Method for repairing large-diameter double-wall corrugated pipe

Abstract

The invention discloses a large-diameter double-wall corrugated pipe repairing method, and relates to the technical field of engineering construction.The large-diameter double-wall corrugated pipe repairing device comprises a pipeline supporting device and a grouting device, the pipeline supporting device comprises a supporting plate and a supporting frame, and the grouting device comprises an anchor rod located in a grouting hole and a grouting pipe arranged in the anchor rod; the repairing method comprises the following steps that a pipeline supporting device is erected at the deformed and collapsed positions of a pipeline, and meanwhile, punching and water injection are conducted at the collapsed positions so that the collapsed positions can smoothly recover to the original outline of the pipeline; holes are distributed and punched according to the requirement of construction grouting; a grouting device is installed at the punching position, the anchor rod is installed in the grouting hole, and a grouting pipe is inserted into the anchor rod for grouting; after the slurry is solidified, the pipeline supporting device is dismantled; sealing the repaired position by adopting a self-adhesive waterproof coiled material; and labor force can be effectively reduced, the excavation amount is reduced, the construction period is shortened, normal traffic of ground traffic is guaranteed, and the construction safety risk is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a method for repairing a large-diameter double-wall corrugated pipe. Background Art

[0002] In the past 15 to 20 years, during the construction of underground drainage pipelines in cities and towns across the country, a large number of double-wall corrugated pipes made of HDPE have been selected as the main material for drainage pipelines. Due to excessive price competition in the market, the material has become particularly degraded, and insufficient market supervision has led to a large number of unqualified products being buried underground. With the increase of years, changes in the soil around the pipeline have led to changes in the stress environment of the pipeline, and structural and functional defects such as collapse, deformation, and rupture have occurred in a large area of ​​the pipeline. As a result, many safety incidents and environmental pollution incidents caused by underground pipeline diseases have occurred in various places in recent years, such as road collapse, urban waterlogging, and pollution incidents such as inland rivers, lakes, and soil. When repairing the pipeline, large-scale excavation and repair require temporary circuit breaker, which has a great impact on traffic. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a method for repairing a large-diameter double-wall corrugated pipe.

[0004] The large-diameter double-wall corrugated pipe repair method provided by the present invention adopts the following technical solutions:

[0005] A large-diameter double-wall corrugated pipe repair method includes a pipe support device and a grouting device, wherein the pipe support device includes a plurality of support plates and a support frame for abutting the support plates against the inner wall of the pipe, and the grouting device includes an anchor rod located in a grouting hole and a grouting pipe arranged in the anchor rod. The repair method adopts the following steps:

[0006] S1. Install pipeline support devices at the locations where the pipeline is deformed or collapsed, and drill holes and inject water at the collapsed locations so that the pipeline can be smoothly restored to its original contour;

[0007] S2. Arrange holes and drill holes according to the needs of grouting construction;

[0008] S3, installing a grouting device at the drilling position, installing the anchor rod in the grouting hole, and inserting the grouting pipe into the anchor rod for grouting;

[0009] S4. After the slurry solidifies, remove the pipeline support device;

[0010] S5. Use self-adhesive waterproof membrane to seal the repair location.

[0011] Furthermore, the support plate is arranged in an arc shape to fit the side wall of the pipeline.

[0012] Furthermore, the support frame includes a mounting shaft and support rods distributed on the mounting shaft, the support plate is fixed on the support rods, and the length of the support rods is adjustable to enable the support plate to contact the inner wall of the pipeline.

[0013] Furthermore, a buffer pad is provided on one side of the support plate that contacts the inner wall of the pipe.

[0014] Furthermore, a sleeve for installing a support rod is provided on the installation shaft, one end of the support rod is inserted into the sleeve and can slide in the sleeve to adjust the position of the support plate, and a locking piece for fixing the support rod is provided on the sleeve.

[0015] Furthermore, the grouting device also includes an anchor plate, and the anchor rod is fixed in the anchor hole through the anchor plate.

[0016] Furthermore, an anchor head is provided at one end of the anchor rod away from the anchor plate, and the anchor head can be pushed by the grouting pipe to rotate on the anchor rod.

[0017] Furthermore, two anchor heads are symmetrically arranged on the anchor rod, and both of the two anchor heads are hingedly mounted on the anchor rod. Abutment blocks are arranged on opposite sides of the two anchor heads, and when the grouting pipe is inserted into the anchor rod, it abuts against the abutment block to push the anchor head to rotate.

[0018] Furthermore, the inner wall of the anchor rod is provided with an internal thread, and the outer wall of the grouting pipe is provided with an external thread engaged with the internal thread of the anchor rod.

[0019] In summary, the present invention includes at least one of the following beneficial effects: using the supporting structure to restore its original contour, drilling holes to install special anchor bolts, grouting it, allowing sufficient grouting above and on both sides of the pipeline, so that an arch bridge effect is formed above the pipeline in the later stage, and the load is transferred to both sides. The pipeline is pulled to the original contour by special anchor bolts, and the repair position is sealed with a self-adhesive waterproof membrane to achieve the effect of restoring it to its original state, which can effectively reduce labor, reduce excavation volume, shorten construction period, ensure normal ground traffic, etc., and reduce construction safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 It is a schematic structural diagram of a grouting device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] The following is combined with Figure 1-2 The present invention is described in further detail.

[0024] The embodiment of the present invention discloses a method for repairing a large diameter double-wall corrugated pipe. Figure 1-2 The large diameter double wall corrugated pipe repair method includes a pipe support device and a grouting device, wherein the pipe support device includes a plurality of support plates 1 and a support frame 2 for abutting the support plates 1 against the inner wall of the pipe, and the grouting device includes an anchor rod 3 located in a grouting hole and a grouting pipe 4 arranged in the anchor rod 3. The repair method adopts the following steps:

[0025] S1. Install pipeline support devices at the locations where the pipeline is deformed or collapsed, and drill holes and inject water at the collapsed locations so that the pipeline can be smoothly restored to its original contour;

[0026] S2. Arrange holes and drill holes according to the needs of grouting construction;

[0027] S3, installing a grouting device at the drilling position, installing the anchor rod 3 in the grouting hole, and inserting the grouting pipe 4 into the anchor rod 3 for grouting;

[0028] S4. After the slurry solidifies, remove the pipeline support device;

[0029] S5. Use self-adhesive waterproof membrane to seal the repaired area;

[0030] Use the supporting structure to restore its original outline, drill holes to install special anchor bolts, and inject grout to fully inject grout on the top and both sides of the pipeline, so that an arch bridge effect will be formed above the pipeline in the later stage to transfer the load to both sides. The pipeline is pulled to its original outline by special anchor bolts, and the repaired position is sealed with self-adhesive waterproof membrane to restore it to its original state. It can effectively reduce labor, reduce excavation volume, shorten construction period, ensure normal ground traffic, etc., and reduce construction safety risks.

[0031] In this embodiment, the support plate 1 is arranged in an arc shape to fit the side wall of the pipeline, so that the support plate 1 can completely fit the inner wall of the pipeline, support the pipeline, restore the pipeline to its original contour, and achieve a better supporting effect.

[0032] In this embodiment, the support frame 2 includes a mounting shaft 21 and a support rod 22 distributed on the mounting shaft 21, and the support plate 1 is fixed on the support rod 22. The length of the support rod 22 is adjustable to enable the support plate 1 to contact the inner wall of the pipe. During installation, the length of the support rod 22 is adjusted according to the inner diameter of the pipe so that the support plate 1 can contact the inner wall of the pipe, restore the pipe to its original contour, and support the inner wall of the pipe. The support rod 22 can be adjusted to adapt to pipes of different inner diameters, and has higher versatility.

[0033] In this embodiment, a buffer pad is provided on one side of the support plate 1 that contacts the inner wall of the pipe. The buffer pad is a rubber pad that can provide buffering protection for the inner wall of the pipe to prevent the support plate 1 from causing damage to the inner wall of the pipe when supporting the inner wall of the pipe.

[0034] In this embodiment, a sleeve 23 for installing a support rod 22 is provided on the mounting shaft 21. One end of the support rod 22 is inserted into the sleeve 23 and can slide in the sleeve 23 to adjust the position of the support plate 1. A locking member 24 for fixing the support rod 22 is provided on the sleeve 23. The locking member 24 is a bolt. By sliding the support rod 22 in the sleeve 23, the position of the support plate 1 can be adjusted. After appropriate adjustment, the support rod 22 is fixed by the locking member 24.

[0035] In this embodiment, the grouting device further includes an anchor plate 5 , and the anchor rod 3 is fixed in the anchor hole through the anchor plate 5 .

[0036] In this embodiment, an anchor head 31 is provided at one end of the anchor rod 3 away from the anchor plate 5. The anchor head 31 can be pushed by the grouting pipe 4 to rotate on the anchor rod 3. When installing the grouting pipe 4, the grouting pipe 4 is inserted into the anchor rod 3. During the insertion process of the grouting pipe 4 into the anchor rod 3, the anchor head 31 will be in contact with the anchor head 31, so that the anchor head 31 rotates and opens to both sides on the anchor rod 3. During the grouting process, the concrete slurry wraps the anchor head 31, so that the anchor head 31 is buried in the poured concrete, which can increase the installation strength of the anchor rod 3 and increase the bonding force between the anchor rod 3 and the poured concrete.

[0037] In this embodiment, two anchor heads 31 are symmetrically arranged on the anchor rod 3, and the two anchor heads 31 are hingedly installed on the anchor rod 3. Abutment blocks 32 are arranged on the opposite sides of the two anchor heads 31. When the grouting pipe 4 is inserted into the anchor rod 3, it abuts against the abutment block 32 to push the anchor head 31 to rotate, so that the anchor head 31 can be in an open structure on the anchor rod 3, and the installation is more stable.

[0038] In this embodiment, the inner wall of the anchor rod 3 is provided with an internal thread, and the outer wall of the grouting pipe 4 is provided with an external thread that meshes with the internal thread of the anchor rod 3. After the grouting pipe 4 is inserted into the anchor rod 3 to a certain depth, the external thread of the outer wall of the grouting pipe 4 and the internal thread core of the anchor rod 3 are engaged. By rotating the grouting pipe 4, the grouting pipe 4 is completely installed in the anchor rod 3, and the grouting pipe 4 is also fixedly connected to the anchor rod 3 to avoid the movement of the grouting pipe 4 when pouring concrete, and there is no need to add other fixing structures to the grouting pipe 4.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for repairing a large diameter double-wall corrugated pipe, characterized in that: The invention comprises a pipeline support device and a grouting device, wherein the pipeline support device comprises a plurality of support plates (1) and a support frame (2) used for pressing the support plates (1) against the inner wall of the pipeline, and the grouting device comprises an anchor rod (3) located in a grouting hole and a grouting pipe (4) arranged in the anchor rod (3). The repair method adopts the following steps: S1. Install pipeline support devices at the locations where the pipeline is deformed or collapsed, and drill holes and inject water at the collapsed locations so that the pipeline can be smoothly restored to its original contour; S2. Arrange holes and drill holes according to the needs of grouting construction; S3, installing a grouting device at the drilling position, installing the anchor rod (3) in the grouting hole, and inserting the grouting pipe (4) into the anchor rod (3) for grouting; S4. After the slurry solidifies, remove the pipeline support device; S5. Use self-adhesive waterproof membrane to seal the repair location.

2. The method for repairing a large diameter double-wall corrugated pipe according to claim 1, characterized in that: The support plate (1) is arranged in an arc shape and fits closely to the side wall of the pipeline.

3. The method for repairing a large diameter double-wall corrugated pipe according to claim 2, characterized in that: The support frame (2) comprises a mounting shaft (21) and support rods (22) distributed on the mounting shaft (21); the support plate (1) is fixed on the support rods (22); the length of the support rods (22) is adjustable so as to enable the support plate (1) to contact the inner wall of the pipeline.

4. The method for repairing a large diameter double-wall corrugated pipe according to claim 3, characterized in that: A buffer pad is provided on one side of the support plate (1) that contacts the inner wall of the pipeline.

5. The method for repairing a large diameter double-wall corrugated pipe according to claim 3, characterized in that: The mounting shaft (21) is provided with a sleeve (23) for mounting a support rod (22); one end of the support rod (22) is inserted into the sleeve (23) and can slide in the sleeve (23) for adjusting the position of the support plate (1); and the sleeve (23) is provided with a locking member (24) for fixing the support rod (22).

6. The method for repairing a large diameter double-wall corrugated pipe according to claim 1, characterized in that: The grouting device also includes an anchor plate (5), and the anchor rod (3) is fixed in the anchor hole via the anchor plate (5).

7. The method for repairing a large diameter double-wall corrugated pipe according to claim 6, characterized in that: An anchor head (31) is provided at one end of the anchor rod (3) away from the anchor plate (5), and the anchor head (31) can be pushed by the grouting pipe (4) to rotate on the anchor rod (3).

8. The method for repairing a large diameter double-wall corrugated pipe according to claim 7, characterized in that: Two anchor heads (31) are symmetrically arranged on the anchor rod (3). The two anchor heads (31) are hingedly mounted on the anchor rod (3). Abutment blocks (32) are arranged on opposite sides of the two anchor heads (31). When the grouting pipe (4) is inserted into the anchor rod (3), it abuts against the abutment blocks (32) to push the anchor heads (31) to rotate.

9. The method for repairing a large diameter double-wall corrugated pipe according to claim 8, characterized in that: The inner wall of the anchor rod (3) is provided with an internal thread, and the outer wall of the grouting pipe (4) is provided with an external thread meshing with the internal thread of the anchor rod (3).

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