Tailing pond riding track drainage ditch capable of draining seepage

Abstract

The utility model provides a tailing pond riding track drainage ditch capable of draining seepage, which belongs to the technical field of tailing ponds, and comprises a plurality of riding track drainage ditch main bodies and a seepage draining body, and the plurality of riding track drainage ditch main bodies are correspondingly arranged on the inner side of each stage of riding track of a downstream slope of a fill dam; a plurality of seepage drainage bodies are evenly arranged in the length direction of the riding track drainage ditch body, the riding track drainage ditch body is connected with one side of the corresponding seepage drainage body through the corresponding seepage drainage pipe, and the seepage drainage bodies are located in a dam slope of the fill dam. The seepage drainage body is arranged on the inner side of the riding track drainage ditch main body, one side of the seepage drainage body is connected with one side of the riding track drainage ditch main body, and the rest part is wrapped by the geotechnical cloth, so that seepage water in the fill dam is conveniently collected, and the phenomena of sand leakage and running and mixing are prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of tailings ponds, and in particular relates to a drainage ditch for a tailings pond horseway capable of draining seepage. Background Art

[0002] As one of the important infrastructures for mining enterprises, the safety of the downstream slope of the tailings pond is particularly important. Therefore, after each level of the tailings pond is formed, the downstream dam slope needs to be leveled and drainage ditches need to be set up on the inside of each level of the horseway.

[0003] After searching, an existing patent (Announcement No.: CN 106759386 A) discloses a method for constructing a tailings pond's later sub-dam and arranging dam surface drainage ditches. In the tailings pond's upstream tailings dam construction method, during the later dam construction process, the slope of the later sub-dam is controlled to slope toward the axis of the initial dam body according to the design slope requirements, and also slopes from the central axis of the sub-dam toward the abutments on both sides. Abutment drainage ditches are constructed on the mountain where the later sub-dam meets the mountain and are connected to the abutment drainage ditches of the initial dam body. A horse runway is provided every 5 meters of vertical ascent of the later sub-dam, and the horse runway width meets the design requirements. From the middle of the horse runway, it slopes toward the abutment drainage ditches on both sides according to the design slope. The resulting horse runway is higher in the middle and lower at both ends. A dam surface drainage longitudinal ditch is constructed on the horse runway, and the dam surface drainage longitudinal ditch also slopes toward the abutment drainage ditches on both sides according to the same slope as the horse runway. A connecting dam surface drainage transverse ditch is constructed between the dam surface drainage longitudinal ditches of two adjacent horse runways. However, the following problems exist:

[0004] Traditional horseway drainage ditches have impermeable sidewalls, allowing seepage water from the dam to drain through longitudinal drainage pipes or seep vertically into the tailings below. However, the tailings below have poor permeability, and in extreme cases, seepage water may overflow from the top of the ditch, potentially causing abnormal overflow of the infiltration line or dam slope instability. To address these issues, the present utility model has developed a new horseway drainage ditch that combines both seepage and drainage functions. Utility Model Content

[0005] In order to overcome the poor permeability of the existing bottom tailings, the seepage water may overflow from the top of the horseway drainage ditch under special circumstances, which may easily cause abnormal overflow of the infiltration line or instability of the dam slope. The utility model provides a tailings pond horseway drainage ditch that can drain seepage. The horseway drainage ditch of the utility model takes into account both seepage and drainage functions, which is beneficial to the drainage of the dam body and the drainage of the dam slope, and can improve the safety of the tailings pond dam slope.

[0006] The technical solution adopted by this utility model is:

[0007] A tailings pond horseway drainage ditch capable of draining seepage, comprising a horseway drainage ditch main body and a drainage body, wherein the horseway drainage ditch main body is provided in plurality, and the plurality of horseway drainage ditch main bodies are correspondingly arranged on the inner sides of the horseways at various levels on the downstream slope of the accumulation dam; the plurality of drainage bodies are uniformly arranged along the length direction of the horseway drainage ditch main body, the horseway drainage ditch main body is connected to one side of the corresponding drainage body through a corresponding drainage pipe, and the drainage body is located within the dam slope of the accumulation dam.

[0008] The drainage body includes geotextile, coarse sand layer and pebble gravel layer. The geotextile is wrapped around the coarse sand layer. The coarse sand layer is a hollow trapezoidal shape with one side open. The top width of the drainage body is 0.5~0.8m, and the bottom penetrates 0.8~1m into the dam slope of the accumulation dam; the pebble gravel layer is located in the hollow of the coarse sand layer.

[0009] The thickness of the coarse sand layer is 150mm~300mm, and the outer side of the coarse sand layer adopts 400g / m 2 Geotextile wrapping.

[0010] The pebble and gravel layer is made of pebble and gravel particles with a nominal particle size of 5-25 mm, wherein the content of needle-shaped and flake-shaped particles is less than 8%.

[0011] The drainage pipe is provided with an inverted filter bag at the end of the drainage body, and the geotextile-wrapped coarse sand inverted filter bag is located in the pebble and gravel layer of the drainage body.

[0012] The reverse filter bag comprises reverse filter geotextile and reverse filter coarse sand. The reverse filter geotextile is wrapped around the reverse filter coarse sand and fixed at the end of the drainage pipe.

[0013] The anti-filtration bag is tied to the end of the drainage pipe through lead wire or iron wire.

[0014] The outer end of the drainage pipe protrudes from the side wall of the horseway drainage ditch body by 20mm to 50mm.

[0015] A drainage groove is provided in the middle of the horseway drainage ditch body. The portion where the horseway drainage ditch body is connected to the drainage body is inclined, and the angle with the horizontal plane is not less than the slope of the downstream slope of the accumulation dam.

[0016] Beneficial effects of the utility model:

[0017] The utility model adopts pebbles and crushed stones with a nominal particle size of 5-25 mm, and the content of needle-shaped and flaky particles is less than 8%. Good gradation is conducive to drainage of seepage water. A large number of needle-shaped and flaky particles are prone to damage of geotextiles, which is not conducive to the long-term safety of geotextiles and reduces the effect of geotextiles in blocking tailings.

[0018] The outlet of the drainage pipe of the utility model is located in the upper middle part of the horse road drainage ditch, and the outlet of the drainage pipe is set at 1 / 2~2 / 3 of the height of the horse road drainage ditch; the selection of this height range is conducive to the smooth discharge of seepage water from the drainage pipe into the main body of the horse road drainage ditch, and can also ensure the daily flow demand of the horse road drainage ditch, and will not suck the overflow water in the main body of the horse road drainage ditch back into the accumulation dam through the drainage pipe.

[0019] The utility model arranges a drainage body on the inner side of the horseway drainage ditch main body, one side of the drainage body is connected to one side of the horseway drainage ditch main body, and the remaining part is wrapped with geotextile, which is convenient for collecting seepage water in the accumulation dam and preventing sand leakage and mix loss.

[0020] The utility model adds a structure such as a seepage body, which effectively ensures that when the tailings pond is reversely infiltrated, it is filtered through the geotextile and then passes through the coarse sand layer and the pebble gravel layer, and finally passes through the reverse filtration bag and is discharged quickly and effectively through the seepage pipe, and will not overflow from the top of the horse road drainage ditch. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described in further detail below with reference to the accompanying drawings.

[0022] Figure 1 Cross-section of horse road drainage ditch

[0023] Figure 2 Plan of bridleway drainage ditch

[0024] In the figure, the accompanying drawings are marked as follows:

[0025] 1. Main body of the horse track drainage ditch; 2. Geotextile; 3. Coarse sand layer; 4. Pebble and gravel layer; 5. Filter bag; 6. Drainage pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes, relative sizes, and positional relationships of the various regions and layers shown in the figures are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0028] Example 1:

[0029] In order to overcome the problem that the permeability of the existing bottom tailings is poor, the seepage water may overflow from the top of the horse road drainage ditch under special circumstances, which may easily cause abnormal overflow of the infiltration line or instability of the dam slope. Figure 1 and Figure 2 The utility model is a horseway drainage ditch for tailings ponds that can drain seepage. It is a horseway drainage ditch that takes into account both drainage and drainage functions. It is beneficial for drainage of dam body and drainage of dam slope, and can improve the safety of tailings pond dam slope.

[0030] A tailings pond horseway drainage ditch capable of draining seepage, comprising a horseway drainage ditch main body 1 and a drainage body, wherein the horseway drainage ditch main body 1 is multiple, and the multiple horseway drainage ditch main bodies 1 are correspondingly arranged on the inner side of each level of the horseway on the downstream slope of the accumulation dam; the multiple drainage bodies are uniformly arranged along the length direction of the horseway drainage ditch main body 1, and the horseway drainage ditch main body 1 is connected to one side of the corresponding drainage body through the corresponding drainage pipe 6, and the drainage body is located within the dam slope of the accumulation dam.

[0031] In the present invention, a drainage body is constructed after the tailings pond horseway is formed, and the drainage body is connected to the horseway drainage ditch main body 1 by a drainage pipe 6. Then, the drainage pipe 6 is pre-buried during the construction of the horseway drainage ditch main body 1, and the inner end of the drainage pipe 6 is wrapped with a reverse filter bag 5 to complete the construction of the tailings pond horseway drainage ditch that can drain seepage.

[0032] like Figure 1 As shown, in the utility model, a drainage body is set on the inner side of the horseway drainage ditch main body 1, one side of the drainage body is connected to one side of the horseway drainage ditch main body 1, and the remaining part is wrapped with geotextile 2, which is convenient for collecting seepage water in the accumulation dam and preventing sand leakage and mix loss.

[0033] In the utility model, a groove is opened in the middle of the main body 1 of the horse road drainage ditch to form the horse road drainage ditch. The preferred drainage pipe outlet in the utility model is set at 1 / 2~2 / 3 of the height of the horse road drainage ditch, and is set to be higher on the inside and lower on the outside. The selection of this height range is conducive to the smooth discharge of seepage water from the drainage pipe into the main body 1 of the horse road drainage ditch, and can also ensure the daily flow demand of the horse road drainage ditch, and will not suck the overflow water in the main body 1 of the horse road drainage ditch back into the accumulation dam through the drainage pipe.

[0034] Example 2:

[0035] Based on Example 1, in this embodiment, preferably, the drainage body includes a geotextile 2, a coarse sand layer 3 and a pebble gravel layer 4, the geotextile 2 is wrapped around the coarse sand layer 3, the coarse sand layer 3 is a hollow trapezoidal shape with an open side, the top width of the drainage body is 0.5~0.8m, and the bottom penetrates into the dam slope of the accumulation dam by 0.8~1m; the pebble gravel layer 4 is located in the hollow of the coarse sand layer 3.

[0036] Preferably, the thickness of the coarse sand layer 3 is 150mm~300mm, and the outer side of the coarse sand layer 3 is filtered with 400g / m 2 2 packages of geotextile.

[0037] In the present invention, a drainage body is provided inside the main body 1 of the horseway drainage ditch. The drainage body includes a pebble gravel layer, a coarse sand layer and a geotextile. The inside of the drainage body is a pebble gravel layer, and the outside is a coarse sand layer. The thickness of the coarse sand layer is 150mm~300mm, and the thickness of the coarse sand layer is preferably 160mm, 180mm, 200mm, 220mm, 250mm, and 280mm. One side of the drainage body is connected to one side of the main body 1 of the horseway drainage ditch, and the remaining part is filtered with 400g / m 2 The geotextile wrapping is convenient for collecting seepage water in the dam and preventing sand leakage and mix loss.

[0038] Preferably, the pebble and gravel layer 4 is made of pebble and gravel particles with a nominal particle size of 5-25 mm, wherein the content of needle-shaped and flake-shaped particles is less than 8%.

[0039] The pebble gravel layer 4 provided in the present invention has a good gradation, which is conducive to drainage of seepage water. However, a large number of needle-shaped and flaky particles are prone to damage to the geotextile, which is not conducive to the long-term safety of the geotextile and reduces the geotextile's ability to block tailings.

[0040] Preferably, the drainage pipe 6 is provided with a filter bag 5 at the end of the drainage body, and the geotextile-wrapped coarse sand filter bag 5 is located in the pebble and gravel layer 4 of the drainage body.

[0041] Preferably, the filter bag 5 includes filter geotextile and filter coarse sand, and the filter geotextile is wrapped around the filter coarse sand and fixed at the end of the drainage pipe 6.

[0042] Preferably, the anti-filtration bag 5 is tied to the end of the drainage pipe 6 by lead wire or iron wire.

[0043] In the utility model, the thickness of the anti-filtration coarse sand is 0.5-1mm, and the anti-filtration geotextile outside the anti-filtration coarse sand is tied together with lead wire or iron wire and tied to the end of the drainage pipe 6; in this way, the seepage water discharged from the tailings pond will not flush the pebbles and gravel in the pebble and gravel layer in the drainage body into the drainage pipe 6 after passing through the drainage body, thereby causing the drainage pipe 6 to be blocked and affecting the drainage effect.

[0044] Preferably, the outer end of the drainage pipe 6 protrudes from the side wall of the horseway drainage ditch body 1 by 20 mm to 50 mm.

[0045] like Figure 2As shown, in this utility model, a drainage pipe 6 connects the main body 1 of the ditch to the drainage body. The inner end of the drainage pipe 6 is secured with a filter bag 5 made of coarse sand wrapped in geotextile fabric. The outer portion of the drainage pipe 6 protrudes 20 to 50 mm from the sidewall of the main body 1 of the ditch. The outlet of the drainage pipe 6 is located in the upper middle portion of the ditch within the main body 1 of the ditch. The outlet is positioned higher on the inside and lower on the outside to facilitate drainage of seepage and prevent backflow. The drainage pipes 6 are spaced 5 to 10 meters horizontally, depending on factors such as dam height and catchment area.

[0046] Preferably, a drainage groove is provided in the middle of the horseway drainage ditch body 1, and the portion where the horseway drainage ditch body 1 is connected to the drainage body is inclined, and the angle with the horizontal plane is not less than the slope of the downstream slope of the accumulation dam.

[0047] In the present invention, a groove is formed in the middle of the main body 1 of the horseway drainage ditch, forming the horseway drainage ditch. The drainage pipe outlet is preferably set at 1 / 2 to 2 / 3 of the height of the horseway drainage ditch. This height range is selected to facilitate the smooth discharge of seepage water from the drainage pipe into the main body of the horseway drainage ditch, while also ensuring the daily flow requirements of the horseway drainage ditch, and preventing the overflow water in the main body 1 of the horseway drainage ditch from being sucked back into the accumulation dam through the drainage pipe. This structure is simple and effective.

[0048] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0049] It should also be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0050] The above examples are merely illustrative of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention. The device structures and method steps not described in detail in the present invention are prior art and will not be further described in the present invention.

Claims

1. A tailings drainage ditch capable of draining seepage, characterized by: The invention comprises a horse track drainage ditch main body (1) and a drainage body, wherein the horse track drainage ditch main body (1) is multiple, and the multiple horse track drainage ditch main bodies (1) are correspondingly arranged on the inner side of each level of the horse track on the downstream slope of the accumulation dam; the drainage body is multiple, and is evenly arranged along the length direction of the horse track drainage ditch main body (1), and the horse track drainage ditch main body (1) is connected to one side of the corresponding drainage body through a corresponding drainage pipe (6), and the drainage body is located inside the dam slope of the accumulation dam.

2. The tailings drainage ditch capable of draining seepage according to claim 1, characterized in that: The drainage body comprises a geotextile (2), a coarse sand layer (3) and a pebble gravel layer (4), wherein the geotextile (2) is wrapped around the coarse sand layer (3), the coarse sand layer (3) is in the shape of a hollow trapezoid with one side open, the top width of the drainage body is 0.5-0.8m, and the bottom penetrates 0.8-1m into the dam slope of the accumulation dam; the pebble gravel layer (4) is located in the hollow of the coarse sand layer (3).

3. The tailings drainage ditch capable of draining seepage according to claim 2, characterized in that: The thickness of the coarse sand layer (3) is 150mm-300mm, and the outer side of the coarse sand layer (3) adopts 400g / m 2 The geotextile (2) is wrapped.

4. The tailings drainage ditch capable of draining seepage according to claim 2, characterized in that: The pebble and gravel layer (4) uses pebbles and gravel particles with a nominal particle size of 5-25 mm.

5. The tailings drainage ditch capable of draining seepage according to claim 1, characterized in that: The drainage pipe (6) is provided with a filter bag (5) at the end of the drainage body, and the filter bag (5) is located in the pebble and gravel layer (4) of the drainage body.

6. The tailings drainage ditch capable of draining seepage according to claim 5, characterized in that: The reverse filter bag (5) comprises reverse filter geotextile and reverse filter coarse sand, wherein the reverse filter geotextile is wrapped around the reverse filter coarse sand and fixed at the end of the drainage pipe (6).

7. The tailings drainage ditch capable of draining seepage according to claim 6, characterized in that: The anti-filtration bag (5) is tied to the end of the drainage pipe (6) by means of lead wire or iron wire.

8. The tailings drainage ditch capable of draining seepage according to claim 1, characterized in that: The outer end of the drainage pipe (6) protrudes from the side wall of the horseway drainage ditch body (1) by 20mm-50mm.

9. The tailings drainage ditch capable of draining seepage according to claim 1, characterized in that: A drainage groove is provided in the middle of the horseway drainage ditch body (1); the portion where the horseway drainage ditch body (1) is connected to the drainage body is inclined, and the angle with the horizontal plane is not less than the slope of the downstream slope of the accumulation dam.

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