A tailings pond drainage well slot well wall reinforcing anti-falling device

Abstract

The utility model discloses a tailing pond drainage well groove well wall reinforcing anti -drop device relates to tailing pond safety protection technical field, in view of the poor adaptability of prior art tailing pond drainage well groove well wall reinforcing anti -drop device, inconvenient adjustment, reinforcing strength is insufficient and the poor stability problem, present and propose the following scheme, including mounting bracket, the bottom of mounting bracket is screwed with threaded column, and the rod wall of threaded column is screwed with the adjustment assembly that distributes in succession up and down. The utility model is accurate in wide adjustment range, reduces use cost, through multistage adjustment and modularization design of adjustment assembly, solve traditional device poor adaptability, inconvenient adjustment's problem, and the internal thread ring moves up and down along the threaded column, can be adapted to different depth well groove, and the distance between adjustment assembly can be accurately controlled, and the length of square tube adjustment support block is stretched out with the cooperation of threaded rod, and is adapted to different well diameter, and the adaptation range is improved, and different specifications support is not needed to be customized, and the customization cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tailings dam safety protection technology, and in particular to a device for reinforcing and preventing the fall off of the well wall of a tailings dam drainage well. Background Technology

[0002] The tailings dam drainage well wall reinforcement and anti-fall-off device is a core protective equipment in tailings dam drainage projects. Its main function is to support and reinforce the walls of key drainage structures such as drainage wells and drainage channels, resisting the lateral pressure of tailings deposits and groundwater seepage erosion, preventing the collapse and detachment of the well wall soil and rock, and ensuring the long-term unobstructed drainage channels. This device must possess characteristics such as high support strength, adaptability to different well diameters, convenient installation, and strong corrosion resistance. It is widely used in the maintenance of drainage systems for various types of tailings dams, including those in metal mines and non-metal mines, and directly affects the flood control and drainage capacity and overall stability of the tailings dam.

[0003] However, the existing tailings dam drainage well wall reinforcement and anti-fall-off devices have significant shortcomings in actual use.

[0004] On the one hand, it has poor adaptability and is inconvenient to adjust: traditional devices are mostly steel supports of fixed specifications, which can only be adapted to a single well diameter. Different supports need to be customized for different well slots, which increases the customization cost and limits the applicable scenarios.

[0005] On the other hand, the reinforcement strength is insufficient and the stability is poor: the single-level support design cannot achieve all-round reinforcement of deep well trenches, and the support rods and support rings are fixed by welding, requiring cutting for disassembly and replacement. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a tailings dam drainage well wall reinforcement and anti-fall-off device, which overcomes the deficiencies of existing technologies and effectively solves the problems of poor adaptability, inconvenient adjustment, insufficient reinforcement strength, and poor stability of existing tailings dam drainage well wall reinforcement and anti-fall-off devices.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A tailings dam drainage well wall reinforcement and anti-fall-off device includes a mounting frame. A threaded column is screwed to the bottom of the mounting frame, and the rod wall of the threaded column is screwed with adjusting components arranged vertically. The adjusting components arranged vertically are respectively connected to a first support component and a second support component. Each adjusting component includes an internal threaded ring, a square tube evenly distributed along the annular outer wall of the internal threaded ring, a threaded rod screwed to one end of the square tube, and a support block rotatably connected to one end of the threaded rod. Both the first and second support components include a support ring and positioning rods evenly distributed along the annular bottom of the support ring. Both the first and second support components are connected to support rods evenly distributed along the annular.

[0008] Preferably, the mounting frame has slots on both sides of its top, and the mounting frame is fixed to the wellhead through the slots and bolts; The mounting bracket is welded from Q355 steel, with dimensions of 1500×500×100mm. The strip opening is 300mm long and 20mm wide, and the surface is coated with epoxy zinc-rich paint for corrosion protection. The bolts are made of stainless steel, with a specification of M20×100mm, and are equipped with spring washers to prevent loosening.

[0009] Preferably, a ground cone is welded and fixed to the bottom of the threaded column, and the ground cone is inserted into the bottom of the well slot; The threaded post is made of 40Cr material, with a diameter of 50mm and a length of 2-5m, and has rolled threads on the surface; the ground cone is made of 45 steel, with a cone angle of 45° and a length of 300mm, and has a surface hardening treatment for easy insertion into the rock and soil for fixation.

[0010] Preferably, the top of the support block is provided with an insertion hole, and the insertion hole and the positioning rod are connected in a plug-in fit; The support block is made of wear-resistant cast iron and measures 150×100×80mm. A rubber buffer pad is bonded to the side that contacts the well wall. The insertion hole diameter is 25mm, the positioning rod diameter is 24mm, and the fitting clearance is 0.5mm to ensure a stable insertion.

[0011] Preferably, the top of the support ring in the first support assembly is provided with equally spaced slots along the circumference, and the slots are engaged with the support rod. The support ring is made of Q355 steel rolled and welded, with a diameter of 500-1500mm and a thickness of 20mm; the slots are evenly distributed along the ring and are interference fit with the support rod.

[0012] Preferably, in the second support assembly, the annular outer wall of the support ring is provided with equally spaced slots along the annular shape, and the slots and the support rod are in a plug-in movable fit. The slots are evenly distributed along the ring and correspond to the card slots above and below; the support rod is made of 40Cr material, with a diameter of 28mm, and the length is adjusted according to the well depth. The surface is chrome-plated for rust prevention. The square tube is made of seamless steel pipe and is fully welded to the internal threaded ring. It is evenly distributed along the ring; the threaded rod is made of 40Cr material, with a diameter of 30mm, and is threaded to the square tube. One end is welded with a rotating handle to facilitate adjustment of the extension length.

[0013] The beneficial effects of this utility model are as follows: 1. Wide adaptability and precise adjustment reduce usage costs. Through the multi-level adjustment and modular design of the adjustment components, the problems of poor adaptability and inconvenient adjustment of traditional devices are solved. The internal threaded ring moves up and down along the threaded column to adapt to well slots of different depths, and the spacing of the adjustment components can be precisely controlled. The threaded rod, together with the square tube, adjusts the extension length of the support block to adapt to different well diameters, thus expanding the adaptability range. There is no need to customize different specifications of brackets, reducing customization costs. The support block and the positioning rod are plugged together, which shortens the installation time of a single component. Small well diameters can be disassembled for installation, improving the coverage of adaptable scenarios. 2. The device is reinforced and has strong stability, extending its service life. Relying on double-layer support components and multi-point collaborative support, it improves the insufficient strength and poor stability of traditional devices. The first support component and the second support component form a double-layer reinforcement, which increases the reinforcement strength. The design of the support block contacting the well wall reduces the pressure per unit area and avoids secondary damage to the well wall. The support rod is connected with the slot and groove, and the disassembly and replacement do not require cutting, which shortens the maintenance time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a tailings dam drainage well wall reinforcement and anti-fall-off device proposed in this utility model; Figure 2 This is a schematic diagram of the adjusting component structure of a tailings dam drainage well wall reinforcement and anti-fall-off device proposed in this utility model; Figure 3 This is a schematic diagram of the second support component of a tailings dam drainage well wall reinforcement and anti-fall-off device proposed in this utility model; Figure 4 This is a schematic diagram of the first support component of a tailings dam drainage well wall reinforcement and anti-fall-off device proposed in this utility model.

[0015] In the diagram: 1. Mounting bracket; 2. Threaded post; 3. Ground cone; 4. Adjustment assembly; 5. First support assembly; 6. Second support assembly; 7. Internal threaded ring; 8. Square tube; 9. Threaded rod; 10. Support block; 11. Support ring; 12. Positioning rod; 13. Slot; 14. Slot; 15. Support rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0017] Reference Figure 1-4A tailings dam drainage well wall reinforcement and anti-fall-off device includes a mounting frame 1. A threaded column 2 is screwed to the bottom of the mounting frame 1. An adjusting component 4 is screwed to the rod wall of the threaded column 2 and arranged vertically. The adjusting components 4 are connected to a first support component 5 and a second support component 6. The adjusting component 4 includes an internal threaded ring 7, a square tube 8 evenly distributed along the annular outer wall of the internal threaded ring 7, a threaded rod 9 screwed to one end of the square tube 8, and a support block 10 rotatably connected to one end of the threaded rod 9. The first support component 5 and the second support component 6 both include a support ring 11 and a positioning rod 12 evenly distributed along the annular bottom of the support ring 11. The first support component 5 and the second support component 6 are both connected to support rods 15 evenly distributed along the annular.

[0018] The mounting frame 1 has slots on both sides of its top. The mounting frame 1 is fixed to the wellhead via these slots and bolts. The mounting frame 1 is welded from Q355 steel, measuring 1500×500×100mm. The slots are 300mm long and 20mm wide, and the surface is coated with epoxy zinc-rich paint for corrosion protection. The bolts are made of stainless steel, M20×100mm, and are equipped with spring washers to prevent loosening. A ground cone 3 is welded to the bottom of the threaded post 2, and is inserted into the bottom of the well trench. The threaded post 2 is made of 40Cr steel, with a diameter of 50mm and a length of 2-5m customized according to the well depth, and has rolled threads on its surface. The ground cone 3 is made of 45# steel, with a cone angle of 45°, a length of 300mm, and a hardened surface for easy insertion and fixing in the soil or rock. The top of the support block 10 has an insertion hole, which is connected to the positioning rod 12. The support block 10 is made of wear-resistant cast iron and has a size of 150×100×80mm. A rubber buffer pad is bonded to the side that contacts the well wall. The insertion hole has a diameter of 25mm, the positioning rod 12 has a diameter of 24mm, and the fit gap is 0.5mm to ensure a stable connection.

[0019] In the first support assembly 5, the top of the support ring 11 has evenly distributed slots 14 along the circumference, which are inserted into the support rod 15. The support ring 11 is made of Q355 steel, rolled and welded, with a diameter of 500-1500 mm and a thickness of 20 mm. The slots 14 are evenly distributed along the circumference and are interference-fitted with the support rod 15. In the second support assembly 6, the outer wall of the support ring 11 has evenly distributed slots 13 along the circumference, which are inserted into the support rod 15. The slots 13 are evenly distributed along the circumference and correspond to the slots 14 vertically. The support rod 15 is made of 40Cr material, with a diameter of 28 mm and a length adjustable according to the well depth. It is chrome-plated for rust prevention. The square tube 8 is made of seamless steel pipe and is fully welded to the internal threaded ring 7, which is evenly distributed along the circumference. The threaded rod 9 is made of 40Cr material, with a diameter of 30 mm, and is threaded into the square tube 8. A rotating handle is welded to one end for easy adjustment of the extension length.

[0020] Mounting bracket and threaded post assembly: Mounting bracket 1 is made of Q355 steel plate, cut and welded, and then subjected to 72 hours of aging treatment to relieve stress. Strip-shaped openings (300mm length, 20mm width) are machined on both sides of the top. After sandblasting, two layers of epoxy zinc-rich paint (dry film thickness ≥100μm) are applied. Threaded post 2 is made of 40Cr round steel with rolled threads (5mm pitch), and its length is customized according to the well depth (e.g., 3m). The bottom is fully welded to the ground cone 3. After welding, no cracks are detected. The surface of the ground cone 3 is hardened to a hardness of HRC50-55. The top of threaded post 2 is screwed to the pre-set threaded hole at the bottom of mounting bracket 1, tightened, and then spot-welded for reinforcement, ensuring that the perpendicularity of threaded post 2 to mounting bracket 1 is ≤0.02mm / m.

[0021] Adjustment component processing and assembly: The internal threaded ring 7 is machined from 45# steel, with an inner diameter of 50mm (fitting the threaded post 2) and a thickness of 30mm. The inner hole is threaded. The square tube 8 is made of seamless steel pipe (diameter 40mm, wall thickness 5mm), cut into 150mm length segments, and eight segments are evenly distributed around the internal threaded ring 7. These segments are fully welded to the internal threaded ring 7, with a weld leg height ≥8mm, ensuring that the axis of the square tube 8 is radially aligned with the internal threaded ring 7. The threaded rod 9 is threaded (pitch 4mm), with a rotating handle (length 100mm) welded to one end. The other end is rotatably connected to the support block 10 via a deep groove ball bearing (model 6206). The bearing is axially fixed to ensure that the support block 10 does not rotate when the threaded rod 9 rotates.

[0022] Support component processing and assembly: The support ring 11 is made of Q355 steel plate according to the well diameter (e.g., 1000mm), rolled and welded. After welding, the roundness is corrected by a plate rolling machine, with an error ≤3mm. The surface is sprayed with epoxy zinc-rich paint. The positioning rod 12 is made of 45# steel round bar (diameter 24mm), cut into 100mm long segments, and 8 are evenly distributed in a ring around the bottom of the support ring 11. They are fully welded to the support ring 11 to ensure that the verticality of the positioning rod 12 is ≤0.02mm. The top of the support ring 11 of the first support component 5 is machined with a groove 14 (depth 50mm, width 30mm) corresponding to the position of the positioning rod 12; the outer wall of the support ring 11 of the second support component 6 is machined with a slot 13 (depth 40mm, width 30mm) aligned vertically with the groove 14.

[0023] Assembly of the support rod and connecting structure: The support rod 15 is made of 40Cr round steel (28mm in diameter), and its length is customized according to the distance between the two support components (e.g., 1m). The surface is chrome-plated (5μm thick). One end of the support rod 15 is inserted into the slot 14 of the first support component 5 and secured with a set screw to ensure a firm connection. The other end is inserted into the slot 13 of the second support component 6, allowing 5mm of movement to accommodate temperature deformation. The coaxiality of the support ring 11 and the support rod 15 is checked; the error is ≤5mm to ensure uniform force distribution.

[0024] Overall pre-assembly and commissioning of the device: Screw the two adjusting components 4 onto the upper and lower positions of the threaded column 2, respectively, with the spacing set according to the well depth (e.g., 1.5m). Insert the positioning rod 12 of the first support component 5 into the insertion hole of the upper adjusting component 4 support block 10, and insert the positioning rod 12 of the second support component 6 into the insertion hole of the lower adjusting component 4 support block 10, ensuring the support ring 11 is horizontal. Rotate the handle of the threaded rod 9 to adjust the extension length of the support block 10, simulating the well wall support state. The extension error of each support block 10 should be ≤3mm. Test the stability of the support block 10 and the support ring 11 to ensure there is no loosening.

[0025] On-site installation and performance testing: The device was transported to the tailings dam drainage trench site and fixed to the concrete foundation of the trench opening using bolts and the slot of the mounting frame 1. After tightening the bolts, the flatness of the mounting frame 1 was tested to be ≤2mm. The threaded column 2 and the ground cone 3 were slowly lowered into the trench. With the assistance of hoisting equipment, the ground cone 3 was inserted into the bottom soil and rock of the trench to a depth ≥200mm. The positions of the internal threaded rings 7 of the upper and lower adjusting components 4 were adjusted, and then the threaded rod 9 was rotated to make the support block 10 fit against the trench wall. The contact pressure of each support block 10 was ≥10kN. After installation, a load test was conducted. When the simulated lateral pressure of the trench wall was 0.5MPa, the maximum deformation of the device was ≤2mm. After all indicators passed, the device was put into use.

[0026] Working principle Pre-installation of the device and site preparation: Based on the actual well diameter (500-1500mm) and well depth (2-5m) of the tailings dam drainage well, customize the specifications of the threaded column 2, support ring 11, and support rod 15. Complete the pre-installation of the device on the ground: Screw the adjusting component 4 to the threaded column 2; connect the support component to the support block 10 via the positioning rod 12; connect the two layers of support rings 11 with the support rod 15; adjust the extension length of the support block 10 to ensure it matches the well diameter. Clean the area around the wellhead, level the concrete foundation, and reserve the fixing bolt holes for the mounting frame 1.

[0027] Core Structure Fixing and Positioning: The pre-assembled device is hoisted to the wellhead using hoisting equipment. The position of mounting frame 1 is adjusted so that the threaded column 2 is coaxial with the well trench. Mounting frame 1 is then fixed to the wellhead foundation using strip-shaped openings and stainless steel bolts. The bolts are tightened and the spring washers are locked to prevent loosening. The threaded column 2 is slowly lowered until the ground cone 3 contacts the bottom of the well trench. Downward pressure is applied using hoisting equipment to insert the ground cone 3 into the soil and rock by ≥200mm, thus fixing the bottom of the device and preventing overall displacement.

[0028] Precise positioning and support of the adjustment components: Rotate the internal threaded rings 7 of the upper and lower adjustment components 4 to move them up and down along the threaded post 2 to the preset reinforcement positions (such as well depths of 1m and 2.5m). The self-locking function of the internal threaded rings 7 ensures that the position is fixed. Rotate the threaded rod 9 of each adjustment component 4 respectively. By rotating the handle, the threaded rod 9 is driven to extend along the square tube 8, which moves the support block 10 towards the well wall until the rubber buffer pad is completely in contact with the well wall. The contact pressure of each support block 10 is monitored by a pressure sensor to ensure that it reaches more than 10kN, so as to achieve multi-point uniform support of the well wall.

[0029] Double-layer support and overall reinforcement: The first support component 5 and the second support component 6 are stably connected to the support block 10 via the positioning rod 12. The two support rings 11 form a double-layer reinforcement structure along the well depth direction, dispersing the lateral pressure on the well wall. The support rod 15 connects the two support rings 11 to form a spatial truss structure, improving the overall deformation resistance. When the support span is 2m, the deflection deformation is controlled within 2mm. The surface contact design of the support block 10 and the rubber buffer pad increase friction to prevent the device from sliding and avoid excessive local pressure that could damage the well wall.

[0030] Maintenance, Adjustment, and Replacement: During use, periodically check the fit of the support block 10. If gaps appear due to soil and rock settlement, simply adjust the extension of the support block 10 by rotating the threaded rod 9; complete disassembly is not required. When replacing the support assembly, first loosen the set screw of the support rod 15, pull out the support rod 15, and then lift the support ring 11 upwards to disengage the positioning rod 12 from the insertion hole of the support block 10. This completes the disassembly. After replacing the new assembly, repeat the above installation and adjustment steps. Maintenance is convenient and efficient, ensuring the long-term stable operation of the drainage well trench.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for reinforcing and preventing detachment of the well wall of a tailings dam drainage well, comprising a mounting frame (1), characterized in that, The bottom of the mounting bracket (1) is screwed with a threaded post (2), and the rod wall of the threaded post (2) is screwed with an adjustment component (4) arranged vertically. The adjustment component (4) arranged vertically is connected to a first support component (5) and a second support component (6). The adjustment component (4) includes an internal threaded ring (7), a square tube (8) arranged at equal intervals along the annular outer wall of the internal threaded ring (7), a threaded rod (9) screwed to one end of the square tube (8), and a support block (10) rotatably connected to one end of the threaded rod (9). The first support component (5) and the second support component (6) both include a support ring (11) and a positioning rod (12) arranged at equal intervals along the annular bottom of the support ring (11). The first support component (5) and the second support component (6) both are connected to support rods (15) arranged at equal intervals along the annular.

2. The tailings dam drainage well wall reinforcement and anti-fall-off device according to claim 1, characterized in that, The mounting bracket (1) has slots on both sides of its top, and the mounting bracket (1) is fixed to the wellhead by the slots and bolts.

3. The tailings dam drainage well wall reinforcement and anti-fall-off device according to claim 1, characterized in that, The bottom of the threaded column (2) is welded and fixed with a ground cone (3), and the ground cone (3) is inserted into the bottom of the well slot.

4. The tailings dam drainage well wall reinforcement and anti-fall-off device according to claim 1, characterized in that, The top of the support block (10) is provided with an insertion hole, and the insertion hole and the positioning rod (12) are connected in a plug-in fit.

5. The tailings dam drainage well wall reinforcement and anti-fall-off device according to claim 1, characterized in that, The top of the support ring (11) in the first support assembly (5) is provided with equally spaced slots (14) along the ring, and the slots (14) and the support rod (15) are connected in a plug-in fit.

6. The tailings dam drainage well wall reinforcement and anti-fall-off device according to claim 1, characterized in that, In the second support assembly (6), the outer wall of the support ring (11) is provided with equally spaced slots (13) along the ring, and the slots (13) and the support rod (15) form a plug-in movable fit.

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