Tailing pond dam drainage system

Abstract

The utility model relates to the technical field of tailing pond dam drainage, in particular to a tailing pond dam drainage system. The water collecting ditch is arranged on the horizontal dam face, the bottom face of the water collecting ditch has a certain gradient, and the gradient direction faces the inclined dam face. A plurality of parallel drainage pipes are arranged in the inclined dam face, the high ends of the drainage pipes are connected with the water collecting ditch, the low ends of the drainage pipes are connected with the drainage ditch, and flexible sealing sleeves are arranged at the joints of the drainage pipes and the water collecting ditch; an impermeable layer is arranged below the drainage pipe; a plurality of water seepage holes are formed in the upper surface of the drainage pipe, and filter screens are arranged on the water seepage holes; and a spiral flow guide rib is arranged on the inner wall of the drainage pipe. According to the utility model, accumulated water in the dam body can be comprehensively and efficiently collected and discharged, the seepage line of the dam body is reduced, the shear strength of tailings is improved, the anti-sliding stability of the dam body is enhanced, and the disaster risks of landslide, collapse and the like are reduced.

Description

Technical Field

[0001] This utility model relates to the field of tailings dam drainage technology, specifically to a tailings dam drainage system. Background Technology

[0002] Tailings dams are crucial production facilities for mining enterprises, used to store tailings slurry discharged from ore processing plants. As a key component of tailings dams, the safe and stable operation of the tailings dam directly affects the production safety of mining enterprises, the surrounding environment, and the lives and property of downstream residents. During the operation of tailings dams, due to factors such as tailings consolidation, rainfall, and the continuous input of tailings slurry, large amounts of water accumulate within the dam. If this accumulated water cannot be drained in a timely and effective manner, it will cause the phreatic line inside the dam to rise.

[0003] When the phreatic line is too high, the shear strength of the tailings will be significantly reduced, and the stability of the dam will be seriously threatened. On the one hand, an excessively high phreatic line will reduce the effective stress between tailings particles, thereby reducing the anti-sliding stability of the dam and increasing the risk of landslides, collapses, and other disasters. On the other hand, long-term high water level soaking may also cause seepage, piping, and other dangerous situations in the dam, further damaging the structural integrity of the dam and even leading to catastrophic accidents such as tailings dam failure.

[0004] Currently, the drainage ditches of existing tailings dam drainage systems are typically exposed on the dam surface, allowing for the rapid and effective removal of surface water, thus reducing rainwater infiltration and improving dam stability. However, under prolonged rain erosion and alternating rainy and dry seasons, the drainage ditches often develop surface cracks, and new, narrow channels are formed at the junction of the sides and the dam foundation due to erosion. These cracks and eroded channels often lead to leakage during drainage, and without maintenance and repair, this will inevitably pose unpredictable safety hazards to the dam over time. Utility Model Content

[0005] To address the problem of leakage caused by long-term use of exposed drainage ditches in the existing technology, this utility model provides a tailings dam drainage system.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A tailings dam drainage system includes a dam body, a collection ditch, drainage pipes, a seepage-proof layer, and a drainage ditch. The dam body includes a horizontal dam face and an inclined dam face. The top of the inclined dam face connects to the horizontal dam face, and the bottom of the inclined dam face is provided with the drainage ditch. The collection ditch is provided on the horizontal dam face, and the bottom surface of the collection ditch has a certain slope, with the slope direction facing the inclined dam face. Multiple parallel drainage pipes are provided inside the inclined dam face. The upper end of each drainage pipe connects to the collection ditch, and the lower end of each drainage pipe connects to the drainage ditch. A flexible sealing sleeve is provided at the connection between the drainage pipe and the collection ditch. The seepage-proof layer is provided below the drainage pipe. The upper surface of the drainage pipe has multiple seepage holes, and a filter screen is provided on each seepage hole. The inner wall of the drainage pipe is provided with spiral guide ribs.

[0008] Furthermore, the seepage holes are distributed in an elliptical array.

[0009] Furthermore, the impermeable layer is a composite geomembrane, which comprises two layers of geotextile and one layer of plastic film.

[0010] Furthermore, it also includes an integrated micro-monitoring sensor, which is disposed inside the drain pipe and includes a flow sensor and a turbidity sensor.

[0011] Furthermore, the spiral guide rib is a continuous or discontinuous spiral protrusion structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention provides a tailings dam drainage system. The bottom of the collection ditch is sloped towards the inclined dam surface, allowing water to quickly and smoothly collect into the drainage pipes, effectively preventing water from overflowing onto the horizontal dam surface and reducing erosion and additional load pressure. A flexible sealing sleeve is installed at the connection between the drainage pipe and the collection ditch to prevent leakage, ensuring efficient operation of the drainage system and preventing uneven water distribution within the dam body that could affect its stability. Multiple parallel drainage pipes are installed within the inclined dam surface to comprehensively and efficiently collect and drain water from the dam body, lowering the phreatic line, increasing the shear strength of the tailings, enhancing the dam's anti-sliding stability, and reducing the risk of landslides and collapses. A filter screen is installed in the seepage holes on the upper surface of the drainage pipes to effectively prevent sediment from entering, preventing blockages and reducing cleaning and maintenance costs and workload. The spiral guide ribs on the inner wall of the drainage pipe guide the water flow to form a spiral flow within the pipe, accelerating water discharge, preventing local water accumulation or slow water flow, and improving drainage efficiency. At the same time, the seepage-proof layer below the drainage pipe prevents water from seeping downwards from the dam body, preventing adverse effects on the foundation below the dam and avoiding problems such as foundation settlement. Attached Figure Description

[0014] The embodiments of this utility model will be further described below with reference to the accompanying drawings, wherein:

[0015] Figure 1 A schematic diagram of an embodiment of the tailings dam drainage system is shown;

[0016] Attached diagram labels: 1-Dam body, 2-Water collection ditch, 3-Drainage pipe, 4-Imperible layer, 5-Drainage ditch. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0018] Reference Appendix Figure 1 A tailings dam drainage system includes a dam body 1, a collection ditch 2, drainage pipes 3, an impermeable layer 4, and a drainage ditch 5. The dam body 1 includes a horizontal dam face and an inclined dam face. The top of the inclined dam face connects to the horizontal dam face, and the bottom of the inclined dam face is provided with a drainage ditch 5. The horizontal dam face is provided with a collection ditch 2, the bottom surface of which has a certain slope, the slope direction facing the inclined dam face. Multiple parallel drainage pipes 3 are provided inside the inclined dam face. The high end of the drainage pipes 3 connects to the collection ditch 2, and the low end of the drainage pipes 3 connects to the drainage ditch 5. A flexible sealing sleeve is provided at the connection between the drainage pipes 3 and the collection ditch 2. An impermeable layer 4 is provided below the drainage pipes 3. Multiple seepage holes are provided on the upper surface of the drainage pipes 3, and filter screens are provided on the seepage holes. The inner wall of the drainage pipes 3 is provided with spiral guide ribs. The guide ribs guide the water flow to form a rotating flow state, which can both accelerate the drainage flow rate and flush the pipe wall deposits to achieve a self-cleaning function.

[0019] In one embodiment of this utility model, the seepage holes are distributed in an elliptical array.

[0020] In one embodiment of this utility model, the impermeable layer 4 is a composite geomembrane, which includes two layers of geotextile and one layer of plastic film, and has excellent impermeability.

[0021] In one embodiment of this utility model, an integrated micro monitoring sensor is also included. The integrated micro monitoring sensor is installed inside the drain pipe 3. The integrated micro monitoring sensor includes a flow sensor and a turbidity sensor. The integrated micro monitoring sensor collects flow and turbidity data in real time. When an abnormal decrease in flow or a sudden increase in turbidity is detected, it provides timely warning of pipe blockage or damage and reminds maintenance personnel to unclog or replace the damaged pipe section.

[0022] In one embodiment of this utility model, the spiral guide rib is a continuous or discontinuous spiral protrusion structure.

[0023] In use, the water collection ditch 1 collects rainwater from the horizontal dam surface and discharges it into the drainage pipe 3; the rainwater from the inclined dam surface seeps into the ground and enters the drainage pipe 3 through the seepage holes; the rainwater in the drainage pipe 3 is eventually discharged through the drainage ditch 5.

[0024] This invention provides a tailings dam drainage system. The bottom of the collection ditch is sloped towards the inclined dam surface, allowing water to quickly and smoothly collect into the drainage pipes, effectively preventing water from overflowing onto the horizontal dam surface and reducing erosion and additional load pressure. A flexible sealing sleeve is installed at the connection between the drainage pipe and the collection ditch to prevent leakage, ensuring efficient operation of the drainage system and preventing uneven water distribution within the dam body that could affect its stability. Multiple parallel drainage pipes are installed within the inclined dam surface to comprehensively and efficiently collect and drain water from the dam body, lowering the phreatic line, increasing the shear strength of the tailings, enhancing the dam's anti-sliding stability, and reducing the risk of landslides and collapses. A filter screen is installed in the seepage holes on the upper surface of the drainage pipes to effectively prevent sediment from entering, preventing blockages and reducing cleaning and maintenance costs and workload. The spiral guide ribs on the inner wall of the drainage pipe guide the water flow to form a spiral flow within the pipe, accelerating water discharge, preventing local water accumulation or slow water flow, and improving drainage efficiency. At the same time, the seepage-proof layer below the drainage pipe prevents water from seeping downwards from the dam body, preventing adverse effects on the foundation below the dam and avoiding problems such as foundation settlement.

[0025] The foregoing description describes some exemplary embodiments of this utility model. It is understood that the above embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. The features in these embodiments can be recombine in a suitable manner, and the resulting solutions are still within the scope of protection claimed by this utility model. Based on the above embodiments, all other embodiments obtained by those skilled in the art without inventive effort, that is, all modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by this utility model.

Claims

1. A tailings dam drainage system, characterized in that, The dam body (1) includes a water collection ditch (2), a drainage pipe (3), an anti-seepage layer (4), and a drainage ditch (5). The dam body (1) includes a horizontal dam surface and an inclined dam surface. The top of the inclined dam surface is connected to the horizontal dam surface, and the bottom of the inclined dam surface is provided with the drainage ditch (5). The water collection ditch (2) is provided on the horizontal dam surface. The bottom surface of the water collection ditch (2) has a certain slope, and the slope direction is towards the inclined dam surface. Multiple parallel drainage pipes (3) are provided inside the inclined dam surface. The high end of the drainage pipe (3) is connected to the water collection ditch (2), and the low end of the drainage pipe (3) is connected to the drainage ditch (5). A flexible sealing sleeve is provided at the connection between the drainage pipe (3) and the water collection ditch (2). The anti-seepage layer (4) is provided below the drainage pipe (3). Multiple seepage holes are provided on the upper surface of the drainage pipe (3), and a filter screen is provided on the seepage holes. The inner wall of the drainage pipe (3) is provided with spiral guide ribs.

2. The tailings dam drainage system according to claim 1, characterized in that, The seepage holes are distributed in an elliptical array.

3. A tailings dam drainage system according to claim 1, characterized in that, The impermeable layer (4) is a composite geomembrane, which includes two layers of geotextile and one layer of plastic film.

4. A tailings dam drainage system according to claim 1, characterized in that, It also includes an integrated micro monitoring sensor, which is disposed inside the drain pipe (3) and includes a flow sensor and a turbidity sensor.

5. A tailings dam drainage system according to claim 1, characterized in that, The spiral guide ribs are continuous or discontinuous spiral protrusions.

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