CN102296566B - Floating wave-absorbing system - Google Patents
Floating wave-absorbing system Download PDFInfo
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- CN102296566B CN102296566B CN2011101491736A CN201110149173A CN102296566B CN 102296566 B CN102296566 B CN 102296566B CN 2011101491736 A CN2011101491736 A CN 2011101491736A CN 201110149173 A CN201110149173 A CN 201110149173A CN 102296566 B CN102296566 B CN 102296566B
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- buoyant raft
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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
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- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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Abstract
The invention discloses a floating wave-absorbing system comprising anchoring equipment and at least two rows of floating rafts, wherein one row of floating systems consist of a plurality of floating rafts which are longitudinally arranged at intervals; the bottom parts of the floating rafts are provided with wave-absorbing and yaw-checking devices; the floating rafts of the two adjacent rows of floating raft systems are arranged in a staggered manner; the spacing between every two floating rafts in the one row of floating systems is not more than the length of a floating raft body; the floating raft is a floating structure with certain volume and self weight; mooring chain piles are arranged on the surfaces of the floating rafts; and the wave-absorbing and yaw-checking devices are at least one row of box bodies which are longitudinally and fixedly arranged at the bottom parts of the floating rafts. The floating wave-absorbing system has the advantages that the wave-absorbing effect is good, the manufacture and the installation are simple and the cost is low and the like.
Description
Technical field
A kind of system for wave absorption, particularly a kind of wave dissipation effect is good, non-damageable floating wave-absorbing system.Background technology
Mole is mainly used in the wave of defending the off-lying sea to transmit, and the stably condition of stevedoring operations environment and the safety in production of mariculture district is provided.Mole has fixed mole and floating breakwater two large classes.
Fixed mole can do great damage to water ecological setting owing to it, and construction costs is expensive, is not suitable for the mariculture district.
Floating breakwater is to utilize Wave energy mainly to concentrate on the characteristics on water body top layer, moves under wave action by buoyancy aid, with the decay wave force, thereby plays certain wave absorbing function.Floating breakwater normally makes the floating member with steel, steel concrete or plastics and mooring system forms wave trap.The mole of this form can keep the function of exchange of seawater, the control seawater pollution, and along with the increase of using water depth, its cost performance is more and more higher.But need multiple technologies equipment and corresponding technical measures to support, guarantee uses the survival ability under safety and the diastrous weather condition.At present, all be in the research and development stage both at home and abroad, it is very few really to have an actual use value person.The developed countries such as America and Europe then tend to maximize, and use the method for function by increasing mole, to improve cost performance.For the mariculture district, because its cost is too high, can't accept at all.
Summary of the invention
The object of the present invention is to provide a kind of 1, wave dissipation effect is good; 2, manufacturing is installed simple, with low cost; 3, self structure is reasonable, and the probability that is damaged is low, and recoverability is good, uses safety; 4, adaptable for environment adjusted the parameter of product according to different marine sites, improves wave dissipation effect; 5 agent structure good corrosion resistances, long service life.6, little to the ambient ocean ambient influnence, the floating wave-absorbing system of the destruction that the major works of avoiding equivalent technology causes surrounding environment.
The objective of the invention is to realize by following structure: it comprises anchoring and mooring system, described anchoring and mooring system comprises the anchorage piece, the tethers stake, two ends connect respectively the anchor chain of anchorage piece and tethers stake, it is characterized in that: it also comprises at least two rows' buoyant raft system, single buoyant raft system is made of with the buoyant raft longitudinal separation arrangement that wave absorption only swings device some bottoms, and the buoyant raft of adjacent two row's buoyant raft systems is alternately staggered, in the single buoyant raft system in twos the spacing between the buoyant raft be not more than the length of buoyant raft itself, spacing between the described buoyant raft system, the width of buoyant raft is determined by the sea situation of using the marine site, its relation is as follows: the width between the adjacent buoyant raft system of two rows is not less than 2 times of buoyant raft width, namely the overall widths of two row's buoyant raft systems are not less than 4 times of buoyant raft width, and the overall widths of two row's buoyant raft systems are not less than 0.65 times that uses marine site deep water wavelength;
Described buoyant raft is the unsteady structure with certain volume and deadweight, and the tethers stake is arranged on the buoyant raft face, and it is that stationary arrangement at least one row, vertical is at several casings of buoyant raft bottom that described wave absorption only swings device.
The present invention has the following advantages: 1, it utilizes the unsteady structure with certain volume and deadweight; be subjected to each to produce motion to stormy waves stream compound action at sea; energy with the decay External Force Acting plays certain wave absorbing function, and harbor district and mariculture district are protected.Simultaneously wave absorption only swings below the baseline that device is located at buoyant raft, the soak degree of depth and lateral projection's area under water of buoyancy aid have effectively been increased, improved the effect of buoyancy aid decay wave force, large-scale or superhuge unsteady structure with tradition simultaneously, rationally be divided into the standard module of some reduced sizes, disperse to distribute across the sea in an orderly manner, the motion that under the different force effect, occurs separately by module, can reduce under the diastrous weather condition, environmental forces is to the destruction of aquaculture net cage.Under general sea situation, can satisfy the requirement of ship loading and unloading and alongside operation.2, draw materials easily, can batch production production and directly transportation installation.3, the recoverability of agent structure is good.As unsteady structure, at sea unavoidably by him ship and floating thing collision generation breakage.Because the manufacturing of composite material ferrocement is adopted at the damaged position of the easiest generation in the agent structure, in case breakage occurs, can place under repair at the scene.4, wave absorption only swings device employing reassembling type split box structure, can adopt different ballast and off-load method according to the wave parameter of using the marine site, changes band water quality moment of inertia and the height of C.G. of buoyancy aid, and the rolling cycle of adjusting module improves wave dissipation effect.5, agent structure adopts high-performance shipbuilding concrete and composite material ferrocement to make, and resistance to corrosion seawater is strong, long service life; Adopt box-shaped rib steel reinforced beam and slab structure can give full play to the mechanical property of different structure material, improve the utilization rate of material, guarantee overall strength, transverse strength and the local strength of agent structure; The assembling of employing prefabricate, whole high frequency slurry molding also help the realization batch production and produce in a large number except the quality that guarantees product, reduce cost.6, be used for the offshore sea waters water surface, without large-scale fixing labyrinth, avoided the impact near ecosystem.
Description of drawings
Fig. 1 is the drawing in side sectional elevation of binary buoyant raft structure;
Fig. 2 is the drawing in side sectional elevation of trisome buoyant raft structure;
Fig. 3 is the drawing in side sectional elevation of many bodies buoyant raft structure;
The distribution of the subregional buoyant raft of Fig. 4 Account Dept and the configuration relation figure of standard module anchoring and mooring system;
Fig. 5 is for only swinging the sectional side view of the buoyant raft of device with wave absorption;
Fig. 6 is for only swinging the top view of the buoyant raft of device with wave absorption;
The structure chart of Fig. 7 on Fig. 7 basis, buoyant raft subregion upper surface being analysed and observe;
Fig. 8 is the structural representation of framework.
Label declaration
1 buoyant raft, 11 outside plates, 12 grooves, 13 frameworks, 14 shifting boards, 15 wave walls, 16 are received the limit, 2 wave absorptions only swing device, 21 edges, 31 anchorage pieces, 32 tethers stakes, 33 anchor chains, 34 chain pipes, 41 unidirectional anchorage pieces, 42 two-way anchorage pieces, 43 three-dimensional anchorage pieces.
The specific embodiment
As shown in Figure 4: the present invention includes anchoring and mooring system, by the fixing agent structure of the present invention of anchoring and mooring system; Described anchoring and mooring system comprises anchorage piece 31, tethers stake 32, two ends connect respectively the anchor chain 33 of anchorage piece and tethers stake, it also comprises at least two rows' buoyant raft system, single buoyant raft system is made of with the buoyant raft 1 longitudinal separation arrangement that wave absorption only swings device 2 some bottoms, and the buoyant raft of adjacent two row's buoyant raft systems is alternately staggered, in the single buoyant raft system in twos the spacing between the buoyant raft be not more than the length of buoyant raft itself, like this when wave that the spacing in the front-seat float raft body system sees through can by after row's buoyant raft carry out wave absorption and process, reach good wave dissipation effect, wherein in the single buoyant raft system in twos the spacing between the buoyant raft to equal the length effect of buoyant raft itself optimum, when can reaching wave dissipation effect, can reduce the use amount of buoyant raft, save cost; Spacing between the described buoyant raft system, the width of buoyant raft is determined by the sea situation of using the marine site, its relation is as follows: the width between the adjacent buoyant raft system of two rows is not less than 2 times of buoyant raft width, namely the overall widths of two row's buoyant raft systems are not less than 4 times of buoyant raft width, and the overall widths of two row's buoyant raft systems are not less than 0.65 times that uses marine site deep water wavelength; The purpose that arranges so also is in order to reach good wave dissipation effect, because the buoyant raft width is relevant with the marine site mean wavelength, width between front-seat buoyant raft and the rear row's buoyant raft system is set to equal 2 times of buoyant raft width, namely the overall widths of two row's buoyant raft systems equal 4 times of buoyant raft width, when making the overall widths of two row's buoyant raft systems equal to use 0.65 times of marine site deep water wavelength, the width of buoyant raft is minimum, and the cost of production of buoyant raft is minimum.
Described buoyant raft is the unsteady structure with certain volume and deadweight, the tethers stake is arranged on the buoyant raft face, the buoyant raft main purpose is to emerge for the object that can make whole system, it is that stationary arrangement at least one row, vertical is at several casings of buoyant raft bottom that described wave absorption only swings device, the purpose of casing is in order to increase the soak degree of depth and lateral projection's area under water of buoyancy aid, thus the effect that improves buoyancy aid decay wave.Its principle mainly is basis
Rolling, pitching, heave, lateral drift, longitudinal drift and head and the tail can occur and swing under the different force effect in buoyancy aid.The amplitude of its motion is with principal dimensions, shape and the deadweight of the size of External Force Acting and buoyancy aid self and different.The standard module that utilization has certain volume and deadweight moves under wave action, with the decay wave force, thereby plays wave absorbing function, the aquaculture net cage in institute's sheltered waters is protected, for harbor district provides stably stevedoring operations environment.
The agent structure of native system is only to swing the buoyant raft (standard module) of device with wave absorption, because its freeboard is little, without the upper strata building, wind area is little again, and the impact of wind-engaging power effect is very little; Because it lateral projection's area is large under water, be subjected to lateral current to do the time spent, be greatly than the impact of wind-force effect, but its main movement form is lateral shift, the general motion amplitude is all little.And what standard module was had the greatest impact is exactly wave force.
Buoyant raft (standard module) is at sea located by anchoring and mooring system, under the wave period effect, of short duration each occurs to motion, along with decay and the disappearance of External Force Acting, because the reaction force of anchoring and mooring system sets back very soon.Thereby the module of orderly distribution can not bumped mutually.Can bear again simultaneously the wave action in next cycle, go round and begin again, reach the effect of continuous wave absorption.
Hollow or the inner casing that is filled with the rectangular structure of low density material that described buoyant raft surrounds for the outside plate 11 by high-performance shipbuilding concrete and ferrocement manufacturing, buoyant raft (standard module) carries out the unsinkability design according to the ambient conditions and the actual operation requirements that use the marine site by following three kinds of methods:
1. reserve buoyancy method---utilize buoyant raft itself reserve buoyancy, by the heavy requirements of any two anti-heavy cabin damage and water inflows, carry out the unsinkability design;
2. local completion method---collect the used foamed plastics in mariculture district and the upper floating thing on harbor district sea, be filled in the anti-heavy cabin, can effectively reduce the agent structure breakage after, the inflow the cabin in, raising unsinkability standard.
3. foam-in-place process---the industrial chemicals foam-in-place technology such as employing polymer will all resist heavy inner space, cabin to fill up, and make buoyant raft become round-the-clock anti-sink-float body, can guarantee the insubmersibility in any damaged situation of agent structure.
Shown in Fig. 1 ~ 3,5 ~ 8: upper surface two ends and the mid point along its length at casing respectively is provided with a pair of tethers stake, also be provided with at least one row's groove 12 at the upper surface of casing, described groove is between an end tethers stake and the stake of mid point tethers and between the stake of mid point tethers and the stake of other end tethers, the bottom of groove is provided with the opening that runs through the buoyant raft bottom, the size of opening is corresponding with the cross section of casing, is provided with to receive limit 16 around opening; Box rib steel reinforced beam and slab structure is adopted in zone in buoyant raft except groove, namely being provided with many rows is used for supporting the framework 13 of buoyant raft inside wall and cutting apart the shifting board 14 that the buoyant raft inner space forms independent watertight compartment, framework can play the effect of strengthening buoyant raft, shifting board is separated out independently the effect of also having played certain reinforcement buoyant raft in the anti-heavy storehouse in buoyant raft, also be provided with the chain pipe that runs through the upper and lower surface of buoyant raft 34 that passes through for anchor chain on the buoyant raft.Chain pipe is located in the buoyant raft, can play raft structure is carried out the part reinforcement, can bear the impulsive load under the diastrous weather condition.Anchor chain from buoyant raft bottom entry, avoids anchor chain directly to be subjected to wave to spatter the easier corrosion of effect in atmospheric environment by chain pipe.
Because buoyant raft adopts box-shaped rib steel reinforced beam and slab structure, can the dead load of minimizing own, be convenient to batch production, raise labour productivity, can improve simultaneously the bulk strength of buoyant raft, the framework in the transverse member and watertight thwartship bulkhead all adopt ferrocement prefabricated thin-wall member.
The side plate of buoyant raft is owing to be subjected to wave to spatter the alternation of wetting and drying effect, is the position of easy corrosion, all adopts the composite material ferrocement, adopts high frequency grouting vertical forming.Deck and construction of bottom plates operating condition are good, and the template mounting or dismounting are convenient, then adopt high-performance shipbuilding concrete, the integral planar vibrating forming.
The wave absorption of box structure only swings device and all adopts high-performance shipbuilding concrete flat section preassembly method to make.For improving the durability of system, increase the service life, all surfaces that directly contacts with seawater all adopt macromolecular material to carry out impregnation process.
For the steel components of buoyancy aid and contact with sea water, except carrying out oil paint coating, should leave enough corrosion allowances, make its application life synchronous with agent structure as far as possible.
Sometimes in order to adjust the immersed depth of buoyant raft, generally can the width adjusting of the soffit of buoyant raft is little.
Buoyancy aid (standard module) reaches regulation when scrapping service life, can be dragged to and specify the marine site, sinks to the seabed, as artificial marine habitat.
Be provided with two rows and two rows with the buoyant raft of upper groove, between adjacent in twos groove, the upper surface of buoyant raft also is provided with the wave wall that is arranged in parallel with groove, when wave wall has two groups or more, be that groove has three rows or three rows when above, the height of wave wall 15 is increased progressively one by one by outer wave wall to internal layer wave wall.In general, the row of groove mostly is three rows most, can directly cause the structure of buoyant raft and the rising of cost more than three rows.
In general, according to the row of groove, buoyancy aid is divided into binary buoyant raft, trisome buoyant raft, many bodies buoyant raft, above-mentioned three kinds of buoyant rafts are the situation of a corresponding row, two rows, three row's grooves respectively.
It is the cuboid hollow-core construction that described wave absorption only swings device box, wave absorption only swings device box and is provided with into outfall, be provided with the edge 21 that extends laterally around the top margin, described edge is corresponding with the receipts limit of the opening of buoyant raft bottom, and wave absorption only swings the device box bottom surface and puts into until the receipts edge joint of the opening of edge and buoyant raft bottom touches from the opening of buoyant raft down.Generally in the process of design, wave absorption is not only swung device directly and buoyant raft be designed to one, but employing split-type design, can save production cost like this, the major function that wave absorption only swings device is in order to increase native system under water lateral projection's area and the degree of depth of soaking of regulating whole system, so its overall structure is cuboid, section carries out hollow design within it simultaneously, conveniently pours into seawater or other weights.
As shown in Figure 4: the buoyant raft in the buoyant raft system adopts two vertical chains and four reverse locate modes of intersecting chain to position, the scheme of this locate mode is as follows: described anchorage piece is steel bar concrete anchorage piece, according to towards being divided into unidirectional anchorage piece 41, two-way anchorage piece 42, three-dimensional anchorage piece 43, the distribution situation of anchorage piece and buoyant raft is as follows: on any one buoyant raft axis along its length in front-seat buoyant raft system, be followed successively by from front to back unidirectional anchorage piece, two-way anchorage piece, buoyant raft, three-dimensional anchorage piece, unidirectional anchorage piece is connected to the tethers stake that the along its length mid point of first row buoyant raft is provided with by anchor chain, anchor chain in the middle of the three-dimensional anchorage piece is connected to the tethers stake that the along its length mid point of first row buoyant raft is provided with, and the both sides of three-dimensional anchorage piece and two-way anchorage piece connect respectively the rear row buoyant raft system buoyant raft nearest tethers stake adjacent with the described buoyant raft of front-seat buoyant raft system by anchor chain; On any one buoyant raft axis along its length in rear row's buoyant raft system, be followed successively by from front to back three-dimensional anchorage piece, buoyant raft, two-way anchorage piece, unidirectional anchorage piece, connected mode is identical with the connected mode of the described anchorage piece of front-seat buoyant raft system.
Originally traditional locate mode adopts radial location, it generally is the design scheme of the corresponding anchor of a chain, and present unidirectional, the two-way and three-dimensional anchorage piece designed according to the arrangement of attenuating shock wave system standard module makes the total amount of system's anchor block reduce half, saved the investment of engineering construction.
The principal dimensions of standard module, is determined behind longitudinal strength, transverse strength and local strength check by techno-economic appraisal and the principal dimensions analysis of each scheme according to the natural conditions of using the marine site, wave parameter with to the requirement of wave dissipation effect.The depth requirements that soaks of described buoyant raft system is greater than using 2 times of marine site mean wave height; The buoyant raft system rolling period equal to use marine site mean wave period.
Estimated revenue of the present invention is as follows:
| Parameter name | Concrete numerical value |
| Cover oceanic area | 1.5 square kilometre |
| System's total length | 2500m |
| System's overall width | 28m |
| The unit length cost | 25000 yuan/meter |
| Gross investment | About 7,000 ten thousand yuan |
| The aquaculture output value | 2.5 hundred million yuan/year |
| Returns of investment | 3,800 ten thousand yuan/year |
| Pay off period | About 1.84 |
Claims (6)
1. floating wave-absorbing system, it comprises anchoring and mooring system, described anchoring and mooring system comprises anchorage piece (31), tethers stake (32), two ends connect respectively the anchor chain (33) of anchorage piece and tethers stake, it is characterized in that: it also comprises at least two rows' buoyant raft system, single buoyant raft system is arranged formation by some bottoms with buoyant raft (1) longitudinal separation that wave absorption only swings device (2), and the buoyant raft of adjacent two row's buoyant raft systems is alternately staggered, in the single buoyant raft system in twos the spacing between the buoyant raft be not more than the length of buoyant raft itself, spacing between the described buoyant raft system, the width of buoyant raft is determined by the sea situation of using the marine site, its relation is as follows: the width between the adjacent buoyant raft system of two rows is not less than 2 times of buoyant raft width, namely the overall widths of two row's buoyant raft systems are not less than 4 times of buoyant raft width, and the overall widths of two row's buoyant raft systems are not less than 0.65 times that uses marine site deep water wavelength;
Described buoyant raft is the unsteady structure with certain volume and deadweight, and the tethers stake is arranged on the buoyant raft face, and it is that stationary arrangement at least one row, vertical is at several casings of buoyant raft bottom that described wave absorption only swings device.
2. floating wave-absorbing system according to claim 1, it is characterized in that: hollow or the inner casing that is filled with the rectangular structure of low density material that described buoyant raft surrounds for the outside plate (11) of being made by high-performance shipbuilding concrete and ferrocement, upper surface two ends and mid point along its length at casing respectively is provided with a pair of tethers stake, also be provided with at least one row's groove (12) at the upper surface of casing, described groove is between an end tethers stake and the stake of mid point tethers and between the stake of mid point tethers and the stake of other end tethers, the bottom of groove is provided with the opening that runs through the buoyant raft bottom, the size of opening is corresponding with the cross section that wave absorption only swings device, is provided with to receive limit (16) around opening; Box rib steel reinforced beam and slab structure is adopted in zone in buoyant raft except groove, namely be provided with many rows and be used for supporting the framework (13) of buoyant raft inside wall and cutting apart the shifting board (14) that the buoyant raft inner space forms independent watertight compartment, on buoyant raft, also be provided with the chain pipe that runs through the upper and lower surface of buoyant raft (34) that passes through for anchor chain.
3. floating wave-absorbing system according to claim 2, it is characterized in that: be provided with two rows and two rows with the buoyant raft of upper groove, between adjacent in twos groove, the upper surface of buoyant raft also is provided with the wave wall that is arranged in parallel with groove, when wave wall has two groups or more, be that groove has three rows or three rows when above, the height of wave wall (15) is increased progressively one by one by outer wave wall to internal layer wave wall.
4. floating wave-absorbing system according to claim 2, it is characterized in that: it is the cuboid hollow-core construction that described wave absorption only swings device box, wave absorption only swings device box and is provided with into outfall, be provided with the edge (21) that extends laterally around the top margin, described edge is corresponding with the receipts limit of the opening of buoyant raft bottom, and wave absorption only swings the device box bottom surface and puts into until the receipts edge joint of the opening of edge and buoyant raft bottom touches from the opening of buoyant raft down.
5. floating wave-absorbing system according to claim 1, it is characterized in that: the buoyant raft in the buoyant raft system adopts two vertical chains and four reverse locate modes of intersecting chain to position, the scheme of this locate mode is as follows: described anchorage piece is steel bar concrete anchorage piece, according to towards being divided into unidirectional anchorage piece (41), two-way anchorage piece (42), three-dimensional anchorage piece (43), the distribution situation of anchorage piece and buoyant raft is as follows: on any one buoyant raft axis along its length in front-seat buoyant raft system, be followed successively by from front to back unidirectional anchorage piece, two-way anchorage piece, buoyant raft, three-dimensional anchorage piece, unidirectional anchorage piece is connected to the tethers stake that the along its length mid point of first row buoyant raft is provided with by anchor chain, anchor chain in the middle of the three-dimensional anchorage piece is connected to the tethers stake that the along its length mid point of first row buoyant raft is provided with, and the both sides of three-dimensional anchorage piece and two-way anchorage piece connect respectively the rear row buoyant raft system buoyant raft nearest tethers stake adjacent with the described buoyant raft of front-seat buoyant raft system by anchor chain; On any one buoyant raft axis along its length in rear row's buoyant raft system, be followed successively by from front to back three-dimensional anchorage piece, buoyant raft, two-way anchorage piece, unidirectional anchorage piece, connected mode is identical with the connected mode of the described anchorage piece of front-seat buoyant raft system.
6. floating wave-absorbing system according to claim 1 is characterized in that: the side plate employing composite material ferrocement of described buoyant raft, and employing high frequency grouting vertical forming; Deck and base plate adopt high-performance shipbuilding concrete, integral planar vibrating forming.
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| CN2011101491736A CN102296566B (en) | 2011-06-03 | 2011-06-03 | Floating wave-absorbing system |
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| CN2011101491736A CN102296566B (en) | 2011-06-03 | 2011-06-03 | Floating wave-absorbing system |
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| CN102296566B true CN102296566B (en) | 2013-04-17 |
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| CN102535391B (en) * | 2011-12-31 | 2014-10-15 | 中山大学 | Anti-wave ocean platform |
| CN108995778A (en) * | 2018-08-17 | 2018-12-14 | 招商局重工（江苏）有限公司 | A kind of floating drilling platform being suitble in polar region ice formation and severe sea condition |
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| TW206274B (en) * | 1991-07-08 | 1993-05-21 | Aramura Masateru | |
| CN1806536A (en) * | 2006-01-27 | 2006-07-26 | 中国海洋大学 | Flexible floated wave-resistant bank device served for cultivation as well |
| CN201254710Y (en) * | 2008-07-08 | 2009-06-10 | 大连理工大学 | Multi-module assembled porous floating breakwater |
| CN202099780U (en) * | 2011-06-03 | 2012-01-04 | 福建吉轮海洋投资有限公司 | Floating wave elimination system |
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