CN220225601U - Seepage drainage device for seepage drainage well of tailing pond - Google Patents

Abstract

The utility model relates to a seepage drainage device for a seepage drainage well of a tailing pond. The inner sleeve is internally provided with an inner sleeve with an open lower end and an open upper end, and the outer wall of the inner sleeve is provided with a plurality of groups of inner sleeve permeation holes in the axial direction, and the outer diameter of the inner sleeve is equal to the inner diameter of the outer sleeve; a wellhead air pipe and a seepage drainage pipe are arranged on a sealing plate at the upper end of the inner sleeve, and the lower end of the seepage drainage pipe extends to the bottom of an inner cavity of the inner sleeve; the wellhead is also provided with a jacking cylinder, and the jacking cylinder drives the inner sleeve to lift so as to align or stagger the outer pipe seepage holes and the inner pipe seepage holes of each group; the well head trachea is connected with the air pump and the air supply assembly, and the jacking cylinder is connected with the air supply assembly. The utility model can prevent the seepage from flowing back in the pressurizing seepage-discharging link, and can maintain the seepage-collecting and seepage-discharging efficiency in the continuous seepage-discharging operation.

Description

Seepage drainage device for seepage drainage well of tailing pond

Technical Field

The utility model belongs to the technical field of seepage drainage devices, and particularly relates to a seepage drainage device for a seepage drainage well of a tailing pond.

Background

The tailing pond refers to a place which is formed by a dam for intercepting a valley or surrounding land and is used for piling up metal or nonmetal mines and discharging tailings or other industrial waste residues after ore sorting. By arranging the seepage drainage well and the seepage drainage system on the tailing pond dam, seepage drainage can be promoted, seepage drainage facilities are arranged in the tailing pond dam, seepage lines can be effectively reduced, drainage consolidation of tailing mud is facilitated, and stability of the dam body is enhanced.

In order to promote the collection of surrounding soil layers into the seepage drainage well, the existing seepage drainage system adopts an air extraction and decompression treatment mode, and after a certain amount of seepage is collected in the seepage drainage well, the seepage is forced to rise through a seepage drainage pipe to be drained out of the well by a mode of pressurizing the seepage into the well. The existing drainage device has the following problems: in the stage of air extraction and decompression, the seepage liquid in the soil layer around the seepage drainage well is collected into the seepage drainage well under the action of negative pressure, in the stage of pressure boosting and seepage drainage, the high-pressure environment established in the well can force the seepage liquid in the soil layer to flow back, and in the stage of air extraction and decompression of the next cycle, the collection flow of the seepage liquid to the seepage drainage well is required to be reestablished, so that the efficiency of seepage liquid collection and seepage drainage is definitely reduced.

In summary, a new drainage device is required to be developed and designed to solve the above technical problems.

Disclosure of Invention

The utility model provides a seepage drainage device for a tailing pond seepage drainage well, which is reasonable in structural design and is used for avoiding backflow of seepage in a pressurizing seepage drainage link, so that seepage collection and seepage drainage efficiency are maintained in continuous seepage drainage operation.

The utility model adopts the technical proposal for solving the technical problems in the prior art that: the seepage drainage device for the seepage drainage well of the tailing pond comprises an outer sleeve which is arranged in the seepage drainage well, is sealed at the bottom end and is open at the top end, a plurality of groups of outer pipe seepage holes are formed in the outer wall of the outer sleeve along the axial direction, an inner sleeve with an open lower end and a sealed upper end is arranged in the outer sleeve, a plurality of groups of inner pipe seepage holes are formed in the outer wall of the inner sleeve along the axial direction, and the outer diameter of the inner sleeve is equal to the inner diameter of the outer sleeve; a wellhead air pipe and a seepage drainage pipe are arranged on a sealing plate at the upper end of the inner sleeve, and the lower end of the seepage drainage pipe extends to the bottom of an inner cavity of the inner sleeve; the wellhead is also provided with a jacking cylinder, and the jacking cylinder drives the inner sleeve to lift so as to align or stagger the outer pipe seepage holes and the inner pipe seepage holes of each group; the well head trachea is connected with the air extractor and the air supply assembly through the pipeline assembly, and the jacking cylinder is connected with the air supply assembly through the pipeline assembly.

Preferably: the outer tube permeation holes of each group on the outer tube are arranged at equal intervals along the axial direction, and the inner tube permeation holes of each group on the inner tube are arranged at equal intervals along the axial direction and have equal intervals with the outer tube permeation holes; each group of outer pipe seepage holes and each group of inner pipe seepage holes respectively comprise a plurality of seepage holes, and the seepage holes are arranged at equal angular intervals along the circumferential direction.

Preferably: the lower end of the seepage drainage pipe is provided with a filter screen.

Preferably: the well head control box comprises a box body, a first pneumatic electromagnetic valve, a second pneumatic electromagnetic valve and a pressure regulating valve which are arranged in the box body, and two air outlets of the pressure regulating valve are respectively connected with air inlets of the first pneumatic electromagnetic valve and the second pneumatic electromagnetic valve; the air supply assembly is connected to an air inlet port of the pressure regulating valve through a pipeline, the air supply port of the first pneumatic electromagnetic valve is connected with a wellhead air pipe through a pipeline and is provided with an electromagnetic valve, the air supply port of the second pneumatic electromagnetic valve is connected with the jacking air cylinder through a pipeline and is provided with an electromagnetic valve, and the air extractor is connected to an air exhaust port of the first pneumatic electromagnetic valve through a pipeline.

Preferably: the air supply assembly comprises an air source filter, an air compressor and an air storage tank, wherein an outlet of the air source filter is connected to an inlet of the air compressor, and an outlet of the air compressor is connected to an inlet of the air storage tank.

The utility model has the advantages and positive effects that:

compared with the existing drainage device, the drainage device has the advantages that through arranging the inner sleeve pipe with the inner pipe seepage holes and the outer sleeve pipe with the outer pipe seepage holes, the drainage device has the technical effects that the inner sleeve pipe is lifted to align or stagger the outer pipe seepage holes and the inner pipe seepage holes, the outer pipe seepage holes and the inner pipe seepage holes of the groups are aligned in the air suction and decompression stage, channels for transferring seepage liquid from surrounding soil layers to the outer sleeve pipe can be established, the outer pipe seepage holes and the inner pipe seepage holes of the groups are staggered in the pressurization drainage stage, and the channels are closed, so that the drainage system in the utility model can avoid backflow of seepage liquid in soil layers in the pressurization drainage stage, and maintain seepage liquid collection and drainage efficiency in continuous drainage operation.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a partial structure of the present utility model;

fig. 3 is a schematic view of the wellhead control cartridge of fig. 1.

In the figure:

1. a filter screen; 2. a seepage drainage well; 3. an outer sleeve; 3-1, outer tube infiltration holes; 4. an inner sleeve; 4-1, inner pipe infiltration holes; 5. a seepage-removing pipe; 6. jacking the air cylinder; 7. a wellhead air pipe; 8. an air extractor; 9. a wellhead control box; 9-1, a box body; 9-2, an exhaust interface; 9-3, a first pneumatic solenoid valve; 9-4, an air supply interface; 9-5, a second pneumatic electromagnetic valve; 9-6, a pressure regulating valve; 9-7, an air inlet interface; 10. and an air supply assembly.

Detailed Description

In order to further understand the summary, features and advantages of the present utility model, the following examples are set forth in detail.

Referring to fig. 1 and 2, the drainage device for a tailing pond drainage well of the present utility model comprises an outer sleeve 3 installed inside a drainage well 2, with a sealed bottom end and an open top end, wherein a plurality of groups of outer pipe seepage holes 3-1 are provided on the outer wall of the outer sleeve 3 along the axial direction, an inner sleeve 4 with an open bottom end and a sealed upper end is provided inside the outer sleeve 3, a plurality of groups of inner pipe seepage holes 4-1 are provided on the outer wall of the inner sleeve 4 along the axial direction, and the outer diameter of the inner sleeve 4 is equal to the inner diameter of the outer sleeve 3.

As shown in the figure, the outer diameter of the outer casing 3 is equal to the inner diameter of the drainage well 2. The outer sleeve 3 is a fixed sleeve and is arranged in the arranged seepage drainage well 2 and is fixed, the inner sleeve 4 can be used for lifting control, through controlling the lifting action of the inner sleeve 4, each group of outer pipe seepage holes 3-1 and inner pipe seepage holes 4-1 are aligned or staggered, when the outer pipe seepage holes 3-1 and the inner pipe seepage holes 4-1 are aligned, a channel for transferring seepage liquid to the outer sleeve 3 is established, when the outer pipe seepage holes 3-1 and the inner pipe seepage holes 4-1 are staggered, the channel for transferring seepage liquid to the outer sleeve 3 is closed, when the pressure boosting seepage drainage stage is carried out, the high-pressure environment built inside can not act on soil layers around the seepage drainage well 2, and backflow of seepage liquid in soil layers can be avoided.

In the embodiment, each group of outer pipe permeation holes 3-1 on the outer sleeve 3 are arranged at equal intervals along the axial direction, and each group of inner pipe permeation holes 4-1 on the inner sleeve 4 are arranged at equal intervals along the axial direction and have equal intervals with the outer pipe permeation holes 3-1; each set of outer tube permeation holes 3-1 and each set of inner tube permeation holes 4-1 respectively comprise a plurality of permeation holes, and the permeation holes are arranged at equal angular intervals along the circumferential direction. The pore diameters of the outer pipe permeation hole 3-1 and the inner pipe permeation hole 4-1 can be equal, or the pore diameter of the inner pipe permeation hole 4-1 is slightly larger than the pore diameter of the outer pipe permeation hole 3-1.

And a jacking air cylinder 6 is also arranged at the wellhead, and the jacking air cylinder 6 drives the inner sleeve 4 to lift so as to align or stagger the outer pipe seepage holes 3-1 and the inner pipe seepage holes 4-1 of each group. In order to ensure sufficient driving force, a plurality of jacking cylinders 6 are arranged along the circumferential direction, as shown in the figure, a lower annular wing plate is arranged outside the top end of the outer sleeve 3, an upper annular wing plate is arranged outside the top end of the inner sleeve 4, and each jacking cylinder 6 is arranged between the upper annular wing plate and the lower annular wing plate at equal angular intervals in the circumferential direction.

A wellhead air pipe 7 and a seepage drainage pipe 5 are arranged on a sealing plate at the upper end of the inner sleeve 4, and the lower end of the seepage drainage pipe 5 extends to the bottom of the inner cavity of the inner sleeve 4. The seepage drainage pipe 5 is used for draining seepage liquid collected in the well to the outside of the well under the internal pressurizing state, and in the embodiment, the filter screen 1 is arranged at the lower end of the seepage drainage pipe 5, so that the problem of blockage caused by the fact that particles in seepage liquid enter the seepage drainage pipe 5 is avoided. An electromagnetic valve is arranged at the upper end of the seepage drainage pipe 5, and the seepage drainage pipe 5 is sealed in the stage of air extraction and decompression. A conveying hose can be connected to the upper end of the seepage drainage pipe 5 to guide seepage outside the drainage well to subsequent treatment facilities. The wellhead air pipe 7 is used for air suction decompression and air injection pressurization.

The well head air pipe 7 is connected with the air extractor 8 and the air supply assembly 10 through the pipeline assembly, and each jacking air cylinder 6 is connected with the air supply assembly 10 through the pipeline assembly. By establishing different air path connections, the running state of the drainage device is adjusted: when the connection between the air extractor 8 and the wellhead air pipe 7 is established, the air extraction and decompression state is adopted, at the moment, the outer pipe seepage hole 3-1 and the inner pipe seepage hole 4-1 are aligned to establish a channel, the air extraction and decompression lasts for a certain time, and seepage liquid in the soil layer around the drainage seepage well 2 enters the outer sleeve 3 through the channel and is collected at the bottom of the inner cavity; when the jacking air cylinders 6 are connected with the air supply assembly 10, the action of the jacking air cylinders 6 can be controlled, and then the lifting of the inner sleeve 4 is controlled; when the connection between the air supply assembly 10 and the wellhead air pipe 7 is established, the pressure boost seepage state is established, at this time, the outer pipe seepage hole 3-1 and the inner pipe seepage hole 4-1 should be staggered to seal the channels, the high-pressure air source is injected into the well to boost the pressure inside, and seepage liquid collected at the bottom enters the seepage drainage pipe 5 under the action of air pressure and finally is discharged out of the well.

The well head control box 9 is further included, and the well head control box 9 is connected with the pipeline assembly to achieve fine control.

Referring to fig. 3, it can be seen that:

the wellhead control box 9 comprises a box body 9-1, a first pneumatic electromagnetic valve 9-3, a second pneumatic electromagnetic valve 9-5 and a pressure regulating valve 9-6 which are arranged in the box body 9-1, wherein the pressure regulating valve 9-6 is used for regulating air source pressure, and the first pneumatic electromagnetic valve 9-3 and the second pneumatic electromagnetic valve 9-5 are used for realizing air path control. The first pneumatic electromagnetic valve 9-3 and the second pneumatic electromagnetic valve 9-5 have the same structure and comprise a valve body, an air inlet, an air supply interface 9-4 and an exhaust interface 9-2, a compressed air source enters through the air inlet, and through controlling the valve core to shift, the air inlet and the air supply interface 9-4 can be conducted or the air supply interface 9-4 and the exhaust interface 9-2 can be conducted, the former conduction state corresponds to a state of outputting an air supply source outwards, and the latter state corresponds to a state of exhausting.

The two air outlets of the pressure regulating valve 9-6 are respectively connected with the air inlets of the first pneumatic electromagnetic valve 9-3 and the second pneumatic electromagnetic valve 9-5, the air supply assembly 10 is connected to the air inlet port 9-7 of the pressure regulating valve 9-6 through a pipeline, the air supply port 9-4 of the first pneumatic electromagnetic valve 9-3 is connected with the wellhead air pipe 7 through a pipeline and is provided with an electromagnetic valve on the air pipe, the air supply port 9-4 of the second pneumatic electromagnetic valve 9-5 is connected with the jacking air cylinder 6 through a pipeline and is provided with an electromagnetic valve on the air pipe, and the air extractor 8 is connected to the air exhaust port 9-2 of the first pneumatic electromagnetic valve 9-3 through a pipeline.

In this embodiment, the air supply assembly 10 includes an air source filter, an air compressor, and an air tank, wherein an outlet of the air source filter is connected to an inlet of the air compressor, and an outlet of the air compressor is connected to an inlet of the air tank. The air source filter is used for filtering dust impurities in the air source, improving the quality of the air source, the air compressor is used for generating compressed air, and the air storage tank is used for storing the compressed air.

The working process comprises the following steps:

in the initial state, the second pneumatic electromagnetic valve 9-5 acts, the air supply assembly 10 conveys the compressed air source to each jacking cylinder 6, the inner sleeve 4 rises to the high position, at this time, the outer pipe seepage hole 3-1 is aligned with the inner pipe seepage hole 4-1, the seepage channel is established, the electromagnetic valve on the seepage drainage pipe 5 is closed, the first pneumatic electromagnetic valve 9-3 acts, the air extractor 8 is connected with the wellhead air pipe 7, the air extractor 8 operates to pump and decompress the well and maintain for a certain time, the air in the well is discharged through the passage of the wellhead air pipe 7, the first pneumatic electromagnetic valve 9-3 and the air extractor 8, and at this stage, seepage liquid in soil layers around the seepage drainage well 2 enters the inner part of the outer sleeve 3 through the established channel and is gathered at the bottom of the inner cavity;

after a certain time, the air extractor 8 stops running, the second pneumatic electromagnetic valve 9-5 acts to establish an exhaust channel, the compressed air source in each jacking cylinder 6 is exhausted outwards through the established exhaust channel, the piston rod is retracted, the inner sleeve 4 and accessory parts thereof correspondingly descend to a low position under the action of gravity, at the moment, the outer pipe seepage holes 3-1 and the inner pipe seepage holes 4-1 are staggered, the seepage channel is closed, the electromagnetic valve on the seepage pipe 5 is opened, then a channel between the air supply assembly 10 and the wellhead air pipe 7 is established, the compressed air source is injected into a well, the pressure is increased in the well, and seepage collected at the bottom of the well is lifted through the seepage pipe 5 under the action of air pressure and finally discharged out of the well; and repeating the working process to realize continuous air extraction, decompression and seepage collection and pressurization and seepage discharge operation.

Claims (5)

1. A row of ooze device that is used for tailing storehouse to arrange ooze well, characterized by: the inner sleeve comprises an outer sleeve (3) which is arranged inside a seepage drainage well (2) and is sealed at the bottom end and is open at the top end, a plurality of groups of outer pipe seepage holes (3-1) are formed in the outer wall of the outer sleeve (3) along the axial direction, an inner sleeve (4) with an open lower end and a sealed upper end is arranged inside the outer sleeve (3), a plurality of groups of inner pipe seepage holes (4-1) are formed in the outer wall of the inner sleeve (4) along the axial direction, and the outer diameter of the inner sleeve (4) is equal to the inner diameter of the outer sleeve (3); a wellhead air pipe (7) and a seepage drainage pipe (5) are arranged on a sealing plate at the upper end of the inner sleeve (4), and the lower end of the seepage drainage pipe (5) extends to the bottom of an inner cavity of the inner sleeve (4); a jacking air cylinder (6) is also arranged at the wellhead, and the jacking air cylinder (6) drives the inner sleeve (4) to perform lifting movement to align or stagger the outer pipe seepage holes (3-1) and the inner pipe seepage holes (4-1) of each group; the gas pump further comprises an air pump (8), a gas supply assembly (10) and a pipeline assembly, wherein the wellhead gas pipe (7) is connected with the air pump (8) and the gas supply assembly (10) through the pipeline assembly, and the jacking cylinder (6) is connected with the gas supply assembly (10) through the pipeline assembly.

2. The drainage device for a tailing pond drainage well as claimed in claim 1, wherein: the outer tube permeation holes (3-1) of each group on the outer tube (3) are arranged at equal intervals along the axial direction, the inner tube permeation holes (4-1) of each group on the inner tube (4) are arranged at equal intervals along the axial direction, and the intervals are equal to the intervals of the outer tube permeation holes (3-1); each group of outer pipe permeation holes (3-1) and each group of inner pipe permeation holes (4-1) respectively comprise a plurality of permeation holes, and the permeation holes are arranged at equal angular intervals along the circumferential direction.

3. The drainage device for a tailing pond drainage well as claimed in claim 2, wherein: the lower end of the seepage drainage pipe (5) is provided with a filter screen (1).

4. A drainage device for a tailings pond drainage well as claimed in claim 3, wherein: the well head control box (9) comprises a box body (9-1), a first pneumatic electromagnetic valve (9-3), a second pneumatic electromagnetic valve (9-5) and a pressure regulating valve (9-6) which are arranged in the box body (9-1), and two air outlets of the pressure regulating valve (9-6) are respectively connected with air inlets of the first pneumatic electromagnetic valve (9-3) and the second pneumatic electromagnetic valve (9-5); the air supply assembly (10) is connected to an air inlet port (9-7) of the pressure regulating valve (9-6) through a pipeline, an air supply port (9-4) of the first pneumatic electromagnetic valve (9-3) is connected with a wellhead air pipe (7) through a pipeline and is provided with an electromagnetic valve on the air pipe, an air supply port (9-4) of the second pneumatic electromagnetic valve (9-5) is connected with the jacking air cylinder (6) through a pipeline and is provided with an electromagnetic valve on the air pipe, and the air extractor (8) is connected to an air exhaust port (9-2) of the first pneumatic electromagnetic valve (9-3) through a pipeline.

5. The drainage device for a tailing pond drainage well as claimed in claim 4, wherein: the air supply assembly (10) comprises an air source filter, an air compressor and an air storage tank, wherein an outlet of the air source filter is connected to an inlet of the air compressor, and an outlet of the air compressor is connected to an inlet of the air storage tank.