CN110925517A - Non-excavation large-caliber water supply pressure pipeline repairing construction method - Google Patents
Non-excavation large-caliber water supply pressure pipeline repairing construction method Download PDFInfo
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- CN110925517A CN110925517A CN201911297613.5A CN201911297613A CN110925517A CN 110925517 A CN110925517 A CN 110925517A CN 201911297613 A CN201911297613 A CN 201911297613A CN 110925517 A CN110925517 A CN 110925517A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1657—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section lengths of rigid pipe being inserted
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a repair construction method for a trenchless large-caliber water supply pressure pipeline, which comprises the following steps: cutting off two sides of the damaged pipeline; respectively excavating a working pit and a receiving pit at the head end and the tail end of the damaged pipeline; arranging a pipe jacking device in the working pit, pushing the lining pipe into the damaged pipeline by adopting the pipe jacking device, wherein the lining pipe is a combination of a glass fiber reinforced plastic sand inclusion pipe and a steel pipe, and sealing joints are arranged among the lining pipes in each section, wherein the lining pipes at the head end and the tail end of the damaged pipeline and the pipeline sections connected with branches are steel pipes; and after the pushing of the lining pipe is finished, the gap between the lining pipe and the damaged pipeline is blocked. The construction method is relatively simple, the process is mature, economic and practical, and the repaired pipeline has the advantages of small resistance to liquid delivery, good corrosion resistance, long service life and no water pollution.
Description
Technical Field
The invention relates to a water supply pressure pipeline non-excavation repairing method, in particular to a non-excavation large-caliber water supply pressure pipeline repairing construction method.
Background
Underground pipelines have cracks, damages, pipe joint dislocation, corrosion in the pipes and the like due to the influence of vibration of ground vehicles, bad pipeline foundation, corrosion and the like, so that timely repair is needed.
The common construction method for repairing the slotted pipeline needs to open intestines and break belly on the road, so that the construction method has long construction period and high construction cost, has great influence on traffic, generates a large amount of wastes and harms living environment, and the repair construction of the large-caliber water supply pressure pipeline has particularly serious influence on the road, the traffic and the environment.
The trenchless pipeline repairing method is an advanced method, and has relatively small influence on roads, traffic and environment. However, the existing trenchless pipeline repairing method has some defects, such as the pipeline trenchless reverse rotation lining repairing technology with the patent number ZL200410054201.6, which has obvious defects: the large-caliber hose filled with the thermosetting material is easy to harden in the construction process, so that the construction quality is often influenced; a large amount of hot water is needed in construction, so the loss amount of the hot water is large; the process is complex and the cost is high; the branch pipeline is inconvenient to connect and poor in reliability.
Disclosure of Invention
The invention mainly aims at the defects of the prior art and provides a repair construction method for a trenchless large-caliber water supply pressure pipeline, and the repaired pipeline has small resistance to liquid delivery and good corrosion resistance.
The technical scheme adopted by the invention is as follows: a non-excavation large-caliber water supply pressure pipeline repairing construction method comprises the following steps:
cutting off two sides of the damaged pipeline;
respectively excavating a working pit and a receiving pit at the head end and the tail end of the damaged pipeline;
arranging a pipe jacking device in the working pit, pushing an inner lining pipe into the damaged pipeline by adopting the pipe jacking device, wherein the inner lining pipe is a combination of a glass fiber reinforced plastic sand inclusion pipe and a steel pipe, and sealing joints are arranged among the inner lining pipes of all sections, wherein the inner lining pipes of the head end and the tail end of the damaged pipeline and the pipeline section connected with the branch are made of the steel pipe;
and after the pushing of the lining pipe is finished, a gap between the lining pipe and the damaged pipeline is blocked.
In some embodiments of the method of the present invention, the damaged pipe is cleaned before the step of pushing the lining pipe into the damaged pipe.
In some embodiments of the construction method of the present invention, before the step of pushing the lining pipe into the damaged pipe, the damaged condition and the pipe structure of the damaged pipe are inspected, and a pipe jacking scheme is formulated according to the inspected structure, including: determining the number of the sections and the lengths of the sections of the glass sand inclusion pipe and the steel pipe, and determining construction parameters required by subsequently pushing the lining pipe.
In some embodiments of the construction method of the present invention, the first section of lining pipe at the head end of the damaged pipeline is a steel pipe, and a guide head is installed at the head end of the steel pipe.
In some embodiments of the construction method of the present invention, the sealing joint is a stainless steel joint with an inner ring lined with a rubber sealing ring.
In some embodiments of the construction method, after the lining pipe is pushed in, structural inspection and pressure test are performed in the lining pipe, and after the lining pipe is qualified, a gap between the lining pipe and the damaged pipeline is plugged.
In some embodiments of the construction method of the present invention, after the pushing-in of the lining pipe is completed, the method further includes:
and excavating node working pits at the positions of the pipeline sections for connecting the branches, and installing a tee at the position of the steel pipe pushed in to perform the reconnection of the branch pipeline.
In some embodiments of the construction method of the present invention, after the pushing-in of the lining pipe is completed, the method further includes:
and (4) connecting the steel pipes at the head end and the tail end of the damaged pipeline with the original pipelines cut at two sides.
In some embodiments of the construction method of the present invention, the aperture of the glass fiber reinforced plastic sand inclusion pipe and the aperture of the steel pipe are 100 mm to 200 mm smaller than the aperture of the damaged pipeline.
The trenchless large-caliber water supply pressure pipeline repairing scheme adopted by the invention has the following advantages:
① the construction method has the advantages that the defect of unqualified construction quality or construction failure caused by the early solidification of the thermosetting material in the lining pipe, which is worried by the 'pipeline trenchless reverse rotation lining repair technology' with the patent number of ZL200410054201.6, does not exist, and the construction process is mature, reliable, economical and practical;
② the glass fiber reinforced plastic sand inclusion pipe is a composite pipe, and has the advantages of light weight, small resistance to liquid delivery, good corrosion resistance, long service life and no pollution to water quality;
③ the steel pipe is used in the pipe section to be connected with the branch, so the connection of the branch pipe is more reliable, accurate and convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a construction method for repairing a trenchless large-caliber water supply pressure pipeline in an embodiment of the invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The invention mainly provides a non-excavation large-caliber water supply pressure pipeline repairing construction method, which comprises the working procedures of old pipe scale removal, lining pipe laying, pipeline connection, inspection, pressure test and the like, and is characterized in that: the lining pipe is laid by penetrating a glass fiber reinforced plastic sand inclusion pipe and a steel pipe with the aperture slightly smaller than that of the original mother pipe into the original mother pipe, using the glass fiber reinforced plastic sand inclusion pipe in a pipeline section without branches, using the steel pipe in a pipeline section needing to be connected with the branches, and arranging a joint with sealing and connecting functions between the lining pipes in each section. The construction method is relatively simple, the process is mature, economic and practical, and the repaired pipeline has the advantages of small resistance to liquid delivery, good corrosion resistance, long service life and no water pollution.
The invention is described in further detail below with reference to the figures and specific examples.
Referring to fig. 1, an embodiment of the present invention provides a trenchless large-caliber water supply pressure pipeline repairing construction method, which mainly includes the following steps:
step S1: cutting off two sides of the damaged pipeline;
step S2: respectively excavating a working pit and a receiving pit at the head end and the tail end of the damaged pipeline;
step S3: arranging a pipe jacking device in the working pit, pushing the lining pipe into the damaged pipeline by adopting the pipe jacking device, wherein the lining pipe is a combination of a glass fiber reinforced plastic sand inclusion pipe and a steel pipe, and sealing joints are arranged among the lining pipes in each section, wherein the lining pipes at the head end and the tail end of the damaged pipeline and the pipeline sections connected with branches are steel pipes;
step S4: and after the pushing of the lining pipe is finished, the gap between the lining pipe and the damaged pipeline is blocked.
The aperture of the glass fiber reinforced plastic sand inclusion pipe and the aperture of the steel pipe are optimally smaller than the aperture of the original damaged pipeline by 100-200 mm.
The construction method of the present invention is further described below with reference to a specific embodiment.
The embodiment is the repair construction of a water supply pipeline with the diameter of 1200 mm, a lining pipe is a combination of a glass fiber reinforced plastic sand inclusion pipe and a steel pipe, the caliber of the lining pipe is 1000 mm, and the concrete construction method comprises the following steps:
a. stopping the pipeline to be repaired, cutting off two sides of the damaged pipeline, draining water in the pipeline, excavating a working pit and a receiving pit, and inspecting the condition in the old pipeline by using a digital imaging pipeline inspection device;
b. making a pipe jacking scheme according to the condition of the digital imaging pipeline detection equipment for viewing and knowing;
c. manually scraping and cleaning rust, scale and raised points in the old pipeline;
d. manually removing dirt, rust and garbage in the pipe and cleaning;
e. inspecting the condition in the old pipeline by using digital imaging pipeline inspection equipment;
f. evaluating the processing condition in the old pipeline to determine whether the evaluation conclusion is qualified;
g. and (3) formulating an in-pipe repairing scheme according to the damage condition of the pipeline and the pipeline structure: calculating the total length of the lining pipe, determining a collocation scheme of the glass fiber reinforced plastic sand inclusion pipe and the steel pipe, determining the lengths of each section of the glass fiber reinforced plastic sand inclusion pipe and the steel pipe, calculating the thrust required by pipe penetration construction, calculating the length of top iron required by the pipe penetration construction, and determining the layout of a pipe penetration construction working pit;
h. installing working pit equipment, and arranging pipe jacking special equipment;
i. conveying the needed glass fiber reinforced plastic sand inclusion pipe and the steel pipe to the site according to the length required by the design;
j. the first section of lining pipe is made of a steel pipe, and a guide head is arranged at the end of the steel pipe so as to prevent the lining pipe from being damaged when being pushed into the mother pipe and avoid the phenomenon that the pushing of the lining pipe is blocked because the mother pipe is not straight; pushing the lining pipe into the old pipeline by using a pipe jacking device, namely pushing the steel pipe to a pipeline section needing to be connected with a branch, pushing the glass fiber reinforced plastic sand inclusion pipe to a pipeline section without a branch, and jacking the steel pipe at the head and the tail of the pipe jacking to facilitate the connection with the old pipeline; a stainless steel joint with an inner ring lined with a rubber sealing ring is arranged between each section of lining pipe for mutual connection; in the process of pipe jacking construction, recording jacking pressure, jacking speed, the number of the pipe jacking and the butt joint of pipe jacking interfaces are well recorded;
k. inspecting the interior of the new pipeline by using digital imaging pipeline inspection equipment;
withdrawing the pipe jacking equipment in the working pit after the inspection and evaluation are qualified;
arranging blank plates at the steel plates at the two ends for carrying out a pressure test;
n, using hemp thread, asbestos and cement to plug the gap between the lining pipe and the original mother pipe at the pipe orifice and injecting cement slurry to seal;
o, excavating a node working pit for connecting branch pipeline construction, installing a tee joint and a valve at a jacking steel pipe, connecting the tee joint and the valve after grid connection, and simultaneously plugging new and old pipelines at the tee joint by using cement mortar;
p, washing and disinfecting the pipeline;
q, after washing and disinfection are qualified, connecting the original pipeline to enable the main pipeline to be connected to the grid and to be filled with water;
r, performing branch pipeline reconnection;
and s, completing grid connection.
The trenchless large-caliber water supply pressure pipeline repairing scheme adopted by the invention has the following advantages:
① the construction method has the advantages that the defect of unqualified construction quality or construction failure caused by the early solidification of the thermosetting material in the lining pipe, which is worried by the 'pipeline trenchless reverse rotation lining repair technology' with the patent number of ZL200410054201.6, does not exist, and the construction process is mature, reliable, economical and practical;
② the glass fiber reinforced plastic sand inclusion pipe is a composite pipe, and has the advantages of light weight, small resistance to liquid delivery, good corrosion resistance, long service life and no pollution to water quality;
③ the steel pipe is used in the pipe section to be connected with the branch, so the connection of the branch pipe is more reliable, accurate and convenient.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A non-excavation large-caliber water supply pressure pipeline repairing construction method is characterized by comprising the following steps:
cutting off two sides of the damaged pipeline;
respectively excavating a working pit and a receiving pit at the head end and the tail end of the damaged pipeline;
arranging a pipe jacking device in the working pit, pushing an inner lining pipe into the damaged pipeline by adopting the pipe jacking device, wherein the inner lining pipe is a combination of a glass fiber reinforced plastic sand inclusion pipe and a steel pipe, and sealing joints are arranged among the inner lining pipes of all sections, wherein the inner lining pipes of the head end and the tail end of the damaged pipeline and the pipeline section connected with the branch are made of the steel pipe;
and after the pushing of the lining pipe is finished, a gap between the lining pipe and the damaged pipeline is blocked.
2. The trenchless heavy caliber water supply pressure pipe rehabilitation method of claim 1, wherein before the step of pushing the lining pipe into the damaged pipe, the inside of the damaged pipe is cleaned.
3. The trenchless large-caliber water supply pressure pipeline rehabilitation construction method according to claim 1, wherein before the step of pushing the lining pipe into the damaged pipeline, the damage condition and the pipeline structure of the damaged pipeline are inspected, and a pipe jacking scheme is formulated according to the inspection structure, and the method comprises the following steps: determining the number of the sections and the lengths of the sections of the glass sand inclusion pipe and the steel pipe, and determining construction parameters required by subsequently pushing the lining pipe.
4. The trenchless large-caliber water supply pressure pipeline repairing construction method of claim 1, characterized in that: the first section of lining pipe at the head end of the damaged pipeline is made of a steel pipe, and a guide head is arranged at the end head of the steel pipe.
5. The trenchless large caliber water supply pressure pipe rehabilitation construction method of claim 1, wherein the sealing joint is a stainless steel joint with an inner ring lined with a rubber sealing ring.
6. The trenchless large-caliber water supply pressure pipeline repairing construction method according to claim 1, wherein after the lining pipe is pushed in, structural inspection and pressure test are carried out in the lining pipe, and after the lining pipe is qualified, a gap between the lining pipe and the damaged pipeline is plugged.
7. The trenchless large-caliber water supply pressure pipeline rehabilitation construction method according to claim 1, further comprising the steps of, after the pushing-in of the lining pipe is completed:
and excavating node working pits at the positions of the pipeline sections for connecting the branches, and installing a tee at the position of the steel pipe pushed in to perform the reconnection of the branch pipeline.
8. The trenchless large-caliber water supply pressure pipeline rehabilitation construction method according to claim 1, further comprising the steps of, after the pushing-in of the lining pipe is completed:
and (4) connecting the steel pipes at the head end and the tail end of the damaged pipeline with the original pipelines cut at two sides.
9. The trenchless large-caliber water supply pressure pipeline repairing construction method of claim 1, characterized in that: the aperture of the glass fiber reinforced plastic sand inclusion pipe and the aperture of the steel pipe are smaller than the aperture of the damaged pipeline by 100-200 mm.
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| CN201911297613.5A CN110925517A (en) | 2019-12-17 | 2019-12-17 | Non-excavation large-caliber water supply pressure pipeline repairing construction method |
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| CN201911297613.5A CN110925517A (en) | 2019-12-17 | 2019-12-17 | Non-excavation large-caliber water supply pressure pipeline repairing construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810718A (en) * | 2020-06-11 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | Method for repairing large-diameter sewage main pipe |
| CN111810715A (en) * | 2020-06-18 | 2020-10-23 | 中铁工程装备集团有限公司 | Trenchless pipeline updating method and construction system |
| CN112709313A (en) * | 2020-12-31 | 2021-04-27 | 苏州凯达市政景观建设有限公司 | Municipal sewage pipeline trenchless construction equipment and method |
| CN113136934A (en) * | 2021-04-27 | 2021-07-20 | 四川兢业建设工程有限公司 | PE pipe conveying device for old sewage pipeline repair |
| CN114636046A (en) * | 2022-04-02 | 2022-06-17 | 中山大学 | Non-excavation interpenetration repair method for large-section pipe culvert special-shaped glass fiber reinforced plastic lining with water |
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| CN110159867A (en) * | 2019-06-05 | 2019-08-23 | 保定市金马漏水检测有限公司 | Intert PE pipe repairing method in no-dig technique |
| CN110388531A (en) * | 2019-08-09 | 2019-10-29 | 深圳市艾达凯防水工程有限公司 | A kind of the reinforcing structure and its reinforcement means of pipeline |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111810718A (en) * | 2020-06-11 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | Method for repairing large-diameter sewage main pipe |
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| CN112709313A (en) * | 2020-12-31 | 2021-04-27 | 苏州凯达市政景观建设有限公司 | Municipal sewage pipeline trenchless construction equipment and method |
| CN113136934A (en) * | 2021-04-27 | 2021-07-20 | 四川兢业建设工程有限公司 | PE pipe conveying device for old sewage pipeline repair |
| CN114636046A (en) * | 2022-04-02 | 2022-06-17 | 中山大学 | Non-excavation interpenetration repair method for large-section pipe culvert special-shaped glass fiber reinforced plastic lining with water |
| CN114636046B (en) * | 2022-04-02 | 2024-01-23 | 中山大学 | Non-excavation alternate repairing method for large-section pipe culvert special-shaped glass fiber reinforced plastic lining with water |
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