阅读说明：本技术 一种排水管道开裂局部封堵结构和封堵方法以及修复方法 (Drainage pipeline cracking local plugging structure, plugging method and repairing method ) 是由 王复明 方宏远 赵鹏 潘艳辉 李斌 何航 于 2019-09-25 设计创作，主要内容包括：本发明涉及一种排水管道开裂局部封堵结构和封堵方法以及修复方法。一种排水管道开裂局部封堵结构,包括：第一修补材料、第二修补材料、封面层、加固体和填缝体；所述填缝体用于填充并堵住管道上的裂缝；所述加固体用于对管道外的土体进行加固；所述第一修补材料用于密封所述裂缝；所述第二修补材料用于粘贴在所述第一修补材料表面；所述封面层用于密封所述第二修补材料的表面；所述第一修补材料和所述第二修补材料的接缝错开距离大于或等于第三预定距离。本发明提供的一种大直径混凝土排水管道开裂局部修复方法,对管道裂缝处外围土体进行加固以稳定土体,再将裂缝进行密封修补,形成牢固的管道裂缝内衬修复结构,能够快速修复裂缝,施工速度快。(The invention relates to a local blocking structure for a cracked drainage pipeline, a blocking method and a repairing method. A partial blocking structure for a drainage pipeline crack comprises: the first repairing material, the second repairing material, the sealing surface layer, the reinforcing body and the joint filling body; the joint filling body is used for filling and blocking cracks on the pipeline; the reinforcing body is used for reinforcing soil outside the pipeline; the first repair material is used for sealing the crack; the second repairing material is used for being stuck on the surface of the first repairing material; the sealing surface layer is used for sealing the surface of the second repairing material; the staggered distance of the joints of the first patching material and the second patching material is greater than or equal to a third preset distance. According to the method for locally repairing the large-diameter concrete drainage pipeline crack, provided by the invention, the peripheral soil body at the pipeline crack is reinforced to stabilize the soil body, and then the crack is sealed and repaired to form a firm pipeline crack lining repairing structure, so that the crack can be quickly repaired, and the construction speed is high.)

1. A partial blocking structure for drainage pipeline cracking is characterized by comprising: the first repairing material, the second repairing material, the sealing surface layer, the reinforcing body and the joint filling body;

the joint filling body is used for filling and blocking cracks on the pipeline;

the reinforcing body is used for reinforcing soil outside the pipeline;

the first repair material is used for sealing the crack;

the second repairing material is used for being stuck on the surface of the first repairing material;

the sealing surface layer is used for sealing the surface of the second repairing material;

the staggered distance of the joints of the first patching material and the second patching material is greater than or equal to a third preset distance.

2. The partial plugging structure for the cracking of the drainage pipeline according to claim 1, wherein the crack filling body is formed after the solidification of the first slurry; the reinforcing body is formed after the second slurry is solidified; the front cover layer is formed by air-drying a front cover material.

3. The partial plugging structure for drainpipe cracking of claim 2, wherein said first slurry is a quick setting polymer repair material;

the second slurry is a high polymer repair material;

the first repairing material and the second repairing material are CFRP fiber cloth soaked with impregnating glue;

the cover material is epoxy resin.

4. A method of plugging a plugging structure according to any one of claims 1 to 3, comprising the steps of:

t1, performing first grouting outside the pipeline through a grouting pipe, and injecting the first grout to seal the crack;

t2, performing second grouting outside the pipeline through a grouting pipe, and injecting the second grout to reinforce the soil outside the pipeline;

t3, after the crack is sealed and the slurry of the second grouting is permeated and solidified, polishing the inner wall of the pipeline at the crack position, and uniformly coating the mixed primer on the surface of the inner wall of the pipeline at the crack position;

t4, after the primer is dried, adhering a first repairing material on the surface of the primer;

t5, after the first mending material is solidified, adhering a second mending material on the surface of the first mending material;

t6, after the second repairing material is solidified, constructing the surface covering layer on the surface of the second repairing material.

5. The plugging method of claim 4, wherein the first grouting tool is a portable grouting device.

6. The plugging method of claim 4, wherein the second grouting tool is a polymer grouting device.

7. A method for repairing the local crack of drainage pipeline, which is characterized by using the plugging method of claim 4 and further comprising the step of

S1, inspecting the pipeline and finding out the position of the pipeline crack;

s2, plugging upstream incoming water, and cleaning the inner wall of the pipeline at the crack position;

s3, arranging a plurality of grouting holes on two sides of the crack position, wherein the grouting holes penetrate through the pipe wall of the pipeline, inserting grouting pipes into the grouting holes, and executing the plugging method.

8. The method for locally repairing the crack of the large-diameter concrete drainage pipeline according to claim 7, wherein in the step S1, the inspection pipeline is specifically:

and the inspection well places a pontoon carrying the camera system into the pipeline, and the camera system is used for shooting the upper pipe wall of the water surface of the pipeline.

9. The method for locally repairing the crack of the large-diameter concrete drainage pipeline according to claim 7, wherein in the step S2, the tool for blocking the upstream water is a water stop air bag, and an external pipe compressor is used for inflating the water stop air bag; the tool used for cleaning is a high-pressure water flow device.

10. The method for locally repairing the large-diameter concrete drainage pipeline crack of claim 7, wherein in the step S3, drilling holes are drilled at points at a first predetermined distance on two sides of the crack, and the hole distance between adjacent grouting holes is a second predetermined distance.

Technical Field

The invention relates to the field of repairing of concrete drainage pipeline cracks, in particular to a local sealing structure, a sealing method and a repairing method for a drainage pipeline crack.

Background

The urban underground pipe network is an important infrastructure of a city and is an underground lifeline for ensuring the normal operation of the whole urban function. Along with the continuous acceleration of the urbanization process in China, the quantity of the engineering for expanding and reconstructing urban underground pipelines is continuously increased. The total length of various pipelines in our country is very big now, however, because the construction process of earlier stage, the pipeline material is relatively poor and the long-time operation of maintenance scheduling problem not in place, under the effect of complicated environment load factor, concrete drainage pipe often appears the crack of fracture seepage disease, local diseases such as damage often take place, if can not in time restore, will cause urban road to collapse, accidents such as environmental pollution and the leakage of intraductal sewage can lead to the fact the influence to surrounding soil environment, if not in time restore, influence resident's trip safety and living environment will lead to the fact the harm of certain degree to road surface traffic and city economy, consequently, to the crack damage disease of underground drainage pipe network, in time effectual measure should be taken, in order to avoid bigger loss.

The existing repair scheme aiming at underground drainage pipe network cracks mainly comprises two main types: the first type is excavation and replacement of a new pipe for repair, the repair mode can radically treat diseases, but the construction speed is low, the influence on traffic environment is large, the cost is high, a large amount of construction waste is generated, the environment is polluted, the operation of a pipe network is stopped, the consumption of financial resources and material resources is large, and the life of urban residents is influenced; (ii) a The second type is non-excavation repair, which generally comprises a pipeline interpolation method, a new cement mortar lining method, a new epoxy resin lining method, a sliding lining hose method, an interpolation smaller-caliber pipeline method, a lining steel plate reinforcing method and a CIPP (clean in place) in-situ curing method.

Patent document No. 201810540436.8 discloses a high polymer grouting construction process, but only discloses a general application method of grouting, and the sealing repair of pipeline cracks cannot be realized, so a novel trenchless drainage pipeline crack repair technology needs to be researched.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a local sealing structure, a sealing method and a repairing method for a cracked drainage pipeline, which can seal and repair the pipeline crack and repair the crack of the drainage pipeline by using a non-excavation and sealing means.

In order to achieve the purpose, the invention adopts the following technical scheme:

a partial blocking structure for a drainage pipeline crack comprises: the first repairing material, the second repairing material, the sealing surface layer, the reinforcing body and the joint filling body;

the joint filling body is used for filling and blocking cracks on the pipeline;

the reinforcing body is used for reinforcing soil outside the pipeline;

the first repair material is used for sealing the crack;

the second repairing material is used for being stuck on the surface of the first repairing material;

the sealing surface layer is used for sealing the surface of the second repairing material;

the staggered distance of the joints of the first patching material and the second patching material is greater than or equal to a third preset distance.

Preferably, the drainage pipeline cracking local plugging structure is formed after the first slurry is solidified; the reinforcing body is formed after the second slurry is solidified; the front cover layer is formed by air-drying a front cover material.

Preferably, the drainage pipeline cracks the local plugging structure, and the first slurry is a quick-setting polymer repair material;

the second slurry is a high polymer repair material;

the first repairing material and the second repairing material are CFRP fiber cloth soaked with impregnating glue;

the cover material is epoxy resin.

A method of plugging a suitable for use in the plugging structure, comprising the steps of:

t1, performing first grouting outside the pipeline through a grouting pipe, and injecting the first grout to seal the crack;

t2, performing second grouting outside the pipeline through a grouting pipe, and injecting the second grout to reinforce the soil outside the pipeline;

t3, after the crack is sealed and the slurry of the second grouting is permeated and solidified, polishing the inner wall of the pipeline at the crack position, and uniformly coating the mixed primer on the surface of the inner wall of the pipeline at the crack position;

t4, after the primer is dried, adhering a first repairing material on the surface of the primer;

t5, after the first mending material is solidified, adhering a second mending material on the surface of the first mending material;

t6, after the second repairing material is solidified, constructing the surface covering layer on the surface of the second repairing material.

Preferably, in the plugging method, the first grouting tool is a portable grouting device.

Preferably, in the plugging method, the tool for the second grouting is high polymer grouting equipment.

The method for repairing the local crack of the drainage pipeline by using the plugging method also comprises the following steps

S1, inspecting the pipeline and finding out the position of the pipeline crack;

s2, plugging upstream incoming water, and cleaning the inner wall of the pipeline at the crack position;

s3, arranging a plurality of grouting holes on two sides of the crack position, wherein the grouting holes penetrate through the pipe wall of the pipeline, inserting grouting pipes into the grouting holes, and executing the plugging method.

Preferably, in the local repairing method for large-diameter concrete drainage pipeline cracking, in step S1, the inspection pipeline specifically includes:

and the inspection well places a pontoon carrying the camera system into the pipeline, and the camera system is used for shooting the upper pipe wall of the water surface of the pipeline.

In the preferred method for locally repairing the large-diameter concrete drainage pipeline crack, in step S2, the tool for blocking the upstream water is a water stop air bag, and an external pipe compressor is used to inflate the water stop air bag; the tool used for cleaning is a high-pressure water flow device.

Preferably, in the local repairing method for the large-diameter concrete drainage pipeline crack, in step S3, drilling holes at a first predetermined distance on two sides of the crack, where the hole distance between adjacent grouting holes is a second predetermined distance.

Compared with the prior art, the local blocking structure, the blocking method and the repairing method for the cracking of the drainage pipeline provided by the invention have the advantages that the blocking structure reinforces the peripheral soil body at the pipeline crack to stabilize the soil body, and then seals and repairs the crack to form a firm pipeline crack lining repairing structure, the crack can be quickly repaired, the construction speed is high, and the influence on the environment is small.

Drawings

FIG. 1 is a flow chart of the method for repairing cracked local large-diameter concrete drainage pipeline provided by the invention;

FIG. 2 is a schematic perspective view of a cracked pipe provided by the present invention;

FIG. 3 is a schematic view of a pipe with a crack according to the present invention, taken along a longitudinal section of the crack;

FIG. 4 is a schematic view of a longitudinal section of a detected crack of a floating vessel according to the present invention;

FIG. 5 is a schematic perspective view of a pipe provided by the present invention with grout holes drilled;

FIG. 6 is a schematic longitudinal section of a pipe provided by the present invention with grout holes drilled;

FIG. 7 is a schematic longitudinal cross-sectional view of a pipe to which a first repair material and a second repair material are applied according to the present invention;

FIG. 8 is a schematic longitudinal structural view of a pipe to which a first repair material and a second repair material are applied according to the present invention;

fig. 9 is a schematic view of the transverse structure of the pipeline to which the first repairing material and the second repairing material are adhered according to the present invention.

CFRP (Carbon Fiber Reinforced Polymer/Plastic, Carbon Fiber Reinforced composite)

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.