Water intake culvert pipe joint leakage repairing device

Abstract

The utility model provides a water intaking culvert pipe joint leakage repairing device, which belongs to the technical field of water intaking culvert pipe joint leakage repairing, and comprises an elastic piece, a U-shaped stainless steel cover plate and a flexible grouting layer, the elastic piece is used for sealing one end of the repair joint close to the sediment side; the U-shaped stainless steel cover plate is used for sealing the end, away from the sediment side, of the repair joint. The flexible grouting layer is arranged in the repair joint, and a filling cavity defined by the U-shaped stainless steel cover plate, the inner wall of the repair joint and the elastic piece is filled with the flexible grouting layer; the U-shaped stainless steel cover plate comprises a body part and a bent part; the U-shaped stainless steel cover plate is fixedly connected with the inner wall of the water intake culvert pipe through the body part; the bent part is formed by protruding the body part towards the interior of the repair seam. The problems that an existing leakage repairing effect is poor, damage is prone to occurring, and durability is short are solved, on the basis that the original structure of the culvert pipe is not damaged, erosion damage areas on the two sides of a repairing joint in the culvert pipe can be effectively repaired, and the waterproof sealing effect and the structural strength are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water taking culvert joint leak repair, especially relates to a water taking culvert joint leak repair device. BACKGROUND

[0002] At present, the conventional underwater culvert joint treatment scheme mainly has three kinds: one is that rubber water stop cover is pasted at the culvert joint, and flexible repair treatment is carried out, so as to achieve sealing effect;Two is that the joint part is dredged and blocked, and then the process of supporting formwork and cast-in-place concrete is used for treatment;Three is that the culvert mouth is blocked by building cofferdam, air bag blocking and underwater wall blocking, the inside water is emptied, and a large range of land is formed, so as to change underwater construction into land construction, and internal repair is carried out under dry land conditions. The above construction method, the conventional underwater repair construction technology is mature, but the repair effect cannot be guaranteed, and the long-term quality effect cannot be ensured;The cofferdam area used in the cofferdam, air bag blocking process is large, the cost is high, and due to the large volume and weight of the cofferdam, it is not easy to operate, which leads to large construction difficulty and low construction efficiency.

[0003] The conventional flexible repair has the following problems: (1) complex environment restriction: in the turbulent water flow and poor visibility underwater environment, the difficulty of implementing flexible repair increases, which may affect the construction precision and efficiency;(2) limitation to damage degree: for structural damage or serious cracks, the anti-seepage cover sheet may only provide a temporary solution, and cannot fundamentally solve the structural safety problem;(3) durability problem: under extreme hydrological conditions or long-term immersion environment, the cover sheet material may gradually age and decompose, affecting its long-term sealing performance;(4) quality control difficulty: it is difficult to carry out real-time quality monitoring for underwater operation, whether the flexible material is filled and brushed uniformly and whether the sealing is completely effective cannot be verified immediately, which may lead to problems in the later period;(5) inconvenience of maintenance and inspection: once the flexible repair structure is installed, its internal condition is not easy to check, and if hidden damage occurs, diagnosis and repair will be more complex.

[0004] Underwater concrete pouring has the following problems: (1) Difficulty in quality control: The underwater environment is complex, and factors such as insufficient light, water flow and water pressure will affect the uniformity of the concrete mixture and the pouring quality, making quality control more difficult; (2) Complex formwork installation: Installing formwork in an underwater environment is a technical challenge that requires professional divers to operate, and is affected by water flow and visibility, making installation accuracy and stability difficult to ensure; (3) Difficulty in positioning and calibration: It is very difficult to ensure that the formwork is placed according to the precise design position and angle. Incorrect positioning will directly affect the quality and dimensional accuracy of the cast structure; (4) Concrete pouring control: Compared with land, it is more difficult to control the flow, diffusion and density of concrete during underwater formwork pouring, which can easily lead to quality problems such as honeycombs and voids; (5) Long construction period: From formwork production, transportation, installation to concrete pouring, each step takes longer in an underwater environment, affecting the progress of the entire project; (6) Environmental impact: The construction process may cause disturbances to the surrounding water environment, including increased suspended matter and changes in water quality. Measures need to be taken to mitigate environmental impacts.

[0005] Airbag plugging has the following drawbacks: it only works when there's no water flowing, no incoming water upstream, the water level doesn't change after plugging, and it's a temporary method. Underwater wall plugging has the following drawbacks: it takes longer to construct than airbag plugging, requires underwater demolition, and is more dangerous. Cofferdam construction also has the following drawbacks: it's only suitable for shallow water depths and slow currents, requires a large footprint, and traditional cofferdams are complex, expensive, and difficult to implement. Utility Model Content

[0006] The details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0007] The utility model proposes a water intake culvert joint repair leakage repair device, which solves the technical problems of poor leakage repair effect, easy damage and short durability in the existing technology. It can effectively repair the erosion and damage areas on both sides of the repair joint inside the culvert without destroying the original structure of the culvert, and can ensure both the waterproof sealing effect and the structural strength of the structural seam.

[0008] The utility model discloses a device for repairing leakage of a water intake culvert joint, comprising: an elastic member, a U-shaped stainless steel cover plate, and a flexible grouting layer; the elastic member is arranged in the repair joint close to the mud and sand side outside the water intake culvert and abuts against the repair joint, and is used to close the end of the repair joint close to the mud and sand side; the U-shaped stainless steel cover plate is fixedly connected to the inner wall of the water intake culvert, and is used to close the end of the repair joint away from the mud and sand side; the flexible grouting layer is arranged in the repair joint, and is filled in a filling cavity surrounded by the U-shaped stainless steel cover plate, the inner wall of the repair joint and the elastic member; the U-shaped stainless steel cover plate comprises a main body and a bent portion; the U-shaped stainless steel cover plate is fixedly connected to the inner wall of the water intake culvert through the main body; the bent portion is formed by the main body protruding toward the inside of the repair joint.

[0009] In some embodiments, a plurality of grouting holes for injecting flexible grouting into the filling cavity are provided at the main body portion connected to the repaired seam.

[0010] In some embodiments, the invention further comprises a plurality of plugs for sealing the grouting holes after the filling cavity is filled with the flexible grouting.

[0011] In some embodiments, the grouting hole is provided with an internal thread.

[0012] In some embodiments, the main body is fixedly connected to the inner wall of the water intake culvert via a plurality of fixing members, and each of the fixing members further comprises a stainless steel expansion bolt and a nut.

[0013] In some embodiments, a rubber waterproof gasket is provided between the main body and the inner wall of the water intake culvert.

[0014] In some embodiments, a stainless steel strip is provided between the main body and the nut.

[0015] In some embodiments, the diameter d of the stainless steel expansion bolt is 16 mm, and the minimum anchoring depth is 80 mm.

[0016] In some embodiments, the spacing between adjacent stainless steel expansion bolts is 50 cm.

[0017] In some embodiments, an adhesive layer is provided between the inner wall of the repair seam and the elastic member, and between the main body and the inner wall of the water intake culvert.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model provides a water intake culvert seam repair leakage repair device. On the one hand, it can effectively repair the erosion damage areas on both sides of the repair seam inside the culvert without destroying the original structure of the culvert, which can not only ensure the waterproof sealing effect, but also ensure the structural strength of the structural seam, and at the same time meet the expansion and contraction requirements of the structural seam; on the other hand, this repair structure forms a closed structure along the repair seam of the culvert, does not need to rely on, and is self-contained. The strength of the structure itself and the force of the bolts can resist the pressure difference between the inside and outside of the culvert, so that it has strong resistance to high-speed water flow pulsation pressure damage and strong anti-scouring ability. After adding grouting, flexible filler slurry is poured, which has strong adaptability to deformation and ensures better sealing of the repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of a water intake culvert seam repair and leakage repair device provided by an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the layout of a water intake culvert seam repair and leakage repair device provided by an embodiment of the utility model;

[0023] In the above figures: 10, elastic member; 201, main body; 202, bending portion; 30, flexible grouting layer; 40, grouting hole; 501, stainless steel expansion bolt; 502, nut; 60, rubber waterproof gasket; 70, stainless steel pressure strip. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] The present invention provides a device for repairing leakage in water intake culvert joints. Figure 1 This is a schematic diagram of the structure of the water intake culvert seam repair and leakage repair device according to the embodiment of the utility model. Figure 1As shown, the water intake culvert joint leakage repair device at least comprises: an elastic member 10 (preferably, the elastic member 10 is a rubber rod), a U-shaped stainless steel cover plate, and a flexible grouting layer 30; the elastic member 10 is arranged in the joint and abuts against the joint near the sediment side of the outer side of the water intake culvert, and is used to close one end of the joint near the sediment side; the U-shaped stainless steel cover plate is fixedly connected with the inner wall of the water intake culvert, and is used to close one end of the joint away from the sediment side; the flexible grouting layer 30 is arranged in the joint and filled in a filling cavity surrounded by the U-shaped stainless steel cover plate, the inner wall of the joint and the elastic member 10; the U-shaped stainless steel cover plate comprises a body portion 201 and a bent portion 202; the U-shaped stainless steel cover plate is fixedly connected with the inner wall of the water intake culvert through the body portion 201; the bent portion 202 protrudes into the joint from the body portion 201.

[0026] The water intake culvert joint leakage repair device can effectively repair the erosion damage areas on both sides of the joint in the culvert without damaging the original structure of the culvert, can ensure the waterproof sealing effect and the structural strength of the structural joint, and can meet the expansion requirement of the structural joint. Figure 2 As shown, the repair device forms a closed structure along the joint of the culvert, is self-contained, and can resist the pressure difference between the inside and outside of the culvert by the strength of the structure itself and the force of the bolts, so that the repair device has strong resistance to the damage of high-speed water flow pulsating pressure and strong resistance to erosion. After grouting, the flexible filler slurry is injected, the deformation adaptability is strong, and the sealing performance of the repair is better.

[0027] In order to facilitate grouting into the filling cavity and ensure the stability, sealing performance and strength of the overall structure, a plurality of grouting holes 40 for injecting the flexible grouting into the filling cavity are arranged at the body portion 201 connected with the joint. Further, a plurality of plugs are arranged to plug the grouting holes 40 after the filling cavity is filled with the flexible grouting. In order to facilitate the connection of the grouting pipe and the grouting hole 40 and facilitate grouting, the grouting hole 40 is internally threaded.

[0028] In order to further strengthen the fastening of the connection, the body portion 201 is fixedly connected with the inner wall of the water intake culvert through a plurality of fixing members, each fixing member further comprises a stainless steel expansion bolt 501 and a nut 502. A rubber waterproof gasket 60 is arranged between the body portion 201 and the inner wall of the water intake culvert. A stainless steel pressing strip 70 is arranged between the body portion 201 and the nut 502.

[0029] In order to ensure the connection strength, the diameter d of the stainless steel expansion bolt 501 is 16 mm, and the minimum anchoring depth is 80 mm. Further, the distance between adjacent stainless steel expansion bolts 501 is 50 cm.

[0030] In order to ensure the tightness and sealing of the connection, an adhesive layer is provided between the inner wall of the repair seam and the elastic member 10, and between the main body 201 and the inner wall of the water intake culvert.

[0031] The above-mentioned water intake culvert joint repair and leakage repair device has the following characteristics:

[0032] (1) Without destroying the original structure of the culvert, the erosion damage areas on both sides of the culvert repair joints are effectively repaired, which solves the technical problems of poor leakage repair effect, easy damage and short durability in the existing technology. It can not only ensure the waterproof sealing effect, but also ensure the structural strength of the structural joints. At the same time, it can also meet the expansion and contraction requirements of the structural joints and meet the project schedule requirements, ensuring a long warranty period after repair and reliable reinforcement quality.

[0033] (2) This repair structure forms a closed structure along the repair seam of the culvert. It does not need to rely on anything and is self-contained. The strength of the structure itself and the force of the bolts can resist the pressure difference between the inside and outside of the culvert, making it have strong resistance to high-speed water flow pulsation pressure damage and strong anti-scouring ability. After adding the grouting process, flexible filler slurry is poured in, which has strong adaptability to deformation and ensures better sealing of the repair.

[0034] (3) Under the premise of ensuring the integrity of the original structure, a flexible filler slurry is applied for grouting. The unique feature of this slurry is its excellent deformation adaptability. It can maintain good sealing performance under various stresses, achieving a sealing effect similar to multiple insurance, greatly enhancing the durability and waterproof performance of the structure.

[0035] The process of repairing leakage of a water intake culvert using the above-mentioned water intake culvert joint repairing and leakage repairing device includes:

[0036] Underwater cleaning of the repair area → underwater roughening → application of underwater adhesive → filling with rubber rods → installation of U-shaped stainless steel cover → installation of 70 stainless steel strips → underwater grouting → edge sealing → review after completion.

[0037] The main processes are as follows:

[0038] (1) Underwater cleaning of the repair area

[0039] The original water-stop structure at the repaired joint and the silt on the repaired surface were cleaned. Divers used high-pressure water to remove the silt deposited in the repaired joint, and pneumatic shovels and iron shovels were used to remove aquatic organisms attached to the inner wall of the culvert and the repaired joint.

[0040] (2) Underwater flushing

[0041] The diver uses a high-pressure water gun to clean the concrete surface of the inside wall of the repair joint, removing loose concrete and exposing the fresh, solid concrete surface. After completion, the defective area is cleaned to ensure that the newly poured grout adheres firmly to the old concrete.

[0042] (3) Apply underwater adhesive

[0043] The diver again cleans the floating mud and other debris from the culvert repair joint, and applies underwater adhesive to the concrete surface at the contact point with the rubber rod to ensure that the adhesive adheres tightly to the concrete surface and the water stop structure.

[0044] (4) Fill the rubber rod

[0045] According to the structure of the culvert repair joint, fill the rubber rod. The diameter of the rubber rod is slightly larger than the width of the repair joint at the filling site, 2 cm. The rubber rod is pasted along the direction of the repair joint until the entire repair joint is filled. The overlapping part of the rubber rod needs to be treated to make the entire rubber rod connected as a whole without gaps. After the rubber rod is filled, check whether it adheres firmly to the concrete surface and whether the filler is dense to avoid grouting leakage.

[0046] (5) Apply underwater adhesive

[0047] The diver cleans the concrete base surface within a range of 50 cm on both sides of the repair joint inside the culvert, and then applies underwater adhesive within this range to ensure that the adhesive fills and adheres tightly between the rubber water stop gasket 60 of the cover plate structure and the concrete wall.

[0048] (6) U-shaped stainless steel cover plate installation

[0049] Customize U-shaped stainless steel cover plates according to the structure of the culvert joint, a total of 8 sections. Each section is made of 3 mm thick stainless steel plate and is bent according to the angle of the culvert corner. The two side wings of the U-shaped structure extend outward by 20 cm along the end of the culvert. Anchor holes are reserved 15 cm outside the end of the culvert, with a spacing of 50 cm. Grouting holes 40 are reserved on the stainless steel plate between the end of the culvert and the same side U-shaped structure. To facilitate grouting construction, the grouting holes 40 are pre-processed with internal threads for fixing the grouting pipe. Grouting holes 40 are equipped with the same size plugs and are pre-assembled.

[0050] The U-shaped stainless steel cover plate is pre-processed on land and the rubber water stop gasket 60 is pre-attached and fixed at the intersection of the two side wings and the concrete base surface. The thickness of the water stop gasket is determined according to the measured dimensions of the culvert concrete surface, and is expected to be between 1-5 mm.

[0051] During construction, the diver transports the U-shaped stainless steel cover plate to the installation site and adjusts it in place. The U-shaped stainless steel cover plate and the culvert concrete are temporarily fixed by a support rod, and then permanently fixed after the stainless steel pressure strip 70 is installed.

[0052] (7) Installation of stainless steel strip 70

[0053] Two sizes of 70mm stainless steel beading were custom-made, 5mm thick and bent to the culvert corners. Anchor holes were pre-reserved in the 70mm stainless steel beading, spaced 50cm apart. The holes must be aligned with the anchor holes on the U-shaped stainless steel cover and marked on land.

[0054] During construction, divers transferred the stainless steel pressure strip 70 into place, aligned the anchor bolt holes with the anchor bolt holes of the U-shaped stainless steel cover plate according to the marks, and temporarily fixed them after adjustment.

[0055] The U-shaped stainless steel cover plate, stainless steel bead 70, and culvert concrete are anchored together using stainless steel expansion bolts 501. Before inserting the bolts into the holes, fill them with epoxy anchoring agent (10-12 cm deep). The amount of anchoring agent should be sufficient to completely fill the annular space around the bolts once inserted, increasing the bond strength between the bolts and the concrete. Before tightening the nuts 502, apply an underwater epoxy material to the screws and nuts 502 to increase anchoring strength and prevent the bolts from disengaging.

[0056] Considering the long service life of the intake culvert and its inherent bearing capacity, and to avoid structural damage, M16 stainless steel expansion bolts, size 501, were used for fixing the culvert. According to the "Technical Specification for Post-Anchorage of Concrete Structures" (JGJ 145-2013), section 7.1 on structural measures and anchor bolts, when the chemical anchor bolt diameter d = 16mm, the minimum anchoring depth is 80mm. U-shaped stainless steel cover plates were overlapped at the corners.

[0057] (8) Underwater grouting

[0058] After the entire U-shaped stainless steel cover plate for the repaired seam is installed and fixed, grouting begins. The grouting pipe head is processed with external threads. When grouting, simply unscrew the screw plug and connect the grouting pipe to the grouting hole 40.

[0059] Before grouting, perform an air test on the grouting system. Start at one grouting point and proceed clockwise or counterclockwise through each grouting pipe. The test pressure should be low at first and then high. During the air test, tighten all 40-thread plugs in the grouting holes except the air inlet pipe. If there is air leakage, bubbling will occur, and the leaking area needs to be resealed.

[0060] After ensuring there are no leaks in the grouting system, conduct a comprehensive inspection of the entire grouting system. When the grouting equipment is operating normally and the pipelines are unobstructed, begin grouting. Start grouting at the grouting hole 40 in the middle of the culvert bottom, and pour grouting hole by hole along both sides from bottom to top. After pure grouting comes out of the second grouting hole 40 above, tighten the plug of the first grouting hole 40 and move to the second grouting hole 40 above to continue grouting until the entire seam is filled with grout.

[0061] After the diver securely connects the grouting pipe and grouting nozzle, the onshore personnel open the grouting system valves and start the pressure pump. The grouting pressure should start low and then increase. The grouting should be fed slowly, without any hasty acceleration. The grouting is concluded by stopping grouting at 40° from the last grouting hole and maintaining the grouting pressure for another 30 minutes.

[0062] After the grouting is completed, the diver tightens the screw plugs of all grouting holes 40, backfills the epoxy putty on the surface and smoothes it.

[0063] (9) Edge banding

[0064] After all the above processes are completed, apply underwater sealant around the perimeter of the newly added structure to seal the edges, making the entire structure seamless and leak-proof. Apply the underwater sealant at least twice.

[0065] (10) Post-completion tracer inspection

[0066] After the repair of the joints of the water intake culvert is completed, the divers conduct underwater video inspection of the completed results to check the treatment effect of the joints and ensure that the treatment effect is good.

[0067] The above fix:

[0068] (1) Meet the project schedule requirements, ensure a long warranty period after repair, and ensure reliable reinforcement quality.

[0069] (2) The safety, stability and economy of the seawater circulating water system are significantly improved. It is safer and has a higher quality assurance than traditional construction technology. It also saves money compared to building a new water intake box culvert and has a very high cost performance.

[0070] (3) The erosion damage areas on both sides of the culvert repair joints are effectively repaired, solving the technical problems of poor leakage repair effect, easy damage and short durability in the existing technology. It can not only ensure the waterproof sealing effect, but also ensure the structural strength of the structural joints, and at the same time meet the expansion and contraction requirements of the structural joints.

[0071] (4) This repair structure forms a closed structure along the repair joint, which is self-contained and can resist the pressure difference between the inside and outside of the culvert, making it have strong resistance to high-speed water flow pulsation pressure damage and strong anti-scouring ability. After adding the grouting process, it has strong adaptability to deformation, ensuring better sealing of the repair.

[0072] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A device for repairing leakage of water intake culvert joints, characterized in that: include: an elastic member, the elastic member being disposed in the repair seam near the muddy side of the water intake culvert and abutting against the repair seam, and being used to close an end of the repair seam near the muddy side; A U-shaped stainless steel cover plate, fixedly connected to the inner wall of the water intake culvert, used to close the end of the repair seam away from the sediment side; comprising: The main body, the U-shaped stainless steel cover is fixedly connected to the inner wall of the water intake culvert through the main body; a bending portion formed by the main body protruding toward the interior of the repair seam; A flexible grouting layer is provided in the repair seam and is filled in a filling cavity surrounded by the U-shaped stainless steel cover plate, the inner wall of the repair seam and the elastic member.

2. The water intake culvert seam repair and leakage repair device according to claim 1, characterized in that: A plurality of grouting holes for injecting flexible grouting into the filling cavity are provided at the main body portion connected to the repaired seam.

3. The water intake culvert seam repair and leakage repair device according to claim 2, characterized in that: It also includes a plurality of plugs for sealing the grouting holes after the filling cavity is fully filled with the flexible grouting.

4. The water intake culvert seam repair and leakage repair device according to claim 2, characterized in that: An internal thread is provided in the grouting hole.

5. The water intake culvert seam repair and leakage repair device according to claim 1, characterized in that: The main body is fixedly connected to the inner wall of the water intake culvert through a plurality of fixing members, and each of the fixing members further includes a stainless steel expansion bolt and a nut.

6. The water intake culvert seam repair and leakage repair device according to claim 1, characterized in that: A rubber waterproof gasket is provided between the main body and the inner wall of the water intake culvert.

7. The water intake culvert seam repair and leakage repair device according to claim 5, characterized in that: A stainless steel strip is provided between the main body and the nut.

8. The water intake culvert seam repair and leakage repair device according to claim 5, characterized in that: The diameter d of the stainless steel expansion bolt is 16 mm, and the minimum anchoring depth is 80 mm.

9. The water intake culvert seam repair and leakage repair device according to claim 8, characterized in that: The distance between adjacent stainless steel expansion bolts is 50 cm.

10. The water intake culvert seam repair and leakage repair device according to claim 1, characterized in that: An adhesive layer is provided between the inner wall of the seam repairing portion and the elastic member, and between the main body and the inner wall of the water intake culvert.

Images