Tailings pond drainage device

Abstract

This application provides a tailings dam drainage device, comprising: a drainage pipe body, including a first pipe section and a second pipe section with one end being blind; the first pipe section has seepage holes, and its other end is connected to one end of the second pipe section; multiple partition plates, one partition plate is disposed at the other end of the first pipe section, and the remaining partition plates are respectively disposed within the first pipe section, the multiple partition plates being used to divide the first pipe section into multiple seepage chambers; multiple drainage pipes, the multiple drainage pipes having different lengths and corresponding one-to-one with the multiple seepage chambers, one end of each drainage pipe extending from the other end of the second pipe section and penetrating through its corresponding seepage chamber; and a water collection pipe, one end of the water collection pipe being connected to the other end of the second pipe section, used to collect the water discharged from the multiple drainage pipes. This application improves seepage efficiency by ensuring that the seepage process of the remaining seepage chambers is not affected when one or more seepage chambers become blocked.

Description

Technical Field

[0001] This application relates to the field of tailings drainage technology, and in particular to a drainage device for tailings ponds. Background Technology

[0002] Tailings dams are structures built by damming valleys or enclosing land to store tailings (solid waste) or other industrial waste (such as red mud from alumina plants) discharged from metal or non-metal mines after ore beneficiation. They are not only essential facilities for maintaining normal mine production but also the largest environmental protection projects for mining companies. During operation, water in the tailings slurry seeps downstream through the pores of the tailings particles, forming a "seepage line" (similar to a groundwater level). The higher the seepage line, the greater the pore water pressure in the dam body, leading to reduced shear strength and decreased stability. Therefore, drainage devices (such as drainage pipes, wells, or prisms) are needed to drain seepage water from the tailings dam, lower the seepage line depth, and reduce the risk of dam slippage or collapse.

[0003] Existing tailings dam drainage devices mainly employ a combination of stainless steel mesh pipes and water collection pipes to remove water from the slurry. Specifically, one end of the stainless steel mesh pipe is a blind end, while the other end is connected to the water collection pipe. Water from the slurry enters the stainless steel mesh pipe and is discharged through the water collection pipe to separate water from tailings particles. However, smaller tailings particles may also enter the stainless steel mesh pipe. As tailings particles accumulate in the stainless steel mesh pipe, one or more blockages may occur. This blockage can then occur between the point of blockage and the end of the stainless steel mesh pipe furthest from the water collection pipe, preventing seepage water from entering the water collection pipe and resulting in low seepage efficiency. Utility Model Content

[0004] This application provides a tailings dam drainage device to solve the technical problems described in the background section.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] This application provides a tailings dam drainage device, installed inside the tailings dam, for draining water from the slurry in the tailings dam, comprising:

[0007] The drainage pipe body includes a first pipe section and a second pipe section, one end of which is a blind end; the first pipe section has a seepage hole, and its other end is connected to one end of the second pipe section.

[0008] Multiple partition plates, one of which is disposed at the other end of the first pipe section, and the remaining partition plates are respectively disposed within the first pipe section, the multiple partition plates being used to divide the first pipe section into multiple seepage chambers;

[0009] Multiple drain pipes, each of which has a different length and corresponds to a specific infiltration chamber, with one end of each drain pipe extending from the other end of the second pipe section and passing through the corresponding infiltration chamber.

[0010] A water collection pipe, one end of which is connected to the other end of the second pipe section, is used to collect water discharged from the multiple drain pipes.

[0011] Optionally, there are multiple seepage holes, which are evenly distributed on the pipe wall of the first pipe section.

[0012] The diameter of each of the aforementioned seepage holes is 5mm to 10mm.

[0013] Optionally, the diameter of the drain pipe is 2 to 3 times the diameter of the seepage hole.

[0014] Optionally, the length of the first pipe segment is 3 to 7 times the length of the second pipe segment;

[0015] Both the first pipe section and the second pipe section are made of polyvinyl chloride.

[0016] Optionally, one end of the first pipe section is provided with a cleaning port for cleaning the tailings particles in the corresponding seepage chamber.

[0017] A plug is provided on the cleaning port.

[0018] Optionally, the plug is made of polyethylene.

[0019] Optionally, the partition plate is made of polyvinyl chloride or rubber.

[0020] Optionally, the height of the plurality of drain pipes gradually decreases.

[0021] Optionally, one end of the water collection pipe is inclined downwards and connected to the other end of the second pipe section, forming an obtuse angle with the second pipe section.

[0022] Optionally, each of the drain pipes includes a third pipe section and a fourth pipe section;

[0023] The third pipe section is parallel to the main body of the drainage pipe, and one end of it extends into the corresponding seepage chamber.

[0024] One end of the fourth pipe section is connected to the other end of the third pipe section, and it is parallel to the water collection pipe.

[0025] The tailings dam drainage device provided in this application divides a first pipe section into multiple seepage chambers using multiple partition plates. Each seepage chamber contains a drain pipe. Because the first pipe section has seepage holes, water from the slurry enters the seepage chamber through these holes and then drains into a collection pipe through the drain pipe within the seepage chamber. This ensures that the seepage and drainage processes in each seepage chamber are independent. In other words, if one or more seepage chambers become blocked, it does not affect the seepage process in the remaining chambers, thereby improving seepage efficiency. Furthermore, the design of the second pipe section facilitates the drain pipe's insertion from the end furthest from the second pipe section and its penetration through the seepage chamber, improving the ease of installation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a tailings dam drainage device provided in an embodiment of this application;

[0028] Figure 2 Provided for an embodiment of this application Figure 1 Schematic diagram of the internal structure of the drainage and seepage device used in the mid-tailings dam;

[0029] Figure 3 This is a schematic diagram of the structure of a tailings dam drainage device provided in an embodiment of this application;

[0030] Figure 4 Provided for another embodiment of this application Figure 3 A schematic diagram of the drainage and seepage device used in the mid-tailings dam.

[0031] In the diagram: 100, Drainage pipe body; 101, First pipe section; 1011, Seepage hole; 1012, Cleaning port; 102, Second pipe section; 200, Divider plate; 300, Seepage chamber; 400, Drainage pipe; 401, Third pipe section; 402, Fourth pipe section; 500, Water collection pipe; 600, Plug. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0033] refer to Figures 1 to 4 This application provides a tailings dam drainage device, installed inside the tailings dam, for draining water from the slurry in the tailings dam, comprising:

[0034] The drainage pipe body 100 includes a first pipe section 101 and a second pipe section 102, one end of which is a blind end. The first pipe section 101 is provided with a seepage hole 1011, and its other end is connected to one end of the second pipe section 102. In order to improve the seepage efficiency of the first pipe section 101, a seepage hole 1011 is also provided at the blind end of the first pipe section 101. That is, water in the slurry of the slurry can seep not only from the seepage hole 1011 on the periphery of the first pipe section 101 along its length, but also from the seepage hole 1011 on its blind end.

[0035] Multiple partition plates 200 are provided, one of which is disposed at the other end of the first pipe section 101, and the remaining partition plates 200 are disposed within the first pipe section 101. The multiple partition plates 200 are used to divide the first pipe section 101 into multiple seepage chambers 300. The number of partition plates 200 depends on the length and diameter of the first pipe section 101, and can be set according to the actual situation. This application does not impose any specific limitation on it.

[0036] Multiple drain pipes 400, each with a different length, correspond one-to-one with multiple seepage chambers 300. One end of each drain pipe 400 extends from the other end of the second pipe section 102 and passes through the seepage chamber 300 corresponding to it. The length of the multiple drain pipes 400 is sufficient to ensure that they extend from the end of the second pipe section 102 away from the first pipe section 101 and pass through the seepage chamber 300 corresponding to them.

[0037] A water collection pipe 500 is provided, with one end connected to the other end of the second pipe section 102, for collecting water discharged from multiple drain pipes 400. The second pipe section 102 is designed to facilitate the drain pipe 400 to extend from its end away from the second pipe section 102 and penetrate into the seepage chamber 300, thus improving the ease of installation of the drain pipe 400.

[0038] The tailings dam drainage device provided in this application divides the first pipe section 101 into multiple seepage chambers 300 by multiple partition plates 200. Each seepage chamber 300 is connected by a drain pipe 400. Since the first pipe section 101 is provided with seepage holes 1011, water in the slurry enters the seepage chamber 300 through the seepage holes 1011 and then flows into the collection pipe 500 through the drain pipe 400 in the seepage chamber 300. This makes the seepage and drainage processes of each seepage chamber 300 independent. In other words, if one or more seepage chambers 300 become blocked, it will not affect the seepage process of the other seepage chambers 300, thereby improving the seepage efficiency.

[0039] In some embodiments, reference Figure 2 and Figure 4 In this application, there are multiple seepage holes 1011, which are evenly distributed on the pipe wall of the first pipe section 101, thereby improving the uniformity and efficiency of water seepage in the first pipe section 101.

[0040] Furthermore, the diameter of each seepage hole 1011 is 5mm to 10mm. If the diameter of the seepage hole 1011 is too small, the seepage efficiency will be low; if the diameter is too large, larger tailings particles may enter the seepage chamber 300 through the seepage hole, causing rapid blockage. Therefore, the diameter of the seepage hole 1011 needs to be within a suitable range. The seepage hole 1011 in this application has a diameter in the range of 5mm to 10mm, which not only ensures the smooth flow of water into the seepage chamber 300 through the seepage hole 1011, but also prevents a large number of tailings particles from entering the seepage chamber 300 and causing blockage.

[0041] In some embodiments, the diameter of the drain pipe 400 in this application is 2 to 3 times the diameter of the seepage hole 1011. The seepage hole 1011 is designed to ensure water flows smoothly into the seepage chamber 300 while minimizing the entry of large amounts of tailings particles. The fact that the diameter of the drain pipe 400 is 2 to 3 times the diameter of the seepage hole 1011 allows water to quickly drain into the collection pipe 500 after entering the seepage chamber 300, increasing drainage efficiency. Furthermore, the diameter of the drain pipe 400 can be specifically set according to the diameter of the seepage hole 1011 and the diameter of the first pipe section 101, etc., and this application does not further limit it.

[0042] In some embodiments, the length of the first pipe segment 101 in this application is 3 to 7 times the length of the second pipe segment 102; wherein, the arrangement of the second pipe segment 102 facilitates the drainage pipe 400 to extend from its end away from the second pipe segment 102 and penetrate into the seepage chamber 300, thereby improving the ease of installation of the drainage pipe 400. Therefore, the length of the second pipe segment 102 depends on the length of the first pipe segment 101, and the length of the first pipe segment 101 can be set according to actual needs, and this application does not specifically limit it.

[0043] Furthermore, both the first pipe section 101 and the second pipe section 102 are made of polyvinyl chloride (PVC). Because the acidic, alkaline, or saline environments commonly found in tailings ponds (such as heavy metal ions in the slurry and mineral processing reagents) can cause severe corrosion to the first pipe section 101 and the second pipe section 102 installed within them, although existing stainless steel mesh pipes are corrosion-resistant, pitting or stress corrosion can still occur in certain strong acid or high-salt environments. PVC, on the other hand, has a high degree of resistance to chemical corrosion. Therefore, the first pipe section 101 and the second pipe section 102 made of PVC in this application have strong corrosion resistance and extended service life.

[0044] In some embodiments, reference Figure 3 and Figure 4 In this application, one end of the first pipe section 101 is provided with a cleaning port 1012 for cleaning tailings particles in the corresponding seepage chamber 300 (specifically, the cleaning port 1012 is located at the blind end of the first pipe section 101); that is, the cleaning port 1012 facilitates the cleaning of tailings particles in the corresponding seepage chamber 300. Figure 2 or Figure 4 The tailings particles accumulated in the first seepage chamber 300 from left to right are cleaned to ensure that the seepage chamber 300 is always unobstructed. That is to say, after multiple seepage chambers 300 become blocked, the tailings particles in the corresponding seepage chamber 300 are cleaned through the cleaning port 1012 to ensure that the seepage and drainage process in at least one seepage chamber 300 is unobstructed, thus ensuring the operation of the seepage process.

[0045] In addition, a plug 600 is provided on the cleaning port 1012. During the seepage process, in order to prevent external tailings particles from entering the seepage chamber 300 corresponding to the cleaning port 1012 through the cleaning port 1012, the plug 600 can be placed on the cleaning port 1012. When the height of the tailings particles deposited in the seepage chamber 300 is close to that of the drain pipe 400, the plug 600 can be opened to clean the tailings particles deposited in the seepage chamber 300.

[0046] Optionally, in order to ensure the water seepage effect of the first pipe section 101, cleaning ports 1012 (not shown in the figure) can also be started on the peripheral walls of the remaining seepage chambers 300 to clean the tailings particles deposited in the corresponding seepage chambers 300 through the cleaning ports 1012, so as to facilitate the reuse of the first pipe section 101.

[0047] In some embodiments, the plug 600 in this application is made of polyethylene. Polyethylene possesses excellent corrosion resistance, non-scaling properties, low-temperature resistance, wear resistance, long service life, and sealing properties. The plug 600 made of polyethylene can effectively resist corrosion in tailings ponds, preventing seal failure or damage to the cleaning port 1012 due to rust. It can also withstand freeze-thaw cycles and impacts in frigid environments, avoiding the risk of leakage caused by low-temperature brittleness. Therefore, the plug 600 made of polyethylene is more suitable for tailings ponds and has a longer service life.

[0048] In some embodiments, the partition plate 200 in this application is made of polyvinyl chloride (PVC) or rubber. Because PVC and rubber have good corrosion resistance, flexibility, and wear resistance, the partition plate 200 made of PVC or rubber can adapt to the complex terrain or dynamic loads of tailings ponds, resulting in better partitioning performance during use and minimizing the risk of leakage.

[0049] In some embodiments, reference Figure 2 and Figure 4 In this application, the heights of the multiple drainage pipes 400 gradually decrease. If the multiple drainage pipes 400 are at the same height, then when the height of the tailings particles deposited in the seepage chamber 300 exceeds the height of the drainage pipes 400 within the seepage chamber 300, all drainage pipes 400 will become blocked simultaneously. However, in this embodiment, the multiple drainage pipes 400 are located at different heights. That is, after the drainage pipes 400 at lower heights become blocked, the drainage pipes 400 at higher heights remain unobstructed and can continue to seep and drain water. For details, see [link to relevant documentation]. Figure 2 or Figure 4 The height of the drainage pipes 400 corresponding to the seepage chambers 300 from left to right gradually decreases. This way, even if tailings particles enter the seepage chambers 300 and gradually settle inside, the lowest drainage pipe 400 will become blocked first as the deposition height increases. After the lower drainage pipe 400 becomes blocked, the other higher drainage pipes 400 remain unobstructed and the drainage process continues normally. This avoids the situation where the blockage of one seepage chamber 300 and its drainage pipe 400 prevents the other seepage chambers 300 from seeing water, thus ensuring the continuity of the seepage process.

[0050] In some embodiments, reference Figure 2 and Figure 4 In this application, one end of the water collection pipe 500 is inclined downward and connected to the other end of the second pipe section 102, and forms an obtuse angle with the second pipe section 102. This can prevent seepage water from entering the water collection pipe 500 from the drain pipe 400 and stagnating, thereby ensuring gravity drainage and improving drainage efficiency.

[0051] In some embodiments, reference Figure 2 and Figure 4 Each drain pipe 400 in this application includes a third pipe section 401 and a fourth pipe section 402. Specifically, the third pipe section 401 is parallel to the drain pipe body 100, and one end of it extends into the corresponding seepage chamber 300. This allows the water in the seepage chamber 300 to smoothly enter the corresponding drain pipe 400, ensuring the smoothness of the drainage process.

[0052] In addition, one end of the fourth pipe section 402 is connected to the other end of the third pipe section 401, and it is parallel to the water collection pipe 500. This makes the fourth pipe section 402 compatible with the water collection pipe 500, so that the water entering the third pipe section 401 can quickly enter the water collection pipe 500 through the fourth pipe section 402, thus improving drainage efficiency.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A drainage device for a tailings pond, installed in a tailings pond, for draining water from a slurry in the tailings pond, characterized by, include: The drainage pipe body (100) includes a first pipe section (101) and a second pipe section (102) with one end being a blind end; the first pipe section (101) is provided with a seepage hole (1011), and its other end is connected to one end of the second pipe section (102); Multiple partition plates (200), one of which is disposed at the other end of the first pipe section (101), and the remaining partition plates (200) are disposed in the first pipe section (101) respectively. The multiple partition plates (200) are used to divide the first pipe section (101) into multiple seepage chambers (300). Multiple drain pipes (400) have different lengths and correspond one-to-one with multiple seepage chambers (300). One end of each drain pipe (400) extends from the other end of the second pipe section (102) and passes through the seepage chamber (300) corresponding to it. A water collection pipe (500), one end of which is connected to the other end of the second pipe section (102), is used to collect water discharged from the plurality of drain pipes (400).

2. The seepage drainage device for a tailings pond according to claim 1, characterized by There are multiple seepage holes (1011), and the multiple seepage holes (1011) are evenly opened on the pipe wall of the first pipe section (101); The diameter of each of the aforementioned seepage holes (1011) is 5 mm to 10 mm.

3. The seepage drainage device for tailings ponds according to claim 2, characterized in that The diameter of the drain pipe (400) is 2 to 3 times the diameter of the seepage hole (1011).

4. The seepage drainage device for tailings ponds according to claim 1, characterized in that, The length of the first pipe segment (101) is 3 to 7 times the length of the second pipe segment (102); Both the first pipe section (101) and the second pipe section (102) are made of polyvinyl chloride.

5. The seepage drainage device for tailings ponds according to claim 1, characterized in that, One end of the first pipe section (101) is provided with a cleaning port (1012) for cleaning the tailings particles in the corresponding seepage chamber (300). A plug (600) is provided on the cleaning port (1012).

6. The seepage drainage device for tailings ponds according to claim 5, characterized in that The plug (600) is made of polyethylene.

7. The seepage drainage device for tailings ponds according to claim 1, characterized in that, The partition plate (200) is made of polyvinyl chloride or rubber.

8. The seepage drainage device for tailings ponds according to claim 1, characterized in that, The height of the multiple drain pipes (400) gradually decreases.

9. The seepage drainage device for a tailings pond according to any one of claims 1 to 8, characterized by, One end of the water collection pipe (500) is inclined downward and connected to the other end of the second pipe section (102) at an obtuse angle with the second pipe section (102).

10. The seepage drainage device for tailings ponds according to claim 9, characterized in that Each of the drain pipes (400) includes a third pipe section (401) and a fourth pipe section (402). The third pipe section (401) is parallel to the drainage pipe body (100), and one end of it extends into the corresponding seepage chamber (300); One end of the fourth pipe section (402) is connected to the other end of the third pipe section (401), and it is parallel to the water collection pipe (500).

Images