CN110115238B - Installation method of tension type module combined deepwater aquaculture net cage - Google Patents
Installation method of tension type module combined deepwater aquaculture net cage Download PDFInfo
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- CN110115238B CN110115238B CN201910446085.9A CN201910446085A CN110115238B CN 110115238 B CN110115238 B CN 110115238B CN 201910446085 A CN201910446085 A CN 201910446085A CN 110115238 B CN110115238 B CN 110115238B
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- 238000009434 installation Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009360 aquaculture Methods 0.000 title claims abstract description 28
- 244000144974 aquaculture Species 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 238000007667 floating Methods 0.000 claims abstract description 19
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 210000002435 tendon Anatomy 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000001174 ascending effect Effects 0.000 claims description 3
- 238000005188 flotation Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The embodiment of the invention discloses a method for installing a tension type module combined deepwater aquaculture net cage, which comprises the following steps: s100, throwing the suction anchor to a specified position of a seabed for anchoring; s200, respectively installing a plurality of floating drums on two horizontal tension cables, connecting the floating drums on the two horizontal tension cables by using a vertical tension cable, connecting a load transmission disc and the floating drum on the horizontal tension cable below the load transmission disc by using another vertical tension cable, and connecting a netting on each horizontal tension cable and each vertical tension cable to complete installation of the net cage component; s300, ballasting the buoy, sinking the whole net cage to the position of the suction anchor, connecting the net cage to the suction anchor through the tension tendon, then discharging ballast water in the buoy, and lifting the buoy to enable the vertical tension cable and the tension tendon to reach a tensioning state in the vertical direction; s400, transversely towing a plurality of anchor chains arranged on each buoy until the net cage is in a tensioning state, and anchoring.
Description
Technical Field
The embodiment of the invention relates to the technical field of deep water aquaculture net installation methods, in particular to an installation method of a tension type module combined deep water aquaculture net cage.
Background
The water temperature in offshore and shallow sea areas is high and the pollution is increased year by year, which is not suitable for breeding high value-added fish species which are suitable for growth in low temperature environment. The world's well-known major marine fish farming producers have launched fisheries into the deep sea. Because the stormy waves and currents in the open water area of deep sea are large, the structural design of the large-scale deep sea fishing ground becomes one of the main difficulties.
Aiming at the situation, the inventor designs a steel lattice type frame culture net cage as a main body structure, thereby effectively solving the problem of deep sea culture: for example, patent application No. 201811087323.3, entitled wind and wave resistant deepwater aquaculture net cage with tension type module combination, discloses a method for fixing the deepwater aquaculture net cage in deepwater area by forming an integral framework of aquaculture net frames through a second fixing frame and a first fixing frame which are vertically distributed and upright posts which are vertically distributed between the second fixing frame and the first fixing frame, and fixing the aquaculture net cage in deepwater area by using anchor chains and fixing anchors. The composite material has a certain effect of resisting wind waves, but the composite material still has the defects of poor integral rigidity, large volume and heavy weight, and brings great inconvenience to transportation and subsequent installation from a manufacturing site to an installation site. In addition, steel structure corrosion is also one of the problems faced by large-scale fishing farms. This puts high demands on the design and construction of the large-scale net cage.
In order to solve the problems, some existing patents also provide some solutions, such as "a tension-type module combined deepwater aquaculture net spliced lifting type offshore aquaculture net cage" (CN201720963656, CN201710656245), and attempt to optimize in various aspects such as splicing, standard modularization, lifting and the like. However, due to the limitation of the structural design mode, although modular production is adopted and small components are spliced, the main structure is still in a steel frame lattice type, too much splicing brings great difficulty to field installation, and the characteristics of heavy overall structure, serious corrosion problem of connecting parts and the like cannot be avoided through the all-steel structural design.
In addition, a lot of designers design novel aquaculture net cages from the aspects of lifting and typhoon resistance, for example, "a tension type module combined deep-water aquaculture net cage lifting aquaculture net cage" (CN105028270B, CN105028270A, CN105010189B and CN105010189A), but the basic structural form of the cage lifting aquaculture net cage is still a lattice type steel frame structure, and the large-scale development of the cage lifting aquaculture net cage is greatly limited by heavy structure, poor rigidity, inconvenient transportation, corrosion and the like.
Disclosure of Invention
Therefore, the embodiment of the invention provides an installation method of a tension type module combined deepwater aquaculture net cage, and aims to solve the problems that the net cage in the prior art is heavy in structure, inconvenient to install and transport and difficult to enlarge the size.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a method for installing a tension type module combined deep-water aquaculture net cage comprises the following steps:
s100, fixed-point anchoring: the suction anchor is thrown to a specified position of the seabed for anchoring;
s200, installing net cage components: respectively installing a plurality of buoys on two horizontal tension cables, connecting the buoys at corresponding positions on the two horizontal tension cables by using a vertical tension cable, connecting a load transmission disc and the buoys on the horizontal tension cables below by using another vertical tension cable, and connecting a netting on each horizontal tension cable and the vertical tension cable to complete installation of the net cage component;
s300, sinking and vertically hovering the net cage: ballasting the buoy, sinking the whole cage to the position of the suction anchor, connecting the cage to the suction anchor through the tension tendons, then discharging ballast water in the buoy, ascending the buoy, enabling the vertical tension cable and the tension tendons to reach a tensioning state in the vertical direction, and vertically hovering the cage;
s400, transversely stretching the net cage: and transversely dragging the anchor chains arranged on each buoy until the traction force of the anchor chains reaches the state that the net cage is in a tensioning state, and anchoring to complete the fixed-point installation of the net cage.
The embodiment of the present invention is further characterized in that in S200, the horizontal tension cable includes a water surface horizontal tension cable and a water horizontal tension cable, the buoy includes a main buoy and an auxiliary buoy, wherein the main buoy further includes a water surface main buoy and a water main buoy, the auxiliary buoy includes a water surface auxiliary buoy and a water auxiliary buoy, and the vertical tension cable includes an upper vertical tension cable and a lower vertical tension cable; the installation method of the net cage component comprises the following steps:
s201, installing transverse parts of the net cage: connecting a plurality of water surface auxiliary buoys by using water surface horizontal tension cables, and then fixing the connecting parts of two adjacent water surface horizontal tension cables to the water surface main buoy; synchronously connecting a plurality of underwater auxiliary buoys by using horizontal tension cables, and fixing the connecting parts of two adjacent underwater horizontal tension cables to the underwater main buoy to complete the installation of the transverse part of the net cage;
s202, installing vertical parts of the net cage: connecting the water surface main buoy and the water main buoy at corresponding positions by using an upper vertical tension cable; meanwhile, connecting the lower vertical tension cable to the underwater main buoy and the load transmission disc at corresponding positions to complete the installation of the vertical parts of the net cage;
s203, installing a netting: and connecting the horizontal tension cable, the upper vertical tension cable and the lower vertical tension cable to the netting to form a closed structure.
The embodiment of the present invention is further characterized in that in S400, the anchor chain pulls the main buoy in the water to tension the net cage, and the connection mode is as follows: one end of the anchor chain is fixed on the main buoy on the water surface, and the other end of the anchor chain penetrates through the main buoy in the water from top to bottom and is anchored to the seabed.
The embodiment of the present invention is further characterized in that in S400, the anchor chain pulls the main buoy on the water surface to tension the net cage, and the connection mode is as follows: one end of the anchor chain is fixed on the main buoy in the water, and the other end of the anchor chain penetrates through the main buoy on the water surface from bottom to top and is anchored to the seabed.
An embodiment of the present invention is further characterized in that in S300, the buoy ballast realizes buoy sinking through pressure reduction load water inside the buoy; the floating pontoon is lifted by pumping air into the floating pontoon to pressurize and discharging ballast water.
An embodiment of the invention is further characterized in that an ROV is used to connect the tension tendons below the load transfer plate to the fastening means on the suction anchor.
The embodiment of the present invention is further characterized in that in S400, the plurality of anchor chains are radially anchored with the net cage as a center, so that the net cage is in a tensioned state.
An embodiment of the present invention is further characterized in that in S400, the anchor chain is tightened and adjusted by winches and fairleads installed on the respective buoys, respectively.
An embodiment of the present invention is further characterized in that in S400, the anchor chain is pulled to each designated anchoring site via a working vessel and anchored.
The embodiment of the invention is further characterized in that in the step S400, the horizontal rigidity of the net cage in the tensioned state can be improved by adding the number of horizontal tension cables and the number of single-point anchor chains.
The embodiment of the invention has the following advantages:
(1) the invention adopts a full-tension structure, can adjust the length of the tension cable according to the requirement, quickly establishes an ultra-large fishing ground, adopts nylon cables or polyester cables made of high polymer materials to tension and connect except a plurality of main floating cylinders, has the characteristics of corrosion resistance and wind wave compliance, and is not easy to generate structural damage;
(2) the invention is suitable for deep water and ultra-deep water open water areas, and can adjust the ballast of the buoy or the tension tendon to realize lifting under the condition of storm, avoid the area with big storm on the water surface and the like;
(3) the invention is easy to assemble, the main structure is only a buoy, a tension cable, an anchor chain, a suction anchor, a netting and a fastener for connecting the tension cable and the buoy, the volume is small, the transportation is easy, and the installation is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is an overall flow chart of the present invention;
FIG. 2 is a flow chart of a method of installing components of the net cage of the present invention;
fig. 3 is a schematic overall structure diagram of the overall arrangement 1 of the present invention;
FIG. 4 is a schematic diagram of the force analysis of the water surface main buoy in the general arrangement 1 of the present invention;
FIG. 5 is a schematic diagram of the force analysis of the main pontoon in water in the general arrangement 1 of the present invention;
fig. 6 is a schematic view of the overall structure of the general arrangement 2 of the present invention;
FIG. 7 is a schematic diagram of the force analysis of the water surface main buoy in the general arrangement 2 of the present invention;
fig. 8 is a schematic diagram of the force analysis of the main pontoon in water in the general arrangement 2 of the present invention.
In the figure:
1-water surface auxiliary buoy; 2-an underwater auxiliary buoy; 3-an anchor chain; 4-lower vertical tension cable; 5-the seabed; 6-a suction anchor; 7-tendon tension; 8-load transfer discs; 9-a main pontoon in water; 10-an upper vertical tension cable; 11-water surface; 12-a surface main buoy; 13-a buoy; 14-netting; 15-horizontal tension cable at water level; 16-horizontal tension cable in water.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 8, the invention provides an installation method of a tension type module combined deep-water aquaculture net cage, as shown in fig. 1, comprising the following steps:
s100, fixed-point anchoring: the suction anchor 6 is thrown to the specified position of the seabed 5 for anchoring;
s200, installing net cage components: installing a plurality of floating drums on the two horizontal tension cables respectively, connecting the floating drums at corresponding positions on the two horizontal tension cables by using the vertical tension cable, connecting the load transmission disc 8 and the floating drum on the horizontal tension cable below the load transmission disc by using the other vertical tension cable, and connecting the netting 14 to each horizontal tension cable and the vertical tension cable to complete the installation of the net cage component;
s300, sinking and vertically hovering the net cage: and ballasting the buoy, sinking the whole net cage to the position of the suction anchor 6, and connecting the tension tendon 7 below the load transmission disc 8 with a fastening device on the suction anchor 6 by using an ROV (remote operated vehicle). Then, discharging ballast water in the buoy, ascending the buoy to enable the vertical tension cable and the tension tendon 7 to reach a tensioning state vertically, and enabling the net cage to vertically suspend;
the floating pontoon ballast realizes the sinking of the floating pontoon through the decompression load water inside the floating pontoon; the floating pontoon is lifted by pumping air into the floating pontoon to pressurize and discharging ballast water.
S400, transversely stretching the net cage: and transversely dragging the anchor chains 3 arranged on each buoy until the traction force of the anchor chains 3 reaches the aim of enabling the net cage to be in a tensioning state, and performing anchor dropping to finish fixed-point installation of the net cage.
Preferably, the plurality of anchor chains 3 are radially anchored by taking the net cage as a center, so that the net cage is in a tensioning state. The anchor chains 3 are tightened and adjusted by winches and fairleads mounted on the respective buoys. And the anchor chain 3 is towed to each appointed anchoring place by the working ship to be anchored.
Further explaining the installation method of the net cage component: in S200, the horizontal tension cable comprises a water surface horizontal tension cable 15 located on a water surface 11 and a submerged underwater horizontal tension cable 16, the buoy comprises a main buoy and an auxiliary buoy, the main buoy further comprises a water surface main buoy 12 and a submerged main buoy 9, the auxiliary buoy comprises a water surface auxiliary buoy 1 and a submerged auxiliary buoy 2, and the vertical tension cable comprises an upper vertical tension cable 10 and a lower vertical tension cable 4; referring to fig. 2, the installation method of the net cage component comprises the following steps:
s201, installing transverse parts of the net cage: a plurality of water surface auxiliary buoys 1 are connected by water surface horizontal tension cables 15, and then the connecting parts of two adjacent water surface horizontal tension cables 15 are fixed on the water surface main buoy 12; synchronously connecting a plurality of underwater auxiliary buoys 2 by using underwater horizontal tension cables 16, and then fixing the connecting parts of two adjacent underwater horizontal tension cables 16 on the underwater main buoy 9 to complete the installation of the transverse part of the net cage;
wherein horizontal tension cable is connected by the tension hawser that a plurality of heads and tails can dismantle the connection in proper order, during the installation, can be with vice flotation pontoon suit respectively on each tension hawser, the coupling part between two adjacent tension hawsers is regarded as to main flotation pontoon, has two kinds of connected modes:
the first method comprises the following steps: the horizontal tension cable and the vertical tension cable are directly connected to the main buoy, the structure is simple in the mode, intermediate transition parts are not needed, the main buoy directly bears the connecting structure of each part, and each part plays a relatively critical role in the stability and integrity of the whole mechanism.
And the second method comprises the following steps: a plurality of telescopic clamping devices (not shown in the figure) are independently arranged to realize the connection among the horizontal tension cable, the vertical tension cable and the main buoy. The structures are connected by the telescopic clamping device, so that the dependence relationship among components is reduced, and even if part of the components are damaged or destroyed, the whole effect of the device is not greatly influenced.
S202, installing vertical parts of the net cage: the water surface main buoy 12 and the water main buoy 9 at the corresponding positions are connected by an upper vertical tension cable 10; meanwhile, the lower vertical tension cable 4 is connected to the underwater main buoy 9 and the load transmission disc 8 at corresponding positions, so that the installation of the vertical parts of the net cage is completed;
s203, installation of the netting 14: and connecting the horizontal tension cable 15, the horizontal tension cable 16, the upper vertical tension cable 10 and the lower vertical tension cable 4 to the netting 14 to form a closed structure.
According to the difference of the connection sequence of the anchor chain 3, the water surface main buoy 12 and the water main buoy 9, two general arrangement forms of the aquaculture net cages are generated.
In S400 of the general arrangement 1, the anchor chain 3 pulls the main pontoon 9 in the water to tension the cage, and the connection mode is as follows: one end of the anchor chain 3 is fixed on the main buoy 12 on the water surface, and the other end of the anchor chain penetrates through the main buoy 9 in the water from top to bottom and is anchored to the seabed 5.
In S400 of the general layout 2, the anchor chain 3 pulls the main buoy 12 on the water surface to tension the net cage, and the connection mode is as follows: one end of the anchor chain 3 is fixed on the main buoy 9 in the water, and the other end penetrates through the main buoy 12 on the water surface from bottom to top and is anchored to the seabed 5.
The stability of box with a net is all improved to two kinds of general arrangement forms, can resist high strength stormy waves.
The installation method adopts the assembly form of the floating barrels and the tension cables, so that the transportation is extremely convenient, and if the volume of the fishing ground needs to be increased according to needs, the lengths of the horizontal tension cables and the vertical tension cables are increased, the number of the auxiliary floating barrels is increased or the volume of the main floating barrel is increased to provide necessary buoyancy for supporting the weight of the netting, and then the tension of the anchor chain is adjusted, so that the fishing ground can be quickly increased, and the construction of the deep and far sea ultra-large fishing ground can be realized.
In addition, the installation structure adopts a compliant and liftable design, so that the wind wave resistance is strong. The use of polymer polyester cable or nylon cable has avoided the emergence of corrosion problem greatly, and reduces structure weight, has reduced the buoyant barrel volume and quantity requirement. In order to improve the reliability of the structural system, the number of horizontal tension cables and the number of single-point mooring anchor chains can be increased, so that the structure can still keep a stable state even if part of the tension cables fail.
The mounting device according to the mounting method of the present invention is characterized in that: the tension structure is used for replacing the traditional metal lattice structure, and has the characteristics of light weight, corrosion resistance and low cost. Simultaneously, the tension structure is convenient to transport, the detachment and the installation are rapid, more importantly, the size and the size can be adjusted in a short time, the large-scale operation can be realized rapidly, the structure is not heavy like a metal lattice structure, in case of forming, the later modification is troublesome and laborious, and the installation scheme is difficult to adjust due to the fact that the water depth and the water flow condition are higher. Specifically, the buoy, the horizontal tension cable, the vertical tension cable, the tension tendon 7 and the netting 14 are all detachable structures, can be installed immediately, can be transported immediately after being detached, and are exponentially improved in installation efficiency compared with the conventional aquaculture net cage.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. A method for installing a tension type module combined deep-water aquaculture net cage is characterized by comprising the following steps:
s100, fixed-point anchoring: the suction anchor is thrown to a specified position of the seabed for anchoring;
s200, installing net cage components: respectively installing a plurality of buoys on two horizontal tension cables, connecting the buoys at corresponding positions on the two horizontal tension cables by using a vertical tension cable, connecting a load transmission disc and the buoys on the horizontal tension cables below by using another vertical tension cable, and connecting a netting on each horizontal tension cable and the vertical tension cable to complete installation of the net cage component;
s300, sinking and vertically hovering the net cage: ballasting the buoy, sinking the whole cage to the position of the suction anchor, connecting the cage to the suction anchor through the tension tendons, then discharging ballast water in the buoy, ascending the buoy, enabling the vertical tension cable and the tension tendons to reach a tensioning state in the vertical direction, and vertically hovering the cage;
s400, transversely stretching the net cage: transversely pulling a plurality of anchor chains arranged on each buoy until the traction force of the anchor chains reaches the state that the net cage is in a tensioning state, and performing anchor dropping to finish the fixed-point installation of the net cage;
in S200, the horizontal tension cable includes a water surface horizontal tension cable and a water horizontal tension cable, the buoy includes a main buoy and an auxiliary buoy, wherein the main buoy further includes a water surface main buoy and a water main buoy, the auxiliary buoy includes a water surface auxiliary buoy and a water auxiliary buoy, and the vertical tension cable includes an upper vertical tension cable and a lower vertical tension cable; the installation method of the net cage component comprises the following steps:
s201, installing transverse parts of the net cage: connecting a plurality of water surface auxiliary buoys by using water surface horizontal tension cables, and then fixing the connecting parts of two adjacent water surface horizontal tension cables to the water surface main buoy; synchronously connecting a plurality of underwater auxiliary buoys by using horizontal tension cables, and fixing the connecting parts of two adjacent underwater horizontal tension cables to the underwater main buoy to complete the installation of the transverse part of the net cage;
s202, installing vertical parts of the net cage: connecting the water surface main buoy and the water main buoy at corresponding positions by using an upper vertical tension cable; meanwhile, connecting the lower vertical tension cable to the underwater main buoy and the load transmission disc at corresponding positions to complete the installation of the vertical parts of the net cage;
s203, installing a netting: connecting the horizontal tension cable, the upper vertical tension cable and the lower vertical tension cable to a netting to form a closed structure;
including, in S400, the anchor chain makes the box with a net be in the tensioning state through drawing the main flotation pontoon in the aquatic, and its connected mode is: one end of an anchor chain is fixed on the main buoy on the water surface, and the other end of the anchor chain penetrates through the main buoy in the water from top to bottom and is anchored to the seabed;
or further comprising that in S400, the anchor chain pulls the main buoy on the water surface to enable the net cage to be in a tensioning state, and the connection mode is as follows: one end of the anchor chain is fixed on the main buoy in the water, and the other end of the anchor chain penetrates through the main buoy on the water surface from bottom to top and is anchored to the seabed.
2. The method for installing the tension type module combined deep-water aquaculture net cage as claimed in claim 1, wherein the method comprises the following steps: in the step S300, the buoy ballast realizes the sinking of the buoy through the pressure reduction load water inside the buoy; the floating pontoon is lifted by pumping air into the floating pontoon to pressurize and discharging ballast water.
3. The method for installing the tension type module combined deep-water aquaculture net cage as claimed in claim 1, wherein the method comprises the following steps: and connecting the tension tendon below the load transfer plate with a fastening device on the suction anchor by using an ROV (remote operated vehicle).
4. The method for installing the tension type module combined deep-water aquaculture net cage as claimed in claim 1, wherein the method comprises the following steps: in S400, the plurality of anchor chains are radially anchored with the net cage as a center, so that the net cage is in a tensioned state.
5. The method for installing the tension type module combined deep-water aquaculture net cage as claimed in claim 1, wherein the method comprises the following steps: in S400, the anchor chain is tightened and adjusted by the winches and the fairleads mounted on the respective buoys.
6. The method for installing the tension type module combined deep-water aquaculture net cage as claimed in claim 1, wherein the method comprises the following steps: in S400, the anchor chain is pulled to each designated anchoring point via a working vessel and anchored.
7. The method for installing the tension type module combined deep-water aquaculture net cage as claimed in claim 1, wherein the method comprises the following steps: in the step S400, the horizontal rigidity of the net cage in the tensioning state can be improved by additionally arranging the number of horizontal tension cables and the number of single-point anchor chains.
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