Tailing pond initial dam inner slope efficient drainage device

Abstract

The utility model discloses a tailing pond initial dam inner slope high-efficiency seepage drainage device which comprises a dam body, a rock-fill water collecting prism body and an inverted filter covering a slope face are arranged at the bottom of an inverted seepage face of the dam body, a plurality of seepage pipes are arranged below the inverted filter and on the inner layer of the inverted filter, the seepage pipes are arranged from top to bottom, and the seepage pipes are arranged on the inner layer of the dam body. The lower ends of the percolation pipes extend into the rockfill water collecting prisms, a gas conveying pipe communicated with the upper ends of the percolation pipes is arranged on the upper portion of the dam body, a branch connecting piece is communicated between each percolation pipe and the gas conveying pipe, and a gas pumping-out assembly is further communicated with the gas conveying pipe. High-pressure gas is pumped into the gas conveying pipe by the gas pumping-out assembly at set intervals, high-pressure air is injected into the percolation pipe under the cooperation of the branch connecting piece, and linear high-pressure gas pushing is formed in an inner cavity of the percolation pipe, so that sludge, fine particles and the like adhering to the pipe are blown into the rock-fill water collecting prism together.

Description

Technical Field

[0001] This utility model relates to the field of reverse filtration and drainage technology, specifically to a high-efficiency drainage device for the inner slope of the initial tailings dam. Background Technology

[0002] A tailings dam is a site constructed by damming valleys or enclosing land to store tailings or other industrial waste generated after mineral processing in metal or non-metal mines. Its core functions are environmental protection and resource storage, but it is also a high-potential source of man-made debris flows. Tailings dams are mostly used to store tailings slurry with high mud content and fine particle size. To prevent seepage water generated during storage from carrying tailings mud or soil and other fine particles out of the dam through the rockfill drainage prism at the bottom of the dam, thus polluting the surrounding environment, drainage devices are installed inside the tailings dam. These devices not only drain seepage water but also accelerate the drainage and consolidation of tailings deposited in front of the dam. In related technologies, such as the high-efficiency drainage device for the inner slope of the initial dam of a tailings dam (publication number CN202117155U), it includes a dam body, a water collection prism and its drainage pipes located at the bottom of the dam body, and a filter layer located on the inner slope of the dam body. The feature is that a pipe network composed of longitudinally and transversely crisscrossing and interconnected percolating pipes is provided below the filter layer; and the intersections of the longitudinally and transversely crisscrossing percolating pipes are interconnected by tees or crosses; the drainage pipe network composed of longitudinally and transversely crisscrossing and interconnected percolating pipes located below the filter layer will not adversely affect the water filtration effect of the filter layer.

[0003] The above technical solutions can theoretically solve or alleviate the problems caused by the rise of the tailings dam seepage line due to the blockage and failure of the filter layer, as well as the associated problems caused by the seepage line overflowing from the initial dam top after the dam is built. However, because the infiltration pipes 3 and 4 are interconnected in a crisscross pattern, the filtration capacity of the dam's filter layer is affected by factors such as stone gradation, construction flatness, and uneven distribution of fine particles. This can lead to fine particles concentrating and flowing into the crisscrossing pipe network in some areas along with the seepage water. Since each junction faces at least three fluid pathways from the left, right, and above, it is easy for the pipe junctions or local sections to become blocked in a short period of time due to excessive unit drainage volume. This then distributes the drainage pressure to adjacent pipes and pipe junctions, and the resulting blockage can easily cause localized fault blockages in the infiltration pipe network on the filter layer. As a result, when there is a slight blockage in the local filter layer, the seepage water above cannot be smoothly discharged to the rockfill water collection prism, and once this happens, there are no or it is not easy to implement measures to clear and remedy the blockage.

[0004] In order to address the above problems, it is necessary to improve and refine the existing technology. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] Therefore, the purpose of this utility model is to provide an efficient drainage device for the initial slope of the tailings dam, in order to solve the problem mentioned in the background art that the existing efficient drainage devices for the initial slope of the tailings dam are prone to blockage at pipe junctions or local pipe sections due to excessive unit drainage volume in a short period of time. This leads to the distribution of drainage pressure to adjacent pipes and pipe junctions, and the resulting blockage can easily cause localized fault blockage in the permeable pipe network on the filter layer. As a result, when there is a slight blockage in the local filter layer, the upper permeable water is difficult to drain smoothly to the rockfill water collection prism, and there are no or difficult measures to dredge and remedy this situation.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency seepage drainage device for the inner slope of the initial tailings dam, comprising a dam body, wherein the bottom of the reverse seepage surface of the dam body has a rockfill water collection prism and a reverse filter layer covering the slope surface, wherein a plurality of seepage pipes are provided below and inside the reverse filter layer, the plurality of seepage pipes are arranged from top to bottom, and the lower end of the seepage pipes extends into the rockfill water collection prism, wherein a gas transmission pipe is provided at the upper part of the dam body and connected to the upper end of the plurality of seepage pipes, wherein a branch connector is connected between each seepage pipe and the gas transmission pipe, and a gas pumping assembly is also connected to the gas transmission pipe, wherein a drainage pipe is arranged in the rockfill water collection prism and runs through the outer side of the dam body.

[0008] As a preferred embodiment of the high-efficiency drainage device for the initial slope of the tailings dam described in this utility model, the gas transmission pipe and several percolation pipes form a drainage operation unit, and the percolation pipes are laid on the slope of the dam body, and several evenly distributed filter holes are opened on the pipe body of the percolation pipe.

[0009] As a preferred embodiment of the high-efficiency drainage device for the initial slope of the tailings dam described in this utility model, the branch connection includes a gas guiding hose with one end connected to the gas transmission pipe and the other end connected to the upper end of the seepage pipe, and a valve disposed at the junction of the gas guiding hose and the gas transmission pipe.

[0010] As a preferred embodiment of the high-efficiency drainage device for the initial slope of the tailings dam described in this utility model, the gas pumping assembly includes a high-pressure gas pump installed on the upper part of the dam body and a main gas supply pipe with one end connected to a gas supply pipe and the other end connected to the output end of the high-pressure gas pump, wherein the main gas supply pipe is a flexible hose.

[0011] As a preferred embodiment of the high-efficiency drainage device for the inner slope of the initial dam of the tailings dam described in this utility model, the seepage pipe extends to the lower end of the rockfill water collection prism and is connected to a buffer cylinder, and the buffer cylinder has several through holes.

[0012] As a preferred embodiment of the high-efficiency drainage device for the inner slope of the initial dam of the tailings dam described in this utility model, the upper part of the dam body also has a placement groove for placing the gas transmission pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-efficiency seepage drainage device for the initial slope of the tailings dam is achieved by arranging several seepage pipes from top to bottom along the inner slope of the dam body, with the bottom of the seepage pipes extending into the rockfill water collection prism. In this way, the seepage water entering the filter layer will flow directly into the rockfill water collection prism through the seepage pipes and be discharged through the drainage pipe, avoiding the concentrated convergence and blockage situation in the prior art. In order to ensure the smooth flow of the seepage pipes, high-pressure gas is injected into the air supply pipe by the gas pump component at regular intervals, and high-pressure air is injected into the seepage pipe with the cooperation of the branch connection, forming a straight high-pressure air thrust in the inner cavity of the seepage pipe, thereby blowing the sludge and fine particles adhering to the pipe into the rockfill water collection prism. A small amount of fine particles of mud and sand will not affect the normal use and seepage drainage of the water collection prism and drainage pipe. It is especially suitable for the stable seepage drainage of the initial slope of the tailings dam and is suitable for widespread use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall layout structure of the percolation pipe of this utility model;

[0015] Figure 2 This is a side view schematic diagram of the seepage drainage structure of the dam body of this utility model;

[0016] Figure 3 This is a schematic diagram of a partial connection structure of the gas pipeline of this utility model;

[0017] Figure 4 This is a schematic diagram of the buffer cylinder structure of this utility model.

[0018] In the diagram: 100, Dam body; 110, Rockfill water collection prism; 120, Filter layer; 130, Installation trench; 200, Infiltration pipe; 2001, Filter hole; 210, Buffer cylinder; 2101, Through hole; 300, Gas transmission pipe; 400, Branch connector; 410, Gas guide hose; 420, Valve; 500, Gas pump assembly; 510, High-pressure gas pump; 520, Main gas transmission pipe; 600, Drainage pipe. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] Figures 1-4 The diagram shown is a complete structural schematic of the high-efficiency seepage drainage device for the initial slope of the tailings dam of this utility model. Please refer to [link / reference]. Figures 1-4 The tailings dam initial dam inner slope high-efficiency drainage device of this embodiment includes a dam body 100. The bottom of the reverse seepage surface of the dam body 100 has a rockfill water collection prism 110 and a reverse filter layer 120 covering the slope surface. Several seepage pipes 200 are provided below and inside the reverse filter layer 120. The several seepage pipes 200 are arranged from top to bottom. The lower end of the seepage pipe 200 extends into the rockfill water collection prism 110. A gas transmission pipe 300 is provided on the upper part of the dam body 100 and is connected to the upper end of the several seepage pipes 200. A branch connector 400 is connected between each seepage pipe 200 and the gas transmission pipe 300. A gas pumping component 500 is also connected to the gas transmission pipe 300. A drainage pipe 600 is arranged in the rockfill water collection prism 110 and runs through the outside of the dam body 100.

[0023] A gas transmission pipe 300 and several infiltration pipes 200 constitute a drainage operation unit. The infiltration pipes 200 are laid along the slope of the dam body 100, and several evenly distributed filter holes 2001 are opened on the pipe body of the infiltration pipe 200. It should be noted that the infiltration pipes 200 here can also be permeable pipes, including the perforated pipes in this embodiment, and there is no limitation on this. The branch connector 400 includes a gas guiding hose 410 with one end connected to the gas transmission pipe 300 and the other end connected to the upper end of the infiltration pipe 200, and a valve 420 disposed at the junction of the gas guiding hose 410 and the gas transmission pipe 300. It is understood that valve 420 can be a manual valve or a solenoid valve. In this embodiment, a solenoid valve is preferred. For example, the opening and closing of each solenoid valve can be controlled by a controller. The purpose of setting valve 420 is to close a part of the pipeline in sequence each time the infiltration pipe 200 is cleared, and concentrate the air pressure to inject air into the other part of the infiltration pipe 200 for conduction. In actual use, valve 420 can also be eliminated, and only the air guiding hose 410 for connection is set, depending on the actual situation. The gas pumping assembly 500 includes a high-pressure gas pump 510 set on the upper part of the dam body 100, and a main gas supply pipe 520 connected at one end to the gas supply pipe 300 and at the other end to the output end of the high-pressure gas pump 510, and the main gas supply pipe 520 is a hose. Specifically, in this embodiment, during use, several infiltration pipes 200 are laid out from top to bottom along the inner slope of the dam body 100, with the bottom of the infiltration pipes 200 extending into the rockfill water collection prism 110. In this way, the seepage water entering the filter layer 120 will flow directly into the rockfill water collection prism 110 through the infiltration pipes 200 and be discharged through the drainage pipe 600, avoiding the situation of concentrated convergence and blockage that occurs in the prior art. In order to ensure the smooth flow of the infiltration pipes 200, high-pressure gas is injected into the air supply pipe 300 by the gas pump component 500 at regular intervals, and high-pressure air is injected into the infiltration pipes 200 with the cooperation of the branch connector 400, forming a straight high-pressure air thrust in the inner cavity of the infiltration pipes 200, thereby blowing the sludge and fine particles adhering to the pipe into the rockfill water collection prism 110. A small amount of fine particles of mud and sand will not affect the normal use and drainage of the water collection prism and the drainage pipe 600.

[0024] Furthermore, the infiltration pipe 200 extends to the lower end of the rockfill water collection prism 110 and is connected to a buffer cylinder 210, which has several through holes 2101. Here, the diameter of the buffer cylinder 210 is larger than the diameter of the infiltration pipe 200, and the bottom of the buffer cylinder 210 is a through structure. The buffer cylinder 210 can provide a buffering effect on the infiltration pipe 200 during the air blowing process. At the same time, the cooperation between the buffer cylinder 210 and the through holes 2101 increases the contact area between the bottom end of the infiltration pipe 200 and the rockfill water collection prism 110, thereby improving the drainage effect.

[0025] Furthermore, the upper part of the dam body 100 also has a placement groove 130 for placing the gas transmission pipe 300. The placement groove 130 can be used to position the gas transmission pipe 300, preventing it from rolling down or suspending on the infiltration pipe 200 during use.

[0026] In summary, the high-efficiency seepage drainage device on the inner slope of the initial tailings dam in this embodiment, when in use, involves arranging several seepage pipes 200 from top to bottom along the inner slope of the dam body 100, with the bottom of the seepage pipes 200 extending into the rockfill water collection prism 110. In this way, seepage water entering the filter layer 120 flows directly into the rockfill water collection prism 110 through the seepage pipes 200 and is discharged through the drainage pipe 600, avoiding the concentrated congestion and blockage situation found in existing technologies. Furthermore, to ensure the unobstructed flow of the seepage pipes 200... At regular intervals, high-pressure gas is pumped into the gas supply pipe 300 by the gas pump component 500, and high-pressure air is injected into the percolation pipe 200 with the cooperation of the branch connector 400. This creates a straight high-pressure air thrust inside the percolation pipe 200, thereby blowing the sludge and fine particles adhering to the pipe into the rockfill water collection prism 110. A small amount of fine sand will not affect the normal use and drainage of the water collection prism and drainage pipe 600. This method is especially suitable for stabilizing the seepage drainage on the slope inside the initial dam of tailings ponds and is suitable for widespread use.

[0027] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-efficiency seepage drainage device for the initial slope of a tailings dam, characterized in that, The dam body (100) includes a rockfill water collection prism (110) at the bottom of the reverse seepage surface of the dam body (100) and a reverse filter layer (120) covering the slope surface. Several infiltration pipes (200) are provided below and inside the reverse filter layer (120). The several infiltration pipes (200) are arranged from top to bottom. The lower end of the infiltration pipe (200) extends into the rockfill water collection prism (110). A gas transmission pipe (300) is provided on the upper part of the dam body (100) and is connected to the upper end of the several infiltration pipes (200). A branch connector (400) is connected between each infiltration pipe (200) and the gas transmission pipe (300). A gas pumping assembly (500) is also connected to the gas transmission pipe (300). A drainage pipe (600) is arranged in the rockfill water collection prism (110) that runs through the outside of the dam body (100).

2. The high-efficiency seepage drainage device for the initial slope of the tailings dam according to claim 1, characterized in that: The gas transmission pipe (300) and several infiltration pipes (200) form a drainage operation unit, and the infiltration pipes (200) are laid on the slope of the dam body (100). Several evenly distributed filter holes (2001) are opened on the pipe body of the infiltration pipes (200).

3. The high-efficiency seepage drainage device for the initial slope of the tailings dam according to claim 1, characterized in that: The branch connector (400) includes a gas guide hose (410) with one end connected to the gas supply pipe (300) and the other end connected to the upper end of the permeation pipe (200), and a valve (420) disposed at the junction of the gas guide hose (410) and the gas supply pipe (300).

4. The high-efficiency seepage drainage device for the initial slope of the tailings dam according to claim 1, characterized in that: The gas pump assembly (500) includes a high-pressure gas pump (510) installed on the upper part of the dam body (100) and a gas main pipe (520) with one end connected to the gas pipeline (300) and the other end connected to the output end of the high-pressure gas pump (510), and the gas main pipe (520) is a flexible hose.

5. The high-efficiency seepage drainage device for the initial slope of the tailings dam according to claim 1, characterized in that: The infiltration pipe (200) extends to the lower end of the rockfill water collection prism (110) and is connected to a buffer cylinder (210), which has several through holes (2101).

6. The high-efficiency seepage drainage device for the initial slope of the tailings dam according to claim 1, characterized in that: The upper part of the dam body (100) also has a placement slot (130) for placing the gas pipeline (300).

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