CN117477445A - Submarine cable crossing ultra-long shoal laying construction method and system - Google Patents
Submarine cable crossing ultra-long shoal laying construction method and system Download PDFInfo
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- CN117477445A CN117477445A CN202311378354.5A CN202311378354A CN117477445A CN 117477445 A CN117477445 A CN 117477445A CN 202311378354 A CN202311378354 A CN 202311378354A CN 117477445 A CN117477445 A CN 117477445A
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000004873 anchoring Methods 0.000 claims abstract description 6
- 238000007667 floating Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000012876 topography Methods 0.000 claims description 6
- 238000010408 sweeping Methods 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000009412 basement excavation Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention belongs to the technical field of submarine cable laying, and provides a submarine cable crossing ultra-long shoal laying construction method and a submarine cable crossing ultra-long shoal laying construction system, wherein the technical scheme is as follows: starting the submarine cable laying ship, and after the submarine cable laying ship reaches a planned position, towing the submarine cable by means of a winch on the basis of a towing platform and a buoy until the submarine cable is towed to a landing point directional drilling position; after the submarine cable is pulled in place, the cable buoy in the pre-excavated river channel is removed, the submarine cable is piled at the inflection point to serve as a turning point to fix the submarine cable and cannot shift, the submarine cable at the pre-excavated river channel is dug and buried by adopting a waterway amphibious ditcher, the bare submarine cable at the non-dug position of the near-shore section is dug and buried after the submarine cable is dug and buried, and the submarine cable is completely buried in the ditch to serve as landing point submarine cable anchoring. The implementation of the sea cable crossing ultra-long shoal laying is completed, the process is simple to operate, and the time consumption is short; solves the problem that the shoal exposed beach cannot float and drag, avoids the sea cable from dragging on the seabed, and greatly reduces the abrasion of the sea cable.
Description
Technical Field
The invention belongs to the technical field of submarine cable laying, and particularly relates to a submarine cable crossing ultra-long shoal laying construction method and system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The current sea new energy project sea cable landing section has larger length difference, most landing sections have larger length difference, most landing sections only have hundreds of meters, while some engineering landing sections have about ten kilometers, long-distance sea cable landing becomes a key process for sea new energy project construction, and landing section construction becomes a key and difficult point for sea cable laying.
Because the ultra-long shoal area relates to the conversion of various construction modes, shallow-draft submarine cable laying ships are difficult to enter, the long-distance shoal landing is less in research, the risk is higher, and the construction difficulty is high.
The part of the routing part of the shoal still exposes the beach during high tide level, and the conventional submarine cable laying construction method cannot be implemented.
Disclosure of Invention
In order to solve at least one technical problem in the background art, the invention provides a submarine cable crossing ultra-long shoal laying construction method and a submarine cable crossing ultra-long shoal laying construction system, wherein a method of floating and dragging along a submarine cable routing excavation channel is adopted, and the submarine cable crossing ultra-long shoal laying implementation is completed by means of dragging of a winch and an amphibious trencher, so that the process is simple to operate and the time consumption is short; the invention solves the problem that the shoal can not be towed in a floating way, avoids the submarine cable from towing on the seabed, and greatly reduces the abrasion of the submarine cable.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the first aspect of the invention provides a submarine cable crossing ultra-long shoal laying construction method, which comprises the following steps of;
arranging a traction platform and a winch;
acquiring land main cable routing coordinates, and pre-digging a river channel according to the main cable routing coordinates;
setting a buoy in a pre-excavated river channel;
starting the submarine cable laying ship, and after the submarine cable laying ship reaches a planned position, towing the submarine cable by means of a winch on the basis of a towing platform and a buoy until the submarine cable is towed to a landing point directional drilling position;
after the submarine cable is pulled in place, the cable buoy in the pre-excavated river channel is removed, the submarine cable is piled at the inflection point to serve as a turning point to fix the submarine cable and cannot shift, the submarine cable at the pre-excavated river channel is dug and buried by adopting a waterway amphibious ditcher, the bare submarine cable at the non-dug position of the near-shore section is dug and buried after the submarine cable is dug and buried, and the submarine cable is completely buried in the ditch to serve as landing point submarine cable anchoring.
Further, acquiring coastal main cable routing coordinates, and before pre-excavating the channel according to the coastal main cable routing coordinates, comprising: and measuring underwater topography geological survey of the routing area, carrying out sea sweeping operation, loading sea cables on a ship, carrying out dish distribution and transportation, setting a beach in place of the sea cable laying ship and setting a corner device of a shoal area.
Further, the arranging the towing platform and the winch comprises: a winch is placed at the first dam position of the land main cable routing extension line, a ground anchor is arranged at the back of the winch, and the ground anchor is provided with an anchor cable and is connected to the winch through the anchor cable for dragging a submarine cable.
Further, the pre-digging the channel according to the routing coordinates of the main cable comprises:
based on the main cable route coordinates, the bamboo poles are used for making in-place records, the amphibious ditcher is used for pre-digging the V-shaped river channel, limiting piles are inserted every one meter after ditching, and the landing points are constructed by adopting directional rotation at sea walls.
Further, set up cursory in the pre-excavation river course, include: and starting a cable laying machine to lay cables by adopting a submarine cable laying ship, and binding foam floating balls on a stern deck according to a preset distance.
Further, based on pull platform and cursory, carry out the cursory sea cable of drawing with the help of the winch, until drawing to landing point directional drilling position includes:
the traction steel wire is towed to the stern water inlet groove along a submarine cable route by the submarine cable laying ship to be connected with the submarine cable, and the traction steel wire is towed to the stern by a traction landing point to be connected with the submarine cable, so that a well-arranged traction device is arranged along the route;
the waterway amphibious trencher auxiliary winch pulls the submarine cable, the landing point winch slowly recovers the traction steel wire and the waterway amphibious trencher auxiliary winch pulls the submarine cable;
and (3) dragging the submarine cable terminal to reach the cable guiding bridge, and assisting in traction by a trencher to ensure that the submarine cable is smoothly fed to the cable guiding bridge, wherein the cable guiding bridge is adopted from the tail end of a channel to a first dam of a landing point and a directional drilling position.
A second aspect of the present invention provides a submarine cable traversing ultra-long shoal laying construction system comprising:
a towing platform arrangement module for arranging a towing platform and a winch;
the buoy setting module is used for acquiring land main cable routing coordinates and pre-digging a river channel according to the main cable routing coordinates; setting a buoy in a pre-excavated river channel;
the floating and towing module is used for starting the submarine cable laying ship, and after the submarine cable laying ship reaches a planned position, floating and towing the submarine cable by means of a winch based on a towing platform and a buoy until the submarine cable laying ship is towed to a landing point directional drilling position;
the submarine cable burying module is used for pulling the submarine cable in place, then removing the cable buoy in the pre-excavated river course, piling at the inflection point to fix the submarine cable as a turning point and enabling the submarine cable not to shift, ditching and burying the submarine cable at the pre-excavated river course by adopting a waterway amphibious ditcher, ditching and burying the bare submarine cable at the non-ditched position of the offshore section, and completing the full ditching and landfill of the submarine cable to be used as a landing point submarine cable anchoring.
Further, the system also comprises a construction equipment module, wherein the construction equipment module is used for carrying out underwater topography geological survey measurement of the routing area and carrying out sea sweeping operation, loading and distributing the sea cable, carrying out disc transportation, setting the sea cable laying ship in place on the beach and setting the corner device in the shoal area.
Further, in the floating and towing module, the towing and towing the submarine cable by means of the winch based on the towing platform and the buoy until the submarine cable is towed to the landing point directional drilling position comprises:
the traction steel wire is towed to the stern water inlet groove along a submarine cable route by the submarine cable laying ship to be connected with the submarine cable, and the traction steel wire is towed to the stern by a traction landing point to be connected with the submarine cable, so that a well-arranged traction device is arranged along the route;
the waterway amphibious trencher auxiliary winch pulls the submarine cable, the landing point winch slowly recovers the traction steel wire and the waterway amphibious trencher auxiliary winch pulls the submarine cable;
and (3) dragging the submarine cable terminal to reach the cable guiding bridge, and assisting in traction by a trencher to ensure that the submarine cable is smoothly fed to the cable guiding bridge, wherein the cable guiding bridge is adopted from the tail end of a channel to a first dam of a landing point and a directional drilling position.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts a method of floating and dragging along the cable route excavation channel, and finishes the implementation of the cable crossing over the ultra-long shoal laying by means of the traction of the winch and the amphibious ditcher, and has simple process, simple operation and short time consumption; the invention solves the problem that the shoal can not be towed in a floating way, avoids the submarine cable from towing on the seabed, and greatly reduces the abrasion of the submarine cable.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a flow chart of a method for implementing the sea cable crossing ultra-long shoal laying provided by the embodiment of the invention;
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Example 1
Referring to fig. 1, the embodiment provides a method for laying and constructing a sea cable passing through an ultra-long shoal, which comprises the following steps:
step 1: preparation work before construction: survey and measurement of underwater topography and geology of a routing area are carried out, sea cable loading, distribution and transportation are carried out, a sea cable laying ship sits on a beach, and a corner device of a shoal area is arranged.
Step 2: drag platform and winch arrangement: placing a winch at the first dam position of the land main cable routing extension line, and arranging a ground anchor at the back of the winch, wherein the ground anchor rigging is connected to the winch and used for pulling the whole multi-distance sea cable;
step 3: pre-digging a river channel: measuring a main cable route coordinate by a positioning person at a landing point, making a record by using a bamboo pole in place, arranging an amphibious ditcher to pre-dig a long V-shaped river channel, inserting limiting piles every one meter after ditching, and constructing the landing point by adopting directional rotation at a sea wall;
in this embodiment, the length of the V-shaped river channel is about 62.5% of the total shoal length, the width is 8 m, and the depth is 2 m, and in other embodiments, the V-shaped river channel can be adjusted according to practical conditions.
Step 4: arranging a cable guiding bridge frame: the section from the tail end of the channel to the first dam of the landing point and the position of the directional drill adopts a cable guiding bridge;
in this embodiment, the total length of the cable bridge accounts for about 6.25% of the total shoal length; in other embodiments, the adjustment may be made according to the actual situation.
Step 5: binding a foam floating ball: the marine cable laying ship starts a cable laying machine to lay cables, constructors bind foam floating balls on a stern deck according to a preset distance, and the preset distance can be 1 m every other in the embodiment.
Step 6: traction wire rope connection: after the submarine cable laying ship reaches a planned position, adjusting a proper angle, and paying out the rest submarine cable, dragging the steel wire rope to the stern water inlet groove through a motorized boat along a submarine cable route to be connected with the submarine cable laying ship; 2 small tugs are arranged to drag the landing point to drag the steel wires until the stern, and the dragging device is connected with the submarine cable and arranged along the submarine cable route.
Step 7: the auxiliary winch of the amphibious ditch excavator pulls the submarine cable: setting a waterway amphibious trencher auxiliary pulling and detection auxiliary to ensure that submarine cable pulling is normal every N meters; the landing point winch slowly recovers the steel wire rope, and the waterway amphibious trencher assists in dragging the submarine cable, so that the submarine cable water depth is ensured to meet the requirement of floating and dragging, and the towing is facilitated; and the auxiliary traction of the cable guiding bridge frame trencher is achieved by dragging the cable terminal to ensure the cable guiding bridge frame to be smoothly lifted.
In this embodiment, N may be set to 1000 meters.
Step 8: submarine cable dragging monitoring and submarine cable reservation: and monitoring the condition of the submarine cable in the cable guiding bridge in the whole process until the submarine cable is pulled to the landing point directional drill position, and reserving the submarine cable which is pulled to the landing point directional drill position and passes through the dam distance.
Step 9: floating and towing and dismantling and submarine cable burying: after the submarine cable is pulled in place, the cable in the pre-excavated river channel floats and is loosened, the submarine cable is piled at the inflection point to be fixed and cannot be shifted, the submarine cable at the guide cable channel and the submarine cable at the pre-excavated river channel is dug and buried by adopting a waterway amphibious ditcher, the exposed submarine cable at the non-dug position of the offshore section is dug and buried after being dug by adopting the amphibious ditcher or a small-sized spraying plow, and the submarine cable is completely buried in the ditch to be anchored at the landing point.
In this embodiment, the number of piles is 3 to 7, and in other embodiments, the number of piles may be adjusted according to practical situations.
According to the scheme, the method of floating and dragging along the submarine cable routing excavation channel is adopted, and the winch and the amphibious ditcher are used for dragging, so that the implementation of the submarine cable crossing ultra-long shoal laying is completed, the process is simple to operate, and the time consumption is short; the invention solves the problem that the shoal can not be towed in a floating way, avoids the submarine cable from towing on the seabed, and greatly reduces the abrasion of the submarine cable.
Example two
Based on the same inventive concept, there is also provided a submarine cable crossing ultra-long shoal laying construction system, comprising:
a towing platform arrangement module for arranging a towing platform and a winch;
the buoy setting module is used for acquiring land main cable routing coordinates and pre-digging a river channel according to the main cable routing coordinates; setting a buoy in a pre-excavated river channel;
the floating and towing module is used for starting the submarine cable laying ship, and after the submarine cable laying ship reaches a planned position, floating and towing the submarine cable by means of a winch based on a towing platform and a buoy until the submarine cable laying ship is towed to a landing point directional drilling position;
the submarine cable burying module is used for pulling the submarine cable in place, then removing the cable buoy in the pre-excavated river course, piling at the inflection point to fix the submarine cable as a turning point and enabling the submarine cable not to shift, ditching and burying the submarine cable at the pre-excavated river course by adopting a waterway amphibious ditcher, ditching and burying the bare submarine cable at the non-ditched position of the offshore section, and completing the full ditching and landfill of the submarine cable to be used as a landing point submarine cable anchoring.
Further, the system also comprises a construction equipment module, wherein the construction equipment module is used for carrying out underwater topography geological survey measurement of the routing area and carrying out sea sweeping operation, loading and distributing the sea cable, carrying out disc transportation, setting the sea cable laying ship in place on the beach and setting the corner device in the shoal area.
Further, in the floating and towing module, the towing and towing the submarine cable by means of the winch based on the towing platform and the buoy until the submarine cable is towed to the landing point directional drilling position comprises:
the traction steel wire is towed to the stern water inlet groove along a submarine cable route by the submarine cable laying ship to be connected with the submarine cable, and the traction steel wire is towed to the stern by a traction landing point to be connected with the submarine cable, so that a well-arranged traction device is arranged along the route;
the waterway amphibious trencher auxiliary winch pulls the submarine cable, the landing point winch slowly recovers the traction steel wire and the waterway amphibious trencher auxiliary winch pulls the submarine cable;
and (3) dragging the submarine cable terminal to reach the cable guiding bridge, and assisting in traction by a trencher to ensure that the submarine cable is smoothly fed to the cable guiding bridge, wherein the cable guiding bridge is adopted from the tail end of a channel to a first dam of a landing point and a directional drilling position.
According to the scheme, the method of floating and dragging along the submarine cable routing excavation channel is adopted, and the winch and the amphibious ditcher are used for dragging, so that the implementation of the submarine cable crossing ultra-long shoal laying is completed, the process is simple to operate, and the time consumption is short; the invention solves the problem that the shoal can not be towed in a floating way, avoids the submarine cable from towing on the seabed, and greatly reduces the abrasion of the submarine cable.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The construction method for laying the submarine cable penetrating through the ultra-long shoal is characterized by comprising the following steps of;
arranging a traction platform and a winch;
acquiring land main cable routing coordinates, and pre-digging a river channel according to the main cable routing coordinates;
setting a buoy in a pre-excavated river channel;
starting the submarine cable laying ship, and after the submarine cable laying ship reaches a planned position, towing the submarine cable by means of a winch on the basis of a towing platform and a buoy until the submarine cable is towed to a landing point directional drilling position;
after the submarine cable is pulled in place, the cable buoy in the pre-excavated river channel is removed, the submarine cable is piled at the inflection point to serve as a turning point to fix the submarine cable and cannot shift, the submarine cable at the pre-excavated river channel is dug and buried by adopting a waterway amphibious ditcher, the bare submarine cable at the non-dug position of the near-shore section is dug and buried after the submarine cable is dug and buried, and the submarine cable is completely buried in the ditch to serve as landing point submarine cable anchoring.
2. The method of constructing a marine cable traversing ultra-long shoal laying as claimed in claim 1, wherein the step of obtaining coastal main cable routing coordinates, and pre-excavating the channel according to the coastal main cable routing coordinates, comprises: and measuring underwater topography geological survey of the routing area, carrying out sea sweeping operation, loading sea cables on a ship, carrying out dish distribution and transportation, setting a beach in place of the sea cable laying ship and setting a corner device of a shoal area.
3. A submarine cable traversing ultra-long shoal laying construction method according to claim 1, wherein said arranging a towing platform and winch comprises: a winch is placed at the first dam position of the land main cable routing extension line, a ground anchor is arranged at the back of the winch, and the ground anchor is provided with an anchor cable and is connected to the winch through the anchor cable for dragging a submarine cable.
4. The method for constructing a sea cable crossing ultra-long shoal laying according to claim 1, wherein the pre-digging of the channel according to the main cable routing coordinates comprises:
based on the main cable route coordinates, the bamboo poles are used for making in-place records, the amphibious ditcher is used for pre-digging the V-shaped river channel, limiting piles are inserted every one meter after ditching, and the landing points are constructed by adopting directional rotation at sea walls.
5. The submarine cable crossing ultra-long shoal laying construction method according to claim 1, wherein a buoy is provided in a pre-excavated river, comprising: and starting a cable laying machine to lay cables by adopting a submarine cable laying ship, and binding foam floating balls on a stern deck according to a preset distance.
6. A method of marine cable-traversing ultra-long shoal laying construction as claimed in claim 1 wherein said towing of the marine cable by means of a winch based on a towing platform and a buoy, until towing to a landing point directional drilling location, comprises:
the traction steel wire is towed to the stern water inlet groove along a submarine cable route by the submarine cable laying ship to be connected with the submarine cable, and the traction steel wire is towed to the stern by a traction landing point to be connected with the submarine cable, so that a well-arranged traction device is arranged along the route;
the waterway amphibious trencher auxiliary winch pulls the submarine cable, the landing point winch slowly recovers the traction steel wire and the waterway amphibious trencher auxiliary winch pulls the submarine cable;
and (3) dragging the submarine cable terminal to reach the cable guiding bridge, and assisting in traction by a trencher to ensure that the submarine cable is smoothly fed to the cable guiding bridge, wherein the cable guiding bridge is adopted from the tail end of a channel to a first dam of a landing point and a directional drilling position.
7. The method for constructing a sea cable running through an ultra-long shoal according to claim 1, wherein after the sea cable is pulled to the landing point directional drill position, the sea cable pulled to the landing point directional drill position and crossing the dam distance is reserved.
8. A submarine cable traversing ultra-long shoal laying construction system, comprising:
a towing platform arrangement module for arranging a towing platform and a winch;
the buoy setting module is used for acquiring land main cable routing coordinates and pre-digging a river channel according to the main cable routing coordinates; setting a buoy in a pre-excavated river channel;
the floating and towing module is used for starting the submarine cable laying ship, and after the submarine cable laying ship reaches a planned position, floating and towing the submarine cable by means of a winch based on a towing platform and a buoy until the submarine cable laying ship is towed to a landing point directional drilling position;
the submarine cable burying module is used for pulling the submarine cable in place, then removing the cable buoy in the pre-excavated river course, piling at the inflection point to fix the submarine cable as a turning point and enabling the submarine cable not to shift, ditching and burying the submarine cable at the pre-excavated river course by adopting a waterway amphibious ditcher, ditching and burying the bare submarine cable at the non-ditched position of the offshore section, and completing the full ditching and landfill of the submarine cable to be used as a landing point submarine cable anchoring.
9. A submarine cable traversing ultra-long shoal laying construction system according to claim 8, wherein the system further comprises a construction equipment module for performing underwater topography geological survey measurements of the routing area and performing sea sweeping operations, submarine cable loading and distribution and transportation, submarine cable laying ship beach seating and shoal area corner device setting.
10. A marine cable-traversing ultra-long shoal laying construction system as claimed in claim 8, wherein,
in the float and drag module, based on pull platform and cursory, carry out the float and drag the sea cable with the help of the winch, until dragging to landing point directional drilling position includes:
the traction steel wire is towed to the stern water inlet groove along a submarine cable route by the submarine cable laying ship to be connected with the submarine cable, and the traction steel wire is towed to the stern by a traction landing point to be connected with the submarine cable, so that a well-arranged traction device is arranged along the route;
the waterway amphibious trencher auxiliary winch pulls the submarine cable, the landing point winch slowly recovers the traction steel wire and the waterway amphibious trencher auxiliary winch pulls the submarine cable;
and (3) dragging the submarine cable terminal to reach the cable guiding bridge, and assisting in traction by a trencher to ensure that the submarine cable is smoothly fed to the cable guiding bridge, wherein the cable guiding bridge is adopted from the tail end of a channel to a first dam of a landing point and a directional drilling position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311378354.5A CN117477445A (en) | 2023-10-23 | 2023-10-23 | Submarine cable crossing ultra-long shoal laying construction method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311378354.5A CN117477445A (en) | 2023-10-23 | 2023-10-23 | Submarine cable crossing ultra-long shoal laying construction method and system |
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- 2023-10-23 CN CN202311378354.5A patent/CN117477445A/en active Pending
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