CN113644594A - Flush buried submarine cable laying method - Google Patents
Flush buried submarine cable laying method Download PDFInfo
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- CN113644594A CN113644594A CN202110863023.5A CN202110863023A CN113644594A CN 113644594 A CN113644594 A CN 113644594A CN 202110863023 A CN202110863023 A CN 202110863023A CN 113644594 A CN113644594 A CN 113644594A
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- Prior art keywords
- plough
- submarine cable
- water
- laying
- buried
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- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000008400 supply water Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 2
- 206010024453 Ligament sprain Diseases 0.000 description 1
- 208000010040 Sprains and Strains Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
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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
- H02G1/10—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle in or under water
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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
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
Landscapes
- Electric Cable Installation (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a flush buried submarine cable laying method, which comprises S1, loading a submarine cable into a submarine cable channel of a buried plough, and enabling the buried plough to enter water; s2, slowly putting the embedded plough into water and building a slope; s3, laying the burying plough; and S4, recovering the embedded plough, and putting the submarine cable into the water to finish laying. The invention realizes the accurate laying of the position of the submarine cable by arranging the burying plough, the monitoring system and the positioning system.
Description
Technical Field
The invention relates to the technical field of submarine cable engineering, in particular to a flush buried submarine cable laying method.
Background
The submarine cable has important practical significance and market value as one of main equipment in the field of ocean power transmission, the main cost investment of submarine cable line construction comprises two aspects of submarine cable body and submarine cable construction, the construction of the submarine cable needs to depend on a professional construction ship, and the construction period directly determines the construction cost. With the development and utilization of ocean resources, people pay more attention to ocean interests, and the submarine power cable is increasingly widely applied. Monitoring the operation state and diagnosing faults are the prerequisite for subsequent fault prevention and maintenance, and are very important for ensuring the safe and stable operation of the submarine cable. The insulating part of the submarine cable is easy to damage, and the condition of the submarine cable is directly related to whether the submarine cable can safely and stably operate.
In the prior art, use directly to lay the submarine cable, this kind of mode can have the damage to the submarine cable, leads to the function of follow-up submarine cable to receive the influence.
Therefore, it is necessary to provide a new type of buried submarine cable laying method to perform protected burying of submarine cables.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a flush buried submarine cable laying method, which realizes the laying of submarine cables by laying a buried plough.
In order to achieve the purpose, the invention provides the following technical scheme: a flush-buried submarine cable laying method comprises the following steps:
s1, the submarine cable is loaded into the submarine cable channel of the embedded plough, and the embedded plough enters the water;
s2, slowly putting the embedded plough into water and building a slope;
s3, laying the burying plough;
and S4, recovering the embedded plough, and putting the submarine cable into the water to finish laying.
Preferably, in said S1, burying the plow into the water includes the steps of:
s11, starting a buried depth monitoring system;
s12, starting the navigation positioning system;
s13, hoisting the embedded plough to separate from the placement frame;
s14, starting a high-pressure water pump of the embedded plough to supply water;
s15, slowly lowering the laying plough to lay the surface of the seabed;
s16, the diver checks whether the submarine cable is at the preset position in the embedded plough under water, if yes, the next operation is carried out, and if not, the submarine cable is adjusted to the preset position;
and S17, starting the traction winch to bury, and controlling the vertical angle of the burying plough entering water to be between 40 and 50 degrees.
Preferably, in S2, the water jet speed and the ship speed of the high pressure water pump nozzle of the embedded plough are controlled to meet the requirement of the depth of the slope of the sea ditch.
Preferably, in the step S3, the towing speed, the water pump pressure and the burying speed of the burying plow are matched, and the burying speed is 2 m/min.
Preferably, in S3, the berth is adjusted by retracting the anchor line to control the berth and thus the laying deviation.
Preferably, in S4, the buried plow collection includes the steps of:
s41, the embedding plough slowly builds a slope by adopting a traction steel cable and an embedding plough hoisting rigging to finish the embedding operation;
s42, hanging the embedded plough out of the water surface by a crane, and placing the embedded plough at the middle part of the stern by adjusting a traction steel cable and a lifting rigging;
s43, taking out the submarine cable from the cable trough of the embedded plough;
and S44, moving the embedded plough to the trolley bracket, and then realizing landing.
Preferably, in the S43, the vertical angle between the incoming water and the sea cable is maintained between 25 degrees and 35 degrees when the sea cable is taken out.
The invention has the beneficial effects that:
1. the invention relates to a flush buried submarine cable laying method, which realizes the laying of submarine cables by laying a burying plow.
2. The invention realizes the correct laying of the position of the submarine cable and prevents the position deviation by adopting the detection system and the positioning system.
Drawings
Fig. 1 is a schematic flow chart of a flush-buried submarine cable laying method according to the present invention.
Detailed Description
The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
As shown in fig. 1, the method for laying buried sea cable disclosed by the invention comprises the following steps:
s1, the submarine cable is loaded into the submarine cable channel of the embedded plough, and the embedded plough enters the water;
s2, slowly putting the embedded plough into water and building a slope;
s3, laying the burying plough;
and S4, recovering the embedded plough, and putting the submarine cable into the water to finish laying.
Further, in the S1, the burying of the plow into the water includes the steps of: s11, starting a buried depth monitoring system for monitoring the buried depth of the buried plow; s12, starting a navigation positioning system for monitoring the position of the embedded plough in real time to prevent the position from deviating; s13, hoisting the embedded plough and dropping off the placement frame; s14, starting a high-pressure water pump of the embedded plough to supply water so as to enable the embedded plough to better enter water; s15, slowly lowering the laying plough down on the surface of the laying seabed to enter water at a preset angle; s16, the diver checks whether the submarine cable is at the preset position in the embedded plough underwater, if yes, the next operation is carried out, if not, the submarine cable is adjusted to the preset position, and the final purpose that the submarine cable cannot be realized after a series of operations due to incorrect position of the submarine cable is prevented; and S17, starting the traction winch to bury, and controlling the vertical angle of the buried plough to be between 40 and 50 degrees, wherein the angle of the buried plough to be submerged is controlled to ensure the position of the final submarine cable.
In the step S2, the requirement of the sea ditch slope making depth is met by controlling the water flow jet speed and the ship speed of a high-pressure water pump nozzle of the embedded plough, the construction ship gradually increases the water flow speed by controlling the embedded plough, the embedded depth gradually reaches the designed depth from 1m, 1.5m and 2m, and the ship is driven at a constant speed, so that the slope length is ensured, and the sea cable is prevented from being twisted; meanwhile, the angle of the embedded plough entering water, the bending radius of the embedded plough, the water entering amount of the embedded plough, the moving distance of the ship and the like are observed. According to the bending radius of the submarine cable, the embedded plough is used for slowly building a slope, so that the phenomenon that the submarine cable is suspended or has an overlarge angle to cause sprain is prevented.
In S3, the laying speed is determined according to the specific geological conditions and other conditions, and in the present invention, the laying speed is 2m/min, and the pulling speed, the water pump pressure, and the posture of the burying plow are all matched with the burying speed during the construction process. Preferably, the condition that the ship position deviates from a designed route can occur under the influence of tidal current and wind speed in construction, the ship position is adjusted by retracting and releasing the anchor cables, and if the ship position meets an area with overlarge current and wind speed, the ship position can be controlled by pushing the ship position on the leeward side or the leeward side of the construction ship by adopting the anchor boat so as to control the deviation of the cable laying. Control room positioning, anchor machine operation, buried plow observer, and reporting the ship position coordinate and deviation, buried plow traction force, buried depth, buried machine attitude, flow velocity, wind power and other data at any time.
In S4, the buried plow collection method includes the steps of: and S41, the embedded plough is slowly built on the slope by adopting the traction steel cable and the embedded plough lifting rigging, and the position of the embedded plough is prevented from deviating by slow operation. S42, hanging the embedded plough out of the water by a crane, and adjusting the traction steel cable and the lifting rigging to place the embedded plough at the middle part of the stern so as to be convenient for taking out the submarine cable in the embedded plough. And S43, taking out the submarine cable from the cable trough of the buried plough, and keeping the vertical angle of the submarine cable to the water entering between 25 and 35 degrees and between the set angles when the submarine cable is taken out, so as to prevent the incorrect laying position caused by the deviation of the angles. S44, moving the embedded plough to the trolley bracket, and then landing, thereby completely realizing the laying process of the submarine cable.
Preferably, in the invention, in order to ensure the accuracy of the submarine cable construction route, the DGPS satellite navigation positioning instrument is used for positioning navigation, the VECTORDGNSS is used as the positioning equipment, and the positioning accuracy can reach sub-meter level. The anchor throwing boat for auxiliary operation is also provided with professional positioning equipment, the position of the anchor boat can be displayed in a main boat positioning system in real time through a data chain technology, the problem that the conventional point cannot be reached is avoided, and the whole anchoring and positioning process is in a controllable state. Meanwhile, the problem that the positioning precision is insufficient by only depending on the DGPS on the ship of the anchor boat is solved.
Therefore, the scope of the present invention should not be limited to the disclosure of the embodiments, but includes various alternatives and modifications without departing from the scope of the present invention, which is defined by the claims of the present patent application.
Claims (7)
1. A flush-buried submarine cable laying method is characterized by comprising the following steps:
s1, the submarine cable is loaded into the submarine cable channel of the embedded plough, and the embedded plough enters the water;
s2, slowly putting the embedded plough into water and building a slope;
s3, laying the burying plough;
and S4, recovering the embedded plough, and putting the submarine cable into the water to finish laying.
2. The flush-buried marine cable laying method according to claim 1, wherein in said S1, the step of laying a plow into the water comprises:
s11, starting a buried depth monitoring system;
s12, starting the navigation positioning system;
s13, hoisting the embedded plough to separate from the placement frame;
s14, starting a high-pressure water pump of the embedded plough to supply water;
s15, slowly lowering the laying plough to lay the surface of the seabed;
s16, the diver checks whether the submarine cable is at the preset position in the embedded plough under water, if yes, the next operation is carried out, and if not, the submarine cable is adjusted to the preset position;
and S17, starting the traction winch to bury, and controlling the vertical angle of the burying plough entering water to be between 40 and 50 degrees.
3. The method of claim 1, wherein the step S2 is performed by controlling the water jet speed and the ship speed of the high pressure water pump jet of the burying plow to meet the requirement of the slope making depth of the sea ditch.
4. The flush-buried submarine cable laying method according to claim 1, wherein in said S3, the towing speed, the water pump pressure and the position of the burying plow are all matched at a burying speed of 2 m/min.
5. The flush-buried submarine cable laying method according to claim 1, wherein in said S3, the berth is adjusted by retracting an anchor cable to control the berth and thereby control the laying deviation.
6. The flush-buried marine cable laying method according to claim 1, wherein in said S4, the burying plow recovery comprises the steps of:
s41, the embedding plough slowly builds a slope by adopting a traction steel cable and an embedding plough hoisting rigging to finish the embedding operation;
s42, hanging the embedded plough out of the water surface by a crane, and placing the embedded plough at the middle part of the stern by adjusting a traction steel cable and a lifting rigging;
s43, taking out the submarine cable from the cable trough of the embedded plough;
and S44, moving the embedded plough to the trolley bracket, and then realizing landing.
7. The flush-type submarine cable laying method according to claim 6, wherein in said S43, the submarine cable is taken out while maintaining a vertical angle between 25 degrees and 35 degrees with respect to the water intake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110863023.5A CN113644594A (en) | 2021-07-29 | 2021-07-29 | Flush buried submarine cable laying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110863023.5A CN113644594A (en) | 2021-07-29 | 2021-07-29 | Flush buried submarine cable laying method |
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| Publication Number | Publication Date |
|---|---|
| CN113644594A true CN113644594A (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110863023.5A Pending CN113644594A (en) | 2021-07-29 | 2021-07-29 | Flush buried submarine cable laying method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003225332A1 (en) * | 2002-05-10 | 2003-11-11 | Seabed Geosolutions B.V. | Method for deploying seafloor equipment |
| CN1521526A (en) * | 2003-01-27 | 2004-08-18 | 中英海底系统有限公司 | Method and system for realizing shallow sea optical cable burial utilizing shoal buried plow |
| CN102374338A (en) * | 2010-08-20 | 2012-03-14 | 中国海洋石油总公司 | Process for laying deepwater S-shaped submarine pipeline |
| CN103247977A (en) * | 2013-05-14 | 2013-08-14 | 国家电网公司 | Multiphase submarine cable transversal arrangement circularly laying construction method |
| CN107732798A (en) * | 2017-10-11 | 2018-02-23 | 中英海底系统有限公司 | 6 meters of sea ploughs |
| CN108233277A (en) * | 2018-02-09 | 2018-06-29 | 江苏海上龙源风力发电有限公司 | A kind of extra long distance shoal sea bed extra large cable laying technique |
-
2021
- 2021-07-29 CN CN202110863023.5A patent/CN113644594A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003225332A1 (en) * | 2002-05-10 | 2003-11-11 | Seabed Geosolutions B.V. | Method for deploying seafloor equipment |
| CN1521526A (en) * | 2003-01-27 | 2004-08-18 | 中英海底系统有限公司 | Method and system for realizing shallow sea optical cable burial utilizing shoal buried plow |
| CN102374338A (en) * | 2010-08-20 | 2012-03-14 | 中国海洋石油总公司 | Process for laying deepwater S-shaped submarine pipeline |
| CN103247977A (en) * | 2013-05-14 | 2013-08-14 | 国家电网公司 | Multiphase submarine cable transversal arrangement circularly laying construction method |
| CN107732798A (en) * | 2017-10-11 | 2018-02-23 | 中英海底系统有限公司 | 6 meters of sea ploughs |
| CN108233277A (en) * | 2018-02-09 | 2018-06-29 | 江苏海上龙源风力发电有限公司 | A kind of extra long distance shoal sea bed extra large cable laying technique |
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Application publication date: 20211112 |
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| RJ01 | Rejection of invention patent application after publication |