Novel electric seepage drainage system for tailings pond

Abstract

The invention relates to the technical field of tailing pond engineering, in particular to a novel electric seepage drainage system for a tailing pond, and solves the problems that the seepage drainage effect of an existing system becomes poor, clogging is prone to occurring, dam break of the tailing pond can be caused by failure of a seepage drainage system, and the seepage drainage effect is poor due to the fact that the particle size of tailings is refined, the permeability coefficient of the tailings is reduced and the permeability of the tailings becomes poor. The system comprises a drainage and seepage electrode, a power supply system, a tailing pond fill dam and a dam face drainage pipe system, the tailing pond fill dam comprises a plurality of sub dams, the drainage and seepage electrode comprises a drainage and seepage anode and a drainage and seepage cathode, and the drainage and seepage cathode comprises a drainage and seepage pipe and a drainage mat. The electric method is adopted for construction of the tailing pond drainage and seepage system, main drainage and seepage power of the tailing pond electric drainage and seepage system comes from a direct-current electric field applied to tailings, the permeability of the tailings is improved, and therefore the working efficiency of the tailing drainage and seepage system is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tailings pond engineering, in particular to a new electric seepage drainage system for a tailings pond. Background Art

[0002] Tailings are one of the products of sorting operations in mineral processing. The part of the products of sorting operations in mineral processing that has a low content of useful target components and cannot be used for production is called tailings. In order to ensure the structural safety and long-term stability of the tailings dam, it is necessary to prevent potential risks by controlling seepage. Tailings drainage can lower the dam infiltration line, discharge groundwater and seepage water, and ensure the overall stability of the dam.

[0003] The existing tailings dam drainage system relies on the permeability of the tailings sand itself for drainage. However, with the development of mining technology, the tailings particle size has been refined, resulting in a decrease in the permeability coefficient of the tailings and a deterioration in the permeability of the tailings itself, which in turn makes the drainage effect of the existing system worse and prone to siltation. Failure of the drainage system may lead to the collapse of the tailings pond, causing harm to people, buildings and land downstream. Therefore, it does not meet the existing needs. In this regard, the inventors have proposed a new electric drainage system for tailings ponds. Summary of the Invention

[0004] The purpose of the present invention is to provide a new electric drainage system for a tailings pond to solve the problem that the existing tailings dam drainage system proposed in the above background technology relies on the permeability of the tailings sand itself for drainage. However, with the development of mining technology, the tailings particle size has been refined, resulting in a decrease in the permeability coefficient of the tailings and a deterioration in the permeability of the tailings itself, which in turn makes the drainage effect of the existing system worse and prone to siltation. The failure of the drainage system will lead to the collapse of the tailings pond, causing harm to people, buildings and land downstream.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a new electric drainage system for a tailings pond, comprising drainage electrodes, a power supply system, an online monitoring system for a tailings pond, a tailings pond dam, and a dam surface drainage system, wherein the tailings pond dam comprises a plurality of sub-dams;

[0006] The drainage electrode includes a drainage anode and a drainage cathode;

[0007] The drainage anode and the drainage cathode both include a drainage pipe and a drainage mat, wherein the drainage pipe is clamped on the drainage mat, and the drainage mat is located at the bottom of the sub-dam;

[0008] The power supply system includes solar panels, batteries and power switches;

[0009] The dam surface drainage pipe system includes a secondary drainage pipe and a main drainage pipe, and the secondary drainage pipe is connected to the drainage cathode.

[0010] Preferably, the drainage pipe includes a plastic pipe, a power supply wire and a flower pipe section, the flower pipe section is fixed to one end of the plastic pipe, and the other end of the plastic pipe is connected to the secondary drainage pipe.

[0011] Preferably, the power supply wire is parallel to and fits on the outside of the plastic pipe, and the length of the drainage mat is consistent with the length of the flower pipe section.

[0012] Preferably, the outer side of the flower tube segment is wrapped with graphite carbon felt, and the graphite carbon felt and the flower tube segment are bonded with glue. The portion of the power supply wire located in the flower tube segment is a metal wire with its outer skin peeled off.

[0013] Preferably, the metal wire with the outer skin peeled off from the power supply conductor is in direct contact with the graphite carbon felt, and the length of the flower pipe section is set according to the drainage requirements of the tailings pond.

[0014] Preferably, the drainage anode and drainage cathode are distributed at the bottom of each level of the tailings pond dam, and the drainage anode and drainage cathode are distributed parallel to each other up and down, with the distance between the drainage anode and drainage cathode being no more than 30 cm, and the drainage anode and drainage cathode have a slope of 2-4% toward the dam surface of the sub-dam.

[0015] Preferably, the anode of the battery is connected to the drainage anode of the sub-dam at this layer, the cathode of the battery is connected to the drainage cathode of the sub-dam at this layer, and there is a remotely controllable power supply switch between the anode of the battery and the drainage anode.

[0016] Preferably, the power switch is connected to an online monitoring system of the tailings pond for remote control.

[0017] Preferably, a flow meter is provided at the connection between the secondary drainage pipe and the main drainage pipe of each sub-dam.

[0018] Preferably, the secondary drainage pipes are distributed in the horizontal direction, and the main drainage pipes are distributed in the vertical direction. The secondary drainage pipes are connected to the main drainage pipes, and the connection points are connected by hot-melt means.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention adopts an electric method to construct a tailings drainage system. The main drainage power of the tailings drainage system comes from the DC electric field applied to the tailings, which improves the permeability of the tailings and thus improves the working efficiency of the tailings drainage system.

[0021] 2. The present invention can monitor the drainage volume in real time and adjust the power supply according to the drainage volume data to reduce energy consumption. Compared with the passive drainage of traditional drainage systems, it can realize real-time monitoring and control of the drainage process. Compared with traditional drainage systems, the drainage system can be connected to the tailings pond monitoring platform to facilitate the management of the tailings pond during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0023] Figure 2 This is a distribution diagram of the drainage cathode, secondary drainage pipe and main drainage pipe of the present invention;

[0024] Figure 3 This is a schematic structural diagram of the drainage cathode of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the seepage drainage pipe of the present invention;

[0026] Figure 5 This is a schematic diagram of the layout of the electric drainage system for the tailings pond of the present invention.

[0027] In the figure: 1. Drainage electrode; 2. Power supply system; 3. Drainage pipe; 4. Drainage mat; 31. Plastic pipe; 32. Power supply wire; 33. Graphite carbon felt; 34. Flower pipe section; 5. Dam surface drainage pipe system; 6. Sub-dam; 7. Tailings pond dam; 8. Secondary drainage pipe; 9. Main drainage pipe. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] like Figures 1 to 5 As shown, it includes a drainage electrode 1, a power supply system 2, a tailings pond online monitoring system, a tailings pond accumulation dam 7 and a dam surface drainage pipe system 5. The dam surface drainage pipe system 5 includes a secondary drainage pipe 8 and a main drainage pipe 9. The secondary drainage pipe 8 is connected to the drainage cathode. The secondary drainage pipes 8 are distributed in the horizontal direction and are located on both sides of the main drainage pipe 9. The main drainage pipe 9 is distributed in the vertical direction. The secondary drainage pipes 8 are connected to the main drainage pipe 9 and the connection is connected by hot melting.

[0030] Among them, the tailings pond dam 7 includes multiple sub-dams 6, and the tailings pond dam 7 is formed by the sub-dams 6 stacked in a stepped shape. A flow meter is installed at the connection between the secondary drainage pipe 8 and the main drainage pipe 9 of each layer of sub-dams 6. The flow meter is used to monitor the electroosmosis drainage volume. The data measured by the flow meter is wirelessly uploaded to the tailings online pond monitoring system, which has real-time monitoring function.

[0031] The drainage electrode 1 includes a drainage anode and a drainage cathode. Both the drainage anode and the drainage cathode include a drainage pipe 3 and a drainage mat 4. The drainage pipe 3 is clamped on the drainage mat 4, and the drainage mat 4 is located at the bottom of the sub-dam 6.

[0032] The drainage anode and the drainage cathode are distributed at the bottom of the sub-dam 6, and are parallel to each other up and down. The drainage anode and the drainage cathode have a slope of 2-4% toward the dam surface of the sub-dam 6.

[0033] The drainage pipe 3 includes a plastic pipe 31, a power supply wire 32, and a flower tube section 34. The flower tube section 34 is fixed to one end of the plastic pipe 31. The other end of the plastic pipe 31 is connected to the secondary drainage pipe 8. The power supply wire 32 is parallel to and fits on the outside of the plastic pipe 31. The length of the drainage mat 4 is consistent with the length of the flower tube section 34. The power supply wire 32 is located above the drainage mat 4 and does not contact the drainage mat 4. The surface of the flower tube section 34 is distributed with holes.

[0034] Graphite carbon felt 33 is also wrapped around the outside of the flower tube section 34. The graphite carbon felt 33 and the flower tube section 34 are bonded together with glue. The portion of the power supply conductor 32 located in the flower tube section 34 is a metal wire with its outer skin peeled off. The metal wire with its outer skin peeled off is in direct contact with the graphite carbon felt 33. The length of the flower tube section 34 is set according to the drainage requirements of the tailings pond. The flower tube section 34 is wrapped and protected by the graphite carbon felt 33. The graphite carbon felt 33 has the functions of conducting electricity and filtering tailings particles, and also has corrosion resistance.

[0035] The above-mentioned power supply system 2 includes solar panels, batteries and power switches. The anode of the battery is connected to the drainage anode of the sub-dam 6 of this layer, and the cathode of the battery is connected to the drainage cathode of the sub-dam 6 of this layer. There is a remotely controllable power switch between the anode of the battery and the drainage anode. The power switch is connected to the tailings pond online monitoring system for remote control. After power is turned on, the internal water forms an electroosmotic flow from top to bottom under the action of the DC electric field. The above-mentioned tailings pond online monitoring system includes a main control unit, an industrial CCD camera, a flow sensor unit and a liquid level sensor unit.

[0036] The intersection of the drainage pipe 3 and the current infiltration line is the starting section of the flower pipe section 34. The length of the flower pipe section 34 is set according to the lowering requirement of the infiltration line. The layout density of the drainage pipe 3 (the left and right spacing of the drainage pipes in the same layer) is usually 0.5-1m.

[0037] In a single sub-dam 6, the distance between the drainage anode and the drainage cathode should not exceed 30 cm. The optimal value of the electroosmotic potential gradient is 1.2 V / cm. When it exceeds 30 cm, the voltage will exceed the safety voltage of the human body, posing a safety hazard. The power supply system 2 is arranged in the inner sub-dam 6, and a power supply system 2 is arranged every 5-10 m in each layer of the sub-dam 6.

[0038] Working principle: When the tailings are discharged from the tailings pond, the tailings seep downward from the uppermost sub-dam 6. During this process, the power switch is turned on. When the power switch is turned on, the current inside the battery flows to the drainage anode. The current reaching the drainage anode is transmitted by the liquid inside the sub-dam 6 and transported to the drainage cathode. The current forms a current loop and an electric field between the drainage anode and the drainage cathode. At the bottom of the sub-dam 6, the water inside the sub-dam 6 and seeping downward flows from the drainage anode to the drainage cathode under the influence of the DC electric field. The water When it reaches the drainage cathode, the graphite carbon felt 33 isolates the sediment, and the water passes through the graphite carbon felt 33 and enters the interior of the flower tube section 34. The water flows into the interior of the plastic pipe 31 through the flower tube section 34, and flows into the secondary drainage pipe 8 through the plastic pipe 31, and finally flows into the main drainage pipe 9 through the secondary drainage pipe 8 and is discharged from the interior of the main drainage pipe 9. The electroosmosis drainage volume is monitored by the flow meter data. When the drainage volume of a certain layer of sub-dam 6 or accumulation dam 7 is too low, the power supply can be turned off to save energy until the tailings dam monitoring system measures that the infiltration line has risen again, and then the power supply is turned on again.

[0039] This embodiment takes the valley-type tailings pond as an example, and the other mountainside-type, flatland-type, and river-blocking-type tailings ponds can be used as a reference.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A novel electric drainage system for a tailings pond, comprising drainage electrodes (1), a power supply system (2), an online monitoring system for a tailings pond, a tailings pond dam (7), and a dam surface drainage pipe system (5), characterized in that: The tailings dam (7) includes a plurality of sub-dams (6); The drainage electrode (1) comprises a drainage anode and a drainage cathode; The drainage anode and the drainage cathode both comprise a drainage pipe (3) and a drainage mat (4); the drainage pipe (3) is clamped on the drainage mat (4); and the drainage mat (4) is located at the bottom of the sub-dam (6); The power supply system (2) includes a solar panel, a battery and a power switch; The dam surface drainage pipe system (5) comprises a secondary drainage pipe (8) and a main drainage pipe (9), and the secondary drainage pipe (8) is connected to the drainage cathode.

2. A new electric drainage system for tailings pond according to claim 1, characterized in that: The drainage pipe (3) comprises a plastic pipe (31), a power supply wire (32) and a flower pipe section (34); the flower pipe section (34) is fixed to one end of the plastic pipe (31); and the other end of the plastic pipe (31) is connected to the secondary drainage pipe (8).

3. A new electric drainage system for tailings pond according to claim 2, characterized in that: The power supply wire (32) is parallel to and fits on the outside of the plastic pipe (31), and the length of the drainage mat (4) is consistent with the length of the flower pipe section (34).

4. A new electric drainage system for tailings pond according to claim 3, characterized in that: The outer side of the flower tube section (34) is wrapped with graphite carbon felt (33), and the graphite carbon felt (33) and the flower tube section (34) are bonded with glue. The portion of the power supply wire (32) located in the flower tube section (34) is a metal wire with its outer skin peeled off.

5. The novel electric drainage system for tailings pond according to claim 4 is characterized by: The metal wire of the power supply conductor (32) with its outer skin peeled off is in direct contact with the graphite carbon felt (33). The length of the flower pipe section (34) is set according to the drainage requirements of the tailings pond. The intersection of the drainage pipe (3) and the current infiltration line is the starting section of the flower pipe section (34). The length of the flower pipe section (34) is set according to the reduction requirements of the infiltration line.

6. The novel electric drainage system for tailings pond according to claim 1, characterized in that: The drainage anode and drainage cathode are distributed at the bottom of the sub-dam (6), and the drainage anode and drainage cathode are distributed in parallel up and down, the distance between the drainage anode and drainage cathode is no more than 30cm, and the drainage anode and drainage cathode present a slope of 2-4% toward the dam surface of the sub-dam (6).

7. The novel electric drainage system for tailings pond according to claim 6, characterized in that: The anode of the battery is connected to the drainage anode of the sub-dam (6) of this layer, and the cathode of the battery is connected to the drainage cathode of the sub-dam (6) of this layer. A remotely controllable power supply switch is provided between the anode of the battery and the drainage anode.

8. The novel electric drainage system for tailings pond according to claim 7, characterized in that: The power switch is connected to the tailings pond online monitoring system for remote control.

9. The novel electric drainage system for tailings pond according to claim 1, characterized in that: A flow meter is provided at the connection between the secondary drainage pipe (8) and the main drainage pipe (9) of each sub-dam (6).

10. The novel electric drainage system for tailings pond according to claim 9, characterized in that: The secondary drainage pipe (8) is distributed in the horizontal direction, and the main drainage pipe (9) is distributed in the vertical direction. The secondary drainage pipe (8) is connected to the main drainage pipe (9) and the connection is connected by hot melting.

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