CN104060573A - Method for quickly building dyke on coral island - Google Patents
Method for quickly building dyke on coral island Download PDFInfo
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- CN104060573A CN104060573A CN201410319608.0A CN201410319608A CN104060573A CN 104060573 A CN104060573 A CN 104060573A CN 201410319608 A CN201410319608 A CN 201410319608A CN 104060573 A CN104060573 A CN 104060573A
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Abstract
The invention provides a method for quickly building a dyke on a coral island, and belongs to coastal engineering building construction technologies. The method comprises the steps of terrain reconnaissance, site selection and positioning, foundation treatment, dyke building, sinking and moving observation and operation maintaining. The method for quickly building the dyke on the coral island is characterized by comprising the steps that a foundation is flattened, a canal is dug for irrigation, a gate wharf is mounted in a prefabricated mode, a dyke fixing component is mounted, hydraulic reclamation and pouring are conducted, a river is dug for protecting the dyke, and plants are planted on the inner side of an outer side revetment. The method for quickly building the dyke on the coral island has the advantages of adjusting measures to local conditions, drawing on local resources, and being high in speed, good in quality and high in efficiency. Positive significance is achieved on the aspects of improving dyke quality, improving building speed, improving safety and stability of the dyke and governing the environment.
Description
Technical field
The present invention relates to fill method, belong to coastal engineering building construction technology.
Background technology
Coral island is distributed in Tropical Ocean, is by a kind of coelenterate that live or dead---a kind of island that anthozoic reefs forms.By long-term accumulation of coral polyp remains, coral sand and broken shell, formed.Ground on coral island generally has three layers: the 1st layer: coral sand (the biogenic accumulation thing being formed by chips such as coral, shells) and coral mud (calcareous ooze that particulate coral fragment forms) cover coral reef top layer; The 2nd layer: coral reef top layer, for loose without cementing or weak cementing coral reef detrital deposit; The 3rd layer: for there is the coral rock of Diagenetic Change.
Due to generation developing environment and the above-mentioned mineral matter the Nomenclature Composition and Structure of Complexes feature in coral island, therefore cause thering is unique engineering properties: (1) high-moisture and high porosity, this is the key factor that determines its compressibilty and shear strength; (2) high osmosis, because such native transmission coefficient is large, water content is large, has remarkable impact to foundation strength; (3) high-compressibility, easily broken; (4) angle of internal friction is large, low shear strength; (5) high carbon acid calcium content, calcium carbonate content is up to 96%.Because coral island is generally located in warm band marine site, away from continent, physical features is smooth, and the natural building material such as sandy soil and stone lack.Due to coral island, enclose and cultivate low beach, off-lying sea, region location and be submerged when the high water mark, during low tide, appear, be directly subject to the invasion and attack of outer sea wave, institute's region absolute altitude generally below mean low-water, the waters of flow velocity, stormy waves and the depth of water, construction is disturbed large.
Above-mentioned adverse effect forms the sizable technical barrier of building dykes and dams, brings a series of difficulties to the enforcement of project of cultivation.How fast construction dykes and dams on coral island, are the problems in the urgent need to researching and solving in coastal engineering.
Summary of the invention
The present invention is in order to solve an above-mentioned difficult problem, the new technical scheme proposing on the basis of a large amount of early-stage Study.Invent a kind of on coral island the method for fast construction dykes and dams.
Technical solution of the present invention comprises terrain prospecting, site selecting and positioning, ground processing, dyke building, sinks and move observation, operation maintenance, it is characterized in that:
A. first, smooth foundation excavation irrigation channel: selected dike location on a certain isohypse in coral island, carry out smooth, excavate position to selected gate, harbour, processing, smooth, at the both sides of the off-lying sea of harbour side and gate excavation irrigation channel, for being installed, gate, harbour and dykes and dams structure get ready;
B. secondly, prefabricated installation gate harbour: the global facility transportation by driving of prefabricated gate harbour is located, sinks, installed to on-the-spot, and complete the construction of gate harbour;
C. moreover, fixedly dykes and dams member is installed: the dykes and dams member of batch production production is fixed on selected dike location, and is connected into one with gate between member;
D. then, river bank protection is dug in hydraulic reclamation perfusion: in dykes and dams off-lying sea side apart from beyond base of dam 30H, excavation coral sand and coral mud are toward hydraulic reclamation in island, simultaneously, to fixing and be connected in the dykes and dams member dykes and dams of one, pour into, and pour on dykes and dams member, at internal side of dyke or dam, beyond base of dam 20H, excavate bank protection river, the coral sand of excavation gained and the inner side that coral mud is stacked in dykes and dams, the height that H is dykes and dams;
E. last, outside bank protection inner side plantation: the off-lying sea side of dykes and dams adopts concrete geotechnical fabric bag bank protection, and by putting prefabricated wave breaker block, the earthwork of banking up of the inner side of dykes and dams, and plantation is applicable to local growing plants.
Described smooth basis, is that coral island is surveyed, and finds out on the basis of geology and geomorphology and meteorological hydrology stormy waves, adopts GPS marine positioning instrument to determine the address of dykes and dams, gate and harbour, and excavation displacement, based process and the grading carried out.Based process and grading are carried out in dike location selected on a certain isohypse, fill out paddy peak clipping.Address to gate harbour excavates, and the basal plane of excavation is greater than gate harbour base areas, and the floor elevation of gate harbour is lower than the water level of time of low water, and makes the bearing capacity of gate harbour ground reach designing requirement.Sunken uneven position can be poured into a mould with non-dispersible underwater concrete, and the ground that bearing capacity is inadequate should be done suitable processing.
Described excavation irrigation channel, is first in the off-lying sea of gate Wharf Base side, to excavate irrigation channel, and culvert water gate wharf member can be installed by smooth transportation by driving to sluice foundation.The width of irrigation channel should be greater than the width of gate harbour transportation by driving part, and the degree of depth of irrigation channel should be greater than the draft of gate harbour transportation by driving part.Off-lying sea is led in irrigation channel one end of gate both sides excavations, and the other end points to the island heart, progressively with bank protection river UNICOM, in construction in order to regulate the water-head inside and outside dike, after completion as the drainage channel in island.
Described gate transportation by driving is installed, and is to adopt culvert water gate floating transportation construction method of installation, and the global facility transportation by driving that prefabricated lock chamber, protection-apron, aileron are integrated is on-the-spot to lock site, through locating, sink, install, combining.After gate installation, can regulate and control the inside and outside water level of dykes and dams, when dykes and dams are installed, keep the unimpeded of gate irrigation channel, make the inside and outside water-head of dykes and dams drop to minimum.Described harbour transportation by driving is installed, and is to on-the-spot, according to the installation of harbour transportation by driving and supporting construction technology thereof, through locating, sink, install, combined construction by prefabricated box harbour base plate transportation by driving.Described box culvert is prefabricated is to using dull and stereotyped barge as operation platform, and Prefabricated Concrete box culvert, treats that concrete reaches prescribed strength thereon, dull and stereotyped barge is dragged to box culvert Xia Shui place, to water filling in barge cabin, it is sunk under the water, prefabricated box culvert is floated, then floating and sinking is on the basis of lock site or harbour.Time of low water pumps water in dull and stereotyped cabin, it is floated, as next prefabricated platform.
Described installation dykes and dams, are to adopt lightweight hard-shell dyke construction method, and the dykes and dams member that batch production is produced is fixed on selected dike location, and all dykes and dams members and gate join together, mutually pin down interdependence.Crest level should be greater than historical high water mark and add 1.0m.
The dykes and dams member that described batch production is produced is that to take element precast production, fabricated construction be the mode of production, with design standard, member component, construction machinery, turn to feature, can Integration Design, the whole industrial chain such as production, construction, realize the novel fill mode of the sustainable development of the energy-saving and environmental protection of dykes and dams member product, Life cycle value maximization.
Described lightweight hard-shell dyke construction method is a kind of ACTIVE CONTROL measure, is a kind of novel dam configuration, and conventional structural shape has: duricrust light structures, duricrust sheet pile structure, duricrust esting structure, duricrust drum structure.Design new dykes and dams construction method, realized the batch production of prefabricated dykes and dams member, solved on soft foundation the problem such as inhomogeneous settlement of ground, slippage in dyke construction process.It makes the shell of dykes and dams with high-strength material, or the shell of dykes and dams part, other discrete material is inserted in the position that is encased inside the easy depression of dykes and dams with light material then, thereby alleviates the weight at the easy depression of dykes and dams position, adjust dykes and dams balance, balanced dykes and dams loading, strengthens resistance to overturning, improves intensity, dykes and dams are had soft just, temper toughness with gentleness, be integrated with ground is molten, to eliminate differential settlement.As the king crab formula lightweight dyke of the feature structure of bionical king crab.
Described king crab formula lightweight dyke is to utilize bionics, and the Structural Feature Design of imitative king crab is constructed dykes and dams.King crab, also claims east king crab, arthropod, and the crust of cephalothorax is half-moon-shaped, and the crust of belly is hexagon, has six pairs of appendages, six pairs of sheet nectopods.Common in tidal-flat area.The shell that it is hard, the structure of arch form, the complete bodily form, if volt on beach, even if large stormy waves tide is not moved it yet again, more violent shark all how not it, can not mire down in mud because of the weakness of tidal land yet.And the dykes and dams of soft foundation are just needing there is structure and characteristics like this.Its essential characteristic comprises lightweight dam body, hard structure dam shell, isolation antiseepage, deeply inserts base of dam, is linked to be integral body.With high-strength material, make the shell of dykes and dams or the shell of certain part.With the yielding position of iliacus materials for support dykes and dams, then insert other packing material, in soft foundation, adopt light weight padding to be located at the position of easy depression slippage, thereby alleviate the weight at the easy depression of dykes and dams position, adjust dykes and dams balance, with balanced dykes and dams loading, strengthen resistance to overturning.Make it to produce loss of weight, reinforcement, antiseepage, isolation, effect that heap is high, improve fill speed and embankment safety.
The light weight padding of the member of described king crab formula lightweight dyke adopts selects foamed plastics, and batch production can adopt physics to send out the method for ripple and chemical blowing while producing and the member of duricrust is combined into one.As foaming such as polystyrene, polyethylene, polypropylene, for improving intensity, can doping.These material coefficient of foaming large (can reach 80 times of left and right), low, the lightweight (0.2-0.4kN/m3 of price
), intensity high (compressive resistance 0.35Mpa, flexural strength 0.3-0.5Mpa), permeability resistance good (water absorption rate 0.0-0.2g/100cm2), chemical stability is good.The inside of imbedding dykes and dams, does not disappear, not aging, indeformable.
Described hydraulic reclamation, is to adopt pipeline fluid power sandstone carrying method, and at dykes and dams off-lying sea side excavation coral sand and coral mud, to hydraulic reclamation in dykes and dams, the hydraulic reclamation elevation in island should be greater than historical highest water level, and the sedimentation of hydraulic reclamation is reserved should be greater than 20%.At internal side of dyke or dam apart from excavating bank protection river beyond base of dam 20H, bank protection He Yu irrigation channel UNICOM, construction neutralization be completed after as the drainage system in island.In the coral sand of excavation bank protection river and irrigation channel gained and coral mud duricrust be stacked in internal side of dyke or dam.
Described perfusion, is to pour into coral sand to fixing and be connected in the dykes and dams member of one, while the dykes and dams member that is fixedly connected pours into, improves layer by layer, forms the backbone part of dykes and dams; In the dykes and dams member that is fixedly connected, light material is filled to the position of easy depression.Increase and widen elevation and the width that dykes and dams periphery reaches design; The excavated volume in bank protection river can be decided by the groundwater increment of dykes and dams.
Described dykes and dams member is linked to be integral body, is to adopt the methods such as securing member, tongue and groove, male and female seam, overlapping, buckle or welding, and whole dykes and dams member and gate harbour thereof are joined together.Support each other, rely on each other, check and balance, support mutually.Because for coral sand and coral mud, even if large block more also or discrete material, is necessary them to join together.Form the globality of dyke (dam).
Described outside bank protection is to lay geotechnical fabric bag in the off-lying sea of dykes and dams side, and inside concrete perfusion, and at the bottom of slope, by putting, comprises four pin pieces, turns round " work " block, turns round the prefabricated block of " king " block, for the unrestrained bank protection that disappears.
Described inner side plantation is in the inner side of dykes and dams, bank up coral sand and coral mud, and comprises Value of Spartina Anglica, mangrove, lapacho wood, Hai Sang, the salt-tolerant plant in red eggplant winter and comprise that coco, numb maple paulownia, seashore paulownia, honeysuckle flower tree, goat's horn are set, the applicable local growing plants of Scaevola aemula in inner side and the plantation of both sides, bank protection river of dykes and dams.
Good effect of the present invention:
Owing to adopting transportation by driving that the method for gate harbour and prefabricated dykes and dams member is installed, need not build cofferdam, without drainage of foundation pit, site operation is convenient, cost saving, construction speed is fast.Box culvert is integral prefabricated, and rigidity is large, intensity is high, low to the requirement for bearing capacity of ground.On-site construction time is short, and the construction period is subject to the impact of typhoon little, and quality and duration can guarantee.Using dull and stereotyped barge as prefabricated construction platform, effectively solve the problem that there is no prefabricated place.
Owing to adopting lightweight hard-shell dyke construction method, the batch production of dykes and dams member is produced, the scene of transporting to is built fixing, the architectural characteristic of bionical king crab, it makes the shell of dykes and dams with high-strength material, or the shell of dykes and dams part, other discrete material is inserted in the position that is encased inside the easy depression of dykes and dams with light material then, thereby alleviates the weight at the easy depression of dykes and dams position, adjust dykes and dams balance, balanced dykes and dams loading, strengthens resistance to overturning, improves intensity, dykes and dams are had soft just, temper toughness with gentleness, be integrated with ground is molten, to eliminate differential settlement.Solve the loose problem of material and the problem of dykes and dams fast construction, also solved the problem of inhomogeneous settlement of ground, slippage.
Owing to adopting pipeline fluid power to carry perfusion hydraulic reclamation method, make full use of local coral sand as constructional materials, effectively solve the problem that coral island constructional materials lacks.And coral sand proportion is little, draining is fast, very applicable employing pipeline fluid power carrying method.The efficient formation fast of elevation in island.
Due to bank protection He Yu irrigation channel UNICOM, form the drainage system in island, in construction, can discharge in time blast priming charge, regulate the inside and outside water-head of dike, after completion as bank protection health water system and drainage channel.
Owing to adopting marine GPS position indicator and Based Intelligent Control construction equipment, real-time display position and complete operation on industrial PC screen, and have a set of offshore construction technical matters.Have location accurate, precision is high, and error is little, the measured feature of matter.
Owing to adopting outside bank protection and inner side plantation, not only disappear unrestrained bank protection and solid sand protection effect are remarkable, and also play good effect to improving islands ecosystems.
The specific embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1: certain Petroleum Exploration Engineering---the drilling platform in the oil field on coral island.Working platform, in intertidal waters, is submerged when high water mark, during low tide, appears, and is directly subject to the invasion and attack of off-lying sea stormy waves, flow velocity, and drilling operation disturbs large, cannot normally work.Ground on coral island is mainly comprised of coral chip and other marine organisms chips, and long-term seawater steeps clearly coral sand and has that grain density is large, water content is high, porosity is high, dry density is less, the more high characteristic of compressibilty.High and high porosity.According to the actual conditions of ground and job site, after terrain prospecting, research and design, feasibility analysis, checking computations demonstration, adopt quick fill method on coral island.
First, on the island
isohypse on be decided to be dike location, at natural cheuch, place is decided to be position of strobe, in drinking water, compared with depths, is decided to be the position of harbour, excavates, processing, smooth, at the both sides of the off-lying sea of harbour side and gate excavation irrigation channel; Meanwhile, on dull and stereotyped barge, the transportation by driving part of prefabricated gate harbour.
Secondly, dull and stereotyped barge is dragged to Xia Shui place, to water filling in barge cabin, it is sunk under the water, prefabricated transportation by driving part is floated, depart from dull and stereotyped barge, then when high water mark, with tugboat, transportation by driving part is moved on on the lock site of excavation or the basis of harbour, through locating, sink, installing, build superstructure, the transportation by driving formula gate that builds up 2m * 3m diplopore is the fixed quay of 24m with length.
Then, on one side with high-power pipeline fluid power sandstone conveying boat, from hydraulic reclamation coral sand in the side direction island, off-lying sea of dykes and dams, on one side the king crab formula lightweight hard-shell dyke member in factory process is in advance fixed on dike location, between member, with securing member, be connected into one and connect with gate; Meanwhile, to fixing and be connected in the dykes and dams of one, pour into coral sand.Duricrust material adopts bamboo offset plate, and light material adopts that waste polystyrene is plastic foamed to be made.
Finally, in island, hydraulic reclamation coral sand arrives
elevation, dykes and dams have reached
during elevation, in the off-lying sea of dykes and dams side, adopt concrete geotechnical fabric bag bank protection, and with loop wheel machine by putting prefabricated turning round " work " block body; Meanwhile, bank protection river is excavated in the inner side of dykes and dams beyond base of dam 120m, and the coral sand of excavation gained is stacked in the inner side of dykes and dams, and plants goat's horn tree, Scaevola aemula plant.
Embodiment 2: the quick fill of certain coral island engine request, soil layer and static loading test are reconnoitred, divided to the dike line of this project and the ground of harbour by routine, coral rock layer is uneven, and above has the loose without cementing or weak cementing coral reef detrital deposit top layer of 0-16m, belongs to heterogeneous foundation.And water content is high, void ratio is large, and bearing capacity and shear strength are low, and highly sensitive feature, the in the situation that of high-bearing capacity, is easily accompanied by inhomogeneities, is typical heterogeneous body soft foundation.
The method adopting is substantially the same manner as Example 1, and difference is: (1) prefabricated fitting-out quay adopts old container as the monocoque of harbour, the single size of container: 12200mm * 2440mm * 2440mm.Add in container in man-hour and adopt angle steel reinforcement of weld, to prevent causing container distortion due to the effect of lateral pressure.Container back welding has toe pin, deeply inserts ground.In container, be provided with hollow structure, to reduce in right amount the load capacity with balanced ground.After location and installation, more a plurality of containers are welded into one, make dykes and dams have globality.Interior filling coral sand concrete.(2) prefabricated installation gate adopts Corrugated Arch Steel Sheet monocoque, and in steel plate duricrust, fills the coral sand concrete that 0.5m is thick.Each positioning parts is welded into one after installing, and builds up 5m * 5m tri-hole sluice.Strengthen flood carrying capacity, met flood fighting water drainage requirement.(3) dykes and dams member adopts duricrust sheet pile structure, and the dykes and dams member being prefabricated in the factory is transported to job site, is fixed on dike location, and fastening between member, is connected into one.Not only have tough and tensile shell mechanism, have in just softly, temper toughness with gentleness, can adapt to heavy in the construction period and move variation, and the duration is short, speed is fast, effective.Effectively solved uneven subsidence after work.After completion, be provided with sedimentation deformation observation point, carried out sedimentation deformation measurement, after 30 days without obvious sedimentation deformation.Operational excellence after coming into operation.
On coral island of the present invention, the application of fill method in a plurality of engineerings fast, has solved engineering roadblock.Demonstrate its unique advantage and irreplaceability thereof.From above-described embodiment, can be summarized as following features:
(1) accelerated construction speed.Due to the dykes and dams member that adopts batch production to produce and prefabricated transportation by driving part, adopt loop wheel machine by putting prefabricated wave breaker block, adopt high-power pipeline fluid power sandstone conveying equipment hydraulic reclamation, be conducive to mechanization, high strength, extensive construction, so greatly shortened the duration of field operation, improved rate of progress of the construction.
(2) improved the security and stability of dykes and dams.Owing to adopting lightweight hard-shell dyke structure, the dark base of dam of inserting is fixed on dike location, dam configuration and gate securing member are linked to be integral body, increase slope ratio, have reduced idle side's amount of dam body, fundamentally solved the problem of foundation strength deficiency, not high problem is piled in the earthwork, has adjusted the stress balance of dykes and dams, has avoided differential settlement and slippage, improve holistic arrestment slippage stabilization, guaranteed the safety of dykes and dams.Also there is good anti-seismic performance.
(3) solved the problem of material shortage on coral island.Due to doing packing material in coral sand perfusion dykes and dams, with coral sand hydraulic reclamation, improve the elevation of island face, with coral sand concrete, do prefabricated component, with coral sand concrete, add geotechnical fabric bag bank protection.Answer ground suiting measures to different conditions, solved the problem of material shortage on coral island.
(4) eliminated white pollution.The pollution of discarded plastics is headache problems in environmental improvement, is called " white pollution ".Owing to adopting discarded plastics as foamed light material.There is the features such as price is low, lightweight, intensity is high, permeability resistance good, chemical stability is good, high, the antibacterial antibiont ability of the ageing-resistant ability of corrosion resistant is strong, as long as cover, well just have good durability.Imbed the inside of dykes and dams, concentrate and imbed under dykes and dams, do not disappear, not aging, indeformable.With the passage of time sinking to the low layer of dykes and dams, is the basis of dykes and dams loyalty, is again the good method of plastics pollution.
(5) administered environment on coral island.Due to dykes and dams and both sides, bank protection river, on the sandy beach of corallite sand ground or thin ridge, plant salt-tolerant plant and be applicable to local growing plants.Within several years, growth is rapidly, close and numerous afterwards, covers whole island, for the wave that disappears, shortly become silted up, windproof, solid sand and bank protection, to the sandy beach on protection island, improve islands ecosystems and also play good effect.
In a word, the present invention have should ground suiting measures to different conditions, gather materials on the spot, speed is fast, quality good, efficiency is high feature.And quality, quickening building speed, the promotion embankment safety of dyke stablized, improvement environment has positive meaning to improving.
Claims (9)
1. quick fill method on coral island, comprises terrain prospecting, site selecting and positioning, ground processing, dyke building, sinks and move observation, operation maintenance, it is characterized in that:
A. first, smooth foundation excavation irrigation channel: selected dike location on a certain isohypse in coral island, carry out smooth, excavate position to selected gate, harbour, processing, smooth, at the both sides of the off-lying sea of harbour side and gate excavation irrigation channel, for being installed, gate, harbour and dykes and dams structure get ready;
B. secondly, prefabricated installation gate harbour: the global facility transportation by driving of prefabricated gate harbour is located, sinks, installed to on-the-spot, and complete the construction of gate harbour;
C. moreover, fixedly dykes and dams member is installed: prefabricated dykes and dams member is fixed on selected dike location, and is connected into one with gate between member;
D. then, river bank protection is dug in hydraulic reclamation perfusion: in dykes and dams off-lying sea side apart from beyond base of dam 30H, excavation coral sand and coral mud are toward hydraulic reclamation in island, simultaneously, to fixing and be connected in the dykes and dams member dykes and dams of one, pour into, and pour on dykes and dams member, at internal side of dyke or dam, beyond base of dam 20H, excavate bank protection river, the coral sand of excavation gained and the inner side that coral mud is stacked in dykes and dams, the height that H is dykes and dams;
E. last, outside bank protection inner side plantation: the off-lying sea side of dykes and dams adopts concrete geotechnical fabric bag bank protection, and by putting prefabricated wave breaker block, the earthwork of banking up of the inner side of dykes and dams, and plantation is applicable to local growing plants.
2. quick fill method on coral island as claimed in claim 1, it is characterized in that: the address to gate harbour excavates, the basal plane of excavation is greater than gate harbour base areas, and the floor elevation of gate harbour is lower than the water level of time of low water, and makes the bearing capacity of gate harbour ground reach designing requirement.
3. quick fill method on coral island as claimed in claim 1, is characterized in that: the width of irrigation channel should be greater than the width of gate harbour transportation by driving part, and the degree of depth of irrigation channel should be greater than the draft of gate harbour transportation by driving part.
4. quick fill method on coral island as claimed in claim 1, is characterized in that: prefabricated dykes and dams member is fixed on selected dike location, and all dykes and dams members and gate join together, mutually pin down interdependence.
5. quick fill method on coral island as claimed in claim 1, is characterized in that: crest level should be greater than historical high water mark and add 1.0m.
6. quick fill method on coral island as claimed in claim 1, is characterized in that: the hydraulic reclamation elevation in island should be greater than historical highest water level, and the sedimentation of hydraulic reclamation is reserved should be greater than 20%.
7. quick fill method on coral island as claimed in claim 1, is characterized in that: the fixedly technical method of dykes and dams member is installed, is comprised lightweight dam body, hard structure dam shell, isolation antiseepage, deeply insert base of dam, be linked to be integral body.
8. quick fill method on coral island as claimed in claim 1, it is characterized in that: outside bank protection is to lay geotechnical fabric bag in the off-lying sea of dykes and dams side, and inside concrete perfusion, and at the bottom of slope, by putting, comprise four pin pieces, turn round " work " block, turn round the prefabricated block of " king " block, for the unrestrained bank protection that disappears.
9. quick fill method on coral island as claimed in claim 1, it is characterized in that: inner side plantation is in the inner side of dykes and dams, bank up coral sand and coral mud, and comprise Value of Spartina Anglica, mangrove, lapacho wood, Hai Sang, the salt-tolerant plant in red eggplant winter and comprise that coco, numb maple paulownia, seashore paulownia, honeysuckle flower tree, goat's horn are set, the applicable local growing plants of Scaevola aemula in inner side and the plantation of both sides, bank protection river of dykes and dams.
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| CN107574829A (en) * | 2017-08-28 | 2018-01-12 | 中交广州航道局有限公司 | A kind of floating type Temporary Cofferdam and its quick fill method |
| CN107973494A (en) * | 2017-12-29 | 2018-05-01 | 中国水利水电科学研究院 | A kind of stream entering lake purification of water quality and water resource system for recycling |
| CN109778786A (en) * | 2019-03-02 | 2019-05-21 | 何富荣 | A kind of no bank of stone dam and the dam construction building method |
| CN113474064A (en) * | 2018-12-26 | 2021-10-01 | 水晶潟湖科技股份有限公司 | Construction method for constructing tropical-style swimming lagoons with sand beaches in empty or abandoned places |
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| CN109778786A (en) * | 2019-03-02 | 2019-05-21 | 何富荣 | A kind of no bank of stone dam and the dam construction building method |
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