Tailings pond drainage culvert anti-leakage reinforcing structure

Abstract

This utility model discloses a seepage-proof reinforcement structure for tailings dam drainage culverts, including a drainage culvert body. Inside the drainage culvert body are individually assembleable thin-walled steel pipe sections, with grouting ports pre-installed between the thin-walled steel pipe sections and the drainage culvert body. The upper half of the thin-walled steel pipe sections has a reinforced mesh formed by longitudinally and transversely welded No. 8 threaded steel bars. The bottom of the thin-walled steel pipe sections has circumferentially arranged retractable rollers. A socket-type rubber connector is wrapped around the ends of the thin-walled steel pipe sections. The socket-type rubber connector has a pre-fabricated pressure-bearing elastic self-locking buckle at the end of the thin-walled steel pipe section, along with a matching pressure-bearing elastic self-locking buckle latch. This utility model provides initial reinforcement of the original drainage culvert by setting multiple assembleable thin-walled steel pipe sections inside the drainage culvert, followed by reinforcement and seepage control through grouting. This significantly reduces internal construction work and improves construction safety.

Description

Technical Field

[0001] This utility model relates to the field of drainage culvert technology for tailings ponds in mines, specifically a seepage-proof and reinforced structure for drainage culverts in tailings ponds. Background Technology

[0002] The primary function of a tailings dam's flood discharge system is to control the safe and effective discharge of floodwaters from the catchment area, preventing dam failures caused by flooding. This plays a crucial role in the safe operation of the tailings dam. Currently, most tailings dams with large catchment areas employ two separate flood discharge systems: one external and one internal. The external system typically uses intercepting ditches, drainage culverts, or drainage tunnels to reduce rainwater runoff. For tailings dams with large surrounding catchment areas, the safety of the external system is paramount. Any safety hazards, such as damage to drainage culvert structures, require timely remediation. Initially, structural damage is often addressed with supporting structures and grouting reinforcement. However, due to the relatively enclosed nature of drainage culverts, limited working space, and long distances along their length, current reinforcement methods primarily rely on manual repairs. This method is inefficient, prone to cracking later, and fails to fundamentally solve the problem of seepage prevention and reinforcement of drainage culverts. Utility Model Content

[0003] The purpose of this utility model is to provide a seepage-proof and reinforced structure for tailings dam drainage culverts to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a seepage-proof reinforcement structure for tailings dam drainage culverts, comprising a drainage culvert body, wherein the drainage culvert body contains single, assembleable thin-walled steel pipe sections, and upstream grouting ports, downstream grouting ports, upstream bottom grouting ports, and downstream bottom grouting ports are pre-installed between the thin-walled steel pipe sections and the drainage culvert body; the upper half of the thin-walled steel pipe section has a retaining mesh formed by longitudinally and transversely welding No. 8 threaded steel bars, and the bottom of the thin-walled steel pipe section is circumferentially arranged with retractable rollers. The thin-walled steel pipe section has a socket-type rubber connector wrapped around its ends. The thin-walled steel pipe section includes an insertion section end and a socket section end. The socket-type rubber connector is divided into an insertion section rubber connector and a socket section rubber connector. The insertion section rubber connector wraps around the insertion section end, and the socket section rubber connector wraps around the socket section end. The insertion section rubber connector has a pre-fabricated pressure-bearing elastic self-locking buckle on the insertion section end, and the socket section rubber connector has a pressure-bearing elastic self-locking buckle on the socket section end.

[0005] Preferably, the telescopic rollers of the pipe section are arranged circumferentially along the bottom of the thin-walled steel pipe section at an angle θ=30°-60°. The telescopic rollers of the pipe section are composed of steel balls with a diameter φ=3-5cm, protective pads and telescopic rods. The protective pads are set at the contact position between the steel balls and the thin-walled steel pipe section. The thin-walled steel pipe section is connected to the steel balls through the telescopic rods.

[0006] Preferably, the pipe section retaining wall reinforcement mesh is made of longitudinal and transverse steel bars welded together, and the mesh size of the pipe section retaining wall reinforcement mesh is 10cm*10cm-20cm*20cm.

[0007] Preferably, the wrapping length of the insert section rubber connecting ring is 50cm-100cm, and the length of the socket section rubber connecting ring is 100cm-200cm, wherein the wrapping length on the socket section pipe joint port is 50cm-100cm, and the exposed length of the socket is 50cm-100cm.

[0008] Preferably, the pressure-bearing elastic self-locking buckle is a ball bearing with a diameter of φ=3-5cm, located 30cm-50cm from the port of the rubber connecting ring in the insertion section. The pressure-bearing elastic self-locking buckle is retractable, arranged circumferentially on the same cross section, with a circumferential angle θ=30°-90° and a quantity n=4-12. A pressure-bearing elastic self-locking buckle slot is provided 20cm-50cm from the exposed port of the rubber connecting ring in the socket section, with a slot diameter Φ=ball bearing diameter φ+(1-3)mm.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] This tailings dam drainage culvert anti-seepage reinforcement structure utilizes the uniform size of the drainage culverts. Multiple assembleable thin-walled steel pipe sections are installed inside the drainage culverts to initially reinforce the original drainage culverts. Subsequently, grouting is used to reinforce and prevent leakage on the basis of the original drainage culverts. This greatly reduces the construction work inside the pipes and improves construction safety. Compared with traditional local repair methods, it greatly eliminates potential safety hazards and has the advantages of strong operability and reliable construction. Attached Figure Description

[0011] Figure 1 This is a longitudinal view of the anti-seepage reinforcement structure of the tailings dam drainage culvert of this utility model;

[0012] Figure 2 This is a detailed assembly drawing of the thin-walled steel pipe section of this utility model;

[0013] Figure 3 This is a side view of the thin-walled steel pipe section of this utility model.

[0014] In the diagram: 1. Drainage culvert body; 2. Thin-walled steel pipe section; 201. Inserted section pipe section port; 202. Socketed section pipe section port; 3. Pipe section telescopic roller; 301. Steel ball; 302. Protective gasket; 303. Telescopic rod; 4. Pipe section wall reinforcement mesh; 401. Longitudinal reinforcement; 402. Transverse reinforcement; 5. Socket-type rubber connector; 501. Inserted section rubber connector; 502. Socketed section rubber connector; 9. Pressure-bearing elastic self-locking buckle; 10. Upstream pipe top grouting port; 11. Downstream pipe top grouting port; 12. Upstream pipe bottom grouting port; 13. Downstream pipe bottom grouting port. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3 This embodiment of a tailings dam drainage culvert anti-seepage reinforcement structure includes a drainage culvert body 1. Inside the drainage culvert body 1, there is a single-section, assembleable thin-walled steel pipe section 2. The thin-walled steel pipe section 2 is a thin-walled steel pipe with an inner diameter denoted as R and a wall thickness denoted as δ. The length of a single section is L = 2-5m. The wall thickness δ that meets the strength requirements is calculated according to relevant regulations such as the "Design Code for Pressure Steel Pipes of Water Conservancy and Hydropower Projects" (SLT281-2020).

[0017] The upper half of the thin-walled steel pipe section 2 is welded with No. 8 threaded steel bars in both directions to form a pipe section protective wall mesh 4. The pipe section protective wall mesh 4 is formed by interlacing longitudinal steel bars 401 and transverse steel bars 402. The mesh size of the pipe section protective wall mesh 4 is 10cm*10cm-20cm*20cm.

[0018] The bottom of the thin-walled steel pipe section 2 is circumferentially arranged with retractable rollers 3. The angle of the retractable rollers 3 circumferentially arranged along the bottom of the thin-walled steel pipe section 2 is θ=30°-60°. The retractable rollers 3 are composed of steel balls 301 with a diameter of φ=3-5cm, protective pads 302 and telescopic rods 303. The protective pads 302 are set at the contact position between the steel balls 301 and the thin-walled steel pipe section 2. The thin-walled steel pipe section 2 is connected to the steel balls 301 through the telescopic rods 303. The retractable rollers 3 at the bottom facilitate the movement of a single thin-walled steel pipe section 2 inside the drainage culvert body 1 (this is a self-made roller structure, the principle of which is similar to the existing ground wheel and traveling wheel structure with shock absorption, which is quite common and will not be described in detail here).

[0019] A socket-type rubber connecting ring 5 is wrapped around the end of the thin-walled steel pipe section 2. The thin-walled steel pipe section 2 includes an insertion section pipe section end 201 and a socket section pipe section end 202. The socket-type rubber connecting ring 5 is divided into an insertion section rubber connecting ring 501 and a socket section rubber connecting ring 502. The insertion section rubber connecting ring 501 is wrapped around the insertion section pipe section end 201, and the socket section rubber connecting ring 502 is wrapped around the socket section pipe section end 202. The wrapping length of the insertion section rubber connecting ring 501 is 50cm-100cm, and the length of the socket section rubber connecting ring 502 is 100cm-200cm. The wrapping length on the socket section pipe section end 202 is 50cm-100cm, and the exposed length of the socket is 50cm-100cm.

[0020] The insertion section rubber connecting ring 501 has a pre-fabricated pressure-bearing elastic self-locking buckle 9 on the insertion section pipe section port 201. The socket section rubber connecting ring 502 has a pressure-bearing elastic self-locking buckle slot on the socket section pipe section port 202. The pressure-bearing elastic self-locking buckle 9 is a ball bearing with a diameter of φ=3-5cm, located 30cm-50cm from the port of the insertion section rubber connecting ring 501. The pressure-bearing elastic self-locking buckle 9 is retractable and arranged circumferentially on the same cross section with a circumferential angle θ=30°-90° and a quantity n=4-12. The socket section rubber connecting ring 502 has a pressure-bearing elastic self-locking buckle slot 20cm-50cm from the exposed port. The slot diameter Φ=ball bearing diameter φ+(1-3)mm.

[0021] In actual use, multiple single thin-walled steel pipe sections 2 are initially connected inside the drainage culvert body 1 by means of socket-type rubber connecting rings 5. Finally, multiple single thin-walled steel pipe sections 2 are assembled by means of pressure-bearing elastic self-locking buckles 9 and bayonet docking, thereby initially forming a reinforced structure inside the drainage culvert body 1.

[0022] Subsequently, grouting is completed through the upstream pipe top grouting port 10, downstream pipe top grouting port 11, upstream pipe bottom grouting port 12, and downstream pipe bottom grouting port 13 reserved between the thin-walled steel pipe section 2 and the drainage culvert body 1, to achieve the purpose of secondary seepage prevention and reinforcement. Specifically, the upstream pipe top grouting port 10 is opened and the upstream pipe bottom grouting port 12 is closed during the first grouting. Grouting is started from the upstream pipe top grouting port 10. When grout comes out of the downstream pipe bottom grouting port 13, the downstream pipe bottom grouting port 13 is closed and grouting continues until grout comes out of the downstream pipe top grouting port 11. The grouting pressure is 0.25MPa, and the grouting stops at 0.75MPa. The orifice is closed and the grouting is done from bottom to top in an upward blocking grouting method. The grouting starts with low pressure and a large injection volume and ends with final pressure and a small injection volume. The final grouting pressure is not less than the design pressure. It is required that the permeability coefficient of the grout body is not less than 1 L and the strength of the grout body is not less than 2 MPa after grouting. After the first grouting is completed, wait for the grout to solidify for at least 24 hours. Then, close the upstream top grouting port 10 and open the upstream bottom grouting port 12. Grouting begins from the upstream bottom grouting port 12. When grout emerges from the downstream bottom grouting port 13, close the downstream bottom grouting port 13 and continue grouting until grout emerges from the downstream top grouting port 11, completing the second grouting. Finally, workers enter the drainage culvert 1 to inspect the reinforcement quality along the line and perform any local repairs.

[0023] In summary, this utility model's tailings dam drainage culvert anti-seepage reinforcement structure achieves initial reinforcement of the original drainage culvert body 1 by incorporating multiple single-section, splicable thin-walled steel pipe sections 2 within the drainage culvert body 1. The bottom of each thin-walled steel pipe section 2 features circumferentially arranged telescopic rollers 3, facilitating movement within the drainage culvert body 1 and enabling easy splicing by workers. The welded reinforcing mesh 4 at the top enhances the compressive strength of the thin-walled steel pipe section 2. Multiple thin-walled steel pipe sections 2 are connected and fixed using socket-type rubber connecting rings 5 ​​and pressure-bearing elastic self-locking buckles 9, making operation convenient and labor-saving. After the multiple thin-walled steel pipe sections 2 are spliced, secondary grouting is performed through designated grouting ports, further improving the connection strength between the thin-walled steel pipe sections 2 and the drainage culvert body 1, thereby achieving the purpose of anti-seepage reinforcement.

[0024] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A seepage-proof reinforcement structure for tailings dam drainage culverts, comprising a drainage culvert body (1), characterized in that: The drainage culvert body (1) is equipped with a single, assembleable thin-walled steel pipe section (2). An upstream grouting port (10), a downstream grouting port (11), an upstream bottom grouting port (12), and a downstream bottom grouting port (13) are pre-installed between the thin-walled steel pipe section (2) and the drainage culvert body (1). The upper half of the thin-walled steel pipe section (2) is longitudinally and transversely welded with No. 8 threaded steel bars to form a pipe section protective mesh (4). The bottom of the thin-walled steel pipe section (2) is circumferentially arranged with retractable rollers (3). A socket-type rubber connecting ring (5) is wrapped around the port of the thin-walled steel pipe section (2). The thin-walled steel pipe section (2) includes... The insertion section pipe joint port (201) and the socket section pipe joint port (202) are provided. The socket-type rubber connecting ring (5) is divided into an insertion section rubber connecting ring (501) and a socket section rubber connecting ring (502). The insertion section rubber connecting ring (501) is wrapped along the insertion section pipe joint port (201), and the socket section rubber connecting ring (502) is wrapped along the socket section pipe joint port (202). The insertion section rubber connecting ring (501) has a pre-fabricated pressure-bearing elastic self-locking buckle (9) on the insertion section pipe joint port (201), and the socket section rubber connecting ring (502) has a pressure-bearing elastic self-locking buckle on the socket section pipe joint port (202).

2. The anti-seepage reinforcement structure for tailings dam drainage culverts according to claim 1, characterized in that: The retractable roller (3) of the pipe section is arranged circumferentially along the bottom of the thin-walled steel pipe section (2) at an angle θ=30°-60°. The retractable roller (3) of the pipe section is composed of steel balls (301) with a diameter φ=3-5cm, protective pads (302) and telescopic rods (303). The protective pads (302) are set at the contact position between the steel balls (301) and the thin-walled steel pipe section (2). The thin-walled steel pipe section (2) is connected to the steel balls (301) through the telescopic rods (303).

3. The anti-seepage reinforcement structure for tailings dam drainage culverts according to claim 1, characterized in that: The pipe section retaining wall reinforcement mesh (4) is made of longitudinal steel bars (401) and transverse steel bars (402) welded together, and the mesh size of the pipe section retaining wall reinforcement mesh (4) is 10cm*10cm-20cm*20cm.

4. The anti-seepage reinforcement structure for tailings dam drainage culverts according to claim 1, characterized in that: The length of the insert section rubber connecting ring (501) is 50cm-100cm, and the length of the socket section rubber connecting ring (502) is 100cm-200cm. The length of the insert section rubber connecting ring (502) on the socket section pipe joint (202) is 50cm-100cm, and the exposed length of the socket is 50cm-100cm.

5. The tailings dam drainage culvert anti-seepage reinforcement structure according to claim 4, characterized in that: The pressure-bearing elastic self-locking buckle (9) is a ball bearing with a diameter of φ=3-5cm, located 30cm-50cm from the port of the insertion section rubber connecting ring (501). The pressure-bearing elastic self-locking buckle (9) is retractable and arranged circumferentially on the same cross section with a circumferential angle of θ=30°-90° and a quantity of n=4-12. The pressure-bearing elastic self-locking buckle slot is set 20cm-50cm from the exposed port of the socket section rubber connecting ring (502), and the slot diameter Φ=ball bearing diameter φ+(1-3)mm.

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