Open-air tailing drainage system

Abstract

The utility model provides an open-air tailing drainage system. Seepage wells are uniformly distributed on a tailing pile, and the lower ends of the seepage wells extend to the bottom of the tailing pile; the seepage pipe extends into the bottom of the seepage well in the axial direction, the space between the seepage well and the seepage pipe is filled with gravel, a well opening of the seepage well is sealed through tamped clay, and seepage openings which are evenly distributed are formed in the lower middle portion of the outer wall of the seepage pipe; the lower end of the suction pipe extends from the orifice of the seepage pipe, and the upper end of the suction pipe extends out of the seepage pipe and then is connected with a suction pump; the sealing cover is arranged at the upper end of the seepage pipe, a first through hole corresponding to the suction pipe is formed in the sealing cover, and a second through hole corresponding to the ventilation pipe is further formed in the sealing cover. A plurality of seepage wells are distributed on the tailings, and underground water in the tailings is collected through the seepage wells, so that the underground water in the tailings is drained and guided in rainy seasons, and the geological problem caused by more underground water in the tailings is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tailing anti-seepage, and particularly relates to an open tailing drainage system. BACKGROUND

[0002] Tailing is a place where tailings or other industrial waste residues discharged after sorting of metal or non-metal ore are stacked, and is formed by damming or land sealing. Tailing is prone to induce local slope instability under external force, and further trigger secondary geological disasters such as landslides and debris flows. Tailing seepage water is a major pollutant. At present, seepage treatment is generally only performed below the tailing, but when the rainy season comes, rainwater will infiltrate to cause tailing instability and trigger geological problems.

[0003] Therefore, it is necessary to provide an improved technical solution for the above-mentioned deficiencies of the prior art. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of open tailing drainage systems, which is to overcome the deficiencies in the prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] An open tailing drainage system, comprising:

[0007] Seepage well, the seepage well is uniformly distributed on the tailing heap, and the lower end thereof extends to the bottom of the tailing heap;

[0008] Seepage pipe, the seepage pipe extends into the bottom of the seepage well in the axial direction, gravel is filled between the seepage well and the seepage pipe, the wellhead of the seepage well is sealed by ramming clay, and seepage openings are uniformly distributed on the middle and lower parts of the outer wall of the seepage pipe;

[0009] Suction pipe, the lower end of the suction pipe extends from the pipe opening of the seepage pipe, and the upper end of the suction pipe is connected to a suction pump after extending out of the seepage pipe;

[0010] Sealing cover, the sealing cover is arranged on the upper end of the seepage pipe, a first perforation corresponding to the suction pipe is arranged on the sealing cover, and a second perforation corresponding to the air exchange pipe is also arranged on the sealing cover.

[0011] Preferably, the sealing cover is fixed to the flange on the upper end of the seepage pipe by circumferentially distributed bolts;

[0012] A conical rubber plug is arranged below the sealing cover, the smaller end of the rubber plug extends into the upper end of the seepage pipe, and a first channel and a second channel corresponding to the first perforation and the second perforation are arranged in the middle of the rubber plug, so that the first channel and the second channel respectively squeeze the suction pipe and the aeration pipe when the sealing cover is extruded.

[0013] Preferably, a plurality of sets of support mechanisms are arranged on the outside of the seepage pipe and are uniformly distributed in the longitudinal direction, the support mechanism comprises a support sleeve and a support column, the support sleeve is sleeved on the outside of the seepage pipe, a plurality of support columns are uniformly distributed around the support sleeve, and an arc-shaped support plate is arranged at the end of the support column and corresponds to the inner wall of the seepage well.

[0014] Preferably, the seepage pipe is multi-sectioned, the support mechanism is located between two adjacent seepage pipes, and the two adjacent seepage pipes are respectively inserted into the two ends of the support sleeve.

[0015] Preferably, the part of the seepage pipe extending into the support sleeve is provided with a plurality of strip-shaped holes extending in the longitudinal direction, and the support sleeve is provided with a corresponding bolt.

[0016] Preferably, the support column is made of rubber.

[0017] Preferably, a conical liquid collecting groove is arranged at the bottom of the seepage well, the seepage pipe extends into the liquid collecting groove, and a filter cover is arranged at the lower end of the suction pipe.

[0018] Preferably, a drainage ditch is arranged above the tailing pile, the inlet end of the suction pump is connected to the seepage pipe through a corrugated pipe, and the outlet end of the suction pump extends to the drainage ditch.

[0019] Preferably, a seepage-proof membrane and a soil layer are arranged above the tailing pile.

[0020] Beneficial effects: A plurality of seepage wells are arranged on the tailing pile, underground water in the tailing pile is collected through the seepage wells, underground water in the tailing pile is discharged in the rainy season, and geological problems caused by excessive underground water in the tailing pile are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings accompanying the specification of this application provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application. Among them:

[0022] Fig. 1 The structure diagram of the drainage system in the specific embodiment provided by the present application is shown in the figure;

[0023] Fig. 2 The structure diagram of the support mechanism in the specific embodiment provided by the present application is shown in the figure;

[0024] Fig. 3 The structural diagram of the stabilizing frame in the specific embodiment provided by the utility model.

[0025] In the figure: 1, seepage well; 2, seepage pipe; 3, liquid collecting tank; 4, filter cover; 5, arc-shaped support plate; 6, spoke; 7, anti-seepage membrane; 8, sealing cover; 9, air exchange pipe; 10, suction pipe; 11, suction pump; 12, drainage ditch; 13, plain soil layer; 14, hoop; 15, broken stone; 16, support column; 17, support sleeve; 18, bolt; 19, outer frame. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.

[0027] In the description of the utility model, the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and does not require the utility model to be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. The terms "connected", "connected" used in the utility model should be understood broadly, for example, it can be fixed connection, or detachable connection; it can be directly connected, or indirectly connected through intermediate components. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0029] As Figs. 1-3 shown, an open-pit tailings drainage system, comprising a seepage well 1, a seepage pipe 2, a suction pipe 10 and a sealing cover 8, the tailings pile is formed by tailings accumulation, and the anti-seepage treatment is carried out at the bottom of the tailings, specifically, after the leveling of the reservoir area, a layer of clay protection layer is laid first, then the anti-seepage material such as HDPE film and polyethylene film is laid, and finally a layer of clay protection layer is laid.

[0030] According to the tailing heap trend and the actual geological conditions, the seepage well 1 is designed, the seepage well 1 is uniformly distributed on the tailing heap, the lower end of the seepage well 1 extends to the bottom of the tailing heap, the underground water or seepage water in the tailing heap is collected through the seepage well 1, the seepage pipe 2 extends into the bottom of the seepage well 1 along the axial direction, so that the underground water in the seepage well 1 can be extracted outward by using the suction pipe 10, and then the percolation pollution caused by the rich underground water is avoided, in order to ensure the water storage capacity of the seepage well 1, the gravel 15 is filled between the seepage well 1 and the seepage pipe 2, the well mouth of the seepage well 1 is sealed by tamping clay, the seepage port is arranged on the middle and lower parts of the outer wall of the seepage pipe 2 and is uniformly distributed, the seepage port can collect the seepage water in the tailing heap and then enter the seepage pipe 2, the seepage port is used for filtering the seepage water, the lower end of the suction pipe 10 extends into the pipe opening of the seepage pipe 2, the upper end of the suction pipe 10 extends out of the seepage pipe 2 and is connected with the suction pump 11, in some embodiments, the suction pump 11 can also be directly arranged at the lower end of the suction pipe 10, the sealing cover 8 is arranged on the upper end of the seepage pipe 2, the first perforation corresponding to the suction pipe 10 is arranged on the sealing cover 8, the second perforation corresponding to the air exchange pipe 9 is also arranged on the sealing cover 8, the air exchange pipe 9 is used for air exchange in the seepage well 1, and it is ensured that the seepage water can be smoothly extracted.

[0031] In the embodiment, the upper end of the air exchange pipe 9 is bent in an inverted U shape, so that dust or rainwater can be prevented from entering the seepage pipe 2 through the air exchange pipe 9.

[0032] In an optional embodiment, the sealing cover 8 is a circular plate, the sealing cover 8 is fixed to the flange on the upper end of the seepage pipe 2 by means of the circumferentially distributed bolts, the tapered rubber plug is arranged below the sealing cover 8, the smaller end of the rubber plug has a diameter greater than the inner diameter of the seepage pipe 2, the larger end of the rubber plug is matched with the sealing cover 8, the smaller end of the rubber plug extends into the upper end of the seepage pipe 2, the first channel and the second channel corresponding to the first perforation and the second perforation respectively are arranged in the middle part of the rubber plug, so that the first channel and the second channel can be tightly pressed against the suction pipe 10 and the air exchange pipe 9 respectively when the sealing cover 8 extrudes the rubber plug to be radially deformed, and then the suction pipe 10 and the air exchange pipe 9 can be extruded and sealed, and the two pipes can be fixed by friction.

[0033] In an optional embodiment, a plurality of support mechanisms are arranged on the outer part of the seepage pipe 2 and are longitudinally distributed, the support mechanisms are used for supporting the seepage pipe 2 and avoiding the influence of sedimentation on the seepage pipe 2, the support mechanism comprises a support sleeve 17 and a support column 16, the support sleeve 17 is sleeved on the outer part of the seepage pipe 2, the length of the support column 16 is matched with the radial difference between the outer wall of the seepage pipe 2 and the inner wall of the seepage well 1, a plurality of support columns 16 are uniformly distributed about the circumference of the support sleeve 17, the number of the support columns 16 is four in the application, and the end part of the support column 16 is provided with the arc-shaped support plate 5 corresponding to the inner wall of the seepage well 1, so as to increase the support area and ensure the support stability.

[0034] In another embodiment, the support column 16 is supported in the annular hoop which is matched with the inner wall of the seepage well 1 and has a length matched with the length of the support sleeve 17, so as to improve the support capacity and ensure the stability of the seepage well 1.

[0035] In an optional embodiment, the seepage pipe 2 is multi-sectioned, and can be made of cast iron and coated with an anti-rust coating. The support mechanism is located between two adjacent sections of the seepage pipe 2, and the two adjacent sections of the seepage pipe 2 are respectively inserted into two ends of the support sleeve 17. The seepage pipe 2 can be slidably assembled at the two ends of the support sleeve 17. In order to reduce the influence of tailings settlement on the seepage pipe 2, a plurality of longitudinally extending strip-shaped holes are arranged on the part of the seepage pipe 2 extending into the support sleeve 17. The strip-shaped holes can be two and symmetrically distributed about the seepage pipe 2. The support sleeve 17 is provided with a bolt 18 corresponding to the strip-shaped hole. The bolt 18 penetrates the two strip-shaped holes, so that the seepage pipe 2 can slide in the support sleeve 17 and be limited by the bolt 18. The bolt 18 can be a bolt or a pin shaft.

[0036] The support column 16 and the support sleeve 17 can be made of rubber, so as to be deformed to buffer in the deformation process.

[0037] In an optional embodiment, the seepage well 1 is provided with a conical collecting tank 3 at the bottom. The collecting tank 3 collects the seepage liquid. A filter plate corresponding to the gravel 15 is arranged above the collecting tank 3. The seepage pipe 2 extends into the collecting tank 3. A filter cover 4 is arranged at the lower end of the suction pipe 10 and located in the collecting tank 3, so as to effectively suck the seepage water through collection.

[0038] In an optional embodiment, a drainage ditch 12 is arranged above the tailings heap. The drainage ditch 12 can be multiple, and is specifically designed according to the actual distribution of the seepage well 1. The drainage ditch 12 extends to the collecting tank at the end, is used for purifying the seepage water, and then is discharged harmlessly, so as to reduce the pollution to the environment. The inlet end of the suction pump 11 is connected to the seepage pipe 2 through a corrugated pipe. The outlet end of the suction pump 11 extends to the drainage ditch 12.

[0039] The impermeable membrane 7 and the soil layer 13 are arranged above the tailings heap. The soil layer 13 is arranged above the impermeable membrane 7. The impermeable membrane 7 extends upward along the seepage pipe 2 to the upper part of the soil layer 13. A stabilizing frame corresponding to the impermeable membrane 7 is arranged in the middle of the seepage pipe 2. The stabilizing frame includes an outer frame 19, a hoop 14 and spokes 6. The outer frame 19 can be circular. The hoop 14 is arranged to fix the impermeable membrane 7 to the outer wall of the seepage pipe 2 by clamping. The outer frame 19 and the hoop 14 are concentrically distributed. The hoop 14 is fixed by bolts at the open end and can be driven by the bolts to tightly hold the outer wall of the seepage pipe 2. A plurality of spokes 6 are arranged between the outer frame 19 and the hoop 14 in a detachable manner and are uniformly distributed about the circumference. The spokes 6 are fixed to the outer frame 19 and the hoop 14 by bolts. Thus, the seepage pipe 2 is supported to avoid sinking. Further, the impermeable membrane 7 is arranged to avoid the seepage of the tailings caused by rainwater.

[0040] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the scope of protection of the present application.

Claims

1. An open pit tailings drainage system characterized by, It comprises: seepage wells, which are evenly distributed on the tailing heap and have their lower ends reaching the bottom of the tailing heap; a seepage pipe, which extends axially into the bottom of the seepage well and is filled with gravel between the seepage well and the seepage pipe, the top of the seepage well is sealed by rammed clay, and the middle and lower part of the outer wall of the seepage pipe is provided with evenly distributed seepage openings; a suction pipe, the lower end of which extends from the pipe opening of the seepage pipe, and the upper end of which extends out of the seepage pipe and is connected to a suction pump; a sealing cover, which is arranged on the upper end of the seepage pipe and is provided with a first perforation corresponding to the suction pipe and a second perforation corresponding to the air pipe.

2. The open pit tailings drainage system of claim 1, wherein, The sealing cover is fixed to the flange on the upper end of the seepage pipe by circumferentially distributed bolts; a conical rubber plug is arranged below the sealing cover, the smaller end of which extends into the upper end of the seepage pipe, and the middle part of which is provided with a first channel and a second channel corresponding to the first perforation and the second perforation respectively, so that the first channel and the second channel are respectively squeezed against the suction pipe and the air pipe when the sealing cover is squeezed.

3. The open pit tailings drainage system of claim 1, wherein, The seepage pipe is provided with multiple sets of longitudinally distributed support mechanisms on the outside, which comprise a support sleeve and a support column, the support sleeve is sleeved on the outside of the seepage pipe, multiple support columns are uniformly distributed about the circumference of the support sleeve, and the end of the support column is provided with an arc-shaped support plate corresponding to the inner wall of the seepage well.

4. The open pit tailings drainage system of claim 3, wherein, The seepage pipe is multi-sectioned, the support mechanism is located between the two adjacent seepage pipes, and the two adjacent seepage pipes are respectively inserted into the two ends of the support sleeve.

5. The open pit tailings drainage system of claim 4, wherein, The part of the seepage pipe extending into the support sleeve is provided with multiple longitudinally extending strip-shaped holes, and the support sleeve is provided with a corresponding latch.

6. The open pit tailings drainage system of claim 5, wherein, The support column is made of rubber.

7. The open pit tailings drainage system of claim 1, wherein, The bottom of the seepage well is provided with a conical liquid collecting groove, the seepage pipe extends into the liquid collecting groove, and a filter cover is arranged at the lower end of the suction pipe.

8. The open pit tailings drainage system of claim 1, wherein, A drainage ditch is arranged above the tailing heap, the suction pump is connected to the seepage pipe through a corrugated pipe, and the discharge end of the suction pump extends to the drainage ditch.

9. The open pit tailings drainage system of claim 1, wherein, An impermeable membrane and a soil layer are laid on the tailing heap.

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