A small and medium-sized tailings dam tailings field dam construction test device

Abstract

The utility model discloses a kind of small and medium-sized tailing pond tailings field dam building test devices, including ore collector, the horn part opening of ore collector is upward, and the bottom of round pipe part is connected with negative pressure guide pipe;Negative pressure guide pipe extends to cylindrical stainless steel container, and its buried depth gradually changes from reservoir circumference to reservoir center along tailing pond dam axis direction;The top of cylindrical stainless steel container is equipped with electric butterfly valve, and inside fixed stirring paddle, and the bottom outlet of cylindrical stainless steel container is connected with cone bottom mixing tank;The top of cone bottom mixing tank is communicated with the water outlet of water purification tank, and inside is equipped with turbine agitator, side wall is equipped with transparent observation window, and bottom is connected with distribution pipeline;Distribution pipeline outlet end is suspended above the starting point of test chute;Test chute side wall every interval fixed distance is laid a group of dam building test test system.The device realizes full-process automatic concentration adjustment, avoids the loss of tailing pond production stop due to test interference, and provides high-precision deposition rule data for fine-grained tailing dam stability research.

Description

Technical Field

[0001] This utility model relates to the field of tailings dam construction technology, specifically a test device for on-site tailings dam construction of small and medium-sized tailings dams. Background Technology

[0002] Traditional tailings dam construction testing methods suffer from significant operational bottlenecks. In actual tailings dam operation, to simulate different dam construction conditions, test personnel must frequently switch between different discharge outlets and repeatedly manually adjust the tailings slurry concentration. This process is not only cumbersome but, more importantly, easily disrupts the normal tailings discharge process, impacting production efficiency and making it difficult to achieve parallel testing and production operations. The excessively long testing cycle is another major constraint. Traditional methods rely on the natural environment for tailings solidification. After tailings are deposited in the test chute, they typically require 2-3 days of natural weathering before being fully solidified and accessible for personnel to enter and collect samples and data. This lengthy solidification waiting period significantly extends the time required for a single test, greatly reducing testing efficiency and making it difficult to meet the need for rapid evaluation of different dam construction parameters. Utility Model Content

[0003] The purpose of this invention is to provide a test device for on-site tailings dam construction in small and medium-sized tailings ponds. This device achieves fully automated concentration adjustment, shortens the test cycle, avoids tailings pond production losses caused by test interference, reduces the frequency of personnel entering high-risk work areas through automated operation, and provides high-precision sedimentation law data for the stability study of fine-grained tailings dams, thus solving the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A test device for on-site tailings dam construction in a small to medium-sized tailings dam includes a ore collector with its flared section opening upwards and a negative pressure guide pipe connected to the bottom of its circular section. The negative pressure guide pipe extends to a cylindrical stainless steel container, with its burial depth gradually changing from the periphery to the center of the tailings dam along the dam's axis. An electric butterfly valve is installed at the top of the cylindrical stainless steel container, and a fixed stirring paddle is inside. The bottom outlet of the cylindrical stainless steel container is connected to a conical-bottom mixing tank. The top of the conical-bottom mixing tank is connected to the outlet of a clean water tank, and a turbine stirrer is installed inside. A transparent observation window is provided on the side wall, and a distribution pipe is connected to the bottom. The outlet end of the distribution pipe is suspended above the starting point of the test chute. A set of dam construction test systems is arranged at fixed intervals on the side wall of the test chute.

[0006] Preferably, the dam construction test system includes a curing chamber, a multi-parameter sensor, a data analyzer, and a sample collector; the curing chamber is a sealed insulated box with an aluminum alloy frame, with a built-in 1000W halogen lamp group simulating fluorescent lights and a fan simulating natural wind; the sensor probes of the multi-parameter sensor are vertically inserted into the slurry sediment layer of the test chute; the data analyzer is connected to the multi-parameter sensor through a waterproof cable; and the sample collector is in contact with the slurry sediment surface.

[0007] Preferably, the stirring paddle is connected to a motor located at the top of the cylindrical stainless steel container via a vertical shaft, the stirring paddle is 10cm from the bottom of the cylindrical stainless steel container, and the rotation speed is 5 revolutions / s.

[0008] Preferably, the water tank has a built-in quartz sand filter.

[0009] Preferably, the gap between the impeller of the turbine mixer and the inner wall of the conical bottom mixing tank is ≤5cm, and the rotation speed is 5 revolutions / s.

[0010] Preferably, the distribution pipe is a 304 stainless steel tee pipe, with the inlet end vertically connected to the center of the bottom of the cone-bottom mixing tank, and the number of branches at the outlet end corresponding to the number of test chutes.

[0011] Preferably, the negative pressure drainage pipe has a diameter of 40mm and is buried at a depth of 1m to 10m below the tailings accumulation layer in the reservoir.

[0012] Preferably, the sample collector includes a vacuum pipette and a vacuum pump, the vacuum pipette is connected to the vacuum pump, and the end of the vacuum pipette is provided with a 0.1mm filter screen that is in contact with the slurry deposition surface.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model achieves fully automated regulation of tailings slurry collection and concentration through the integrated control of a tailings collector, a negative pressure discharge pipe, and an electric butterfly valve. The tailings collector directly extracts tailings from the tailings dam using gravity and negative pressure adsorption principles. Combined with the precise control of the slurry flow rate by the electric butterfly valve, it completely replaces the cumbersome operation of repeatedly switching discharge ports and manually adjusting the concentration in traditional experiments. This not only significantly reduces the intensity of manual intervention, but more importantly, it avoids interference with the normal tailings discharge process of the tailings dam due to experimental operations, fundamentally eliminating the production losses that may be caused by traditional methods and ensuring production continuity.

[0015] 2. This invention, through the combination of a built-in halogen lamp assembly and a fan, forcibly completes the slurry solidification process in a short time, improving testing efficiency by nearly 100 times compared to the two to three days required for natural solidification. The simultaneously equipped automated testing system can collect data and encapsulate samples immediately after solidification, without requiring personnel to enter the sluice box operating area. This design significantly shortens the single test cycle and substantially reduces the frequency of personnel entering high-risk tailings deposition areas, greatly improving operational safety.

[0016] 3. This utility model is equipped with a multi-parameter sensor that is vertically inserted into the slurry sediment layer to measure the water content, density and flow velocity in real time. The data analyzer automatically generates dynamic sedimentation law curves and comparison charts, which completely replaces the traditional manual step-by-step measurement mode, eliminates human operation errors, and ensures high-precision and high-time-efficiency acquisition of sedimentation process parameters. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a diagram showing the connection relationship of the negative pressure conduit pipe of this utility model;

[0019] Figure 3 This is a schematic diagram of the distribution pipe and test chute of this utility model;

[0020] Figure 4 This is a diagram showing the positional relationship between the test chute and the dam construction test system of this utility model;

[0021] Figure 5 This is an isometric view of the ore collector of this utility model;

[0022] Figure 6 This is a schematic diagram of the cylindrical stainless steel container and the conical bottom mixing tank of this utility model.

[0023] In the diagram: 1. Ore collector; 2. Negative pressure guide pipe; 3. Cylindrical stainless steel container; 4. Agitator; 5. Clean water tank; 6. Turbine agitator; 7. Distribution pipe; 8. Conical bottom mixing tank; 9. Curing box; 10. Multi-parameter sensor; 11. Data analyzer; 12. Sample collector; 13. Test chute; 14. Horn section; 15. Circular pipe section; 16. Electric butterfly valve; 17. Motor; 18. Vertical axis; 19. Transparent observation window; 20. Tailings dam; 21. Dam construction test system. Detailed Implementation

[0024] 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.

[0025] To address the problems of cumbersome operation, excessively long testing time, and human measurement errors caused by the need for repeated concentration adjustments at different discharge outlets in traditional tailings dam construction tests, the following technical solution is proposed. Please refer to [link / reference]. Figure 1-6 ;

[0026] A test device for on-site tailings dam construction of a small and medium-sized tailings dam includes a ore collector 1. The ore collector 1 includes an upper horn-shaped part 14 and a bottom-connected circular pipe part 15. The horn-shaped part 14 has a horn-shaped opening structure, and the end of the circular pipe is connected to a negative pressure drainage pipe 2. The tailings are collected by gravity discharge of slurry and negative pressure adsorption principle.

[0027] The negative pressure drainage pipe 2 is made of PPR material with a diameter of 40mm. It is buried at a depth of 1m to 10m below the tailings accumulation layer in the tailings dam. That is, the burial depth of the negative pressure drainage pipe 2 gradually changes along the axis of the tailings dam 20, with a burial depth of 1m around the dam and gradually increasing to 10m towards the center of the dam. The joint is sealed with a rubber ring to prevent leakage, and it extends to the cylindrical stainless steel container 3 with a 5% slope. The slurry is drained to the cylindrical stainless steel container 3 by gravity and temporarily stored in the cylindrical stainless steel container 3.

[0028] The top of the cylindrical stainless steel container 3 is equipped with an electric butterfly valve 16, which controls the slurry flow rate to 0.5~2m³ / min by the opening and closing of the electric butterfly valve 16. The cylindrical stainless steel container 3 is equipped with a stirring paddle 4, which is made of 304 stainless steel. The stirring paddle 4 is driven by a motor 17 to rotate the vertical shaft 18 at a speed of 5 revolutions / s. The blade is 10cm away from the bottom of the container, which makes the slurry uniformly mixed, reduces sedimentation and coagulation, and reduces test errors. The bottom outlet of the cylindrical stainless steel container 3 is connected to the conical bottom mixing tank 8 below it, through which the slurry is deeply adjusted and temporarily stored.

[0029] A clean water tank 5 is provided on one side of the cone-bottom mixing tank 8. The clean water tank 5 is connected to an external water source or tap water pipe through a pipeline. It has a built-in quartz sand filter, and its outlet is located at the top of the cone-bottom mixing tank 8. It supplies filtered clean water to the cone-bottom mixing tank 8 in a metered manner. The cone-bottom mixing tank 8 is equipped with a turbine agitator 6 for shearing and mixing mineral slurry and clean water. The gap between the blade and the inner wall of the facility is ≤5cm, and the rotation speed is 5 revolutions / s. It fully mixes the clean water and mineral slurry to achieve the target concentration. The side wall of the cone-bottom mixing tank 8 is provided with a transparent observation window 19 with a concentration scale.

[0030] A distribution pipe 7 is connected to the bottom of the cone-bottom mixing tank 8. The distribution pipe 7 is a 304 stainless steel tee pipe. The inlet end of the distribution pipe 7 is connected to the bottom of the cone-bottom mixing tank 8, and the outlet end is suspended directly above the starting point of different test sluices 13 and sprays slurry. The number of branches at the outlet end corresponds to the number of test sluices 13.

[0031] The test chute 13 is a U-shaped trough made of fiberglass with a slope of 3°. Sensor mounting holes are reserved on its side wall at intervals of 10m. The test chute 13 serves as a standardized test channel for slurry flow and deposition. A set of dam construction test systems 21 is set up every 10m in the test chute 13 to measure data at different distance points.

[0032] The dam construction test system 21 includes a curing chamber 9, a multi-parameter sensor 10, a data analyzer 11, and a sample collector 12. The curing chamber 9 is a sealed, insulated aluminum alloy frame box, located on the side wall of the test sluice 13. It contains a 1000W halogen lamp group simulating fluorescent lighting and a fan simulating natural wind to solidify the slurry in a simulated natural weathering environment. The curing time is ≤5 minutes. The sensor probe of the multi-parameter sensor 10 is vertically inserted into the slurry sediment layer of the test sluice 13 to collect slurry data and simultaneously measure water content, density, and flow rate. The data analyzer 11 is connected to the multi-parameter sensor 10 via a waterproof cable, automatically generating test curves and sedimentation pattern comparison charts, transmitting data, and automatically sending it to a computer. The sample collector 12 includes a vacuum pipette and a vacuum pump. The end of the vacuum pipette is equipped with a 0.1mm filter screen that contacts the slurry sediment surface, allowing for non-destructive extraction of the solidified sample and vacuum sealing for subsequent laboratory tests.

[0033] Working Principle: This device collects tailings through a collector 1, whose flared section 14 utilizes gravity and negative pressure adsorption to collect the tailings slurry. The slurry enters the negative pressure guide pipe 2 through the circular pipe 15 at the bottom of the collector 1. This pipe is buried at a depth of 1m to 10m below the axis of the tailings dam 20 with a 5% slope, and the slurry is transported by gravity to a cylindrical stainless steel container 3. An electric butterfly valve 16 at the top of the container controls the slurry flow rate within the range of 0.5~2m³ / min. Inside the container, a motor 17 drives a vertical shaft 18 to rotate an agitator 4 at a speed of 5 revolutions / s to prevent slurry sedimentation and ensure uniformity. The mixed slurry flows from the bottom of the cylindrical stainless steel container 3 into a conical bottom mixing tank 8. A purified water tank 5 supplies filtered purified water to the conical bottom mixing tank 8 in a metered manner. Inside the tank, a turbine agitator 6 rotates at a speed of 5 revolutions / s to strongly shear and mix the slurry and purified water. Operators can monitor the slurry concentration in real time through a transparent observation window 19 on the side wall of the conical bottom mixing tank 8.

[0034] The prepared slurry is distributed through the distribution pipe 7 at the bottom of the conical-bottom mixing tank 8 and sprayed to the starting points of different test chutes 13. The slurry flows and settles within the test chutes 13 with a slope of 3°. A set of dam-building test systems 21 is set up every 10m along the chutes: a solidification box 9 uses a built-in halogen lamp group and a fan to simulate the natural weathering environment, so that the slurry solidifies within ≤5min; the probe of the multi-parameter sensor 10 is vertically inserted into the sediment layer to collect water content, density and flow velocity data in real time; the data analyzer 11 receives the sensor signals and automatically generates a comparison chart of the test curve and the sedimentation pattern; the sample collector 12 uses a vacuum pipette with a 0.1mm filter at the end to non-destructively extract the solidified sample and vacuum seal it. The entire system realizes a continuous test process of tailings slurry collection, preparation, flow sedimentation simulation and solidification parameter testing.

[0035] 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 process, method, article, or apparatus.

[0036] 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.

Claims

1. A test device for on-site tailings dam construction of small and medium-sized tailings ponds, comprising a ore collector (1), characterized in that, The horn section (14) of the ore collector (1) opens upwards, and the bottom of the circular tube section (15) is connected to the negative pressure guide pipe (2); the negative pressure guide pipe (2) extends to the cylindrical stainless steel container (3), and its burial depth gradually changes from the periphery to the center of the tailings dam (20) along the axis direction; the top of the cylindrical stainless steel container (3) is equipped with an electric butterfly valve (16), and the inside is fixed with a stirring paddle (4). The bottom outlet of the cylindrical stainless steel container (3) is connected to the conical bottom mixing tank (8); the top of the conical bottom mixing tank (8) is connected to the outlet of the clean water tank (5), and the inside is equipped with a turbine stirrer (6). The side wall is equipped with a transparent observation window (19), and the bottom is connected to the distribution pipe (7); the outlet end of the distribution pipe (7) is suspended above the starting point of the test chute (13); a set of dam construction test systems (21) are arranged at fixed intervals on the side wall of the test chute (13).

2. The experimental device for on-site tailings dam construction of a small to medium-sized tailings dam according to claim 1, characterized in that, The dam construction test system (21) includes a curing box (9), a multi-parameter sensor (10), a data analyzer (11), and a sample collector (12). The curing box (9) is an aluminum alloy frame sealed heat-insulating box with a built-in 1000W halogen lamp group simulating fluorescent lamps and a fan simulating natural wind. The sensor probe of the multi-parameter sensor (10) is vertically inserted into the slurry sediment layer of the test chute (13). The data analyzer (11) is connected to the multi-parameter sensor (10) through a waterproof cable. The sample collector (12) is in contact with the slurry sediment surface.

3. The experimental device for on-site tailings dam construction of a small to medium-sized tailings dam according to claim 2, characterized in that, The stirring paddle (4) is connected to the motor (17) set on the top of the cylindrical stainless steel container (3) via a vertical shaft (18). The stirring paddle (4) is 10cm away from the bottom of the cylindrical stainless steel container (3) and rotates at 5 revolutions / s.

4. The experimental device for on-site tailings dam construction of a small-to-medium-sized tailings dam according to claim 3, characterized in that, The water tank (5) has a built-in quartz sand filter.

5. The experimental device for on-site tailings dam construction of a small to medium-sized tailings dam according to claim 4, characterized in that, The gap between the blades of the turbine mixer (6) and the inner wall of the cone-bottom mixing tank (8) is ≤5cm, and the rotation speed is 5 revolutions / s.

6. The experimental device for on-site tailings dam construction of a small to medium-sized tailings dam according to claim 5, characterized in that, The distribution pipe (7) is a 304 stainless steel tee pipe, with the inlet end vertically connected to the center of the bottom of the cone-bottom mixing tank (8), and the number of branches at the outlet end corresponding to the number of test chutes (13).

7. The experimental device for on-site tailings dam construction of a small to medium-sized tailings dam according to claim 6, characterized in that, The negative pressure drainage pipe (2) has a diameter of 40 mm and is buried 1 m to 10 m below the tailings accumulation layer in the reservoir.

8. The experimental device for on-site tailings dam construction of a small to medium-sized tailings dam according to claim 7, characterized in that, The sample collector (12) includes a vacuum pipette and a vacuum pump. The vacuum pipette is connected to the vacuum pump, and the end of the vacuum pipette is equipped with a 0.1mm filter screen that is in contact with the slurry deposition surface.

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