Underground pipeline repairing method and repairing structure

Abstract

The invention discloses a repairing method and a repairing structure of an underground pipeline, and relates to the technical field of pipeline repairing, and the repairing method of the underground pipeline comprises the following steps: positioning a damaged part of the pipeline; the pipeline is blocked, and the interior of the pipeline is cleaned; injecting a plugging agent to the damaged part; injecting concrete grout into the stratum where the damaged part is located so as to form a water stop structure wrapping the periphery of the pipeline; providing a repairing structure; the periphery of the water stop sleeve is coated with resin glue; the clamping assembly and the water stop sleeve are arranged at the damaged position in the pipeline; the clamping assembly is opened, so that the clamping assembly is clamped in the pipeline, and the water stop sleeve is clamped between the pipeline and the clamping assembly; and the positions, attached to the pipeline, of the two ends of the water stop sleeve are coated with waterproof paint. By means of the pipeline repairing device, the pipeline repairing efficiency can be improved, and the labor intensity of workers can be greatly relieved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline repair, and in particular to a repair method and a repair structure for an underground pipeline. Background Art

[0002] Underground pipelines are important infrastructure for urban water pollution prevention and control, urban drainage and flood control. Underground pipelines usually have a long service life. After a certain number of years of use, underground pipelines often break. At present, the repair of damaged underground pipelines is usually to dig out the damaged underground pipelines and then rebury new pipelines to replace the damaged underground pipelines. This method of repairing damaged pipelines has low repair efficiency and high labor intensity. Summary of the invention

[0003] The main purpose of the present invention is to provide a repair method and repair structure for underground pipelines,

[0004] To achieve the above-mentioned purpose, the present invention provides a method for repairing an underground pipeline, the method comprising:

[0005] Locate the damage in the pipe;

[0006] Blocking the pipeline and cleaning the inside of the pipeline;

[0007] injecting a plugging agent into the damaged area;

[0008] Injecting concrete slurry into the stratum where the damaged part is located to form a water-stopping structure wrapped around the outer periphery of the pipeline;

[0009] A repair structure is provided; wherein the repair structure comprises a clamping assembly and a water stop sleeve sleeved on the outer periphery of the clamping assembly;

[0010] Applying resin glue on the outer periphery of the water stop sleeve;

[0011] The clamping assembly and the water-stop sleeve are arranged at the damaged part in the pipeline;

[0012] Open the clamping assembly to clamp the clamping assembly into the pipe, thereby clamping the water stop sleeve between the pipe and the clamping assembly;

[0013] Waterproof coating is applied to the positions where both ends of the water stop sleeve are attached to the pipeline to form a waterproof layer, thereby completing the repair of the pipeline.

[0014] In one embodiment, the snap-on assembly includes a snap-on ring;

[0015] The step of arranging the clamping assembly and the water-stop sleeve at the damaged part in the pipeline comprises:

[0016] The clamping ring and the water-stop sleeve are arranged at the damaged part in the pipe;

[0017] The step of opening the clamping assembly to clamp the clamping assembly into the pipe, thereby clamping the water stop sleeve between the pipe and the clamping assembly comprises:

[0018] The clamping ring is opened to clamp the clamping ring in the pipe, thereby clamping the water stop sleeve between the pipe and the clamping ring.

[0019] In one embodiment, the snap ring includes a plurality of snap rings;

[0020] The step of arranging the clamping ring and the water-stop sleeve at the damaged part in the pipeline comprises:

[0021] The water stop sleeve is arranged at the damaged part in the pipe, and a plurality of the clamping rings are arranged at intervals at the damaged part of the pipe along the extending direction of the pipe;

[0022] The step of opening the clamping ring to clamp the clamping ring into the pipe, thereby clamping the water stop sleeve between the pipe and the clamping ring comprises:

[0023] The plurality of clamping rings are opened to clamp the plurality of clamping rings in the pipe, thereby clamping the water stop sleeve between the pipe and the plurality of clamping rings.

[0024] In one embodiment, the snap ring is a stainless steel snap ring.

[0025] In one embodiment, the water-stop sleeve is a rubber water-stop sleeve.

[0026] In one embodiment, a serrated surface is formed on the outer periphery of the water stop sleeve;

[0027] The step of coating the resin glue on the outer periphery of the water stop sleeve comprises:

[0028] The resin glue is coated on the sawtooth surface.

[0029] In one embodiment, the step of injecting concrete slurry into the stratum where the damaged part is located to form a water-stopping structure wrapped around the outer periphery of the pipe includes:

[0030] A grouting hole is excavated downwards in the stratum next to the damaged part, and a grouting pipe is inserted into the grouting hole;

[0031] Concrete slurry is injected into the grouting hole through the grouting pipe, so as to inject concrete slurry into the stratum where the damaged part is located.

[0032] In one embodiment, the step of digging a grouting hole downward in the stratum next to the damaged part and inserting a grouting pipe into the grouting hole comprises:

[0033] A plurality of grouting holes are excavated downward around the damaged part in the stratum next to the damaged part, and a grouting pipe is inserted into each grouting hole accordingly;

[0034] The step of injecting concrete slurry into the grouting hole through the grouting pipe to inject concrete slurry into the stratum where the damaged part is located comprises:

[0035] Concrete slurry is injected into the corresponding grouting hole through the grouting pipe, so as to inject concrete slurry into the stratum where the damaged part is located.

[0036] In one embodiment, the grouting pipe is provided with a plurality of grouting sections spaced apart along the axial direction thereof, and each of the grouting sections is provided with a plurality of grouting ports spaced apart around the axial direction of the grouting pipe.

[0037] The present invention also provides a repair structure, which is applied to the above-mentioned underground pipeline repair method.

[0038] The technical solution of the present invention locates the damaged part of the pipeline first, blocks the pipeline, and cleans the blocked pipeline. The damaged part of the pipeline after cleaning is clearer, and the pipeline can be repaired better. A plugging agent is injected into the damaged part of the pipeline, and the plugging agent can make preliminary repairs to the damaged part of the underground pipeline. Then, concrete slurry is injected into the stratum where the damaged part is located, which can block the pores in the stratum around the damaged part of the pipeline, and a concrete water-stopping structure can be formed around the damaged part of the pipeline, which can further block the damaged part of the pipeline. Resin glue is coated on the outer periphery of the water-stop sleeve, and then the clamping assembly and the water-stop sleeve are arranged at the damaged part in the pipeline. The clamping assembly in the water-stop sleeve is opened, and the clamping assembly can stretch the water-stop sleeve so that the water-stop sleeve can fit the inner wall of the pipeline, thereby repairing the damaged part of the pipeline, and the resin glue coated on the outside of the water-stop sleeve can fit the water-stop sleeve to the damaged part of the pipeline. After the resin glue solidifies, the damaged part of the pipeline can be further repaired, and the repair effect is better. Finally, waterproof coating is applied to both ends of the water stop sleeve, and the gap between the two ends of the water stop sleeve and the pipeline can be further blocked, so as to better block the damaged part of the pipeline and achieve better repair effect. The repair method of underground pipeline provided by the present invention can improve the repair efficiency of the pipeline and greatly reduce the labor intensity of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0040] Figure 1 A schematic diagram of a process flow of an embodiment of a method for repairing an underground pipeline provided by the present invention;

[0041] Figure 2 This is a cross-sectional schematic diagram of a pipeline and a repair structure in an embodiment of a method for repairing an underground pipeline provided by the present invention.

[0042] Description of Figure Numbers:

[0043] 10. stratum; 20. pipeline; 21. damaged part; 30. repair structure; 31. snap-on assembly; 311. snap-on ring; 312. water stop sleeve; 3121. serrated surface; 40. waterproof layer.

[0044] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] The invention provides a repair method and a repair structure for an underground pipeline.

[0049] See also Figure 1 to Figure 2 In one embodiment of the present invention, the underground pipeline repair method includes:

[0050] Step S100, locating the damaged part of the pipeline;

[0051] Step S200, blocking the pipeline and cleaning the inside of the pipeline;

[0052] Step S300, injecting a plugging agent into the damaged part;

[0053] Step S400, injecting concrete slurry into the stratum where the damaged part is located to form a water-stopping structure wrapped around the outer periphery of the pipeline;

[0054] Step S500, providing a repair structure; wherein the repair structure 30 includes a clamping assembly 31 and a water stop sleeve 312 sleeved on the outer periphery of the clamping assembly 31;

[0055] Step S600, coating the outer periphery of the water stop sleeve with resin glue;

[0056] Step S700, arranging the clamping assembly and the water-stop sleeve at the damaged part in the pipe;

[0057] Step S800, opening the clamping assembly to clamp the clamping assembly into the pipe, thereby clamping the water stop sleeve between the pipe and the clamping assembly;

[0058] Step S900, applying waterproof coating to the positions where both ends of the water stop sleeve are attached to the pipeline to form a waterproof layer, thereby completing the repair of the pipeline.

[0059] The technical solution of the present invention locates the damaged part 21 of the pipeline 20 first, blocks the pipeline 20, and cleans the blocked pipeline 20. The damaged part 21 of the pipeline 20 after cleaning is clearer, and the pipeline 20 can be repaired better. A plugging agent is injected into the damaged part 21 of the pipeline 20, and the plugging agent can perform preliminary repairs on the damaged part 21 of the underground pipeline 20. Then, concrete slurry is injected into the stratum 10 where the damaged part 21 is located, which can block the pores in the stratum 10 around the damaged part 21 of the pipeline 20, and a concrete water-stopping structure can be formed around the damaged part 21 of the pipeline 20, which can further block the damaged part 21 of the pipeline 20. Resin glue is coated on the outer periphery of the water stop sleeve 312, and then the clamping assembly 31 and the water stop sleeve 312 are arranged at the damaged part 21 in the pipe 20, and the clamping assembly 31 in the water stop sleeve 312 is opened, and the clamping assembly 31 can stretch the water stop sleeve 312 so that the water stop sleeve 312 can fit the inner wall of the pipe 20, thereby repairing the damaged part 21 of the pipe 20, and the resin glue coated on the outside of the water stop sleeve 312 can fit the water stop sleeve 312 to the damaged part 21 of the pipe 20, and the resin glue can further repair the damaged part 21 of the pipe 20 after solidification, and the repair effect is better. Finally, waterproof coating is coated on both ends of the water stop sleeve 312, and the gap between the two ends of the water stop sleeve 312 and the pipe 20 can be further blocked, so as to better block the damaged part 21 of the pipe 20, and the repair effect is better. The repair method of the underground pipe 20 provided by the present invention can improve the repair efficiency of the pipe 20, and can greatly reduce the labor intensity of personnel.

[0060] In one embodiment, the snap-on assembly 31 includes a snap-on ring 311;

[0061] Step S700 includes:

[0062] Step S710, arranging the clamping ring and the water-stop sleeve at the damaged part in the pipe;

[0063] Step S800 includes:

[0064] Step S810, opening the clamping ring to clamp the clamping ring into the pipe, thereby clamping the water stop sleeve between the pipe and the clamping ring.

[0065] Specifically, the clamping ring is lifted by extending the hydraulic jack into the pipe to open the clamping ring so that it can be clamped in the pipe. The water stop sleeve can then be clamped between the pipe and the clamping ring through the clamping ring, so that the water stop sleeve can fit firmly on the damaged part of the pipe. The clamping ring can be lifted only by extending the jack. No personnel need to enter the operation, which is simple, convenient and safer.

[0066] In one embodiment, the snap ring comprises a plurality of said snap rings;

[0067] Step S710 includes:

[0068] Step S711, disposing the water stop sleeve at the damaged part in the pipe, and disposing a plurality of the clamping rings at intervals at the damaged part of the pipe along the extending direction of the pipe;

[0069] Step S810 includes:

[0070] Step S811, opening the plurality of the clamping rings to clamp the plurality of the clamping rings into the pipe, thereby clamping the water stop sleeve between the pipe and the plurality of the clamping rings.

[0071] Furthermore, a plurality of snap rings 311 are arranged at intervals along the extension direction of the pipeline 20 in the pipeline 20 . The plurality of snap rings 311 can make the water stop sleeve 312 fit the pipeline 20 more closely, thereby further improving the repair effect on the pipeline 20 .

[0072] In one embodiment, the clamping ring 311 is a stainless steel clamping ring 311. The stainless steel clamping ring 311 has strong corrosion resistance, is more suitable for a corrosive working environment such as an underground pipeline 20, and has better durability.

[0073] In one embodiment, the water-stop sleeve 312 is a rubber water-stop sleeve 312 . The rubber water-stop sleeve 312 has a good water-stopping effect and good deformation performance, and can better match the shape of the pipe 20 .

[0074] In one embodiment, a serrated surface 3121 is formed on the outer periphery of the water stop sleeve 312;

[0075] Step S600 includes:

[0076] Step S610, coating the resin glue on the serrated surface.

[0077] Specifically, a serrated surface 3121 is formed on the outer periphery of the water stop sleeve 312 , and resin glue is coated on the serrated surface 3121 . The serrated surface 3121 and the resin glue can make the water stop sleeve 312 fit more closely inside the pipe 20 , thereby improving the repair effect of the damaged part 21 of the pipe 20 .

[0078] In one embodiment, step S400 includes:

[0079] Step S410, digging a grouting hole downward in the stratum next to the damaged part, and inserting a grouting pipe into the grouting hole;

[0080] Step S420, injecting concrete slurry into the grouting hole through the grouting pipe, so as to inject concrete slurry into the stratum where the damaged part is located.

[0081] Specifically, by digging a grouting hole downward in the stratum 10 beside the damaged part 21 and then injecting concrete slurry into the grouting hole through a grouting pipe, the stratum 10 where the damaged part 21 is located can be injected with concrete slurry, which is simple and convenient.

[0082] In one embodiment, step S410 includes:

[0083] Step S411, excavating a plurality of grouting holes downward around the damaged part in the stratum next to the damaged part, and inserting a grouting pipe into each grouting hole accordingly;

[0084] Step S420 includes:

[0085] Step S421, injecting concrete slurry into the corresponding grouting hole through the grouting pipe, so as to inject concrete slurry into the stratum where the damaged part is located.

[0086] Specifically, by injecting concrete slurry into the stratum 10 next to the damaged part 21 through a plurality of grouting pipes, the formed water-stopping structure can more completely wrap the damaged part 21 of the pipeline 20, thereby achieving a better sealing effect.

[0087] In one embodiment, a plurality of grouting sections are spaced apart and distributed along the axial direction of the grouting pipe, and a plurality of grouting ports are spaced apart around the axial direction of the grouting pipe on each grouting section.

[0088] Specifically, by injecting concrete into the grouting holes through the multiple grouting ports in the multiple grouting sections on the main pipe, the pores in the stratum 10 around the damaged part 21 of the pipe 20 can be more completely blocked.

[0089] Specifically, by injecting concrete into the grouting holes through the multiple grouting ports in the multiple grouting sections on the main pipe, the pores in the stratum 10 around the damaged part 21 of the pipe 20 can be more completely blocked.

[0090] The present invention also proposes a repair structure, which is applied to the repair method of the above-mentioned underground pipeline 20. The specific structure of the repair structure refers to the above-mentioned embodiment. Since the repair structure adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0091] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A method for repairing an underground pipeline, characterized in that: The repair method comprises: Locate the damage in the pipe; Blocking the pipeline and cleaning the inside of the pipeline; injecting a plugging agent into the damaged area; Injecting concrete slurry into the stratum where the damaged part is located to form a water-stopping structure wrapped around the outer periphery of the pipeline; A repair structure is provided; wherein the repair structure comprises a clamping assembly and a water stop sleeve sleeved on the outer periphery of the clamping assembly; Applying resin glue on the outer periphery of the water stop sleeve; The clamping assembly and the water-stop sleeve are arranged at the damaged part in the pipeline; Open the clamping assembly to clamp the clamping assembly into the pipe, thereby clamping the water stop sleeve between the pipe and the clamping assembly; Waterproof coating is applied to the positions where both ends of the water stop sleeve are attached to the pipeline to form a waterproof layer, thereby completing the repair of the pipeline.

2. The method for repairing an underground pipeline according to claim 1, characterized in that: The clamping assembly comprises a clamping ring; The step of arranging the clamping assembly and the water-stop sleeve at the damaged part in the pipeline comprises: The clamping ring and the water-stop sleeve are arranged at the damaged part in the pipe; The step of opening the clamping assembly to clamp the clamping assembly into the pipe, thereby clamping the water stop sleeve between the pipe and the clamping assembly comprises: The clamping ring is opened to clamp the clamping ring in the pipe, thereby clamping the water stop sleeve between the pipe and the clamping ring.

3. The method for repairing an underground pipeline as claimed in claim 2, characterized in that: The snap ring includes a plurality of snap rings; The step of arranging the clamping ring and the water-stop sleeve at the damaged part in the pipeline comprises: The water stop sleeve is arranged at the damaged part in the pipe, and a plurality of the clamping rings are arranged at intervals at the damaged part of the pipe along the extending direction of the pipe; The step of opening the clamping ring to clamp the clamping ring into the pipe, thereby clamping the water stop sleeve between the pipe and the clamping ring comprises: The plurality of clamping rings are opened to clamp the plurality of clamping rings in the pipe, thereby clamping the water stop sleeve between the pipe and the plurality of clamping rings.

4. The method for repairing an underground pipeline as claimed in claim 2, characterized in that: The clamping ring is a stainless steel clamping ring.

5. The method for repairing an underground pipeline as claimed in claim 2, characterized in that: The water-stop sleeve is a rubber water-stop sleeve.

6. The method for repairing an underground pipeline according to claim 2, characterized in that: The outer periphery of the water stop sleeve is formed with a serrated surface; The step of coating the resin glue on the outer periphery of the water stop sleeve comprises: The resin glue is coated on the sawtooth surface.

7. The method for repairing an underground pipeline according to any one of claims 1 to 6, characterized in that: The step of injecting concrete slurry into the stratum where the damaged part is located to form a water-stopping structure wrapped around the outer periphery of the pipeline comprises: A grouting hole is excavated downwards in the stratum next to the damaged part, and a grouting pipe is inserted into the grouting hole; Concrete slurry is injected into the grouting hole through the grouting pipe, so as to inject concrete slurry into the stratum where the damaged part is located.

8. The method for repairing an underground pipeline as claimed in claim 7, characterized in that: The steps of digging a grouting hole downward in the stratum next to the damaged part and inserting a grouting pipe into the grouting hole include: A plurality of grouting holes are excavated downward around the damaged part in the stratum next to the damaged part, and a grouting pipe is inserted into each grouting hole accordingly; The step of injecting concrete slurry into the grouting hole through the grouting pipe to inject concrete slurry into the stratum where the damaged part is located comprises: Concrete slurry is injected into the corresponding grouting hole through the grouting pipe, so as to inject concrete slurry into the stratum where the damaged part is located.

9. The method for repairing an underground pipeline as claimed in claim 8, characterized in that: The grouting pipe is provided with a plurality of grouting sections spaced apart along its axial direction, and each of the grouting sections is provided with a plurality of grouting openings spaced apart around the axial direction of the grouting pipe.

10. A repair structure, characterized in that: The repair structure is applied to the repair method of the underground pipeline according to any one of claims 1 to 9.

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