Pipeline type water filtering system for stoping water-containing tailings

Abstract

The utility model discloses a pipeline type water filtering system for stoping water-containing tailings, which comprises a plurality of groups of drainage pipes which are matched for use, the drainage pipes are respectively arranged on a slope surface of a drainage platform which is distributed in a step mode in a stoping area, and the stoping area is divided into stoping subareas according to the particle size and the water content condition of the tailings. The steps of the subarea needing drainage are sequentially arranged into a recovery platform and a drainage platform at intervals, the seepage drainage pipe comprises a conical head section and a seepage drainage pipe section, the seepage drainage pipe is fixedly connected with the conical head section in a threaded mode, a plurality of seepage drainage holes are formed in the upper half portion of the seepage drainage pipe, and the outer surface of the seepage drainage pipe is wrapped with geotechnical cloth. The seepage drainage pipes are obliquely mounted on the slope surface of the drainage platform respectively, and the inclination direction of the seepage drainage pipes is upward from the seepage drainage pipe sections to the conical head sections. The mining platform is reasonable in structural design, aiming at tailings with overhigh water content, a water filtering system is arranged in a mining area in advance, water contained in the tailings is drained through the seepage drainage pipe, seeping water is introduced into the water collecting tank through the U-shaped water guide plate for centralized treatment, and the water in the mining platform is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tailings drainage, in particular to a pipeline type water filtering system for recovering water-containing tailings. Background Art

[0002] With the rapid development of mineral processing technology in my country, more and more mines have begun to turn their attention to the large amount of tailings produced in the past. By re-analyzing and extracting the useful components in the tailings resources, the valuable elements in the tailings are obtained to the maximum extent, which not only realizes the recycling of resources, but also solves the risk of tailings dam breach.

[0003] After the tailings are discharged into the tailings pond, they settle naturally under the influence of gravity. Due to their small particle size and water content, they eventually form tailings piles with a certain slope and particle size classification. The tailings deposited in front of the pond are generally mainly coarse-grained tailings with less water content. The closer to the tail of the pond, the smaller the tailings particle size, the more water content, and the worse the seepage effect. The sedimentary beach formed in the low-lying area at the tail of the pond is mainly fine-grained tailings, which are generally silty due to excessive water content.

[0004] The main methods of tailings recovery are dry recovery, wet recovery, ship recovery and the combination of the above methods. Dry recovery generally uses an excavator plus a car transportation system. The recovery order is from the tail of the reservoir to the front of the dam. The recovery zone is divided according to the tailings particle size and water content, and each zone is mined from top to bottom. As the recovery height decreases, the water content of the tailings gradually increases. The traditional drainage method mainly relies on interception and drainage ditch seepage and water pumping. This method has a good drainage effect on shallow coarse-grained tailings, but for fine-grained tailings containing clay, due to the stronger water retention of tailings, the traditional drainage method technology is more complicated and it is difficult to quickly drain the water in the tailings. At the same time, for the deep water-containing tailings on the inner side of the step, the drainage effect is not good, resulting in insufficient slope strength in the area with high water content. The operation of machinery and equipment during the recovery process is difficult, affecting the orderly development of the recovery operation. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects and shortcomings of the prior art and to provide a pipeline water filtration system for recovering water-containing tailings, so as to solve the problems that the water content of the tailings is too high, resulting in insufficient pressure-bearing strength of the platform and poor slope stability, and the combined drainage effect of traditional interception and drainage ditches and water pumps is poor and the construction process is complicated. It is impossible to quickly drain the water from the fine-grained tailings at the tail and bottom of the reservoir with poor permeability, which affects the normal excavation and transportation of dry mining.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pipeline water filtration system for recovering water-containing tailings comprises a plurality of sets of drainage pipes used in combination, the drainage pipes are respectively installed on the slope of a drainage platform distributed in steps in the recovery area, the recovery area is divided into recovery zones according to the tailings particle size and water content, each zone is divided into recovery steps according to the slope from the top of the slope downward at a certain height, and for the zones requiring drainage, each step is sequentially arranged as a recovery platform and a drainage platform at intervals, the drainage pipe comprises a cone head section and a drainage pipe section, the drainage pipe is threadedly connected and fixed to the cone head section, a plurality of drainage holes are provided on the upper half of the drainage pipe, the outer surface of the drainage pipe is wrapped with a geotextile, and the drainage pipes are respectively installed in an inclined manner on the slope of the drainage platform, and the inclination direction is upward from the drainage pipe section to the cone head section.

[0008] The front end of the cone head of the cone head section is a hexagonal pyramid, the middle is a hexagonal column, and the rear end is a stud.

[0009] The seepage drainage pipe is composed of one or more sections of pipe bodies connected together. One end of the pipe body is provided with an internal thread, and the other end is provided with an external thread. The pipe bodies are connected to each other through the internal and external threads.

[0010] When multiple drainage pipes are connected, the side with the drainage holes is all controlled in the upper half of the pipe body.

[0011] The seepage drainage pipe is installed on the slope of the drainage platform with an upward inclination of 2°-5°.

[0012] A U-shaped drainage ditch is excavated at the bottom of the drainage platform slope, and the slope of the ditch is consistent with the slope of the platform.

[0013] The U-shaped drainage ditch has a depth of 50 cm and a width of 40 cm. U-shaped water guide plates are sequentially arranged along the slope of the drainage ditch. The U-shaped water guide plates are used to collect water collected in the drainage pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model has a reasonable structural design. For tailings with too high water content, a water filtration system is pre-installed in the mining area to discharge the water contained in the tailings through the seepage pipe, and the seepage water is introduced into the water collection pool for centralized treatment through the U-shaped water guide plate, which significantly reduces the water content in the mining platform.

[0016] At the same time, the drainage system installed on the slope of the drainage platform increases the slope stability and platform strength. Since the drainage depth and the installation form of the water filtration system can be flexibly adjusted, it can be applied to the recovery of tailings with different water contents.

[0017] The structure of the drainage pipe is reasonably designed, and the front cone section is convenient for installation, insertion and fixation. The drainage pipe section is assembled in multiple sections, and can be assembled to corresponding specifications according to the length requirements of the drainage platform in the mining area. And through the distribution design of drainage holes, the water is filtered and infiltrated by the geotextile. The lower half of the drainage pipe has no holes, and the lower half of the steel pipe is used as a water guide pipe to remove the seepage water in the pipe.

[0018] Therefore, the pipeline water filtration system of the utility model also has great application prospects for the prevention and control of water on slopes with high water content. At the same time, the equipment of the system also has the advantages of simple manufacturing, low production cost, durability, simple construction process, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the structural schematic diagram of the seepage pipe;

[0020] Figure 2 A cross-sectional view of the step layout of the pipeline water filtration system before the zoned circulation recovery when in use;

[0021] Figure 3 This is the current profile of the bench after the first cycle of mining in the subarea;

[0022] Figure 4 This is the current cross-section diagram of the steps after the second cycle of mining in the partition.

[0023] Reference numerals:

[0024] 1. Drainage pipe; 2. Hexagonal pyramid; 3. Hexagonal column; 4. Stud; 5. Internal thread; 6. Drainage hole; 7. External thread; 8. Water guide pipe; 9. Mining platform; 10. Drainage platform; 11. U-shaped drainage ditch; 12. U-shaped water guide plate; 13. Mined tailings; 14. Geotextile. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See attached Figure 1-4A pipeline water filtration system for recovering water-containing tailings, comprising a plurality of sets of drainage pipes 1 used in conjunction with each other, the drainage pipes 1 being respectively installed on the slope of a drainage platform 10 distributed in steps in the recovery area, the recovery area being divided into recovery zones according to the tailings particle size and water content, and each zone being divided into recovery steps according to the slope from the top of the slope downward at a certain height, and each step being sequentially arranged as a recovery platform 9 and a drainage platform 10 for the zones requiring drainage, the drainage pipe comprising a cone head section and a drainage pipe section, the drainage pipe 1 being threadedly connected and fixed to the cone head section, a plurality of drainage holes 6 being provided on the upper half of the drainage pipe 1, the outer surface of the drainage pipe 1 being wrapped with a geotextile 14, the drainage pipes 1 being respectively installed in an inclined manner on the slope of the drainage platform 10, and the inclination direction being upward from the drainage pipe section to the cone head section.

[0027] Furthermore, the front end of the cone head of the cone head section is a hexagonal pyramid 2, the middle is a hexagonal column 3, and the rear end is a stud 4. The hexagonal pyramid of the cone head is 50mm high and the bottom side is 25mm long, the hexagonal column is 20mm high and the side is 25mm long, and the thread major diameter of the stud is 47.5mm, the minor diameter is 42.5mm, and the length is 30mm.

[0028] Furthermore, the drainage pipe 1 is composed of one or more sections of pipe bodies, one end of the pipe body is provided with an internal thread 5, and the other end is provided with an external thread 7, and the pipe bodies are connected to each other through internal and external threads. The front end cone head section is convenient for installation, insertion and fixing. The drainage pipe section adopts a multi-section assembly method, and can be assembled according to the length requirements of the drainage platform in the mining partition. The drainage pipe is 1-2m long, 40mm in inner diameter, and 50mm in outer diameter. The large diameter of the internal and external threads of the drainage pipe is 47.5mm, the small diameter is 42.5mm, and the thread length is 30mm. When multiple drainage pipes 1 are connected, the side with drainage holes 6 is all controlled in the upper half of the pipe body. The lower half of the drainage pipe is not perforated, and the lower half of the steel pipe is used as a water guide pipe 8 to remove the seepage water in the pipe; the drainage pipe 1 is installed on the slope of the drainage platform 10 with an upward tilt of 2°-5°.

[0029] Furthermore, the drainage holes 6 are staggered in the form of plum blossom piles, with a hole diameter of 10 mm and a hole spacing of 100 mm. And through the distribution design of the drainage holes, the geotextile is used to filter the convection water before infiltration.

[0030] Furthermore, a U-shaped drainage ditch 11 is excavated at the bottom of the drainage platform 10, and the slope of the U-shaped drainage ditch is consistent with the slope of the platform. The ditch of the U-shaped drainage ditch 11 is 50 cm deep and 40 cm wide. U-shaped water guide plates 12 are set up in sequence along the slope of the drainage ditch. The U-shaped water guide plates 12 are used to collect the water collected in the drainage pipe 1. The U-shaped water guide plates 12 are 30 cm high, 1-3 m long, and have a semicircular bottom with a diameter of 40 cm. The water contained in the tailings is discharged through the drainage pipe, and the seepage water is introduced into the water collection pool by the U-shaped water guide plate for centralized treatment, which significantly reduces the water content in the recovery platform.

[0031] When mining water-containing tailings, the above structure first divides the mining area into zones according to the tailings particle size and water content, and then divides each zone into mining steps at a height of about 2m from the top of the slope downward according to the slope. For the zones that need drainage, the steps are set in sequence as mining platforms and drainage platforms.

[0032] The step slope angle is determined according to the slope stability, and each platform is set with a drainage slope of 2%-5%, and the platform width meets the safety distance requirements. A "U"-shaped drainage ditch is excavated along the bottom of the drainage platform slope. The slope of the ditch is consistent with the slope of the platform. The ditch is 50cm deep and 40cm wide. "U"-shaped alloy water guide plates are set up in sequence along the slope of the drainage ditch. The water guide plates are 30cm high, 1-3m long, and have a semicircular bottom with a diameter of 40cm.

[0033] The installation density and depth of the above-mentioned pipeline water filtration system are determined according to the water content of the tailings in the mining area. Use a drill to pre-drill holes or push them in with mechanical force. Install the drainage pipe on the slope of the drainage platform with an upward tilt of 2°-5°. The water collected in the drainage pipe flows into the water guide plate from the drainage pipe port. Finally, the water from each platform is introduced into the collection pool for centralized treatment by the water guide plate.

[0034] When the tailings moisture content in the mining area meets the requirements of dry mining, the steps are numbered from bottom to top, such as Figure 2-4 As shown in , the recovery platform is mined first, and then the drainage platform is mined, and the recovery is carried out in a cycle in sequence.

[0035] During the first cycle of mining, the shovel and loader equipment is docked on the drainage platform. After the mining platform above the platform is excavated to the planned advance, a drainage pipe is installed on the slope. A "U"-shaped drainage ditch is excavated at the bottom of the slope of the mining platform and a water guide plate is set up to serve as the drainage platform for the second cycle.

[0036] The mining platform for the second cycle is the drainage platform for the first cycle. The mining for the second cycle is advanced horizontally along the direction of the mining platform approach, and the water guide plates and water filtration systems are removed along the mining progress.

[0037] After the second cycle of mining is completed, repeat the above steps of the first cycle, and gradually mine in the order of the above two cycles until all the water-containing tailings are mined.

[0038] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0039] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A pipeline water filtration system for recovering water-containing tailings, characterized in that: The invention comprises a plurality of sets of drainage pipes (1) for use together. The drainage pipes (1) are respectively installed on the slope of a drainage platform (10) distributed in steps in a mining area. The mining area is divided into mining zones according to the tailings particle size and water content. The mining steps are divided into mining steps at a certain height from the top of the slope downward according to the slope. For the zones that need drainage, the steps are sequentially arranged as mining platforms (9) and drainage platforms (10). The drainage pipes comprise a cone head section and a drainage pipe section. The drainage pipes (1) are threadedly connected and fixed to the cone head section. The upper half of the drainage pipes (1) is provided with a plurality of drainage holes (6). The outer surface of the drainage pipes (1) is wrapped with a geotextile (14). The drainage pipes (1) are respectively installed in an inclined manner on the slope of the drainage platform (10), and the inclination direction is upward from the drainage pipe section to the cone head section.

2. The pipeline water filtration system for recovering water-containing tailings according to claim 1 is characterized in that: The front end of the cone head of the cone head section is a hexagonal pyramid (2), the middle is a hexagonal column (3), and the rear end is a stud (4).

3. The pipeline water filtration system for recovering water-containing tailings according to claim 1 is characterized in that: The seepage drainage pipe (1) is composed of one or more pipe sections connected together, one end of the pipe body is provided with an internal thread, and the other end is provided with an external thread, and the pipe bodies are connected to each other via the internal and external threads.

4. The pipeline water filtration system for recovering water-containing tailings according to claim 3 is characterized in that: When a plurality of seepage drainage pipes (1) are connected, the side with the seepage drainage holes (6) is all controlled in the upper half of the pipe body.

5. The pipeline water filtration system for recovering water-containing tailings according to claim 1 is characterized in that: The seepage drainage pipe (1) is installed on the slope of the drainage platform (10) at an upward inclination of 2°-5°.

6. The pipeline water filtration system for recovering water-containing tailings according to claim 1 is characterized in that: A U-shaped drainage ditch (11) is excavated at the bottom of the slope of the drainage platform (10), and the slope of the U-shaped drainage ditch is consistent with the slope of the platform.

7. The pipeline water filtration system for recovering water-containing tailings according to claim 6 is characterized in that: The U-shaped drainage ditch (11) has a depth of 50 cm and a width of 40 cm. U-shaped water guide plates (12) are arranged in sequence along the slope of the drainage ditch. The U-shaped water guide plates (12) are used to collect water collected in the drainage pipe (1).

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