CN113932063B - Underground pipeline construction process and migration and modification method - Google Patents
Underground pipeline construction process and migration and modification method Download PDFInfo
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- CN113932063B CN113932063B CN202111131651.0A CN202111131651A CN113932063B CN 113932063 B CN113932063 B CN 113932063B CN 202111131651 A CN202111131651 A CN 202111131651A CN 113932063 B CN113932063 B CN 113932063B
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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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses an underground pipeline relocation method, which comprises the following steps: step S101, judging whether the translation distance is met or not according to the cable surplus length of the original pipeline; the translation distance of the pipeline is defined by the minimum value of the cable surplus length and the pipeline manhole length, and the translation range is 0.5-1.5m; the translation length of the pipeline is preferably the length between adjacent man wells and is not more than 120m; step S102, excavating a new pipe position, and making a cement foundation of the new pipe position; wherein, the cement foundation is cured for at least two days after completion. In the invention, the pipeline is changed by adopting the method of integral translation of the pipeline, the construction period is greatly shortened, the disturbance of people is reduced, the road is restored to the people as soon as possible, and the construction cost of the method is only 2-5% of that of the traditional construction cost.
Description
Technical Field
The invention relates to the technical field of underground pipeline laying and migration and modification, in particular to an underground pipeline construction process and a migration and modification method.
Background
Along with the increase of the urban construction speed, underground channels and subways are built well, however, the ground wire pipelines which are paved are inevitably influenced to a great extent in the construction process, so that the migration, pavement and protection work of the pipelines are very important, and the construction process is a key factor for influencing the potential risk of projects.
However, because the underground pipeline is extremely complex, the migration, laying and protection work is more difficult, and the construction of underground channels and subways can also greatly influence the normal operation of corresponding business of the communication pipeline. The existing pipeline is difficult to move and change, and the part of the reasons are that the prior pipeline construction process method has no corresponding measures, so that the later-stage moving and changing are extremely difficult.
Disclosure of Invention
The invention aims to provide an underground pipeline construction process and a migration and modification method, which are used for solving the technical problem that the pipeline construction process method has no targeted countermeasures, so that later migration and modification are difficult.
In order to achieve the above purpose, the present invention provides the following technical solutions:
according to an aspect of the present invention, there is provided an underground pipeline relocation method comprising the steps of:
step S101, judging whether the translation distance is met or not according to the cable surplus length of the original pipeline;
the translation distance of the pipeline is defined by the minimum value of the cable surplus length and the pipeline manhole length, and the translation range is 0.5-1.5m; the translation length of the pipeline is preferably the length between adjacent man wells and is not more than 120m;
step S102, excavating a new pipe position, and making a cement foundation of the new pipe position;
wherein, the cement foundation is maintained for at least two days after being completed;
step S103, slowly translating the pipeline to a new pipe position, curing the pipeline and a masonry manhole of the new pipe position by cement for at least two days, then moving an old cable to a cable supporting plate in the new manhole, installing a new manhole top cover, and finally returning soil to the new pipe position and repairing a road surface;
the pipeline is fixed through the hoisting assembly during migration, a cable user sleeve positioned in the original manhole is wrapped and fixed through the hoisting assembly, and only the hoisting assembly connected with the pipeline is moved during migration;
and the hoisting assemblies connected with the pipeline are uniformly arranged at intervals of 5 m.
Further, in step S101, the pipe is a seamless steel pipe, and after the pipe satisfies the translation distance, the manhole at both ends of the pipe is removed, and the cement encapsulation of the pipe is removed.
Further, in step S103, when the new pipe position has a special curved pipe position trend, a method of rapidly bending the pipe is adopted, including the following steps:
firstly, determining a bending angle or a bending radian of the pipeline to be bent, determining different supporting points according to the bending angle or the bending radian of the pipeline, making bending protection of the contact part of the pipeline in the manhole, slowly bending the pipeline after the pipeline is arranged at a proper bending position, continuously adjusting the position of the supporting point of the pipeline until the adjustment of the bending angle is completed, and laying the pipeline.
Further, the maximum bending angle of the pipeline is 60 degrees;
preferably, the bending angle of the pipeline is 20-45 degrees.
According to another aspect of the present invention, there is also provided an underground pipeline construction process, comprising the steps of:
s101, excavating a pipe ditch, and excavating the pipe ditch meeting the standard on a planned paving path according to the number of pipelines to be paved;
wherein the total height difference of the pipe ditch is 150-212mm; the bottom width of the pipe ditch is not smaller than 150mm;
step S102, laying a cushion layer, and laying the cushion layer on the ground of the pipe ditch;
wherein the laying thickness of the cushion layer is not less than 10mm;
step S103, a silicon core pipe is laid, the silicon core pipe is tightly blocked before being laid, the silicon core pipe is laid according to the designed trend and position, and after the laying of a section of the silicon core pipe is completed, the silicon core pipe is connected and sealed in time, and then a cable is laid in the silicon core pipe;
when the silicon core pipe is connected, the end face is straight and has no burrs, and foreign matters are prevented from entering the silicon core pipe in the connection process;
when a plurality of silicon core tubes are laid, binding and fixing the silicon core tubes at certain intervals, and leaving gaps between the silicon core tubes and the groove walls of the pipe grooves;
the burial depth of the silicon core pipe is not less than 100mm;
step S104, backfilling and covering, namely, completely burying the laid silicon core pipe with fine soil, backfilling and burying with original soil, and covering with a surface layer until the surface layer is flush with the ground, thereby completing the laying construction of the underground pipeline;
wherein the surface layer is of a reinforced concrete structure, and the thickness of the surface layer is 100-150mm.
Further, in step S101, the bottom of the trench is straight, the height is smoothly transited, no obvious height difference exists, and no protruding sharp object exists;
when the silicon core pipe is laid on a green belt or a roadside, the burial depth and the arrangement width are required to be calculated so as to avoid the influence of an anti-collision fence or an upright post on the laying of the silicon core pipe.
Further, in step S103, the silicon core tube has an outer diameter of 40mm and an inner diameter of 33mm;
the cable is laid by an air blowing method.
Further, in step S103, the silicon core pipe is laid by either a fixed trailer method or a mobile trailer method.
Further, the fixed trailer method is as follows: firstly, taking out the outer end of the silicon core tube from a material tray, rotating the material tray, simultaneously pulling the outer end of the silicon core tube to advance along the direction of the pipe trench, and putting the silicon core tube into the pipe trench after the silicon core tube on the whole material tray is completely put;
wherein, the traction of a plurality of silicon core tubes can be carried out simultaneously;
the mobile trailer method comprises the following steps: the outer end of the silicon core tube on the material tray is pulled out to a section and fixed at the corresponding position of the pipe ditch, then the trailer with the material tray is moved, the material tray is moved forward along the direction of the pipe ditch, the material tray is rotated in the advancing process, and the silicon core tube is safely and nondestructively placed on a roadside slope or in the pipe ditch after being unfolded.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the pipeline is changed by adopting the method of integral translation of the pipeline, the construction period is greatly shortened, the disturbance of people is reduced, the road is restored to the people as soon as possible, and the construction cost of the method is only 2-5% of that of the traditional construction cost.
When the pipeline is changed, the normal pipe position height is not met, particularly when the conventional seamless steel pipe is laid at the complicated pipe position in the old urban area, and the engineering requirement cannot be met, namely, when the pipe position elevation difference is only 150-212mm, the silicon core pipe is adopted to replace the seamless steel pipe, so that the multi-angle bending requirement can be met, and the construction requirement of the communication pipeline can be met.
And the conventional seamless steel pipe (with the outer diameter of 102 mm) can be used for laying the pipe with the height difference of 212-262mm, and the laying process is the same as that of the silicon core pipe.
Drawings
FIG. 1 is a flow chart of a method of pipeline migration;
FIG. 2 is a diagram illustrating the operation of a curved pipe position in an underground pipeline relocation method;
FIG. 3 is a flow chart of an underground pipeline construction process;
fig. 4 is a cross-sectional view of a pipelaying process of an underground pipeline construction.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides the following technical solutions:
according to an aspect of the present invention, there is provided an underground pipeline relocation method comprising the steps of:
step S101, judging whether the translation distance is met or not according to the cable surplus length of the original pipeline;
the translation distance of the pipeline is defined by the minimum value of the cable surplus length and the pipeline manhole length, and the translation range is 0.5-1.5m; the translation length of the pipeline is preferably the length between adjacent man wells and is not more than 120m;
step S102, excavating a new pipe position, and making a cement foundation of the new pipe position;
wherein, the cement foundation is maintained for at least two days after being completed;
step S103, slowly translating the pipeline to a new pipe position, curing the pipeline and a masonry manhole of the new pipe position by cement for at least two days, then moving an old cable to a cable supporting plate in the new manhole, installing a new manhole top cover, and finally returning soil to the new pipe position and repairing a road surface;
the pipeline is fixed through the hoisting assembly during migration, the cable positioned in the original manhole is wrapped by the sheath and fixed by the hoisting assembly, and only the hoisting assembly connected with the pipeline is moved during migration;
and the hoisting assemblies connected with the pipeline are uniformly arranged at intervals of 5 m.
The pipeline is changed by adopting the method of integral translation of the pipeline, the construction period is greatly shortened, the disturbance of people is reduced, the pipeline can be returned to people as soon as possible, and the construction cost of the method is only 2-5% of that of the traditional construction cost.
In the figure, a is a point of pressing a seamless steel tube by a well ring, b is a bending point of supporting the seamless steel tube by the well ring, c is a seamless steel tube, and a 1 Is the angle or arc of the curve.
In order to facilitate understanding of the technical scheme of the present invention, the following examples will be used in detail.
Embodiment one:
an underground pipeline relocation method comprises the following steps:
step S101, judging whether the translation distance is met or not according to the residual length of the cable in the original pipeline, dismantling the manhole at the two ends of the pipeline after the translation distance is met, and removing the cement encapsulation of the pipeline;
the translation distance of the pipeline is defined by the minimum value of the cable surplus length and the pipeline manhole length, and the translation range is 0.5-1.5m; the translation length of the pipeline is preferably not more than 120m between adjacent man-wells, and the pipeline is a seamless steel pipe;
step S102, excavating a new pipe position, and making a cement foundation of the new pipe position;
wherein, the cement foundation is maintained for at least two days after being completed;
step S103, slowly translating the pipeline to a new pipe position, curing the pipeline and a masonry manhole of the new pipe position by cement for at least two days, then moving an old cable to a cable supporting plate in the new manhole, installing a new manhole top cover, and finally returning soil to the new pipe position and repairing a road surface;
the pipeline is fixed through the hoisting assembly during migration, a cable user sleeve positioned in the original manhole is wrapped and fixed through the hoisting assembly, and only the hoisting assembly connected with the pipeline is moved during migration;
and the hoisting assemblies connected with the pipeline are uniformly arranged at intervals of 5 m.
Embodiment two:
according to the method of the first embodiment, the laying process of the pipeline is different when the new pipe position has a special bent pipe position trend, and the method comprises the following steps:
firstly, determining a bending angle or a bending radian of the pipeline to be bent, determining different supporting points according to the bending angle or the bending radian of the pipeline, making bending protection of the contact part of the pipeline in the manhole, slowly bending the pipeline after the pipeline is arranged at a proper bending position, continuously adjusting the position of the supporting point of the pipeline until the adjustment of the bending angle is completed, and laying the pipeline.
Wherein the bending angle of the pipeline is 20-45 degrees.
According to another aspect of the present invention, there is also provided an underground pipeline construction process, comprising the steps of:
s101, excavating a pipe ditch, and excavating the pipe ditch meeting the standard on a planned paving path according to the number of pipelines to be paved;
wherein the total height difference of the pipe ditch is 150-212mm; the bottom width of the pipe ditch is not smaller than 150mm;
step S102, laying a cushion layer, and laying the cushion layer on the ground of the pipe ditch;
wherein the laying thickness of the cushion layer is not less than 10mm;
step S103, a silicon core pipe is laid, the silicon core pipe is tightly blocked before being laid, the silicon core pipe is laid according to the designed trend and position, and after the laying of a section of the silicon core pipe is completed, the silicon core pipe is connected and sealed in time, and then a cable is laid in the silicon core pipe;
when the silicon core pipe is connected, the end face is straight and has no burrs, and foreign matters are prevented from entering the silicon core pipe in the connection process;
when a plurality of silicon core tubes are laid, binding and fixing the silicon core tubes at certain intervals, and leaving gaps between the silicon core tubes and the groove walls of the pipe grooves;
the burial depth of the silicon core pipe is not less than 100mm;
step S104, backfilling and covering, namely, completely burying the laid silicon core pipe with fine soil, backfilling and burying with original soil, and covering with a surface layer until the surface layer is flush with the ground, thereby completing the laying construction of the underground pipeline;
wherein the surface layer is of a reinforced concrete structure, and the thickness of the surface layer is 100-150mm.
When the pipeline is changed, the normal pipe position height is not met, particularly when the conventional seamless steel pipe is laid at the complicated pipe position in the old urban area, and the engineering requirement cannot be met, namely, when the pipe position elevation difference is only 150-212mm, the silicon core pipe is adopted to replace the seamless steel pipe, so that the multi-angle bending requirement can be met, and the construction requirement of the communication pipeline can be met.
And the conventional seamless steel pipe (with the outer diameter of 102 mm) can be used for laying the pipe with the height difference of 212-262mm, and the laying process is the same as that of the silicon core pipe.
Wherein h is the difference of the tube level, d is a cushion layer, e is concrete, f is a silicon core tube, and g is a surface layer.
In order to facilitate understanding of the technical solution of the present invention, the following examples will be further described.
Embodiment III:
an underground pipeline construction process comprises the following steps:
s101, excavating a pipe ditch, and excavating the pipe ditch meeting the standard on a planned paving path according to the number of pipelines to be paved;
wherein the total height difference of the pipe ditch is 150-212mm; the bottom width of the pipe ditch is not smaller than 150mm;
the bottom of the pipe ditch is straight, the height is in stable transition, no obvious elevation difference exists, and no protruding sharp object exists;
when the silicon core pipe is laid on a green belt or a roadside, the burial depth and the arrangement width are required to be calculated so as to avoid the influence of an anti-collision fence or an upright post on the laying of the silicon core pipe;
step S102, laying a cushion layer, and laying the cushion layer on the ground of the pipe ditch;
wherein the laying thickness of the cushion layer is not less than 10mm;
step S103, a silicon core pipe is laid, the silicon core pipe is tightly blocked before being laid, the silicon core pipe is laid according to the designed trend and position, and after the laying of a section of the silicon core pipe is completed, the silicon core pipe is connected and sealed in time, and then a cable is laid in the silicon core pipe by adopting a blowing method;
when the silicon core pipe is connected, the end face is straight and has no burrs, and foreign matters are prevented from entering the silicon core pipe in the connection process;
when a plurality of silicon core tubes are laid, binding and fixing the silicon core tubes at certain intervals, and leaving gaps between the silicon core tubes and the groove walls of the pipe grooves;
the burial depth of the silicon core pipe is not less than 100mm;
the outer diameter of the silicon core tube is 40mm, and the inner diameter of the silicon core tube is 33mm;
when the silicon core pipe is laid, firstly taking the outer end of the silicon core pipe out of the material tray, rotating the material tray, simultaneously pulling the outer end of the silicon core pipe to advance along the direction of the pipe trench, and putting the silicon core pipe into the pipe trench after the silicon core pipe on the whole material tray is completely put;
step S104, backfilling and covering, namely, completely burying the laid silicon core pipe with fine soil, backfilling and burying with original soil, and covering with a surface layer until the surface layer is flush with the ground, thereby completing the laying construction of the underground pipeline;
wherein the surface layer is of a reinforced concrete structure, and the thickness of the surface layer is 100-150mm.
Embodiment four:
according to the method of the first embodiment, the difference is that the laying method of the silicon core tube is different;
when the silicon core pipe is laid, the outer end of the silicon core pipe on the material tray is pulled out for a section and fixed at the corresponding position of the pipe trench, then the trailer with the material tray is moved, the material tray is moved forward along the direction of the pipe trench, the material tray is rotated in the advancing process, and the silicon core pipe is safely and nondestructively placed on a roadside slope or in the pipe trench after being unfolded.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which includes the appended claims and their equivalents.
Claims (2)
1. The construction process of the underground pipeline is characterized by comprising the following steps of:
step S101, judging whether the translation distance is met or not according to the cable surplus length of the original pipeline;
the translation distance of the pipeline is defined by the minimum value of the cable surplus length and the pipeline manhole length, and the translation range is 0.5-1.5m; the translation length of the pipeline is preferably the length between adjacent man wells and is not more than 120m;
step S102, excavating a new pipe position, and making a cement foundation of the new pipe position;
wherein, the cement foundation is maintained for at least two days after being completed;
step S103, slowly translating the pipeline to a new pipe position, curing the pipeline and a masonry manhole of the new pipe position by cement for at least two days, then moving an old cable to a cable supporting plate in the new manhole, installing a new manhole top cover, and finally returning soil to the new pipe position and repairing a road surface;
the pipeline is fixed through the hoisting assembly during migration, a cable user sleeve positioned in the original manhole is wrapped and fixed through the hoisting assembly, and only the hoisting assembly connected with the pipeline is moved during migration;
and the hoisting assemblies connected with the pipeline are uniformly arranged at intervals of 5 m.
2. The underground pipeline construction process according to claim 1, wherein:
in step S101, the pipe is a seamless steel pipe, and after the pipe meets the translation distance, the manhole at the two ends of the pipe is removed, and the cement encapsulation of the pipe is removed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111131651.0A CN113932063B (en) | 2021-09-26 | 2021-09-26 | Underground pipeline construction process and migration and modification method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111131651.0A CN113932063B (en) | 2021-09-26 | 2021-09-26 | Underground pipeline construction process and migration and modification method |
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| CN113932063A CN113932063A (en) | 2022-01-14 |
| CN113932063B true CN113932063B (en) | 2023-08-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203247497U (en) * | 2013-05-23 | 2013-10-23 | 中铁二十局集团电气化工程有限公司 | Bridge type hoisting reconstruction construction structure for communication optical cables |
| CN104184097A (en) * | 2014-09-02 | 2014-12-03 | 广东南方电信规划咨询设计院有限公司 | Non-migration suspension protection system and method for communication pipes and cables |
| CN109610606A (en) * | 2018-12-26 | 2019-04-12 | 中铁隧道局集团有限公司 | Underground piping, which moves, changes cutover construction and method |
| CN111862303A (en) * | 2020-06-30 | 2020-10-30 | 中建八局轨道交通建设有限公司 | BIM technology-based subway station pipeline migration and transformation demonstration method |
-
2021
- 2021-09-26 CN CN202111131651.0A patent/CN113932063B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203247497U (en) * | 2013-05-23 | 2013-10-23 | 中铁二十局集团电气化工程有限公司 | Bridge type hoisting reconstruction construction structure for communication optical cables |
| CN104184097A (en) * | 2014-09-02 | 2014-12-03 | 广东南方电信规划咨询设计院有限公司 | Non-migration suspension protection system and method for communication pipes and cables |
| CN109610606A (en) * | 2018-12-26 | 2019-04-12 | 中铁隧道局集团有限公司 | Underground piping, which moves, changes cutover construction and method |
| CN111862303A (en) * | 2020-06-30 | 2020-10-30 | 中建八局轨道交通建设有限公司 | BIM technology-based subway station pipeline migration and transformation demonstration method |
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