] Step 4: Measure again according to Step 2 to obtain the water seepage 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 flowing water, Δh is the head difference (the average value of h1 - h2 and h2 - h3), and L is the distance between each piezometer hole), calculate the permeability coefficients K1 and K2 before and after using the dust suppressant respectively, and compare and analyze the influence of the dust suppressant on the permeability coefficient of the tailings.

[0100] Example 2

[0101] Step 1: After putting the tailings samples of the tailings pond into three groups of terrain simulation components 3, place them into the experimental wind tunnel 2. For the first group, the second group, and the third group of terrain simulation components 3, the dust suppressant solution of Brand G is sprayed by the dust suppressant application component 4 at concentrations of 2%, 3%, and 4% of the configured concentration respectively, and let it stand for full effect.

[0102] Step 2: Slowly supply water to the samples through the dust suppressant application component 4, keep the water head height at the drainage hole 33, and measure the water seepage volume and water level difference of each group of tailings within a certain time (such as 3 minutes).

[0103] Step 3: Calculate the permeability coefficients of the tailings after being treated with different concentrations of dust suppressant respectively.

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

[0105] Example 3

[0106] Step 1: Put the tailings samples of 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, place them into the experimental wind tunnel 2, and spray the dust suppressant of Brand H on the samples in the terrain simulation component 3 of the hill type 323 and the terrain simulation component 3 of the flat type 321 respectively through the dust suppressant application component 4.

[0107] Step 2: Slowly supply water to the samples through the dust suppressant application component 4. For the terrain simulation component 3 of the hill type 323, keep the water head height at the drainage hole 33, and measure the water seepage volume and water level difference within a certain time (such as 4 minutes); for the terrain simulation component 3 of the flat type, keep the water head height at the drainage hole 33, and also measure the water seepage volume and water level difference within the same time.

[0108] Step 3: Calculate the permeability coefficients of the samples in the terrain simulation component 3 of the hilly type 323 and the terrain simulation component 3 of the flat type 321 respectively after using the dust suppressant.

[0109] Record the experimental data under different terrains, and compare and analyze the variation differences and reasons of the permeability coefficients of the terrain simulation component 3 of the hilly type 323 and the terrain simulation component 3 of the flat type 321 after using the dust suppressant.

[0110] The above are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art in the technical field of the present application, without departing from the technical principle of the present application, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. An evaluation device for the dust suppression agent effect of a tailings pond, characterized in that Comprising: An air supply component (1); An experimental wind tunnel (2), with the air supply component (1) arranged on one side of the experimental wind tunnel (2); A terrain simulation component (3), with the terrain simulation component (3) arranged inside the experimental wind tunnel (2) for storing samples; A dust suppressant application component (4), with the dust suppressant application component (4) arranged on the experimental wind tunnel (2) for evenly applying the agent to the samples; A data acquisition component (5), the data acquisition component (5) includes an air velocity sensor (51), a dust concentration sensor (52) and a first weight collector (53), the air velocity sensor (51) is arranged on the experimental wind tunnel (2) and is located between the air supply component (1) and the terrain simulation component (3), the dust concentration sensor (52) is arranged on the experimental wind tunnel (2) and is located on the side of the terrain simulation component (3) away from the air velocity sensor (51), the first weight collector (53) is arranged at the bottom of the terrain simulation component (3) for collecting and measuring the weight of the samples before and after the output of the air supply component (1); A control terminal, which analyzes and processes the data collected by the data acquisition component (5).

2. The device for evaluating the dust suppressant effect of a tailings pond 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 arranged inside the experimental wind tunnel (2), the assembly baffle (32) is arranged on the sample container (31), and the assembly baffle (32) includes a flat type (321), a slope type (322) and a hill type (323).

3. The device for evaluating the effect of the tailings pond dust suppressant according to claim 2, characterized in that, The dust suppressant application component (4) includes: A water storage tank (41), with the water storage tank (41) arranged on the experimental wind tunnel (2); A liquid distributor (42), with the liquid distributor (42) arranged inside the experimental wind tunnel (2) and located above the terrain simulation component (3), and the liquid distributor (42) is connected to the water storage tank (41).

4. The dust suppressant effect evaluation device for tailing ponds according to claim 3, characterized in that, The data acquisition component (5) further includes a liquid level sensor (54), with the liquid level sensor (54) arranged inside the water storage tank (41).

5. The device for evaluating the effect of the tailings pond dust suppressant according to claim 1, wherein, The air supply component (1) includes: A fan (11), with a tapered air duct (12) and a flexible air duct (13) sequentially arranged between the fan (11) and the experimental wind tunnel (2); A frequency converter (14), with the frequency converter (14) arranged on the fan (11).

6. The dust suppressant effect evaluation device for tailing ponds according to claim 1, wherein, It further includes a dust treatment component (6), and the dust treatment component (6) includes: A filter (61), with the filter (61) connected to the second end of the experimental wind tunnel (2) through a duct (62) and a converging duct (63).

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

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

9. The device for evaluating the effect of the dust suppressant in the tailings pond according to claim 8, wherein, A measuring cylinder (7) is arranged on one side of the water outlet hole (35).

10. The tailings pond dust suppressant effect evaluation device according to claim 9, characterized in that, The data acquisition component (5) further includes a pressure sensor (55) and a second weight sensor (56). The pressure sensor (55) is disposed on each of the pressure measurement holes (34), and the second weight sensor (56) is used to measure the weight of the measuring cylinder (7).

Images