CN111564810A - Laying process of marine interlocking row - Google Patents
Laying process of marine interlocking row Download PDFInfo
- Publication number
- CN111564810A CN111564810A CN202010255160.6A CN202010255160A CN111564810A CN 111564810 A CN111564810 A CN 111564810A CN 202010255160 A CN202010255160 A CN 202010255160A CN 111564810 A CN111564810 A CN 111564810A
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- China
- Prior art keywords
- laying
- interlocking
- positioning
- row
- interlocking row
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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
- 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
-
- 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
- H02G1/081—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 using pulling means at cable ends, e.g. pulling eyes or anchors
Abstract
The invention provides a laying process of an offshore interlocking row, wherein positioning personnel determine an interlocking row laying initial point tug to assist a laying vessel in moving the vessel to a proper position and assist in anchoring; accurately positioning the pipeline treatment position by using an USBL (ultra short base line) underwater positioning system, monitoring the laying process in real time, lifting and releasing an interlocking row, simultaneously starting a main winch and an auxiliary winch to release an interlocking row block, and using various detection means such as a 3D (three-dimensional) real-time detection and scanning sonar and multi-beam scanning; has the advantages that: the invention has high working efficiency and low construction cost; the investment on equipment is less, and the maintenance is convenient; the underwater workload is reduced, and the diving risk is reduced; the influence of ocean current is small, and the construction time is not limited.
Description
Technical Field
The invention relates to the field of submarine pipeline suspension protection, in particular to a laying process of an offshore interlocking row.
Background
The traditional marine laying mode is that a large-scale floating crane ship is used for directly hoisting a row body to a position to be treated, and a diver is launched to centralize and release a lifting hook. The paving mode has the following defects or shortcomings: the intervention use of a large floating crane ship increases the construction cost; secondly, more diving personnel are needed, and the construction cost is increased; thirdly, the underwater operation of the diving operation receives the influence of ocean current, so the construction period is longer; the diver has difficulty and potential danger in righting the raft body underwater; fifthly, the row body needs to be lapped for at least 2 meters each time, which causes material waste to a certain extent.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a laying process of an offshore interlocking row.
The new technical scheme of the invention is as follows: a laying process of an offshore interlocking row is as follows:
1) according to design requirements and coordinates provided by an owner, positioning personnel determine an interlocking row laying starting point;
2) the tugboat assists the spread ship to move to a proper position, so that the tugboat is perpendicular to the submarine cable to be spread, and the anchor throwing boat is arranged to assist the sea vessel 6 to throw the anchor; after the positioning is finished, the 3D real-time side-scan sonar is used for monitoring the seabed surface in a laying range in real time, and divers are arranged to clear large stones, obstacles and the like at fixed points;
3) the laying ship adjusts the ship position through the hinged anchor, ensures that the center of the laying device is flush with the pipeline to be treated, and completes the pipe riding positioning of the ship;
4) the USBL ultra-short baseline underwater positioning system is used for accurately positioning the treatment position of the pipeline:
carrying the USBL (ultra short base line) underwater positioning system by a diver, comparing design requirements with the coordinates of positioning personnel, dotting the treatment initial coordinate of the submarine cable, and accurately dotting the treatment initial coordinate at intervals of 5 meters along the direction of the submarine cable treatment route, wherein the positioning precision requirement error is less than 15 cm;
5) real-time monitoring of the laying process:
after the interlocking row is in place, using K60 satellite station differential positioning equipment to monitor that the interlocking row laying route is consistent with the ultra-short baseline underwater positioning coordinate in real time, and performing positioning and rechecking once every 5 m to ensure that the interlocking row does not deviate in the laying process and improve the laying precision; meanwhile, in the laying process, 3D real-time detection and scanning sonar is used for monitoring the underwater laying state of the interlocking row in real time, so that the interlocking row is prevented from being overlapped on the seabed;
6) hoisting the interlocking row:
arranging the interlocking arrangement on a release interlocking row movable inclined plate by adopting a marine crane, and binding two rows of cement blocks and between the cement blocks and geotextile by using a polyester rope with the diameter of 12mm, wherein the specific binding part is between a cement block connecting rope and a reinforced belt;
7) a professional simultaneously starts the main winch and the auxiliary winch to release the interlocking blocks, the interlocking blocks on the movable inclined plate slide downwards under the action of self weight, the main winch needs to run at a low speed, the impulse generated by the sliding downwards is reduced, the braking and the parking are convenient, and the 2 auxiliary winches stop running after the inclined plate reaches a working position;
8) the laying ship realizes the purpose of ship laying by simultaneously collecting and releasing a plurality of positioning anchor machines;
9) in normal laying operation, the speed of the main winch of the geotextile and the anchor mooring speed of the working ship are synchronously released, so that the interlocking rows are prevented from being overlapped on the seabed;
10) if wind shielding is needed or materials need to be prepared again as much as possible, the last row of interlocking rows are released to the sea bottom, after the geotextile is loosened, a diver cuts the geotextile at the laying end underwater and records the coordinates of the laying position by using differential positioning, and the length of the geotextile lapped at the butt joint position is not less than 2 meters during the next construction;
11) after the whole laying construction is finished, the interlocking row laying is subjected to quality inspection by using various detection means such as a 3D real-time detection and scanning sonar and a multi-beam scanning.
The invention has the beneficial effects that: the invention has high working efficiency and low construction cost; the investment on equipment is less, and the maintenance is convenient; the underwater workload is reduced, and the diving risk is reduced; the influence of ocean current is small, and the construction time is not limited.
Drawings
FIG. 1 is a schematic view of the USBL underwater positioning and arranging ship of the present invention in place.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
A laying process of an offshore interlocking row is as follows:
1) according to design requirements and coordinates provided by an owner, positioning personnel determine an interlocking row laying starting point;
2) the tugboat assists the spread ship to move to a proper position, so that the tugboat is perpendicular to the submarine cable to be spread, and the anchor throwing boat is arranged to assist the sea vessel 6 to throw the anchor; after the positioning is finished, the 3D real-time side-scan sonar is used for monitoring the seabed surface in a laying range in real time, and divers are arranged to clear large stones, obstacles and the like at fixed points;
3) the laying ship adjusts the ship position through the hinged anchor, ensures that the center of the laying device is flush with the pipeline to be treated, and completes the pipe riding positioning of the ship;
4) the USBL ultra-short baseline underwater positioning system is used for accurately positioning the treatment position of the pipeline:
carrying the USBL (ultra short base line) underwater positioning system by a diver, comparing design requirements with the coordinates of positioning personnel, dotting the treatment initial coordinate of the submarine cable, and accurately dotting the treatment initial coordinate at intervals of 5 meters along the direction of the submarine cable treatment route, wherein the positioning precision requirement error is less than 15 cm;
5) real-time monitoring of the laying process:
after the interlocking row is in place, using K60 satellite station differential positioning equipment to monitor that the interlocking row laying route is consistent with the ultra-short baseline underwater positioning coordinate in real time, and performing positioning and rechecking once every 5 m to ensure that the interlocking row does not deviate in the laying process and improve the laying precision; meanwhile, in the laying process, 3D real-time detection and scanning sonar is used for monitoring the underwater laying state of the interlocking row in real time, so that the interlocking row is prevented from being overlapped on the seabed;
6) hoisting the interlocking row:
arranging the interlocking arrangement on a release interlocking row movable inclined plate by adopting a marine crane, and binding two rows of cement blocks and between the cement blocks and geotextile by using a polyester rope with the diameter of 12mm, wherein the specific binding part is between a cement block connecting rope and a reinforced belt;
7) a professional simultaneously starts the main winch and the auxiliary winch to release the interlocking blocks, the interlocking blocks on the movable inclined plate slide downwards under the action of self weight, the main winch needs to run at a low speed, the impulse generated by the sliding downwards is reduced, the braking and the parking are convenient, and the 2 auxiliary winches stop running after the inclined plate reaches a working position;
8) the laying ship realizes the purpose of ship laying by simultaneously collecting and releasing a plurality of positioning anchor machines;
9) in normal laying operation, the speed of the main winch of the geotextile and the anchor mooring speed of the working ship are synchronously released, so that the interlocking rows are prevented from being overlapped on the seabed;
10) if wind shielding is needed or materials need to be prepared again as much as possible, the last row of interlocking rows are released to the sea bottom, after the geotextile is loosened, a diver cuts the geotextile at the laying end underwater and records the coordinates of the laying position by using differential positioning, and the length of the geotextile lapped at the butt joint position is not less than 2 meters during the next construction;
11) after the whole laying construction is finished, the interlocking row laying is subjected to quality inspection by using various detection means such as a 3D real-time detection and scanning sonar and a multi-beam scanning.
Before construction: accurately positioning the pipeline treatment position by using the USBL (ultra short base line) underwater positioning system, accurately positioning every five meters underwater, checking the submarine cable routing track, and ensuring the laying accuracy of the chain rows;
during construction: using K60 satellite station differential positioning equipment to monitor that the laid route of the chain row is consistent with the underwater positioning coordinate of the ultra-short baseline in real time, and ensuring that the route of the chain row does not deviate in the laying process;
after construction: using a plurality of detection means such as a 3D real-time scan sonar and a multi-beam scan to carry out quality inspection on the linkage row laying;
discontinuous construction: if the offshore construction is influenced by factors such as adverse weather, the last row of chain rows are released to the seabed, the geotextile is cut off and the coordinates of the laying position are recorded after the geotextile is loosened, and the length of the geotextile lapped at the butt joint position is not less than 2 meters during the next construction.
Claims (1)
1. The laying process of the marine interlocking row is characterized by comprising the following steps:
the interlocking row laying process comprises the following steps:
1) according to design requirements and coordinates provided by an owner, positioning personnel determine an interlocking row laying starting point;
2) the tugboat assists the spread ship to move to a proper position, so that the tugboat is perpendicular to the submarine cable to be spread, and the anchor throwing boat is arranged to assist the sea vessel 6 to throw the anchor; after the positioning is finished, the 3D real-time side-scan sonar is used for monitoring the seabed surface in a laying range in real time, and divers are arranged to clear large stones, obstacles and the like at fixed points;
3) the laying ship adjusts the ship position through the hinged anchor, ensures that the center of the laying device is flush with the pipeline to be treated, and completes the pipe riding positioning of the ship;
4) the USBL ultra-short baseline underwater positioning system is used for accurately positioning the treatment position of the pipeline:
carrying the USBL (ultra short base line) underwater positioning system by a diver, comparing design requirements with the coordinates of positioning personnel, dotting the treatment initial coordinate of the submarine cable, and accurately dotting the treatment initial coordinate at intervals of 5 meters along the direction of the submarine cable treatment route, wherein the positioning precision requirement error is less than 15 cm;
5) real-time monitoring of the laying process:
after the interlocking row is in place, using K60 satellite station differential positioning equipment to monitor that the interlocking row laying route is consistent with the ultra-short baseline underwater positioning coordinate in real time, and performing positioning and rechecking once every 5 m to ensure that the interlocking row does not deviate in the laying process and improve the laying precision; meanwhile, in the laying process, 3D real-time detection and scanning sonar is used for monitoring the underwater laying state of the interlocking row in real time, so that the interlocking row is prevented from being overlapped on the seabed;
hoisting the interlocking row:
arranging the interlocking arrangement on a release interlocking row movable inclined plate by adopting a marine crane, and binding two rows of cement blocks and between the cement blocks and geotextile by using a polyester rope with the diameter of 12mm, wherein the specific binding part is between a cement block connecting rope and a reinforced belt;
7) a professional simultaneously starts the main winch and the auxiliary winch to release the interlocking blocks, the interlocking blocks on the movable inclined plate slide downwards under the action of self weight, the main winch needs to run at a low speed, the impulse generated by the sliding downwards is reduced, the braking and the parking are convenient, and the 2 auxiliary winches stop running after the inclined plate reaches a working position;
8) the laying ship realizes the purpose of ship laying by simultaneously collecting and releasing a plurality of positioning anchor machines;
9) in normal laying operation, the speed of the main winch of the geotextile and the anchor mooring speed of the working ship are synchronously released, so that the interlocking rows are prevented from being overlapped on the seabed;
10) if wind shielding is needed or materials need to be prepared again as much as possible, the last row of interlocking rows are released to the sea bottom, after the geotextile is loosened, a diver cuts the geotextile at the laying end underwater and records the coordinates of the laying position by using differential positioning, and the length of the geotextile lapped at the butt joint position is not less than 2 meters during the next construction;
11) after the whole laying construction is finished, the interlocking row laying is subjected to quality inspection by using various detection means such as a 3D real-time detection and scanning sonar and a multi-beam scanning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255160.6A CN111564810A (en) | 2020-04-02 | 2020-04-02 | Laying process of marine interlocking row |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255160.6A CN111564810A (en) | 2020-04-02 | 2020-04-02 | Laying process of marine interlocking row |
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| CN111564810A true CN111564810A (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010255160.6A Pending CN111564810A (en) | 2020-04-02 | 2020-04-02 | Laying process of marine interlocking row |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018665A (en) * | 2020-09-10 | 2020-12-01 | 中英海底系统有限公司 | Ultra-shallow water multi-ship combined submarine cable construction positioning method |
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| CN102758419A (en) * | 2012-07-31 | 2012-10-31 | 长江南京航道工程局 | Method for deep-water interlocking row laying construction based on movable reinforced bars |
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2020
- 2020-04-02 CN CN202010255160.6A patent/CN111564810A/en active Pending
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| CN103590366A (en) * | 2013-10-16 | 2014-02-19 | 长江南京航道工程局 | Contraction preventing system for interlocking blocks |
| JP2015071940A (en) * | 2014-12-10 | 2015-04-16 | 株式会社大宇宙産業 | Footed reinforcement plate, paving structure, and paving method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018665A (en) * | 2020-09-10 | 2020-12-01 | 中英海底系统有限公司 | Ultra-shallow water multi-ship combined submarine cable construction positioning method |
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Application publication date: 20200821 |