CN113241682B - Cable laying construction method - Google Patents
Cable laying construction method Download PDFInfo
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- CN113241682B CN113241682B CN202110672867.1A CN202110672867A CN113241682B CN 113241682 B CN113241682 B CN 113241682B CN 202110672867 A CN202110672867 A CN 202110672867A CN 113241682 B CN113241682 B CN 113241682B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
- H02G9/065—Longitudinally split tubes or conduits therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention provides a cable laying construction method, which comprises the following steps: a cable laying construction method comprises the following steps: the method comprises the following steps that firstly, a pipeline for laying a cable is arranged; secondly, a cable jacking well and a cable receiving well are arranged, a pipeline jacking device is adopted to carry out jacking operation on a pipeline from the cable jacking well to the cable receiving well underground so as to lay the pipeline, and thirdly, three cables A, B and C in the same loop are laid in the same pipeline so as to lay the cables; the pipeline is formed by splicing or welding a plurality of pipe sections. The cable laying construction method can lay the pipeline of the cable in a non-excavation ground mode, thereby realizing the laying of the cable and greatly reducing the excavation amount. In addition, the method can greatly shorten the construction period and ensure the quality and the service life of the laid cable.
Description
Technical Field
The invention relates to the technical field of cable construction, in particular to a cable laying construction method.
Background
With the high-speed development of electric power construction and the continuous deepening of urban beautification requirements in China, the application occasions of the cable are gradually increased. The cable has a plurality of applications, is mainly used for controlling connecting equipment, transmitting electric power and other functions, and is a common and indispensable electric power transmission material in production and life. The single-core cable of 110kV and above generally adopts trench well and pipeline laying, and the closer to the urban area, the larger the proportion of cable laying. The current methods for cabling have the following drawbacks:
1. the cable needs to be directly dug for burying the pipe on the road surface or be used as a cable trench, so that the intestines and the belly are opened and broken in cities, and the negative effect on the society is great.
2. Urban underground pipe networks are complex, excavation is difficult to completely avoid existing important pipelines (gas, electric power, military optical cables and the like), and the risk of damage to other underground pipelines caused by excavation is great; the road surface excavation influences traffic, traffic jam can be caused frequently, engineering is stopped frequently by traffic management departments, and the engineering implementation difficulty is very large.
3. At present, all the cable embedded pipes of 110kV and above adopt non-magnetic plastic pipelines, the thermal conductivity of the plastic is poor, namely, a piece of warm-keeping clothes is worn on the cable, the current-carrying capacity of the cable laid by the pipeline is reduced due to the accumulation of heat, and the bottleneck of power transmission of the cable is formed.
4. The cables of 110kV and above are laid in a parallel mode after being penetrated, and because each pipeline is only penetrated by one cable, the mutual distance between the three cables is large, electromagnetic induction can not be well counteracted, on one hand, the induction energy consumption of a cable protective layer is increased, the temperature of the cable is integrally increased due to energy consumption and heating, and the current-carrying capacity of a cable core is further reduced; on the other hand, the electromagnetism may cause interference with an adjacent communication line.
5. The plastic pipeline has poor strength, is easy to be damaged by external force, cannot well protect the cable, and can endanger the stability and the safety of power transmission in serious cases.
At present, the power resources are increasingly in short supply and the city construction is changing day by day, the construction mode for further improving and improving the cable has great practical significance for the development of the city and the improvement of the utilization rate of the power resources.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a cable laying construction method, which can lay a cable pipeline in a non-excavation ground mode, thereby realizing the laying of the cable and greatly reducing the excavation amount. In addition, the method can greatly shorten the construction period and ensure the quality and the service life of the laid cable.
In order to achieve the purpose, the invention is realized by the following technical scheme: a cable laying construction method is characterized in that: the method comprises the following steps:
the method comprises the following steps of firstly, arranging a pipeline for laying a cable;
secondly, a cable jacking well and a cable receiving well are arranged, a pipeline jacking device is adopted to carry out jacking operation of a pipeline from the cable jacking well to the cable receiving well underground so as to lay the pipeline,
thirdly, laying the three cables A, B and C of the same loop into the same pipeline to realize the laying of the cables;
the pipeline is formed by splicing or welding a plurality of pipe sections.
In the scheme, the pipeline is paved by adopting a pipeline jacking operation mode, and the trenchless paving mode greatly reduces the excavation amount and reduces the negative influence on the city. The three cables are laid on the same pipeline, so that the problem that electromagnetic induction can not be well offset due to large cable spacing can be effectively solved, the construction period is greatly shortened, and the quality and the service life of the laid cables are ensured. In addition, the three cables of the invention are all single-core cables, the invention breaks through the traditional laying mode of the single-core cables, and the three single-core cables are laid in the same pipeline, thereby forming a small-sized pipeline, greatly reducing the cable jacking well, the cable receiving well and the pipeline jacking device, reducing the construction cost and ensuring that the three cables have good practicability.
The structural forms of the pipe joint of the invention are as follows:
the first structural form is as follows: each section of the pipe joint is a large pipe, three superposed middle pipes are arranged in the large pipe, the middle pipes are prefabricated in the large pipe or are respectively arranged with the large pipe, and the three cables A, B and C in the same loop are respectively penetrated in the middle pipes.
The three middle pipes are mutually tangent and are all arranged in a tangent way with the inner wall of the large pipe to form a triangle, so that three cables penetrating through the three middle pipes are arranged in a triangle; the large pipe and the middle pipe are both metal pipes.
The middle pipe is provided with a magnetic isolation structure for enabling the single-core cable to be in a non-closed magnetic circuit;
the middle parts of the three middle pipes which are arranged to form the shape of a Chinese character 'pin' are provided with gaps; the magnetism isolating structure is as follows: each middle pipe is of a non-closed structure provided with an opening, the opening faces to the gap, and the gap is communicated with the interior of the middle pipe;
or the magnetism isolating structure is as follows: each middle pipe is of a non-closed structure provided with an opening, the opening faces to the gap, and the gap is provided with a non-magnetic material.
The cables laid by the invention are arranged in a delta shape, and the magnetic isolation structure is arranged, so that the electromagnetic field is relatively balanced, the line inductance is reduced, and the heating of the cables is reduced.
In the third step, the method also comprises the step of laying the communication optical cable into the pipeline; a small pipe is arranged in the large pipe, and the communication optical cable penetrates through the small pipe; the small pipe is connected with the inner wall of the large pipe;
the small pipe is a metal pipeline.
The second structural form is as follows: three through holes are prefabricated in each pipe joint, and the three cables A, B and C of the same circuit are respectively arranged in the through holes in a penetrating manner;
the three through holes are arranged to form a triangle, so that the three cables penetrating through the three through holes are arranged in a triangle; the pipe joints are made of metal or reinforced concrete.
The through hole is provided with a magnetic isolation structure used for enabling the single-core cable to be in a non-closed magnetic circuit;
the middle parts of the three through holes which are arranged to form the shape of a Chinese character 'pin' are provided with gaps; the magnetism isolating structure is as follows: each through hole is a non-closed structure provided with an opening, the opening faces to the gap, and the gap is communicated with the inside of the through hole; or the magnetism isolating structure is as follows: each through hole is of a non-closed structure provided with an opening, the opening faces to the gap, and the gap is provided with a non-magnetic material.
In the third step, a communication optical cable is laid in the pipeline; a small through hole is prefabricated in the pipe joint, and the communication optical cable penetrates through the small through hole.
The pipeline is formed by inserting a plurality of pipe joints, and the following steps are included: one end of the pipe joint is a male plug end, the male plug end is provided with a raised sealing ring, and the other end of the pipe joint is a female plug end; each pipe joint is inserted into the female plug end through the male plug end to realize insertion, and a pipeline is formed. The arrangement of the sealing ring enables the pipe sections to be connected in a sealing mode.
The center distance of the three cables is 8-10mm. Therefore, the magnetic isolation structure between the cables can be ensured, and the magnetic isolation structure is small.
In the second step, the operation of jacking the pipeline from the cable jacking well to the cable receiving well by adopting the pipeline jacking device is as follows: the pipeline jacking device comprises a thrust device and a tool pipe; the pipeline is abutted against the tool pipe, the thrust equipment is adopted to push the pipeline, the tool pipe is tunneled into a soil layer under the thrust action of the thrust equipment, and the excavated soil is discharged and treated, so that the pipeline is jacked and laid to the soil layer; finally, hoisting the tool pipe to the ground from the cable receiving well;
the laying depth of the pipeline is 4-5 m; the pipe section is 2-10 meters in length and 0.2-0.6 meter in outer diameter.
The cable laying construction method has the advantages that:
1. the cable laying construction method can lay cable pipelines on the trenchless ground, can reduce the number of the excavated wells, and greatly reduces the negative influence on the city.
2. The pipe joint of the invention has the length within 10 meters, the outer diameter within 0.6 meter and the pipeline laying depth of 4-5 meters, and because the outer diameter and the laying depth of the pipe joint are greatly reduced, the jacking force of the pipeline jacking device is also greatly reduced in the laying process, a cable jacking well and a cable receiving well do not need to have great depth, and the construction cost of the cable jacking well and the cable receiving well is also greatly reduced.
3. The pipeline is laid four meters underground, and most important urban underground pipelines are laid more than three meters underground.
4. The pipe joint of the invention adopts metal or reinforced concrete, has high strength and can play a better role in protecting cables.
5. The cables are arranged in a delta shape, and the magnetic isolation structure is arranged, so that an electromagnetic field is relatively balanced, the line inductance can be reduced, the heating is reduced, and the current-carrying capacity of the cables is increased. The three cables A, B and C of the same circuit are laid together to form a whole, so that magnetic fluxes generated by the three cables are mutually offset, theoretically, the magnetic fluxes are zero, and a closed magnetic circuit surrounding the three cables cannot generate eddy currents and cannot damage the cables.
6. The pipe joints of the pipeline are made of metal or reinforced concrete, so that the heat dissipation is good, and the heat of the cable is easily absorbed by the pipe joints, so that the temperature is obviously reduced.
7. The pipe section of the pipeline is closed, and conditions can be provided for filling a heat dissipation medium in the pipeline later.
Compared with the prior art, the invention has the following advantages and beneficial effects: the cable laying construction method can lay the pipeline of the cable in a non-excavation ground mode, thereby realizing the laying of the cable and greatly reducing the excavation amount. In addition, the method can greatly shorten the construction period and ensure the quality and the service life of the laid cable.
Drawings
FIG. 1 is a schematic diagram of the cable laying operation of the present invention;
FIG. 2 is a schematic cross-sectional view of a pipe section according to a first embodiment;
FIG. 3 is a schematic end section view of a pipe section;
FIG. 4 is a schematic cross-sectional view of a pipe section according to a third embodiment;
wherein, 1 is a large pipe, 2 is a middle pipe, 3 is a small pipe, 4 is a gap, 5 is a male plug end, 6 is a sealing ring, 7 is a female plug end, 8 is a through hole, 9 is a small through hole, 10 is a cable jacking well, 11 is a cable receiving well, 12 is a middle cable receiving well, 13 is a pipeline, and 14 is the ground.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
As shown in fig. 1 to 3, the cable laying construction method of the present invention includes the steps of:
a first step of providing a conduit 13 for laying cables;
secondly, a cable jacking well 10 and a cable receiving well 11 are arranged on the ground 14, and a pipeline jacking device is adopted to carry out jacking operation on a pipeline from the cable jacking well 10 to the cable receiving well 11 in the underground so as to lay the pipeline; specifically, the laying depth of the pipeline 13 is 4-5 m, the pipeline jacking device comprises a thrust device and a tool pipe, the pipeline 13 abuts against the tool pipe, the pipeline 13 is pushed by the thrust device, the tool pipe is tunneled into a soil layer under the thrust effect of the thrust device, the tunneled soil is discharged, and the pipeline 13 is jacked and laid to the soil layer; finally the tool pipe is suspended to the surface from the cable receiving well 11.
And thirdly, laying the three cables A, B and C in the same loop into the same pipeline 13 to realize the laying of the cables.
Wherein, the pipeline 13 is formed by inserting a plurality of pipe joints or welding. The length of the pipe joint is 2-10 meters, and the outer diameter is 0.2-0.6 meter.
In the second step, at least one intermediate cable receiving well 12 may be provided between the cable advance well 10 and the cable receiving well 11 according to an actual construction length, and the intermediate cable receiving well 12 may facilitate maintenance of the pipeline 13 or the cable in the middle.
As shown in fig. 2, each pipe joint of this embodiment is a large pipe 1, a small pipe 3 and three stacked middle pipes 2 are arranged inside the large pipe 1, the middle pipe 2 is prefabricated in the large pipe 1 or separately arranged from the large pipe 1, three cables a, B, and C of the same loop are respectively inserted into the middle pipe 2, and a communication cable is inserted into the small pipe 3. The small pipes 3 are welded with the inner wall of the large pipe 1, the three middle pipes 2 are mutually tangent and are all welded and arranged with the inner wall of the large pipe 1 in a tangent mode to form a triangle, and therefore three cables penetrating through the three middle pipes 2 are arranged in a triangle mode.
The middle parts of three middle pipes 2 arranged to form a triangle shape in the embodiment have a gap 4, the middle pipe 2 is provided with a magnetism isolating structure for enabling a single-core cable to be in a non-closed magnetic circuit, and the magnetism isolating structure means that: each middle pipe 2 is a non-closed structure provided with an opening, the opening faces to the gap 4, and the gap 4 is communicated with the inside of the middle pipe 2.
The large pipe 1, the middle pipe 2 and the small pipe 3 of the embodiment are all metal pipelines. The cables laid by the invention are arranged in a delta shape, and the magnetism isolating structures are arranged, so that the electromagnetic field can be relatively balanced, the line inductive reactance can be reduced, and the heating of the cables can be reduced. The center distance of the three cables is 8-10mm. Therefore, the magnetic isolation structure can be ensured to be arranged between the cables and is small.
The pipeline is formed by splicing a plurality of pipe sections, and the following steps are included: as shown in fig. 3, one end of the pipe joint is a male spigot 5, the male spigot 5 is provided with two rings of raised sealing rings 6, and the other end of the pipe joint is a female spigot 7; each pipe joint is inserted into the female plug end 7 through the male plug end 5 to realize insertion connection, and a pipeline 13 is formed. The arrangement of the sealing ring 6 of the invention enables the pipe sections to be connected in a sealing way.
The cable laying construction method has the advantages that:
1. the cable laying construction method can lay cable pipelines on the trenchless ground, can reduce the number of the excavated wells, and greatly reduces the negative influence on the city.
2. The pipe joint length of the invention is within 10 meters, the external diameter is within 0.6 meters, the laying depth of the pipeline 13 is 4-5 meters, because the external diameter and the laying depth of the pipe joint are greatly reduced, the jacking force of the pipeline jacking device is also greatly reduced in the laying process, the cable jacking well 10 and the cable receiving well 11 do not need to have great depth, and the construction cost of the cable jacking well 10 and the cable receiving well 11 is greatly reduced.
3. The pipeline 13 is laid four meters underground, and most important urban underground pipelines are laid more than three meters underground.
4. The pipe joint provided by the invention is made of metal or reinforced concrete, has high strength and can better protect cables.
5. The cables are arranged in a delta shape, and the magnetic isolation structure is arranged, so that an electromagnetic field is relatively balanced, the inductive reactance of a line can be reduced, the heating is reduced, and the current-carrying capacity of the cables is increased. The three cables A, B and C of the same circuit are laid together to form a whole, so that magnetic fluxes generated by the three cables are mutually offset, theoretically, the magnetic fluxes are zero, and a closed magnetic circuit surrounding the three cables cannot generate eddy currents and cannot damage the cables.
6. The pipe joints of the pipeline 13 are made of metal or reinforced concrete, so that heat dissipation is good, and the heat of the cable is easily absorbed by the pipe joints, so that the temperature is obviously reduced.
7. The pipe sections of the pipeline 13 are closed, so that conditions can be provided for filling the heat dissipation medium in the pipeline later.
Example two
The present embodiment is different from the first embodiment only in that: the magnetism isolating structure is as follows: each middle pipe is of a non-closed structure with an opening, the opening faces to the gap, and the gap is provided with a non-magnetic material, wherein the non-magnetic material is stainless steel, copper, aluminum and the like.
Other structures of the present embodiment are consistent with the present embodiment.
EXAMPLE III
The present embodiment differs from the first embodiment only in that: as shown in fig. 4, the pipe joint of this embodiment is made of metal or reinforced concrete, three through holes 8 and a small through hole 9 are prefabricated in each pipe joint, three cables a, B, and C of the same circuit are respectively inserted into the through holes 8, and the communication optical cable is inserted into the small through hole 9. Wherein, three through-holes 8 are arranged to form a triangle, so that three cables penetrating through the three through-holes 8 are arranged in a triangle.
The middle part of three through holes 8 arranged to form a triangle shape in the embodiment has a gap 4, the through holes 8 are provided with a magnetism isolating structure for enabling a single-core cable to be in a non-closed magnetic circuit, and the magnetism isolating structure refers to: each through hole 8 is a non-closed structure provided with an opening, the opening faces the gap 4, and the gap 4 is communicated with the inside of the through hole 8.
Other structures of the present embodiment are consistent with the present embodiment.
Example four
The present embodiment is different from the third embodiment only in that: the magnetism isolating structure is as follows: each through hole is a non-closed structure provided with an opening, the opening faces to the gap, and the gap is provided with a non-magnetic material, wherein the non-magnetic material is stainless steel, copper, aluminum and the like.
The other structures of this embodiment are the same as those of the third embodiment.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (3)
1. A cable laying construction method is characterized in that: the method comprises the following steps:
the method comprises the following steps that firstly, a pipeline for laying a cable is arranged;
secondly, a cable jacking well and a cable receiving well are arranged, a pipeline jacking device is adopted to carry out jacking operation of a pipeline from the cable jacking well to the cable receiving well underground so as to lay the pipeline,
thirdly, laying the three cables A, B and C of the same loop into the same pipeline to realize the laying of the cables;
the pipeline is formed by splicing or welding a plurality of pipe sections;
each pipe joint is a large pipe, three superposed middle pipes are arranged in the large pipe, the middle pipes are prefabricated in the large pipe or are respectively arranged with the large pipe, and three cables A, B and C of the same loop are respectively penetrated in the middle pipes;
the three middle pipes are tangent to each other and are arranged in a tangent mode with the inner wall of the large pipe to form a triangular shape, so that three cables penetrating through the three middle pipes are arranged in a triangular shape; the large pipe and the middle pipe are both metal pipes;
the middle pipe is provided with a magnetic isolation structure for enabling magnetic fluxes between the cables to be mutually offset;
the middle parts of the three middle pipes which are arranged to form the shape of a Chinese character 'pin' are provided with gaps;
the magnetism isolating structure is as follows: each middle pipe is of a non-closed structure provided with an opening, the opening faces to the gap, and the gap is communicated with the interior of the middle pipe; or the magnetism isolating structure is as follows: each middle pipe is of a non-closed structure provided with an opening, the opening faces to the gap, and the gap is provided with a non-magnetic material;
in the third step, the method also comprises the step of laying the communication optical cable into the pipeline; a small pipe is arranged in the large pipe, and the communication optical cable penetrates through the small pipe; the small pipe is connected with the inner wall of the large pipe;
the small pipe is a metal pipeline;
or, three through holes are prefabricated in each pipe joint, and the cables A, B and C of the same circuit are respectively arranged in the through holes in a penetrating manner;
the three through holes are arranged to form a Chinese character 'pin', so that the three cables penetrating through the three through holes are arranged in a Chinese character 'pin'; the pipe joints are made of metal or reinforced concrete;
the through hole is provided with a magnetic isolation structure used for enabling the single-core cable to be in a non-closed magnetic circuit;
gaps are arranged in the middle of the three through holes which are arranged to form a Chinese character 'pin'; the magnetism isolating structure is as follows: each through hole is a non-closed structure provided with an opening, the opening faces to the gap, and the gap is communicated with the inside of the through hole; or the magnetism isolating structure is as follows: each through hole is of a non-closed structure provided with an opening, the opening faces to the gap, and the gap is provided with a non-magnetic material;
in the third step, a communication optical cable is laid in the pipeline; a small through hole is prefabricated in the pipe joint, and the communication optical cable penetrates through the small through hole;
the center distance of the three cables is 8-10mm.
2. The cable laying construction method according to claim 1, wherein: the pipeline is formed by splicing a plurality of pipe sections, and the method comprises the following steps: one end of the pipe joint is a male plug end, the male plug end is provided with a raised sealing ring, and the other end of the pipe joint is a female plug end; each pipe joint is inserted into the female insertion end through the male insertion end to realize insertion connection, and a pipeline is formed.
3. The cable laying construction method according to claim 1, wherein: in the second step, the performing of the pipe jacking operation from the cable jacking well to the cable receiving well by using the pipe jacking device means that: the pipeline jacking device comprises a thrust device and a tool pipe; the pipeline is abutted against the tool pipe, the thrust equipment is adopted to push the pipeline, the tool pipe is tunneled into a soil layer under the action of the thrust equipment, and the excavated soil is discharged and treated, so that the pipeline is jacked and paved to the soil layer; finally, hoisting the tool pipe to the ground from the cable receiving well;
the laying depth of the pipeline is 4-5 m; the pipe section is 2-10 m in length and 0.2-0.6 m in outer diameter.
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| CN202110672867.1A CN113241682B (en) | 2021-06-17 | 2021-06-17 | Cable laying construction method |
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| CN202110672867.1A CN113241682B (en) | 2021-06-17 | 2021-06-17 | Cable laying construction method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005012926A (en) * | 2003-06-19 | 2005-01-13 | Sumitomo Electric Ind Ltd | Method of measuring shield current of superconductive cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1163299A (en) * | 1997-08-08 | 1999-03-05 | Odakyu Kensetsu Kk | Execution method of multi-conduit pipe and multi-conduit pipe |
| JP2000213281A (en) * | 1999-01-28 | 2000-08-02 | Japan Steel & Tube Constr Co Ltd | Small diameter pipe arclike jacking method |
| CN202678870U (en) * | 2012-06-29 | 2013-01-16 | 南安市华益塑胶制造有限公司 | Improved cable sheath tube |
| CN103791159A (en) * | 2012-11-02 | 2014-05-14 | 成张佳宁 | Pipe-jacking construction method for small-diameter pipes |
| CN206506252U (en) * | 2017-02-21 | 2017-09-19 | 江苏川都电力科技有限公司 | A kind of aluminum high pressure three-core cable fixes gold utensil |
| CN208571542U (en) * | 2018-07-24 | 2019-03-01 | 中国电建集团华东勘测设计研究院有限公司 | The trenchless installation structure of cable penetration sea wall |
| CN109119943A (en) * | 2018-09-10 | 2019-01-01 | 国网天津市电力公司 | System of laying optimization method of the cable at push pipe both ends |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005012926A (en) * | 2003-06-19 | 2005-01-13 | Sumitomo Electric Ind Ltd | Method of measuring shield current of superconductive cable |
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