CN113932063A - Underground pipeline construction process and moving and modifying method - Google Patents
Underground pipeline construction process and moving and modifying method Download PDFInfo
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- CN113932063A CN113932063A CN202111131651.0A CN202111131651A CN113932063A CN 113932063 A CN113932063 A CN 113932063A CN 202111131651 A CN202111131651 A CN 202111131651A CN 113932063 A CN113932063 A CN 113932063A
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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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- Mechanical Engineering (AREA)
- Sewage (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses an underground pipeline moving and modifying method, which comprises the following steps: step S101, judging whether the translation distance is met or not according to the excess length of the cable of the original pipeline; wherein the translation distance of the pipeline is limited by the minimum value of the extra length of the cable and the length of the manhole of the pipeline, and the translation range is 0.5-1.5 m; the translation length of the pipeline is preferably the length between adjacent manhole wells and is not more than 120 m; 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 completion. In the invention, the pipeline is moved and changed by adopting a pipeline integral translation method, the construction period is greatly shortened, the disturbance to residents is reduced, the way to residents can be returned as soon as possible, and the construction cost by adopting the method is only 2-5% of the traditional construction cost.
Description
Technical Field
The invention relates to the technical field of laying and moving and modifying of underground pipelines, in particular to an underground pipeline construction process and a moving and modifying method.
Background
With the increase of the speed of urban construction, underground passages and subways are constructed well-adapted, but the construction process inevitably affects the already laid ground line pipelines to a great extent, so that the operations of moving, changing, laying and protecting the pipelines are very important and are key factors for controlling the construction period to affect the potential risks of the project in the construction process.
However, underground pipelines are extremely complex, so that moving, modifying, laying and protecting work is difficult, and the normal operation of corresponding services of communication pipelines can be influenced to a great extent by the construction of underground passages and subways. The existing pipeline is difficult to move and change, and part of reasons are that the existing pipeline construction process method has no targeted counter measures, so that the later-stage moving and changing is difficult to achieve.
Disclosure of Invention
The invention aims to provide an underground pipeline construction process and a moving and modifying method, and aims to solve the technical problem that the moving and modifying are difficult and extremely difficult in the later period due to the fact that the pipeline construction process method has no targeted counter measures.
In order to achieve the purpose, the invention provides the following technical scheme:
according to one aspect of the invention, an underground pipeline moving and modifying method is provided, which comprises the following steps:
step S101, judging whether the translation distance is met or not according to the excess length of the cable of the original pipeline;
wherein the translation distance of the pipeline is limited by the minimum value of the extra length of the cable and the length of the manhole of the pipeline, and the translation range is 0.5-1.5 m; the translation length of the pipeline is preferably the length between adjacent manhole wells and is not more than 120 m;
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 finished;
step S103, slowly translating the pipeline to a new pipe position, encapsulating the pipeline and the masonry manhole at the new pipe position with cement, maintaining for at least two days, moving an old cable to a cable supporting plate in the new manhole, installing a top cover of the new manhole, and finally returning soil at the new pipe position and repairing a road surface;
the pipeline is fixed through a hoisting component during migration, then a cable user sleeve positioned in an original manhole is wrapped and fixed through the hoisting component, and only the hoisting component connected with the pipeline is moved during migration;
and the hoisting components connected with the pipeline are uniformly arranged at intervals of 5 m.
Further, in step S101, the pipeline is a seamless steel pipe, and after the pipeline meets the translation distance, the manhole shafts at two ends of the pipeline are removed, and the cement envelope of the pipeline is removed.
Further, in step S103, when the new pipe position has a special curved pipe position trend, a method of quickly bending the pipe is adopted, which includes the following steps:
firstly, determining the bending angle or the bending radian of the pipeline to be bent, then determining different supporting points according to the bending angle or the bending radian of the pipeline, well protecting the contact part of the pipeline in the manhole against bending, then placing the pipeline at a proper bending position and slowly bending the pipeline, 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 pipe is 60 °;
preferably, the bending angle of the pipe is 20-45 °.
According to another aspect of the present invention, there is also provided an underground pipeline construction process, including the steps of:
step S101, excavating pipe ditches, and excavating the pipe ditches meeting the standard on a planned laying path according to the quantity of pipelines to be laid;
wherein, the total height difference of the pipe trench is 150-212 mm; the width of the lower bottom of the pipe trench is not less than 150 mm;
step S102, laying a cushion layer, wherein the cushion layer is laid on the ground of the pipe trench;
wherein the laying thickness of the cushion layer is not less than 10 mm;
s103, laying a silicon core pipe, tightly sealing the silicon core pipe before laying, laying according to the designed trend and position, connecting and sealing in time after laying of a section of the silicon core pipe is finished, and laying a cable in the silicon core pipe;
when the silicon core pipe is connected, the end face is straight and has no burr, and foreign matters are prevented from entering the silicon core pipe in the connection process;
when a plurality of silicon core pipes are laid, the silicon core pipes are bound and fixed at intervals, and gaps are reserved among the silicon core pipes and between the silicon core pipes and the wall of the pipe ditch;
the buried depth of the silicon core pipe is not less than 100 mm;
step S104, backfilling and covering, namely completely burying the laid silicon core pipes with fine soil, backfilling and burying with original soil, and covering with a surface layer until the surface layer is flush with the ground, so as to finish laying construction of underground pipelines;
wherein, the surface layer is of a reinforced concrete structure, and the thickness of the surface layer is 100-150 mm.
Further, in step S101, the trench bottom of the pipe trench is straight, the height of the trench is in smooth transition, no obvious height difference exists, and no protruding sharp object exists;
when the silicon core pipes are laid on a green belt or a roadside, the buried depth and the arrangement width need to be calculated so as to avoid the influence of the anti-collision fence or the upright column on the laying of the silicon core pipes.
Further, in step S103, the outer diameter of the silicon core tube is 40mm, and the inner diameter is 33 mm;
and the cable is laid by adopting 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: taking the outer end of the silicon core pipe out of the material tray, rotating the material tray, and simultaneously drawing the outer end of the silicon core pipe to move forwards along the pipe ditch direction, and putting the silicon core pipe into the pipe ditch after the silicon core pipe on the whole material tray is completely put;
wherein, the pulling of a plurality of silicon core pipes can be carried out simultaneously;
the mobile trailer method comprises the following steps: firstly, the outer end of the silicon core tube on the material tray is dragged out to be a section and fixed at the corresponding position of the pipe ditch, then the trailer provided with the material tray is moved to move forward along the pipe ditch direction, the material tray is rotated in the advancing process, and the silicon core tube is unfolded and then safely and nondestructively placed on a road slope or in the pipe ditch.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the pipeline is moved and changed by adopting a pipeline integral translation method, the construction period is greatly shortened, the disturbance to residents is reduced, the way to residents can be returned as soon as possible, and the construction cost by adopting the method is only 2-5% of the traditional construction cost.
When the normal pipe position height can not be met during pipeline moving and changing, particularly when the complicated pipe position in an old city area causes that the pipe position laid by the conventional seamless steel pipe cannot meet the engineering requirement, namely the height difference of the pipe position is only 150-212mm, the silicon core pipe is adopted to replace the seamless steel pipe, so that the requirement of multi-angle bending can be met, and the construction requirement of the communication pipeline can also be met.
The height difference of the pipe position is only 212-262mm, and a conventional seamless steel pipe (the outer diameter is 102mm) can be adopted for laying, and the laying process is the same as that of the silicon core pipe.
Drawings
FIG. 1 is a flow chart of a method for migrating and modifying an underground utility;
FIG. 2 is a view illustrating an operation structure of a bending position in an underground pipeline relocation method;
FIG. 3 is a flow chart of an underground utility construction process;
fig. 4 is a cross-sectional view illustrating a pipe laying process in an underground pipeline construction process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides the following technical solutions:
according to one aspect of the invention, an underground pipeline moving and modifying method is provided, which comprises the following steps:
step S101, judging whether the translation distance is met or not according to the excess length of the cable of the original pipeline;
wherein the translation distance of the pipeline is limited by the minimum value of the extra length of the cable and the length of the manhole of the pipeline, and the translation range is 0.5-1.5 m; the translation length of the pipeline is preferably the length between adjacent manhole wells and is not more than 120 m;
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 finished;
step S103, slowly translating the pipeline to a new pipe position, encapsulating the pipeline and the masonry manhole at the new pipe position with cement, maintaining for at least two days, moving an old cable to a cable supporting plate in the new manhole, installing a top cover of the new manhole, and finally returning soil at the new pipe position and repairing a road surface;
the pipeline is fixed through a hoisting component during migration, then the cable in the original manhole is wrapped by a sheath and fixed by the hoisting component, and only the hoisting component connected with the pipeline is moved during migration;
and the hoisting components connected with the pipeline are uniformly arranged at intervals of 5 m.
The method for moving and modifying the pipeline by integrally translating the pipeline greatly shortens the construction period, reduces disturbance to residents, and can return to residents as soon as possible, and the construction cost by adopting the method is only 2-5% of the traditional construction cost.
In the figure, a is a well ring pressing seamless steel pipe point, b is a well ring supporting seamless steel pipe bending point, c is a seamless steel pipe, and a1An angle of curvature or arc.
In order to facilitate understanding of the technical aspects of the present invention, the following examples will be used for detailed description.
The first embodiment is as follows:
an underground pipeline moving and modifying method comprises the following steps:
step S101, judging whether the translation distance is met or not according to the excess length of the cable in the original pipeline, dismantling manhole shafts at two ends of the pipeline after the pipeline meets the translation distance, and removing cement encapsulation of the pipeline;
wherein the translation distance of the pipeline is limited by the minimum value of the extra length of the cable and the length of the manhole of the pipeline, and the translation range is 0.5-1.5 m; the translation length of the pipeline is preferably the length between adjacent manhole wells, and is not more than 120m, 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 finished;
step S103, slowly translating the pipeline to a new pipe position, encapsulating the pipeline and the masonry manhole at the new pipe position with cement, maintaining for at least two days, moving an old cable to a cable supporting plate in the new manhole, installing a top cover of the new manhole, and finally returning soil at the new pipe position and repairing a road surface;
the pipeline is fixed through a hoisting component during migration, then a cable user sleeve positioned in an original manhole is wrapped and fixed through the hoisting component, and only the hoisting component connected with the pipeline is moved during migration;
and the hoisting components connected with the pipeline are uniformly arranged at intervals of 5 m.
Example two:
according to the method of the first embodiment, except that the laying process of the pipeline is different when the new pipe position has a special bent pipe position trend, the method comprises the following steps:
firstly, determining the bending angle or the bending radian of the pipeline to be bent, then determining different supporting points according to the bending angle or the bending radian of the pipeline, well protecting the contact part of the pipeline in the manhole against bending, then placing the pipeline at a proper bending position and slowly bending the pipeline, 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, including the steps of:
step S101, excavating pipe ditches, and excavating the pipe ditches meeting the standard on a planned laying path according to the quantity of pipelines to be laid;
wherein, the total height difference of the pipe trench is 150-212 mm; the width of the lower bottom of the pipe trench is not less than 150 mm;
step S102, laying a cushion layer, wherein the cushion layer is laid on the ground of the pipe trench;
wherein the laying thickness of the cushion layer is not less than 10 mm;
s103, laying a silicon core pipe, tightly sealing the silicon core pipe before laying, laying according to the designed trend and position, connecting and sealing in time after laying of a section of the silicon core pipe is finished, and laying a cable in the silicon core pipe;
when the silicon core pipe is connected, the end face is straight and has no burr, and foreign matters are prevented from entering the silicon core pipe in the connection process;
when a plurality of silicon core pipes are laid, the silicon core pipes are bound and fixed at intervals, and gaps are reserved among the silicon core pipes and between the silicon core pipes and the wall of the pipe ditch;
the buried depth of the silicon core pipe is not less than 100 mm;
step S104, backfilling and covering, namely completely burying the laid silicon core pipes with fine soil, backfilling and burying with original soil, and covering with a surface layer until the surface layer is flush with the ground, so as to finish laying construction of underground pipelines;
wherein, the surface layer is of a reinforced concrete structure, and the thickness of the surface layer is 100-150 mm.
When the normal pipe position height can not be met during pipeline moving and changing, particularly when the complicated pipe position in an old city area causes that the pipe position laid by the conventional seamless steel pipe cannot meet the engineering requirement, namely the height difference of the pipe position is only 150-212mm, the silicon core pipe is adopted to replace the seamless steel pipe, so that the requirement of multi-angle bending can be met, and the construction requirement of the communication pipeline can also be met.
The height difference of the pipe position is only 212-262mm, and a conventional seamless steel pipe (the outer diameter is 102mm) can be adopted for laying, and the laying process is the same as that of the silicon core pipe.
Wherein h is the height difference of the pipe position, d is a cushion layer, e is concrete, f is a silicon core pipe, and g is a surface layer.
In order to facilitate understanding of the technical solutions of the present invention, the following examples are further illustrated.
Example three:
an underground pipeline construction process comprises the following steps:
step S101, excavating pipe ditches, and excavating the pipe ditches meeting the standard on a planned laying path according to the quantity of pipelines to be laid;
wherein, the total height difference of the pipe trench is 150-212 mm; the width of the lower bottom of the pipe trench is not less than 150 mm;
the bottom of the pipe ditch is straight, the height is stably transited, no obvious height difference exists, and no protruding sharp object exists;
when the silicon core pipes are laid on a green belt or a roadside, the buried depth and the arrangement width need to be calculated so as to avoid the influence of an anti-collision fence or an upright column on the laying of the silicon core pipes;
step S102, laying a cushion layer, wherein the cushion layer is laid on the ground of the pipe trench;
wherein the laying thickness of the cushion layer is not less than 10 mm;
s103, laying a silicon core pipe, tightly sealing the silicon core pipe before laying, laying according to the designed trend and position, connecting and sealing in time after laying of a section of the silicon core pipe is finished, and laying a cable in the silicon core pipe by adopting an air blowing method;
when the silicon core pipe is connected, the end face is straight and has no burr, and foreign matters are prevented from entering the silicon core pipe in the connection process;
when a plurality of silicon core pipes are laid, the silicon core pipes are bound and fixed at intervals, and gaps are reserved among the silicon core pipes and between the silicon core pipes and the wall of the pipe ditch;
the buried depth of the silicon core pipe is not less than 100 mm;
the outer diameter of the silicon core pipe is 40mm, and the inner diameter of the silicon core pipe is 33 mm;
when the silicon core pipe is laid, the outer end of the silicon core pipe is taken out of a material tray, the outer end of the silicon core pipe is pulled to advance along the pipe ditch direction while the material tray is rotated, and the silicon core pipe is put into the pipe ditch 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 pipes with fine soil, backfilling and burying with original soil, and covering with a surface layer until the surface layer is flush with the ground, so as to finish laying construction of underground pipelines;
wherein, the surface layer is of a reinforced concrete structure, and the thickness of the surface layer is 100-150 mm.
Example four:
according to the method of the first embodiment, the different laying methods of the silicon core pipes are different;
when the silicon core tube is laid, the outer end of the silicon core tube on the material tray is firstly dragged out to form a section and fixed at the corresponding position of the pipe ditch, then the trailer provided with the material tray is moved to move forward along the direction of the pipe ditch, the material tray is rotated in the forward process, and the silicon core tube is laid on a roadside slope or in the pipe ditch safely and nondestructively after being unfolded.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which includes the appended claims and their equivalents.
Claims (9)
1. The underground pipeline moving and modifying method is characterized by comprising the following steps:
step S101, judging whether the translation distance is met or not according to the excess length of the cable of the original pipeline;
wherein the translation distance of the pipeline is limited by the minimum value of the extra length of the cable and the length of the manhole of the pipeline, and the translation range is 0.5-1.5 m; the translation length of the pipeline is preferably the length between adjacent manhole wells and is not more than 120 m;
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 finished;
step S103, slowly translating the pipeline to a new pipe position, encapsulating the pipeline and the masonry manhole at the new pipe position with cement, maintaining for at least two days, moving an old cable to a cable supporting plate in the new manhole, installing a top cover of the new manhole, and finally returning soil at the new pipe position and repairing a road surface;
the pipeline is fixed through a hoisting component during migration, then the cable in the original manhole is wrapped by a sheath and fixed by the hoisting component, and only the hoisting component connected with the pipeline is moved during migration;
and the hoisting components connected with the pipeline are uniformly arranged at intervals of 5 m.
2. The underground pipeline relocation method according to claim 1, wherein:
in the step S101, the pipeline is a seamless steel pipe, and after the pipeline meets the translation distance, the manhole shafts at two ends of the pipeline are dismantled, and the cement envelope of the pipeline is removed.
3. The underground pipeline relocation method according to claim 1, wherein:
in step S103, when the new pipe position has a special bent pipe position trend, a method of quickly bending the pipe is adopted, which includes the following steps:
firstly, determining the bending angle or the bending radian of the pipeline to be bent, then determining different supporting points according to the bending angle or the bending radian of the pipeline, well protecting the contact part of the pipeline in the manhole against bending, then placing the pipeline at a proper bending position and slowly bending the pipeline, continuously adjusting the position of the supporting point of the pipeline until the adjustment of the bending angle is completed, and laying the pipeline.
4. The underground pipeline relocation method according to claim 3, wherein:
the maximum bending angle of the pipeline is 60 degrees;
preferably, the bending angle of the pipe is 20-45 °.
5. An underground pipeline construction process for facilitating the migration and the modification by the method of claim 1, comprising the steps of:
step S101, excavating pipe ditches, and excavating the pipe ditches meeting the standard on a planned laying path according to the quantity of pipelines to be laid;
wherein, the total height difference of the pipe trench is 150-212 mm; the width of the lower bottom of the pipe trench is not less than 150 mm;
step S102, laying a cushion layer, wherein the cushion layer is laid on the ground of the pipe trench;
wherein the laying thickness of the cushion layer is not less than 10 mm;
s103, laying a silicon core pipe, tightly sealing the silicon core pipe before laying, laying according to the designed trend and position, connecting and sealing in time after laying of a section of the silicon core pipe is finished, and laying a cable in the silicon core pipe;
when the silicon core pipe is connected, the end face is straight and has no burr, and foreign matters are prevented from entering the silicon core pipe in the connection process;
when a plurality of silicon core pipes are laid, the silicon core pipes are bound and fixed at intervals, and gaps are reserved among the silicon core pipes and between the silicon core pipes and the wall of the pipe ditch;
the buried depth of the silicon core pipe is not less than 100 mm;
step S104, backfilling and covering, namely completely burying the laid silicon core pipes with fine soil, backfilling and burying with original soil, and covering with a surface layer until the surface layer is flush with the ground, so as to finish laying construction of underground pipelines;
wherein, the surface layer is of a reinforced concrete structure, and the thickness of the surface layer is 100-150 mm.
6. The underground pipeline construction process according to claim 5, wherein:
in the step S101, the bottom of the pipe ditch is straight, the height is stably transited, no obvious height difference exists, and no protruding sharp object exists;
when the silicon core pipes are laid on a green belt or a roadside, the buried depth and the arrangement width need to be calculated so as to avoid the influence of the anti-collision fence or the upright column on the laying of the silicon core pipes.
7. The underground pipeline construction process according to claim 5, wherein:
in step S103, the outer diameter of the silicon core pipe is 40mm, and the inner diameter of the silicon core pipe is 33 mm;
and the cable is laid by adopting an air blowing method.
8. The underground pipeline construction process according to claim 5, wherein:
in step S103, the silicon core pipe is laid by either a fixed trailer method or a mobile trailer method.
9. The underground pipeline construction process according to claim 8, wherein:
the fixed trailer method comprises the following steps: taking the outer end of the silicon core pipe out of the material tray, rotating the material tray, and simultaneously drawing the outer end of the silicon core pipe to move forwards along the pipe ditch direction, and putting the silicon core pipe into the pipe ditch after the silicon core pipe on the whole material tray is completely put;
wherein, the pulling of a plurality of silicon core pipes can be carried out simultaneously;
the mobile trailer method comprises the following steps: firstly, the outer end of the silicon core tube on the material tray is dragged out to be a section and fixed at the corresponding position of the pipe ditch, then the trailer provided with the material tray is moved to move forward along the pipe ditch direction, the material tray is rotated in the advancing process, and the silicon core tube is unfolded and then safely and nondestructively placed on a road slope or in the pipe ditch.
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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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