A drainage well modification seepage control facility and modification method thereof

Abstract

This application relates to the field of tailings dam drainage facilities, and in particular to a drainage well modification drainage facility and its modification method. The drainage well modification drainage facility includes a well base, a well shaft, a concrete sealing layer, a geotextile layer, a water guide pipe, and a drainage pipe. The concrete sealing layer seals one end of the well base connected to the well shaft and is used to filter wastewater in the tailings dam. The geotextile layer covers the side of the concrete sealing layer facing away from the well base. The bottom end of the water guide pipe passes through the geotextile layer and the concrete sealing layer and connects to the drainage pipe below the well base. Multiple water guide pipes are circumferentially spaced around the axis of the well base. The top end of the water guide pipe passes through the well shaft and connects to the drainage pipe. The drainage pipe is inclined upwards at the end facing away from the water guide pipe. This application modifies the drainage well into a drainage facility, thereby improving the utilization rate of the drainage well and saving resources.

Description

Technical Field

[0001] This application relates to the field of tailings dam drainage facilities, and in particular to a drainage well modification drainage facility and its modification method. Background Technology

[0002] Tailings dams are facilities used to store tailings discharged after ore beneficiation in metallic and non-metallic mines. Tailings dams are typically built into mountainsides, in valleys, surrounded by steep slopes, allowing them to utilize the natural terrain for tailings storage. Drainage wells in tailings dams are facilities that discharge floodwaters. In the event of flooding, these wells promptly drain the water, preventing overtopping and dam failure, and ensuring the flood control safety of the tailings dam. Additionally, the discharged tailings may contain clarified water, and sometimes the drainage wells also serve as facilities for discharging this clarified water.

[0003] A drainage well consists of a well base and a well casing. The well base is connected to a drainage pipe. When the water level in the tailings dam rises to the well casing, the water in the tailings dam passes through the well casing and the well base in sequence and is finally discharged into the drainage pipe at the bottom of the drainage well.

[0004] When the service life of a drainage well in a tailings dam expires, it is usually considered to be of no use and will be sealed off. Then, the next drainage well will be put into use for flood discharge in the tailings dam area. At this time, the drainage well itself is still structurally intact. Sealing the drainage well not only requires manpower and resources, but the drainage well can no longer be used, resulting in a waste of drainage well resources. Summary of the Invention

[0005] In order to improve the utilization rate of drainage wells and save resources, this application provides a drainage well modification and seepage facility and modification method.

[0006] Firstly, this application provides a seepage drainage facility for the modification of a drainage well, employing the following technical solution:

[0007] A drainage well modification seepage facility includes a well base and a well cylinder connected and fixed on the well base, and also includes a concrete sealing layer, a geotextile layer, a water guide pipe and a seepage pipe.

[0008] The concrete sealing layer seals one end of the well base connected to the well shaft and is used to filter wastewater in the tailings dam. The geotextile layer covers the side of the concrete sealing layer away from the well base and is used to isolate tailings sand. The water guide pipe is laid vertically and its bottom end passes through the geotextile layer and the concrete sealing layer and is connected to the drainage pipe below the well base. Multiple water guide pipes are provided and are laid out circumferentially around the axis of the well base. The top end of the water guide pipe passes through the well shaft and is connected to the drainage pipe. The drainage pipe is laid inclined upwards at the end away from the water guide pipe.

[0009] By adopting the above technical solution, drainage wells that have reached the end of their service life and are about to be sealed are targeted for renovation. A water guide pipe is laid inside the drainage well, connecting the seepage pipe and the drainage pipeline. Seepage water from the tailings dam can flow through the seepage pipe into the water guide pipe and then be discharged downstream to the drainage pipeline for centralized treatment. To prevent tailings sand from seeping into the area below the well base and causing pollution, a concrete sealing layer is placed on top of the well base. To prevent the pores of the concrete sealing layer from being clogged by tailings sand, thus affecting its permeability, a geotextile layer is placed over the concrete sealing layer. The geotextile layer can filter tailings while maintaining permeability, thereby maintaining the permeability of the concrete sealing layer. This application transforms drainage wells into seepage drainage facilities without increasing the cost of sealing the drainage wells, which is less costly than constructing new seepage drainage facilities, thereby improving the utilization rate of drainage wells and saving resources.

[0010] Optionally, the other end of the drainage pipe, away from the water pipe, is inserted into the mountainside, and the slope of the drainage pipe is between 2% and 5%.

[0011] By adopting the above technical solution, the drainage pipe is at a certain angle according to the topography of the tailings dam, which can accelerate the flow rate of seepage water in the drainage pipe and make it more conducive to the seepage water being discharged into the bottom of the drainage well. One end of the drainage pipe is connected to the water guide pipe and the other end is inserted into the mountain to expand the drainage area of ​​the drainage pipe and collect more seepage water in the tailings dam.

[0012] Optionally, the diameter of the water pipe ranges from 100mm to 200mm.

[0013] By adopting the above technical solution, the larger the diameter of the water pipe, the wider the flow range of the water pipe. Furthermore, by selecting a suitable water pipe based on the seepage volume of the tailings dam, the flow rate can be met while saving costs.

[0014] Optionally, the sealing layer is a C30 reinforced concrete layer, and the thickness of the concrete sealing layer ranges from 0.5m to 1m.

[0015] By adopting the above technical solution, using a C30 reinforced concrete layer to increase the structural strength of the concrete sealing body, and limiting the thickness range of the sealing layer, the structural performance of the well seat sealing body can be achieved while filtering the seepage water in the tailings mine.

[0016] Optionally, a turning pipe is connected between the drainage pipe and the water guide pipe, the turning pipe including a first connecting pipe, a second connecting pipe and an adjusting hose for adjusting the bending angle;

[0017] The regulating hose is located between the first connecting pipe and the second connecting pipe and is fixedly connected to the first connecting pipe and the second connecting pipe. The end of the first connecting pipe opposite to the regulating hose is coaxially connected to the water guide pipe. The end of the second connecting pipe opposite to the regulating hose is coaxially connected to the drainage pipe. A locking component for locking the bending angle of the regulating hose is connected between the first connecting pipe and the second connecting pipe.

[0018] By adopting the above technical solution, since the drainage pipe is laid out at an angle, in order to accurately adjust the angle of the drainage pipe and reduce the difficulty of connecting the drainage pipe and the water guide pipe, a turning pipe is connected between the drainage pipe and the water guide pipe. The first connecting pipe is installed on the water guide pipe, and the angle of the drainage pipe can be accurately adapted by adjusting the flexible hose. At the same time, the bending angle of the adjusting hose is locked by the locking component. Then the drainage pipe is connected to the second adjusting pipe, thereby accurately controlling the angle of the drainage pipe.

[0019] Optionally, the locking assembly includes a hinged base, an adjusting rod, an adjusting slider, an adjusting slide block, and a locking element;

[0020] The hinged base is installed on the outer peripheral wall of the first connecting pipe. The adjusting rod rotates on a vertical plane parallel to the axis of the first and second connecting pipes. One end of the adjusting rod is rotatably connected to the hinged base, and the other end of the adjusting rod is hinged to the adjusting slider. The adjusting slide is installed on the second connecting pipe. The adjusting slide and the adjusting slider are slidably connected along the axis of the second connecting pipe. The locking member is used to lock the rotation angle of the adjusting rod.

[0021] By adopting the above technical solution, when the adjusting hose bends, the adjusting rod rotates along the hinged base, and the adjusting slider slides on the adjusting slide until the adjusting hose bends to the set angle. Then, the locking component locks the rotation angle of the adjusting rod and locks the position of the adjusting slider, thus supporting the bending state of the adjusting hose at this time and locking the angle of the adjusting hose.

[0022] Optionally, the locking component includes a locking screw, which is threadedly connected to the adjusting slider along a sliding trajectory perpendicular to the adjusting slider. A locking ball is connected to one end of the locking screw facing the adjusting slide block. The adjusting slide block is provided with a plurality of locking slots at intervals along the sliding trajectory of the adjusting slider for engaging the locking ball.

[0023] By adopting the above technical solution, when the adjusting slider slides on the adjusting slide block, the locking ball is located inside the adjusting slide block. When the adjusting hose bends to a specified angle, the locking screw rotates forward, causing the locking ball to slide into the locking slot, thereby locking the position of the adjusting slider and thus locking the rotation angle of the adjusting rod.

[0024] Optionally, a plurality of support frames are provided at intervals along the axial direction of the regulating hose inside the regulating hose, and the support frame includes a support ring, a support column and a plurality of support rods;

[0025] The support ring is coaxially fixed to the inner circumferential wall of the adjusting hose, the support column is coaxially located at the center of the support ring, and multiple support rods are arranged circumferentially around the support column. One end of the support rod is fixed to the circumferential wall of the support column and the other end of the support rod is fixedly connected to the inner circumferential wall of the support ring. A limiting member for limiting the position of the support ring is connected between the support ring and the adjusting rod.

[0026] By adopting the above technical solution, since the wall of the regulating hose is relatively soft, in order to strengthen the structural strength of the regulating hose wall and facilitate the shaping of the regulating hose wall, a support mesh is set inside the wall of the regulating hose. The shape of the regulating hose can be supported by the support ring, and the structural strength of the regulating hose can be improved by the support rod and support column, so as to reduce the probability of the regulating hose being deformed and damaged by external force, while not affecting the flow of seepage water in the tailings dam.

[0027] Optionally, the limiting component includes a limiting base, a limiting screw, and a limiting nut;

[0028] The limiting base is fixed to the outer peripheral wall of the adjusting hose. One end of the limiting base passes through the adjusting hose and is fixedly connected to the support ring. A sealing ring that abuts against the outer peripheral wall of the adjusting hose is connected to the end face of the limiting base opposite to the support ring. The other end of the limiting base is hinged to a limiting screw. The limiting screw rotates along a vertical plane parallel to the adjusting rod. A limiting groove is provided on the adjusting rod for the limiting screw to pass through. The limiting nut is located on the side of the adjusting rod away from the limiting base. The limiting nut is threadedly connected to the limiting screw and abuts against the adjusting rod.

[0029] By adopting the above technical solution, in order to further enhance the structural strength and stability of the adjusting hose after bending, a limiting screw is used to connect the support ring and the adjusting rod, so that multiple triangles are formed between the adjusting hose, the adjusting rod, the first connecting pipe and the second connecting pipe, thereby increasing the structural stability of the entire turning pipeline.

[0030] Secondly, this application provides a method for modifying the seepage drainage facilities of a drainage well, employing the following technical solution:

[0031] A method for modifying a drainage well into a seepage prevention facility includes the following steps:

[0032] S1. Lay drainage pipes around the drainage well, the drainage pipes being laid radially around the drainage well on a horizontal plane;

[0033] S2. Install water guide pipes in the drainage well. The number of water guide pipes is the same as the number of drainage pipes. The water guide pipes are laid vertically. The bottom end of the water guide pipe passes through the well base and connects to the drainage pipe. The top end of the water guide pipe is connected to the drainage pipe.

[0034] S3. Seal one end of the well casing connected to the well base with a concrete sealing layer, and cure the concrete sealing layer until it meets the standards.

[0035] S4. Lay 1 to 2 layers of geotextile on top of the concrete sealing layer;

[0036] S5. Fill the well casing with coarse tailings or permeable sand and gravel until it is flush with the top surface of the drainage well casing.

[0037] By adopting the above technical solution, after the water pipe is installed, the concrete sealing layer and the geotextile layer are sealed in sequence to fix the position of the water pipe. In order to prevent tailings sand from entering the well and damaging the water pipe, the well is filled with coarse tailings or permeable sand and gravel to fill the well in one go, thereby avoiding the situation where the well is filled by the gravity flow of tailings sand in the later stage, which would damage the water pipe and cause the entire system to fail.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] 1. A water guide pipe connects the seepage pipe and the drainage pipeline. Seepage water within the tailings dam can flow through the seepage pipe into the water guide pipe and then be discharged downstream to the drainage pipeline for centralized treatment. A concrete sealing layer at the top of the well base filters the tailings sand in the tailings dam. The geotextile layer can filter the tailings sand while maintaining water permeability, thus preserving the permeability of the concrete sealing layer. This application transforms the drainage well into a seepage drainage facility, thereby improving the utilization rate of the drainage well and saving resources.

[0040] 2. Install the first connecting pipe on the water guide pipe. The inclination angle of the drainage pipe can be precisely adapted by adjusting the hose. At the same time, the bending angle of the adjusting hose is locked by the locking component. Then connect the drainage pipe to the second adjusting pipe to precisely control the inclination angle of the drainage pipe.

[0041] 3. By rotating the locking screw in the forward direction, the locking ball slides into the locking slot, thereby locking the position of the adjusting slider and thus locking the rotation angle of the adjusting rod. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the internal structure of the drainage well in Embodiment 1 of this application when it is not filled with coarse tailings or permeable sand and gravel.

[0043] Figure 2 This is a top view of the drainage well in Embodiment 1 of this application when it is filled with coarse tailings or permeable sand and gravel.

[0044] Figure 3 This is a schematic diagram showing the connection of the water guide pipe, the drainage pipe, and the diversion pipe in Embodiment 2 of this application.

[0045] Figure 4 This is a schematic diagram of the connection between the steering pipe and the locking assembly in Embodiment 2 of this application.

[0046] Figure 5 This is a schematic diagram of the connection between the support frame and the locking assembly in Embodiment 2 of this application.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Drainage well; 11. Well base; 12. Well shaft; 2. Concrete sealing layer; 3. Geotextile layer; 4. Water guide pipe; 5. Drainage pipe; 6. Coarse tailings or permeable sand and gravel; 7. Diverting pipe; 71. First connecting pipe; 72. Second connecting pipe; 73. Adjusting hose; 8. Locking assembly; 81. Hinge base; 82. Adjusting rod; 821. Limiting groove; 83. Adjusting slider; 84. Adjusting slide; 841. Adjusting groove; 842. Locking slot; 85. Locking component; 851. Locking screw; 825. Locking ball; 9. Support frame; 91. Support ring; 92. Support column; 93. Support rod; 94. Limiting component; 941. Limiting base; 942. Limiting screw; 943. Limiting nut; 944. Limiting spring. Detailed Implementation

[0049] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0050] This application discloses a drainage well modification seepage facility.

[0051] It should be noted that, in the description of this invention, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Example 1

[0053] Reference Figure 1 and Figure 2 The drainage facilities include a drainage well 1, a concrete sealing layer 2, a geotextile layer 3, a water guide pipe 4, and a drainage pipe 5.

[0054] The drainage well 1 includes a well base 11 and a well cylinder 12 installed on the well base 11. A water guide pipe 4 is vertically inserted into the drainage well 1. The bottom end of the water guide pipe 4 passes through the well base 11 and connects to the drainage pipe, while the top end of the water guide pipe 4 passes through the well cylinder 12 and connects to the seepage pipe 5. The water guide pipe 4 is selected according to the size of the drainage well 1, with an optimal diameter range of 100mm to 200mm. The seepage pipe 5 is laid at an angle upwards at the end furthest from the water guide pipe 4, and terminates after entering the mountain at the other end. The optimal length of the seepage pipe 5 is 50m to 60m, and the length of the seepage pipe 5 is determined by the distance between the seepage pipe 5 and the mountain, thereby increasing the structural strength of the seepage pipe 5.

[0055] To guide seepage water from the tailings dam into the drainage pipe 5, the slope of the drainage pipe 5 ranges from 2% to 5%. This increases the flow rate of seepage water from the tailings dam into the water guide pipe 4 within the drainage pipe 5. To ensure the flow rate of seepage water from the tailings dam into the drainage pipe for centralized treatment, multiple water guide pipes 4 are installed, spaced circumferentially around the axis of the well base 11. Each water guide pipe 4 is connected to one drainage pipe 5. Figure 2 As shown, taking 12 water pipes 4 as an example, the drainage pipes 5 radiate outwards from the axis of the well base 11, thereby increasing the drainage area of ​​the drainage well 1.

[0056] In addition, to prevent tailings sand from entering the shaft base 11, a concrete sealing layer 2 is used to seal the end face of the shaft base 11 connecting to the shaft 12. The concrete sealing layer 2 is made of C30 reinforced concrete, and its thickness ranges from 0.5m to 1m. The cost is minimized while ensuring the structural strength of the concrete sealing layer 2. The concrete sealing layer 2 is permeable, preventing tailings sand from entering the shaft base 11, but water from the tailings pond can pass through the filtration of the concrete sealing layer 2 and enter the shaft base 11. To prevent tailings sand from clogging the pores of the concrete sealing layer 2 and affecting its permeability, one to two layers of geotextile 3 are applied to the side of the concrete sealing layer 2 facing away from the shaft base 11. Because the geotextile is permeable, it can prevent tailings sand from contacting the concrete sealing layer 2, thereby maintaining its permeability.

[0057] Furthermore, since the water guide pipe 4 runs through the well base 11 and the well shaft 12, once the tailings sand gradually fills the well shaft 12, it is very likely to damage the water guide pipe 4, causing the entire drainage system to fail. Therefore, in order to strengthen the support of the water guide pipe 4, the well shaft 12 is filled with coarse tailings or permeable sand and gravel 6 in one go, and the coarse tailings or permeable sand and gravel 6 is filled to be flush with the well shaft 12.

[0058] In existing technology, drainage well 1 serves as a flood discharge facility, primarily used for discharging floodwater. With the discharge of tailings, water accumulates in the tailings dam due to the water content in the tailings sand. Sand's permeability causes this water to slowly seep downwards. The sand below the weeping line is saturated, while the sand above the weeping line is unsaturated. The rise in water level within the tailings dam is accompanied by a rise in the weeping line. If the weeping line is too high, the tailings dam is prone to collapse. To ensure the safety of the tailings dam, the depth of the weeping line needs to be reduced. Therefore, drainage facilities are constructed within the tailings dam to drain the accumulated water and lower the weeping line. These drainage facilities and the main drainage system are two completely isolated facilities.

[0059] This application focuses on the renovation of drainage well 1, which is about to be sealed after its service period expires. A water guide pipe 4 is installed in drainage well 1, which connects the seepage pipe 5 and the drainage pipe. Seepage water in the tailings dam can flow into the water guide pipe 4 through the seepage pipe 5 and then be discharged to the downstream drainage pipe for centralized treatment. To prevent tailings sand from seeping into the bottom of well base 11 and causing pollution, a concrete sealing layer 2 and a geotextile layer 3 are installed on top of well base 11. Coarse tailings or permeable sand and gravel 6 are filled into the well cylinder 12 to improve the support strength of the water guide pipe 4, thereby completing the renovation of drainage well 1.

[0060] This application transforms drainage well 1 into a seepage drainage facility without increasing the cost of sealing it. This not only reduces costs compared to constructing a new seepage drainage facility, but also, since drainage well 1 is typically located at the bottom of the tailings ditch, with drainage equipment connected to its bottom and buried underground, the transformed seepage drainage facility is positioned at the top of drainage well 1. With drainage well 1 as the center, the drainage pipes 5 can penetrate part of the sludge interlayer, resulting in significantly improved seepage drainage from the tailings. This leads to a greater reduction in the phreatic line, which is beneficial for tailings consolidation and improves the safety and stability of the tailings dam. Ultimately, this improves the overall utilization rate of drainage well 1 and saves resources.

[0061] Through practical operation, after converting the expired drainage well 1 into a seepage drainage facility, the burial depth of the phreatic line within the tailings dam can be reduced by 1.2m to 2.5m, resulting in a significant seepage drainage effect. The safety factor of the tailings dam increases by 0.06-0.10, thereby improving the safety and stability of the tailings dam body.

[0062] The implementation principle of Example 1 is as follows: A drainage well 1, whose service period has expired and is about to be sealed, is selected as the target for modification. A water guide pipe 4 is installed inside the drainage well 1, connecting the seepage pipe 5 and the drainage pipeline. Seepage water from the tailings dam can flow through the seepage pipe 5 into the water guide pipe 4 and then be discharged downstream into the drainage pipeline for centralized treatment. A concrete sealing layer 2 is sealed on top of the well base 11, and a geotextile layer 3 is covered on top of the concrete sealing layer 2. This layer can filter tailings while maintaining water permeability, thus preserving the permeability of the concrete sealing layer 2. This application transforms the drainage well 1 into a seepage drainage facility without increasing the cost of sealing the drainage well 1. Compared to constructing a new seepage drainage facility, this method is less expensive, thereby improving the utilization rate of the drainage well 1 and saving resources.

[0063] Embodiment 1 of this application also discloses a method for modifying a drainage well 1 to improve its seepage drainage facilities. The modification method includes the following steps:

[0064] S1. Lay out drainage pipes 5 around drainage well 1, wherein the out drainage pipes 5 are arranged radially around drainage well 1 on a horizontal plane;

[0065] S2. Install water guide pipes 4 in drainage well 1. The number of water guide pipes 4 is the same as that of drainage pipes 5. The water guide pipes 4 are arranged vertically. The bottom end of the water guide pipe 4 passes through the well base 11 and is connected to the drainage pipe. The top end of the water guide pipe 4 is connected to the drainage pipe 5.

[0066] S3. Seal one end of the well casing 12 connected to the well base 11 of the drainage well 1 with a concrete sealing layer 2, and cure the concrete sealing layer 2 until it meets the standard.

[0067] S4. Lay 1 to 2 layers of geotextile 3 on top of the concrete sealing layer 2;

[0068] S5. Fill the well casing 12 with coarse tailings or permeable sand and gravel 6 until it is flush with the upper end face of the well casing 12 of the drainage well 1.

[0069] The implementation principle of the method for modifying the drainage well 1 in Embodiment 1 of this application is as follows: After the water pipe 4 is installed, the concrete sealing layer 2 and the geotextile layer 3 are sealed in sequence to fix the position of the water pipe 4. The well cylinder 12 is filled with coarse tailings or permeable sand and gravel 6, which can fill the well cylinder 12 at one time, thereby avoiding the situation where the well cylinder 12 is filled by the gravity flow of tailings sand in the later stage, which would damage the water pipe 4 and cause the entire system to fail. Thus, the modification of the drainage well 1 is completed, the utilization rate of the drainage well 1 is improved, and resources are saved.

[0070] Example 2

[0071] Reference Figure 3The difference between this embodiment and embodiment 1 is that, in order to accurately adjust the tilt angle of the drainage pipe 5 and reduce the difficulty of connecting the drainage pipe 5 and the water guide pipe 4, as shown in the figure, a turning pipe 7 is connected between the drainage pipe 5 and the water guide pipe 4. The turning pipe 7 includes a first connecting pipe 71, a second connecting pipe 72, and an adjusting hose 73.

[0072] One end of the adjusting hose 73 is fixedly connected to the first connecting pipe 71, and the other end of the adjusting hose 73 is fixedly connected to the second connecting pipe 72. The first connecting pipe 71 is coaxially connected to the water guide pipe 4, and the second connecting pipe 72 is coaxially connected to the drainage pipe 5, thereby achieving the connection between the drainage pipe 5 and the water guide pipe 4. The connection between the first connecting pipe and the water guide pipe 4, and between the second connecting pipe 72 and the drainage pipe 5, can be a threaded connection or a snap-fit ​​connection, such as... Figure 3 As shown, this embodiment 2 demonstrates a threaded connection.

[0073] The adjusting hose 73 is a flexible hose, and its material can be a metal hose, a braided hose, or a PVC hose. The tilt angle of the drainage pipe 5 can be precisely adjusted by adjusting the degree of bending of the adjusting hose 73.

[0074] To lock the bending angle of the adjusting hose 73, refer to... Figure 3 and Figure 4 A locking assembly 8 is connected between the first connecting pipe 71 and the second connecting pipe 72. The locking assembly 8 includes a hinged base 81, an adjusting rod 82, an adjusting slider 83, an adjusting slide block 84, and a locking element 85.

[0075] The hinged base 81 is installed on the outer peripheral wall of the first connecting pipe 71, and the adjusting rod 82 rotates on a vertical plane parallel to the axes of the first and second connecting pipes 71 and 72. One end of the adjusting rod 82 is rotatably connected to the hinged base 81, and the other end is hinged to the adjusting slider 83. The adjusting slide 84 is installed on the second connecting pipe 72, and the adjusting slide 84 has an adjusting groove 841 along the axis parallel to the second connecting pipe 72, which is slidably connected to the adjusting slider 83.

[0076] When the adjusting hose 73 bends, the adjusting rod 82 rotates with the bending angle of the adjusting hose 73. Simultaneously, the rotating rod 82 pushes the adjusting slider 83 to slide on the adjusting slide block 84. To lock the rotation angle of the adjusting rod 82, a locking element 85 is connected to the adjusting slide block 84. The locking element 85 includes a locking screw 851 and a locking ball 825.

[0077] The locking screw 851 is threadedly connected to the adjusting slider 83 along a sliding path perpendicular to the adjusting slider 83, and the end of the locking screw 851 facing the adjusting slide 84 is connected to the locking ball 825. The adjusting slide 84 is provided with a plurality of locking slots 842 at intervals along the sliding path of the adjusting slider 83 for the locking ball 825 to engage.

[0078] When the adjusting slider 83 slides on the adjusting slide block 84, the locking ball 825 is located inside the adjusting slider 83. After the rotation angle of the adjusting rod 82 is determined, the locking screw 851 rotates in the forward direction, causing the locking ball 825 to insert into the corresponding locking slot 842, thereby locking the position of the adjusting slider 83 and also locking the rotation angle of the adjusting rod 82.

[0079] When the adjusting hose 73 rotates, in order to support the internal tubing of the adjusting hose 73 and prevent the adjusting hose 73 from being squeezed and deformed, refer to... Figure 4 and Figure 5 The regulating hose 73 contains several support frames 9. These support frames 9 are spaced apart along the axis of the regulating hose 73. Each support frame 9 includes a support ring 91, a support column 92, and multiple support rods 93.

[0080] The support ring 91 is coaxially fixed to the inner circumferential wall of the regulating hose 73, ensuring that the inner circumferential wall of the regulating hose 73 remains circular when bent. The support column 92 is coaxially located at the center of the support ring 91, and multiple support rods 93 are arranged circumferentially around the support column 92. One end of the support rod 93 is fixed to the circumferential wall of the support column 92, and the other end of the support rod 93 is fixedly connected to the inner circumferential wall of the support ring 91, thereby strengthening the structural strength of the support grid 9 without affecting the flow of seepage water in the tailings dam within the regulating hose 73.

[0081] Once the bending angle of the adjusting hose 73 is locked, the shape of the adjusting hose 73 itself needs to be finalized, such as... Figure 4 As shown, among the multiple support frames 9, the middle support frame 9 is connected to the adjusting rod 82 by a limiting member 94 for limiting the position of the support frame 9. The limiting member 94 includes a limiting base 941, a limiting screw 942, a limiting nut 943, and a limiting spring 944.

[0082] A limiting base 941 is fixed to the outer peripheral wall of the adjusting hose 73. One end of the limiting base 941 passes through the adjusting hose 73 and is fixedly connected to the support ring 91. A sealing ring is connected to the end face of the limiting base 941 opposite to the support ring 91, which abuts against the outer peripheral wall of the adjusting hose 73 to prevent water from overflowing from the adjusting hose 73. The other end of the limiting base 941 is hinged to a limiting screw 942, which rotates along a vertical plane parallel to the adjusting rod 82. A limiting groove 821 is provided on the adjusting rod 82 for the limiting screw 942 to pass through. A limiting spring 944 is sleeved on the limiting screw 942, with one end of the limiting spring 944 abutting against the limiting base 941 and the other end of the limiting spring 944 abutting against the side of the adjusting rod 82 opposite to the limiting base 941.

[0083] When the adjusting rod 82 rotates, the limiting screw 942 slides within the limiting groove 821. The limiting nut 943 is located on the side of the adjusting rod 82 away from the limiting base 941. The limiting nut 943 is threadedly connected to the limiting screw 942. After the rotation position of the adjusting rod 82 is locked, the limiting nut 943 rotates on the limiting screw 942 until it abuts against the adjusting rod 82. The limiting screw 942 connects the adjusting rod 82 and the support frame 9, forming multiple triangles between the adjusting hose 73, the adjusting rod 82, the first connecting pipe 71, and the second connecting pipe 72, thereby increasing the structural stability of the entire diversion pipe 7.

[0084] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drainage well modification seepage control facility, comprising a well base (11) and a well cylinder (12) connected and fixed to the well base (11), characterized in that: It also includes a concrete sealing layer (2), a geotextile layer (3), a water conduit (4), and a drainage pipe (5); The concrete sealing layer (2) seals one end of the well base (11) connected to the well cylinder (12) and is used to filter wastewater in the tailings pond. The geotextile layer (3) covers the side of the concrete sealing layer (2) away from the well base (11) and is used to isolate tailings sand. The water guide pipe (4) is vertically laid out and its bottom end passes through the geotextile layer (3) and the concrete sealing layer (2) and is connected to the drainage pipe below the well base (11). There are multiple water guide pipes (4), and the multiple water guide pipes (4) are arranged circumferentially around the axis of the well base (11). The top end of the water guide pipe (4) passes through the well cylinder (12) and is connected to the drainage pipe (5). The drainage pipe (5) is inclined upward at the end away from the water guide pipe (4); a turning pipe (7) is connected between the drainage pipe (5) and the water guide pipe (4), the turning pipe (7) includes a first connecting pipe (71), a second connecting pipe (72) and an adjusting hose (73) for adjusting the bending angle; a locking assembly (8) for locking the bending angle of the adjusting hose (73) is connected between the first connecting pipe (71) and the second connecting pipe (72); the locking assembly (8) includes a hinge base (81), an adjusting rod (82), an adjusting slider (83), an adjusting slide (84) and a locking element; The hinged base (81) is installed on the outer peripheral wall of the first connecting pipe (71). The adjusting rod (82) rotates on a vertical plane parallel to the axes of the first connecting pipe (71) and the second connecting pipe (72). One end of the adjusting rod (82) is rotatably connected to the hinged base (81), and the other end of the adjusting rod (82) is hinged to the adjusting slider (83). The adjusting slide (84) is installed on the second connecting pipe (72). The adjusting slide (84) and the adjusting slider (83) are parallel to the second connecting pipe (72). The axial direction is slidably connected, and the locking member is used to lock the rotation angle of the adjusting rod (82); a plurality of support frames (9) are provided at intervals along the axial direction of the adjusting hose (73), and the support frame (9) includes a support ring (91); a limiting member (94) for limiting the position of the support ring (91) is connected between the support ring (91) and the adjusting rod (82); the limiting member (94) includes a limiting base (941), a limiting screw (942) and a limiting nut (943); The limiting base (941) is fixed to the outer peripheral wall of the adjusting hose (73). One end of the limiting base (941) passes through the adjusting hose (73) and is fixedly connected to the support ring (91). The limiting base (941) is connected to the end face of the support ring (91) with a sealing ring that abuts against the outer peripheral wall of the adjusting hose (73). The other end of the limiting base (941) is hinged to a limiting screw (942). The limiting screw (942) rotates along a vertical plane parallel to the adjusting rod (82). The adjusting rod (82) has a limiting groove (821) for the limiting screw (942) to pass through. The limiting nut (943) is located on the side of the adjusting rod (82) away from the limiting base (941). The limiting nut (943) is threadedly connected to the limiting screw (942) and abuts against the adjusting rod (82).

2. The drainage well modification and seepage prevention facility according to claim 1, characterized in that: The drainage pipe (5) is inserted into the mountain at the other end away from the water pipe (4), and the slope of the drainage pipe (5) is between 2% and 5%.

3. The drainage well modification and seepage prevention facility according to claim 1, characterized in that: The diameter of the water pipe (4) ranges from 100mm to 200mm.

4. The seepage drainage facility for the modification of a drainage well according to claim 1, characterized in that: The concrete sealing layer (2) is a C30 reinforced concrete layer, and the thickness of the concrete sealing layer (2) ranges from 0.5m to 1m.

5. The seepage drainage facility for the modification of a drainage well according to claim 1, characterized in that: The regulating hose (73) is located between the first connecting pipe (71) and the second connecting pipe (72) and is fixedly connected to the first connecting pipe (71) and the second connecting pipe (72). The end of the first connecting pipe (71) away from the regulating hose (73) is coaxially connected to the water guide pipe (4), and the end of the second connecting pipe (72) away from the regulating hose (73) is coaxially connected to the drainage pipe (5).

6. The seepage drainage facility for the modification of a drainage well according to claim 1, characterized in that: The locking component includes a locking screw (851), which is threadedly connected to the adjusting slider (83) along a sliding trajectory perpendicular to the adjusting slider (83). A locking ball is connected to one end of the locking screw (851) facing the adjusting slide (84). The adjusting slide (84) is provided with a plurality of locking slots (842) at intervals along the sliding trajectory of the adjusting slider (83) for locking the locking ball.

7. The seepage drainage facility for the modification of a drainage well according to claim 1, characterized in that: The supporting grid (9) also includes supporting columns (92) and multiple supporting rods (93); The support ring (91) is coaxially fixed to the inner circumferential wall of the adjusting hose (73), the support column (92) is coaxially located at the center of the support ring (91), and multiple support rods (93) are arranged circumferentially around the support column (92). One end of the support rod (93) is fixed to the circumferential wall of the support column (92), and the other end of the support rod (93) is fixedly connected to the inner circumferential wall of the support ring (91).

8. A method for modifying a drainage well into a seepage-reducing facility, applied to a drainage well modification into a seepage-reducing facility as described in any one of claims 1-7, characterized in that: Includes the following steps S1. Lay out drainage pipes (5) around the drainage well (1), the drainage pipes (5) being laid radially around the drainage well (1) on a horizontal plane; S2. Install water guide pipes (4) in the drainage well (1). The number of water guide pipes (4) is the same as that of the drainage pipes (5). The water guide pipes (4) are laid vertically. The bottom end of the water guide pipe (4) passes through the well seat (11) and is connected to the drainage pipe. The top end of the water guide pipe (4) is connected to the drainage pipe (5). S3. Seal one end of the well casing (12) of the well seat (11) of the drainage well (1) with a concrete sealing layer (2) and cure the concrete sealing layer (2) until it meets the standard. S4. Lay 1 to 2 layers of geotextile (3) on top of the concrete sealing layer (2); S5. Fill the well shaft (12) with coarse tailings or permeable sand and gravel (6) until it is flush with the upper end face of the well shaft (12) of the drainage well (1).

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