CN117673970A - Double-submarine cable different-ditch simultaneous laying process - Google Patents
Double-submarine cable different-ditch simultaneous laying process Download PDFInfo
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Abstract
The invention discloses a simultaneous laying process of double sea cables and different ditches, which comprises the following steps: step one, positioning; step two, preparing before sea cable laying: leading out two sea cables from concentric coaxial double-cable reels through back-twist frames respectively, then respectively passing through two cable distribution machines, then passing through water inlet grooves at the tail parts of ships, and finally respectively passing through two coulters of a double-coulter burying device; step three, lowering the double-coulter burying device: the hydraulic gantry crane is used for hoisting the double-coulter burying device into water, so that the double-coulter burying device sinks to the sea bed surface, the angles of coulters at two sides of the double-coulter burying device are adjusted and regulated, and the spray pump is started; step four, laying by ship: the submarine cable laying ship drags the double-coulter burying device to move forward along a set laying route, the double-cable type cable drum releases submarine cables, the double-coulter burying device works to form two furrows on the sea floor at the same time, and the two submarine cables are respectively tensioned through two cable laying machines and then buried in different furrows at the same time under the guidance of the double-coulter burying device.
Description
Technical Field
The invention relates to a simultaneous laying process for double sea cables and different ditches.
Background
At present, with the global control of greenhouse gases, offshore new energy continuously emerges, offshore wind power generation, floating photovoltaic power generation, oil-gas field platform development electricity utilization and the like are all needed to lay submarine cables on the sea floor, generally, the offshore new energy power generation output consists of two to three loops of main output submarine cables, the conventional submarine main output cable laying generally adopts single laying operation, the operation efficiency is low, the construction cost is increased, and the risk of cutting off submarine cables due to the fact that construction is interrupted can occur in the face of complicated and changeable sea conditions and long-distance output, so that good operation window periods are needed to be selected, and four window periods are needed for single laying operation, so that the construction period is longer, and therefore, in order to improve the main output submarine cable laying efficiency and reduce the construction cost, a new submarine cable laying process is needed to solve the current problem, and the later construction period of the whole offshore development project is promoted.
The traditional Chinese patent document with the patent number of 201610155305.9 discloses a double-cable same-ditch embedding process, which specifically comprises the following steps: step one, placing an initial anchor; step two, advancing; step three, lowering a buried plow; fourth, adjusting: the cable is hinged; step five, burying a single cable; step six, burying double cables; the two sea cables can be buried simultaneously by a single construction ship; however, the double-cable same-ditch burying technology is only suitable for communication sea cables with smaller diameters, most of the existing sea cables are large-diameter photoelectric composite sea cables with diameters of 150-400 mm, when two sea cables are buried in the same ditch, magnetic fields generated between the two sea cables can affect each other, so that the current-carrying capacity of the two sea cables is greatly reduced, and meanwhile, the service lives of the two sea cables are greatly shortened.
Therefore, the applicant improves the existing submarine cable laying process to reduce the construction cost and improve the efficiency of main output submarine cable laying.
Disclosure of Invention
In order to solve the existing technical problems, the invention provides a double-sea-cable different-ditch simultaneous laying process, which comprises the following steps:
step one, positioning: the laid submarine cable ship is positioned on the sea surface of a preset construction site through a satellite positioning system;
step two, preparing before sea cable laying: leading out two sea cables from concentric coaxial double-cable reels through back-twist frames respectively, then respectively passing through two cable distribution machines, then passing through water inlet grooves at the tail parts of ships, and finally respectively passing through two coulters of a double-coulter burying device;
step three, lowering the double-coulter burying device: after two sea cables respectively pass through two coulters of the double-coulter burying device, the double-coulter burying device is hung into water by using a hydraulic gantry crane, so that the double-coulter burying device is sunk to the sea bed surface, the hydraulic components of the double-coulter burying device are controlled to adjust the angles of the coulters at the two sides in a hull control room of a sea cable laying ship to adjust the burying depth of the sea cables, and then a jet pump is started;
step four, laying by ship: the cable laying ship moves forward along a set laying route, the cable laying ship moves forward to drag the double-coulter burying device to move forward, the double-cable-type cable drums on the cable laying ship synchronously release the sea cables, the double-coulter burying device synchronously operates, two sea ditches are formed on the sea floor at the same time, the two sea cables are respectively tensioned by the two cable laying machines and then fall into the two sea ditches to be buried under the guidance of the double-coulter burying device, and the simultaneous laying of the different sea cables is realized; according to the double-sea-cable different-ditch simultaneous laying process, two sea cables are synchronously released through the concentric coaxial double-cable trays, after the double-coulter burying device moves forwards along with the advance of a sea-cable laying ship, the double-coulter burying device synchronously works to form two sea ditches on the sea bottom simultaneously, the two sea cables are respectively tensioned through two cable laying machines and then fall into the two sea ditches and are buried under the guidance of the double-coulter burying device, and the two sea cables can be laid in different ditches only by adopting a single sea-cable laying ship. Compared with the existing double-cable same-ditch burying process, the double-sea cable different-ditch simultaneous laying process can effectively avoid the mutual influence of magnetic fields generated when two sea cables are buried in the same ditch, and ensures the current-carrying capacity and the service life of the two sea cables.
Further, the marine cable laying ship is provided with a concentric coaxial double-cable disc, a DP2 power positioning system, a back-twist frame, a cable laying machine, a water inlet groove at the tail part of the ship, a hydraulic door crane and a DGPS differential positioning system; the hydraulic gantry crane is connected with the double-coulter burying device, and the double-coulter burying device is electrically connected with the submarine cable laying ship; the two cable distribution machines are arranged; the DP2 dynamic positioning system is arranged on the submarine cable laying ship, so that the submarine cable laying ship is kept stable in water, and the target ship position and the ship direction are kept as far as possible; the marine cable laying ship is provided with a DGPS differential positioning system which is used for monitoring the advancing track of the ship at any time so as to keep the same direction with a set laying route; the cable laying ship is electrically connected with the double-coulter burying device, so that a worker can conveniently control the operation of the double-coulter burying device on the cable laying ship.
Furthermore, real-time monitoring is needed when the ship is laid in the fourth step; the real-time monitoring mode comprises the following steps: the DGPS differential positioning system is used for monitoring the advancing track of the ship and the set laying route to keep the same direction, and a worker can watch the submarine cable water inlet angle on duty to ensure the release of the submarine cable belt tension, and the worker can watch the posture and the embedded depth state of the embedded plow on duty to ensure that the submarine cable is embedded to meet the design requirement.
Further, the concentric coaxial double-cable tray comprises an inner-ring cable tray, an outer-ring cable tray, an inner-ring cable tray driving device and an outer-ring cable tray driving device; the outer ring cable drum is coaxially and rotatably arranged outside the inner ring cable drum, and two sea cables are respectively stored in the inner ring cable drum and the outer ring cable drum; the inner ring cable drum driving device and the outer ring cable drum driving device are respectively in transmission connection with the inner ring cable drum and the outer ring cable drum, and the hydraulic assembly drives the coulter to rotate to adjust the angle; the outer ring cable drum is coaxially and rotatably arranged at the outer side of the inner ring cable drum, the inner ring cable drum driving device and the outer ring cable drum driving device respectively drive the inner ring cable drum and the outer ring cable drum to rotate, the rotating speeds of the inner ring cable drum and the outer ring cable drum can be controlled to be different, and the cable output speeds of two sea cables can be controlled to be the same conveniently.
Further, when the double-cable type cable drums on the cable laying ship synchronously release the submarine cable, the cable speeds of the inner cable drum and the outer cable drum for releasing the submarine cable are the same.
Further, the cable speeds of the inner ring cable tray and the outer ring cable tray for releasing the submarine cables are equal to the burying speeds of the two submarine cables and the advancing speed of the submarine cable laying ship.
Further, the burying speed of the two submarine cables is inversely proportional to the burying depth of the submarine cables on the seabed and is directly proportional to whether the seabed is soft or not.
Furthermore, the burying speed of the two submarine cables is controlled to be 2-10 m/min.
Further, the double-coulter burying device comprises a frame, a spray pump, a coulter, a hydraulic component and a positioning module, wherein the spray pump, the coulter, the hydraulic component and the positioning module are arranged on the frame; the two coulters are respectively arranged at the left side and the right side of the frame; the four spraying pumps are respectively arranged on the frame above the two coulters in a pair-by-pair mode; one end of the hydraulic component is connected with the frame, and the other end of the hydraulic component is in transmission connection with the coulter; the hydraulic assembly, the positioning module and the jet pump are electrically connected with the cable laying ship; the hydraulic component, the positioning module, the spray pump and the two coulters are arranged on the double-coulter burying device, and are electrically connected with the cable laying ship, so that a worker can conveniently control the hydraulic component to adjust the angle of the coulters on the cable laying ship, start and close the spray pump, accurately control the position of the double-coulter burying device and ensure that the position of the double-coulter burying device is kept at a safe distance from the stern.
Further, the sea cable is a photoelectric composite sea cable, and the outermost layer of the photoelectric composite sea cable is a steel wire armor or a steel wire armor with asphalt covered on the outer surface of the steel wire.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the double-sea-cable different-ditch simultaneous laying process, two sea cables are synchronously released through the concentric coaxial double-cable trays, after the double-coulter burying device moves forwards along with the advance of a sea-cable laying ship, the double-coulter burying device synchronously works to form two sea ditches on the sea bottom simultaneously, the two sea cables are respectively tensioned through two cable laying machines and then fall into the two sea ditches and are buried under the guidance of the double-coulter burying device, and the two sea cables can be laid in different ditches only by adopting a single sea-cable laying ship. Compared with the existing double-cable same-ditch burying process, the double-sea cable different-ditch simultaneous laying process can effectively avoid the mutual influence of magnetic fields generated when two sea cables are buried in the same ditch, and ensures the current-carrying capacity and the service life of the two sea cables.
2. The DP2 dynamic positioning system is arranged on the submarine cable laying ship, so that the submarine cable laying ship is kept stable in water, and the target ship position and the ship direction are kept as far as possible; the marine cable laying ship is provided with a DGPS differential positioning system which is used for monitoring the advancing track of the ship at any time so as to keep the same direction with a set laying route; the cable laying ship is electrically connected with the double-coulter burying device, so that a worker can conveniently control the operation of the double-coulter burying device on the cable laying ship.
3. The outer ring cable drum is coaxially and rotatably arranged at the outer side of the inner ring cable drum, the inner ring cable drum driving device and the outer ring cable drum driving device respectively drive the inner ring cable drum and the outer ring cable drum to rotate, the rotating speeds of the inner ring cable drum and the outer ring cable drum can be controlled to be different, and the cable output speeds of two sea cables can be controlled to be the same conveniently.
4. The hydraulic component, the positioning module, the spray pump and the two coulters are arranged on the double-coulter burying device, and are electrically connected with the cable laying ship, so that a worker can conveniently control the hydraulic component to adjust the angle of the coulters on the cable laying ship, start and close the spray pump, accurately control the position of the double-coulter burying device and ensure that the position of the double-coulter burying device is kept at a safe distance from the stern.
5. The burying speed of the two submarine cables is controlled to be 2-10 m/min, so that the burying depth of the submarine cables is ensured to meet the design requirement of submarine cable burying.
Drawings
FIG. 1 is a schematic diagram of a submarine cable laying ship in place in a double submarine cable different-ditch simultaneous laying process according to the invention;
FIG. 2 is a schematic view of a double-sea cable simultaneous laying process in a state of using a hydraulic door crane to hoist a double-coulter burying device into water;
FIG. 3 is a schematic view showing a state of the double submarine cable laying process in the simultaneous laying process;
FIG. 4 is a schematic diagram of a top view of a concentric coaxial double-cable drum in a double-sea cable different-ditch simultaneous laying process according to the present invention;
the reference numerals are: the cable laying device comprises a concentric coaxial double-cable tray 1, an inner-ring cable tray 1-1, an outer-ring cable tray 1-2, a back-twist frame 2, a cable laying machine 3, a hydraulic door crane 4, a double-coulter burying device 5, a photoelectric composite sea cable 6 and a seabed mud surface 7.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in place when the inventive product is used, or those conventionally understood by those skilled in the art, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Example 1
Referring to fig. 1 to 4, a process for simultaneously laying double sea cables in different ditches comprises the following steps:
step one, positioning: the laid submarine cable ship is positioned on the sea surface of a preset construction site through a satellite positioning system;
step two, preparing before sea cable laying: two sea cables are led out from a concentric coaxial double-cable tray 1 through a back-twist frame 2 respectively, then pass through two cable laying machines 3 respectively, then pass through a water inlet groove at the tail part of a ship, and finally pass through two coulters of a double-coulter burying device 5 respectively;
step three, lowering the double-coulter burying device 5: after two sea cables respectively pass through two coulters of the double-coulter burying device 5, the double-coulter burying device 5 is hung into water by using a hydraulic door crane 4, and the two sea cables respectively pass through the two coulters of the double-coulter burying device 5, so that the two sea cables can be buried into the sea floor at the same time, the double-coulter burying device 5 is lowered to the sea floor, the angle of the two coulters is adjusted by controlling the hydraulic components of the double-coulter burying device 5 in a hull control room of a cable laying ship to adjust the burying depth of the sea cables, and then a jet pump is started;
step four, laying by ship: the submarine cable laying ship moves forward along the set laying route, and the ship advancing track is monitored at all times through a DGPS differential positioning system on the submarine cable laying ship, and the ship advancing track and the set laying route are kept in the same direction; the sea cable is laid by dragging the double-coulter burying device 5 forwards, the double-cable-type cable drums on the sea cable laying boat synchronously release sea cables, the inner-ring cable drum 1-1 and the outer-ring cable drum 1-2 are controlled to release the sea cables at the same linear speed, the double-coulter burying device 5 synchronously operates, the angles of the two coulters of the double-coulter burying device 5 are gradually adjusted to slowly build slopes and lay, two furrows are formed at the sea floor until the depth of the furrows reaches the sea cable laying depth, the two sea cables fall into the two furrows after being tensioned by the two cable laying machines 3 respectively, and are buried under the guidance of the double-coulter burying device 5, so that the simultaneous laying of the double sea cables is realized, during the period, operators are required to watch sea cable water-in angles on duty, the tension release of the sea cable belts is ensured, the buried plow posture and the buried depth state are monitored, and the sea cable laying is ensured to meet the design requirements; according to the double sea cable different-ditch simultaneous laying process, two sea cables are synchronously released through the concentric coaxial double-cable tray 1, after the double-coulter burying device 5 moves forwards along with the advance of a sea cable laying ship, the double-coulter burying device 5 is synchronously operated to form two sea ditches simultaneously on the sea floor, the two sea cables fall into the two sea ditches after being respectively tensioned through the two cable laying machines 3 and are buried under the guidance of the double-coulter burying device 5, and the two sea cables can be laid in different ditches only by a single sea cable laying ship. Compared with the existing double-cable same-ditch burying process, the double-sea cable different-ditch simultaneous laying process can effectively avoid the mutual influence of magnetic fields generated when two sea cables are buried in the same ditch, and ensures the current-carrying capacity and the service life of the two sea cables.
The marine cable laying ship is provided with a concentric coaxial double-cable-disc 1, a DP2 power positioning system, a back-twist frame 2, a cable laying machine 3, a water inlet groove at the tail part of the ship, a hydraulic door crane 4 and a DGPS differential positioning system; the hydraulic gantry crane 4 is connected with the double-coulter burying device 5, and the double-coulter burying device 5 is electrically connected with the cable laying ship; the two cable distribution machines 3 are arranged; the DP2 dynamic positioning system is arranged on the submarine cable laying ship, so that the submarine cable laying ship is kept stable in water, and the target ship position and the ship direction are kept as far as possible; the marine cable laying ship is provided with a DGPS differential positioning system, which is used for monitoring the advancing track of the ship at any time so as to keep the same direction with the set laying route; the cable laying ship is electrically connected with the double-coulter burying device 5, so that a worker can conveniently control the double-coulter burying device 5 to operate on the cable laying ship.
The marine cable laying ship is provided with a concentric coaxial double-cable-disc 1, a DP2 power positioning system, a back-twist frame 2, a cable laying machine 3, a water inlet groove at the tail part of the ship, a hydraulic door crane 4 and a DGPS differential positioning system; the hydraulic gantry crane 4 is connected with the double-coulter burying device 5, and the double-coulter burying device 5 is electrically connected with the cable laying ship; the two cable distribution machines 3 are arranged; the DP2 power positioning system is arranged on the submarine cable laying ship, and the DP2 power positioning system counteracts wind flow factors and the like borne by the submarine cable laying ship through the full-rotation rudder propeller, so that the submarine cable laying ship is kept stable in water, and a target ship position and a ship direction are kept as far as possible; the marine cable laying ship is provided with a DGPS differential positioning system, which is used for monitoring the advancing track of the ship at any time so as to keep the same direction with the set laying route; the cable laying ship is electrically connected with the double-coulter burying device 5, so that a worker can conveniently control the double-coulter burying device 5 to operate on the cable laying ship.
The linear speed of the inner ring cable drum 1-1 and the outer ring cable drum 1-2 for releasing the submarine cables is equal to the burying speed of the two submarine cables and the advancing speed of the submarine cable laying ship; the burying speed of the two submarine cables in the embodiment is inversely proportional to the burying depth of the submarine cables on the seabed and is directly proportional to whether the seabed is soft or not; the burying speed of the two submarine cables is controlled to be 2-10 m/min.
The double-coulter burying device 5 of the embodiment comprises a frame, a spray pump, a coulter, a hydraulic component and a positioning module, wherein the spray pump, the coulter, the hydraulic component and the positioning module are arranged on the frame; the two coulters are respectively arranged at the left side and the right side of the frame; the four spraying pumps are respectively arranged on the frame above the two coulters in a pair-by-pair mode; one end of the hydraulic component is connected with the frame, and the other end of the hydraulic component is in transmission connection with the coulter; the hydraulic assembly, the positioning module and the jet pump are electrically connected with the submarine cable laying ship. The hydraulic assembly, the positioning module, the spraying pump and the two coulters are arranged on the double-coulter burying device 5, the hydraulic assembly, the positioning module and the spraying pump are electrically connected with the cable laying ship, workers can conveniently control the hydraulic assembly on the cable laying ship to adjust the angle of the coulters, the spraying pump is started and closed, the position of the double-coulter burying device 5 is accurately controlled, and the position of the double-coulter burying device 5 is ensured to keep a safe distance from the stern.
The submarine cable of the embodiment adopts a photoelectric composite submarine cable 6, and the outermost layer of the photoelectric composite submarine cable 6 adopts steel wire armor or steel wire armor with asphalt covered on the outer surface of the steel wire.
In the fourth step of this embodiment, the water inlet angle of the submarine cable is related to the sea water depth and the laying speed, and the relationship between the water inlet angle of the submarine cable and the sea water depth is shown in the following table:
| depth of water (m) | Entry angle (degree) | Laying speed (m/min) |
| 5～10 | 27～47 | 0～9 |
| 10～20 | 47～67 | 0～9 |
| 20～30 | 67～76 | 0～9 |
| 30～40 | 76～80 | 0～9 |
| 40～45 | 80～82 | 0～9 |
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Claims (10)
1. The double-sea-cable different-ditch simultaneous laying process is characterized by comprising the following steps of:
step one, positioning: the laid submarine cable ship is positioned on the sea surface of a preset construction site through a satellite positioning system;
step two, preparing before sea cable laying: leading out two sea cables from concentric coaxial double-cable reels through back-twist frames respectively, then respectively passing through two cable distribution machines, then passing through water inlet grooves at the tail parts of ships, and finally respectively passing through two coulters of a double-coulter burying device;
step three, lowering the double-coulter burying device: after two sea cables respectively pass through two coulters of the double-coulter burying device, the double-coulter burying device is hung into water by using a hydraulic gantry crane, so that the double-coulter burying device is sunk to the sea bed surface, the hydraulic components of the double-coulter burying device are controlled to adjust the angles of the coulters at the two sides in a hull control room of a sea cable laying ship to adjust the burying depth of the sea cables, and then a jet pump is started;
step four, laying by ship: the submarine cable laying ship moves forward along a set laying route, the submarine cable laying ship moves forward to drag the double-coulter burying device to move forward, the double-cable-type cable discs on the submarine cable laying ship synchronously release submarine cables, the double-coulter burying device synchronously operates, two furrows are formed on the sea floor simultaneously, the two submarine cables fall into the two furrows after being tensioned through the two cable laying machines respectively, and the double-submarine cable different furrows are laid simultaneously under the guidance of the double-coulter burying device.
2. The process for simultaneously laying the double sea cables in different ditches according to claim 1, wherein the laying sea cable boat is provided with a concentric coaxial double cable tray, a DP2 dynamic positioning system, a back-twist rack, a cable laying machine, a water inlet tank at the tail part of the boat, a hydraulic gantry crane and a DGPS differential positioning system; the hydraulic gantry crane is connected with the double-coulter burying device, and the double-coulter burying device is electrically connected with the submarine cable laying ship; the two cable distribution machines are arranged.
3. The process for simultaneously laying the double sea cables and different ditches according to claim 2, wherein the ship is laid in the fourth step in real time; the real-time monitoring mode comprises the following steps: the DGPS differential positioning system is used for monitoring the advancing track of the ship and the set laying route to keep the same direction, and a worker can watch the submarine cable water inlet angle on duty to ensure the release of the submarine cable belt tension, and the worker can watch the posture and the embedded depth state of the embedded plow on duty to ensure that the submarine cable is embedded to meet the design requirement.
4. The double sea cable different ditch simultaneous laying process according to claim 1, wherein the concentric coaxial double cable trays comprise an inner cable tray, an outer cable tray, an inner cable tray driving device and an outer cable tray driving device; the outer ring cable drum is coaxially and rotatably arranged outside the inner ring cable drum, and two sea cables are respectively stored in the inner ring cable drum and the outer ring cable drum; the inner ring cable drum driving device and the outer ring cable drum driving device are respectively in transmission connection with the inner ring cable drum and the outer ring cable drum.
5. The simultaneous dual-sea-cable different-ditch laying process according to claim 4, wherein when the dual-cable-type cable drums on the marine cable laying ship in the fourth step synchronously release the marine cables, the line speeds of the inner-cable drum and the outer-cable drum for releasing the marine cables are the same.
6. The process for simultaneously laying the double sea cables in different ditches according to claim 5, wherein the linear speed of releasing the sea cables by the inner ring cable drum and the outer ring cable drum is equal to the burying speed of the two sea cables and the advancing speed of a sea cable laying ship.
7. The simultaneous dual submarine cable differential trench laying process according to claim 6, wherein the speed of the two submarine cables is inversely proportional to the depth of the submarine cable buried in the sea floor, and directly proportional to whether the sea floor is soft or not.
8. The simultaneous laying process of double sea cables according to claim 6, wherein the burying speed of the two sea cables is controlled to be 2-10 m/min.
9. The process for simultaneously laying the double sea cables in different ditches according to claim 1, wherein the double coulter burying device comprises a frame, and a jet pump, a coulter, a hydraulic assembly and a positioning module which are arranged on the frame; the two coulters are respectively arranged at the left side and the right side of the frame; the four spraying pumps are respectively arranged on the frame above the two coulters in a pair-by-pair mode; one end of the hydraulic component is connected with the frame, the other end of the hydraulic component is in transmission connection with the coulter, and the hydraulic component drives the coulter to rotate to adjust the angle; the hydraulic assembly, the positioning module and the jet pump are electrically connected with the submarine cable laying ship.
10. The process for simultaneously laying the double sea cables and different ditches according to claim 1, wherein the sea cable is a photoelectric composite sea cable, and the outermost layer of the photoelectric composite sea cable is a steel wire armor or a steel wire armor with asphalt covered on the outer surface of the steel wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311684191.3A CN117673970A (en) | 2023-12-11 | 2023-12-11 | Double-submarine cable different-ditch simultaneous laying process |
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| CN202311684191.3A CN117673970A (en) | 2023-12-11 | 2023-12-11 | Double-submarine cable different-ditch simultaneous laying process |
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| CN202311684191.3A Pending CN117673970A (en) | 2023-12-11 | 2023-12-11 | Double-submarine cable different-ditch simultaneous laying process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117673970A (en) |
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2023
- 2023-12-11 CN CN202311684191.3A patent/CN117673970A/en active Pending
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