CN109577272A - Chiltern water front restorative procedure - Google Patents
Chiltern water front restorative procedure Download PDFInfo
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- CN109577272A CN109577272A CN201811567129.5A CN201811567129A CN109577272A CN 109577272 A CN109577272 A CN 109577272A CN 201811567129 A CN201811567129 A CN 201811567129A CN 109577272 A CN109577272 A CN 109577272A
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- sand
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- husky
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
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Abstract
The present invention provides a kind of chiltern water front restorative procedures, are related to seashore recovery technique field, and chiltern water front restorative procedure provided by the invention, which includes the steps of determining that, to be mended grains of sand diameter, sandy beach mean inclination, beach berm elevation and mend husky thickness；It calculates and mends husky amount；It carries out mending sand according to husky amount is mended, chiltern water front restorative procedure provided by the invention alleviates the technical issues of existing chiltern water front reparation is difficult to avoid that sandy beach argillation or is etched, water front after capable of ensuring to repair is capable of forming stable ecologic structure, realize sandy beach self-maintaining balance, it avoids sandy beach argillation or is etched, and it carries out mending husky operation according to required benefit sand amount, without repairing of repeatedly constructing, be conducive to the formation of nature chiltern water front, and can be improved the lasting stability of chiltern water front, reduce water front maintenance cost.
Description
Technical field
The present invention relates to seashore recovery technique fields, more particularly, to a kind of chiltern water front restorative procedure.
Background technique
Since the activities such as sand are adopted in sea area hard engineering construction, Coastal Zone Development and strand, so that locating for the chiltern water front of part
Hydrodynamic environment change, blocked land-sea contact and mass exchange or reduce Sha Yuan supply, lead to chiltern water front
There is mud or suffer erosion, chiltern water front gradually loses original water front attribute, serious to can lead to original chiltern water front
It completely disappears.According to incompletely statistics, there is nearly 70% sand coast line in China by different degrees of erosion and damage, some sand
Matter water front causes water front constantly to retreat due to corrosion function, and loses the attribute of chiltern water front completely.
Existing chiltern water front recovery technique, it is more blindly to be repaired using mending husky means and carry out sandy beach, using sandy beach width as applying
Work index keeps the attribute of chiltern water front by maintaining certain sandy beach width.Over time, in hydrodynamic condition
Under the premise of unchanged, chiltern water front is difficult to form stable water front, and the chiltern water front after mending sand still will appear impaired problem, such as
Sandy beach argillation or erosion；In order to keep the stability of such chiltern water front, need periodically largely to mend sand, later maintenance cost is non-
Chang Gao.
Summary of the invention
The purpose of the present invention is to provide a kind of chiltern water front restorative procedures, are difficult to keep away to alleviate existing chiltern water front reparation
The technical issues of exempting from sandy beach argillation or being etched.
In a first aspect, chiltern water front restorative procedure provided by the invention includes the following steps:
It determines and mends grains of sand diameter, sandy beach mean inclination, beach berm elevation and mend husky thickness；
It calculates and mends husky amount；
It carries out mending sand according to husky amount is mended.
With reference to first aspect, the present invention provides the first possible embodiments of first aspect, wherein determines and mends sand
The step of partial size includes:
Calculate the quasi- average grain diameter for repairing water front deposit；
It is mended in husky particle size range default, selection is greater than the particle size values of the quasi- average grain diameter for repairing water front deposit as benefit
Grains of sand diameter.
The possible embodiment of with reference to first aspect the first, second the present invention provides first aspect are possible
Embodiment, wherein the step of calculating the quasi- average grain diameter for repairing water front deposit include:
In the range of quasi- reparation water front, the sampling of multiple groups deposit, deposit sampling are carried out along water front extending direction interval
For from ocean, landwards direction extends and be more than or equal to 10 isometric deposits and sample, and make depth selection between 1.5m~
In the range of 2.5m；
Calculate the average grain diameter of deposit sample.
With reference to first aspect, the present invention provides the third possible embodiments of first aspect, wherein determines beach berm
The step of elevation includes calculating beach berm elevation: H according to the following formulat=bH, wherein HtFor beach berm elevation, unit m；H is 2
Wave value at year~5 years general storm tidal flat feet, unit m；B is product coefficient, is chosen according to grains of sand diameter is mended；
As D=7mm, b=1.68；
As D=3mm, b=1.78；
As D=0.5mm, b=1.8；Wherein, D is to mend grains of sand diameter.
With reference to first aspect, the present invention provides the 4th kind of possible embodiments of first aspect, wherein determines sandy beach
The step of mean inclination includes calculating sandy beach mean inclination according to the following formula:Wherein, K is
Constant, when quasi- reparation water front is erosion profile, K 0.3；When quasi- reparation water front is to become silted up to rise by type profile, K 0.5；α is sand
Beach mean inclination；ρ is to mend sand grain sinking speed, and unit is meter per second；HwFor wave effective height, unit is rice；L is wave
Wavelength, unit are rice；T is wave period, and unit is the second；G is acceleration of gravity, unit m/s2；
Alternatively, the step of determining sandy beach mean inclination include: according to mending grains of sand diameter and the quasi- hydrodynamic force situation for repairing water front,
Selected sandy beach mean inclination.
With reference to first aspect, the present invention provides the 5th kind of possible embodiments of first aspect, wherein determines and mends sand
The step of thickness includes:
The target depth of water: h is calculated according to the following formula1=Axn, wherein h1For the target area depth of water, unit is rice；X is
At a distance from water front, unit is rice for target area；The value of n is that 2/3, A is calculated by following formula: ρ=14D1.1, A=
0.067·ρ0.44, wherein D is to mend grains of sand diameter, and unit is millimeter；ρ is to mend sand grain sinking speed, and unit is meter per second；A is sea
Beach section scale coefficient；
It calculates according to the following formula and mends husky thickness: h=h2-h1, wherein h2The practical depth of water in water front region is repaired to be quasi-, h is
Mend husky thickness.
With reference to first aspect, the present invention provides the 6th kind of possible embodiments of first aspect, wherein determines and mends sand
Partial size, sandy beach mean inclination, beach berm elevation and the step of mending husky thickness include:
It chooses to mark seashore；
From ocean, landwards direction extends, and multi-point is every sampling measuring and calculating to the morphological parameters of mark seashore；
It is selected according to the morphological parameters analogy to mark seashore and mends grains of sand diameter, sandy beach mean inclination, beach berm elevation and mend husky thick
Degree.
With reference to first aspect, the present invention provides the 7th kind of possible embodiments of first aspect, wherein mends husky step
Suddenly include:
Be laid with that bed course is husky, in bed course sand: the gross mass accounting of quartz and feldspar is greater than 92%, shale amount accounting less than 2%,
Particle accounting of the partial size less than 1mm is less than 10%, and the particle size range of bed course sand is 1.2mm~2mm；
It is laid with surface layer sand, the gross mass accounting of quartz and feldspar is greater than 96% in the sand of surface layer, and shale amount accounting is less than
0.2%, shell quality accounting is less than 1%, and the partial size of surface layer sand is less than or equal to 0.8mm.
With reference to first aspect, the present invention provides the 8th kind of possible embodiments of first aspect, wherein is mending sand
The step of fixing the sand, fixing the sand after step includes: that sand-fixation plant is planted at beach rampart more than high-tide level.
The 8th kind of possible embodiment with reference to first aspect, the 9th kind the present invention provides first aspect are possible
Embodiment, wherein plantation sand-fixation plant the step of include:
Interval digs the first multiple plant hole, makes the spacing range of the first adjacent plant hole of extending direction along the coastline
10cm~30cm is 40cm~50cm from the spacing range by the first adjacent plant hole of the lateral land side direction in sea, and to first
Planting site climbs class plant in kind plant hole；
Interval digs multiple second of plant hole, and second of plant hole is made to be located at two for leaning on the lateral land side direction in sea adjacent certainly
Between the first plant hole, the spacing range of adjacent second of the plant hole of extending direction is 20cm~30cm along the coastline, and to second
The strong root system plant of plantation in kind plant hole.
Present invention offers following the utility model has the advantages that mending grains of sand diameter, sandy beach mean inclination, beach berm elevation and benefit sand using determining
Thickness calculates husky amount of mending, and carries out mending husky mode according to husky amount is mended, and mends grains of sand diameter, sandy beach mean inclination, beach berm by determining
Elevation and the husky thickness of benefit, so that it is guaranteed that the water front after repairing is capable of forming stable ecologic structure, realization sandy beach self-maintaining is flat
Weighing apparatus, avoids sandy beach argillation or is etched, and carry out mending husky operation according to required benefit sand amount, without repeatedly construction repairing, energy
The lasting stability for enough improving chiltern water front, reduces water front maintenance cost.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
Technical solution in order to illustrate more clearly of the specific embodiment of the invention or in the related technology, below will be to specific
Attached drawing needed in embodiment or description of Related Art is briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow diagram of chiltern water front restorative procedure provided in an embodiment of the present invention；
Fig. 2 is the sample log position view of chiltern water front restorative procedure provided in an embodiment of the present invention；
Fig. 3 is the balanced cross section schematic diagram of chiltern water front restorative procedure provided in an embodiment of the present invention；
Fig. 4 is the signal of the first plant hole and second of plant hole of chiltern water front restorative procedure provided in an embodiment of the present invention
Figure.
Icon: 1- sample log；2- low tide water level line；3- high water line；The current water front bottom surface 4-；5- target water front bottom
Face；Zero meter of isobath of 6-；7- mean high tide horizontal plane；The first plant hole of 8-；Second of plant hole of 9-.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.Physical quantity in formula, such as without individually
Mark, it is thus understood that the fundamental quantity of International System of Units basic unit, alternatively, passing through the number such as multiplication and division, differential or integral by fundamental quantity
Derived derived quantity is calculated in student movement.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment one
As shown in Figure 1, chiltern water front restorative procedure provided in an embodiment of the present invention, following steps:
It determines and mends grains of sand diameter, sandy beach mean inclination, beach berm elevation and mend husky thickness；
It calculates and mends husky amount；
It carries out mending sand according to husky amount is mended.
Specifically, by investigating impaired chiltern water front surrounding waters water environment and depositional environment, the grains of sand are mended in measuring and calculating
Diameter, sandy beach mean inclination, beach berm elevation and the husky thickness of benefit, to know that the relevant parameter of chiltern water front is stablized in the sea area.And according to
Mend grains of sand diameter, sandy beach mean inclination, beach berm elevation and mend husky THICKNESS CALCULATION and mend husky amount, so as in construction by a certain amount of grit
It is padded to quasi- reparation water front, forms coastal line structure, without repairing repeatedly, avoids long period from mending grit caused by sand and is lost.
In addition, sandy beach mean inclination, beach berm elevation and the husky thickness of benefit combine, the formation of chiltern water front can be made to avoid wave erosion and dirt
The rock-steady structure of mud siltation improves the lasting stability of chiltern water front so as to avoid sandy beach argillation or be etched.
In embodiments of the present invention, determine that the step of mending grains of sand diameter includes: to calculate the quasi- average grain for repairing water front deposit
Diameter；It is mended in husky particle size range default, selection is greater than the particle size values of the quasi- average grain diameter for repairing water front deposit as the benefit grains of sand
Diameter.It under gravity and alluvion effect, is deposited as time goes by with grit, the partial size of grit will be gradually reduced.
Therefore when mending husky, partial size should be chosen and carry out mending sand slightly larger than the grit of deposit average grain diameter.
Further, the step of average grain diameter of the quasi- reparation water front deposit of calculating includes:
In the range of quasi- reparation water front, the sampling of multiple groups deposit, deposit sampling are carried out along water front extending direction interval
For from ocean, landwards direction extends and be more than or equal to 10 isometric deposits and sample, and make depth selection between 1.5m~
In the range of 2.5m；Calculate the average grain diameter of deposit sample.
As shown in Fig. 2, being located at the sample log 1 of vertical direction from ocean multiple sample point lines that landwards direction extends
It is interior, multiple sample logs 1 are equipped at intervals with along water front extending direction, 1 spacing distance of adjacent samples section is 500m.From ocean to land
Place is at least distributed in beach berm, climax band, middle damp band and low tide band to the multiple sample points for extending distribution.Coastal area of china chiltern bank
Line deposit average grain diameter can specifically be estimated mostly between 0.28mm~2.64mm according to sample.To ensure sample standard
Really, each sample point sample volume is equal, according to the ratio of partial size deposit each in sample, calculates the average grain diameter of deposit, ginseng
According to the average grain diameter of deposit, partial size is selected to carry out mending sand slightly larger than the Cast-in-situ Piles in Sand-filling of the average grain diameter of deposit, to ensure sandy beach
Stablize；For example, selecting the Cast-in-situ Piles in Sand-filling of partial size 0.5mm big compared with the average grain diameter of deposit as benefit sand plain material.
As shown in figure 3, the step of determining beach berm elevation includes calculating beach berm elevation: H according to the following formulat=bH,
In, HtFor beach berm elevation, i.e., target water front bottom surface 5 away from ocean one end and zero meter of isobath 6 in the vertical direction at a distance from,
Unit is m；H is wave value at 2 years~5 years general storm tidal flat feet, and unit m is known by coastal observation data；B is product
Coefficient is chosen according to grains of sand diameter is mended；As D=7mm, b=1.68；As D=3mm, b=1.78；As D=0.5mm, b=
1.8；When mending grains of sand diameter between 3mm~7mm alternatively, mending grains of sand diameter between 1.78mm~3mm, alternatively, benefit grains of sand diameter
When less than 1.78cm, it may be assumed that the inversely proportional relationship of b and D is estimated；Wherein, D is to mend grains of sand diameter.Under normal conditions, beach berm
Elevation is 3m~5m.Beach berm width is added protection back beach minimum value by 5 years or 10 years one chance storm tide erosion amounts and is estimated,
General value is 20m~30m.
The step of determining sandy beach mean inclination includes calculating sandy beach mean inclination according to the following formula:Wherein, K is constant, when quasi- reparation water front is erosion profile, K 0.3；Bank is repaired when quasi-
Line is K 0.5 when becoming silted up to rise by type profile；α is sandy beach mean inclination；ρ is to mend sand grain sinking speed, and unit is meter per second；HwFor
Wave effective height, unit are rice；L is wave wavelength, and unit is rice；T is wave period, and unit is the second；G is gravity acceleration
Degree, unit m/s2；
Alternatively, the step of determining sandy beach mean inclination include: according to mending grains of sand diameter and the quasi- hydrodynamic force situation for repairing water front,
Selected sandy beach mean inclination.
Specifically, collect chiltern water front and stablize sea area hydrodynamic force, sediment grain size and gradient situation, by sediment grain size plus
Upper preset increments are as grains of sand diameter is mended, to formulate sandy beach mean inclination, hydrodynamic force and the table of comparisons for mending grains of sand diameter.
Investigation can before mending sand grain sinking speed, wave effective height, wave wavelength and wave period by construction
When measuring, using formulaIt calculates and determines sandy beach mean inclination；It, can basis when data volume is less
It mends grains of sand diameter and hydrodynamic force situation tables look-up and chooses sandy beach mean inclination.
As shown in figure 3, determining that the step of mending husky thickness includes: to calculate the target depth of water: h according to the following formula1=Axn,
In, h1For the target area depth of water, i.e. distance of the target water front bottom surface 5 to mean high tide horizontal plane 7 in the vertical direction, unit
For rice；X is target area at a distance from water front, i.e., lateral extra large side of pulling in shore certainly, the horizontal distance of target area and low tide coastline,
Unit is rice；The value of n is that 2/3, A is calculated by following formula: ρ=14D1.1, A=0.067 ρ0.44, wherein D is to mend sand
Partial size, unit are millimeter；ρ is to mend sand grain sinking speed, and unit is meter per second；A is beach profile scale coefficient；According to as follows
Formula, which calculates, mends husky thickness: h=h2-h1, wherein h2Repair the practical depth of water in water front region to be quasi-, i.e., current water front bottom surface 4 with it is flat
The distance of neap high water position horizontal plane 7 in the vertical direction, h are to mend husky thickness.
Further, sandy beach width should increase as far as possible, on the one hand be conducive to the wave that disappears, to safeguard that sandy beach is stablized；It on the other hand can
Ensure that the enough exposure time uses for playing.It is quasi- to repair depending on beach face form to extra large side sandy beach width, mending for chiltern water front
Grains of sand diameter, local hydrodynamics condition and the husky amount of benefit etc..The sand amount of throwing is more, and the sandy beach width that can be obtained is wider,
This there is the equalization point problem that chiltern water front repairs regional sandy beach maintenance cost and tour performance.Rule of thumb, when sandy beach is wide
When degree is between 21.5m~37m, maintenance cost and tour performance opposite can realize win-win.
In addition, determining that the step of mending grains of sand diameter, sandy beach mean inclination, beach berm elevation and mending husky thickness includes: to choose to mark
Seashore；From ocean, landwards direction extends, and multi-point is every sampling measuring and calculating to the morphological parameters of mark seashore；According to the shape to mark seashore
State parameter analogy is selected to mend grains of sand diameter, sandy beach mean inclination, beach berm elevation and mends husky thickness.Specifically, selection repairs sand with quasi-
Matter water front dynamic condition and the similar adjacent coasts of nearshore deposit feature carry out analogy, repair area's seashore because of various natures and people
Erosion damage or disappearance occur for class factor, and the seabeach for closing on analogy bank section or seashore saves preferably or in dynamic equilibrium shape
State, by using for reference the seabeach form to mark seashore, to design maintenance beach profile.Specific step is as follows:
Offshore dynamic environment condition, Types of Coastal Morphology, the seabeach trend, beach profile type of adjacent bank section are analyzed comprehensively
And Sediment Characteristics；
Based on above-mentioned analysis, selection and reparation area's seashore are most like to mark seashore；
In the middle part of the seabeach to mark seashore, two sides or the place of being changed significantly lay measuring frequency section and carry out periodicity seabeach form
Measurement, measurement range includes the region of neap line to mean height of the tide tide line or more, to determine in the form of the beach face of seabeach；
According to the beach face morphological feature to mark seashore, beach profile design is carried out to quasi- reparation water front, determines target water front
The position of bottom surface 5, i.e., it is selected to mend grains of sand diameter, sandy beach mean inclination, beach berm elevation and mend husky thickness.
Further, it calculates according to the following formula and mends husky amount: V=L1·L2·hb, wherein V is to mend husky volume, and unit is
Cubic meter；L1For sandy beach width, unit is rice；L2For extending direction along the coastline, intend the extended distance for repairing water front, i.e., it is quasi- to repair
The length of bank reinstatement line, unit are rice；hbTo mend husky thickness average value, it can be averaged and be known by the benefit sand thickness repeatedly calculated.
Further, mending husky step includes: to be laid with bed course sand, and in bed course sand: the gross mass accounting of quartz and feldspar is big
In 92%, shale amount accounting is less than 2%, and particle accounting of the partial size less than 1mm is less than 10%, and the particle size range of bed course sand is
1.2mm~2mm；Laying surface layer is husky, in the sand of surface layer: greater than 96%, shale amount accounting is less than the gross mass accounting of quartz and feldspar
0.2%, shell quality accounting is less than 1%, and the partial size of surface layer sand is less than or equal to 0.8mm.Wherein, bed course it is husky with a thickness of
100cm~150cm, surface layer it is husky with a thickness of 50cm~70cm, and 2 times with a thickness of surface layer sand thickness of bed course sand~3 times,
To improve the stability at sandy beach and the mellowness on sandy beach surface layer, infiltration and absorption of the seabeach to wave energy are enhanced, simultaneously
Infiltration energy dissipating advantageously reduces wave run-up, plays the role of soft shore protection, can effectively mitigate the erosion of chiltern water front.
Further, the step of fixing the sand, fix the sand after mending husky step includes: at the beach rampart more than high-tide level
Plant sand-fixation plant.Beach rampart to land side plant sand-fixation plant, southern area chiltern water front selection plantation thick boisiana, cogongrass, cactus,
The plants such as manilagrass, herba panici repentics, Vitex rotundifolia, Egyptian grass, Bermuda grass, horse-tail, the selection kind of northern area chiltern water front
Plant sand brill sedge, glehnia littoralis, denticulate ixeris herb of crawling, renal lobe ivy glorybind, sand draw the plants such as grass.
As shown in figure 4, the step of plantation sand-fixation plant includes: that interval digs the first multiple plant hole 8, make to prolong along the coastline
The spacing range for stretching the first adjacent plant hole 8 of direction is 10cm~30cm, from by the adjacent first kind of plant of the lateral land side direction in sea
The spacing range in cave 8 is 40cm~50cm, and planting site climbs class plant into the first plant hole 8；Interval is dug multiple second
Plant hole 9 is located at second of plant hole 9 from leaning between two adjacent the first plant holes 8 of extra large laterally land side direction, along the coastline
The spacing range of adjacent second of the plant hole 9 of extending direction is 20cm~30cm, and plants strong root system into second of plant hole 9 and plant
Object.To plant manilagrass in the first plant hole 8, in second of plant hole 9 for plantation horse-tail, manilagrass and wood fiber crops
Yellow root system interlocks, and forms intensive firm structure of community, so as to play sand break and fixation function, and has preferably certainly
Right Effect of Ecological Restoration.Specific plantation step is as follows:
Leading seed treatment is wanted before manilagrass sowing, is impregnated 24 hours with 0.5% sodium hydroxide solution, then use clear water
Sowing is in nursery base after cleaning, drying；
The first plant hole 8 is dug to the sand ground region of land side in chiltern water front beach rampart, the section of the first plant hole 8 is circle,
Diameter is 5cm~15cm, and depth is 10cm~15cm, and the slow-release fertilizer being made of mud, organic fertilizer and guarantor are put into the first plant hole 8
Aqua, slow-release fertilizer quality are 100g~300g, and water-retaining agent dosage standard is 10g/ plants；
Second of plant hole 9 is dug between plant hole in two row manilagrass, the section of second of plant hole 9 is circle, and diameter is
20cm~40cm, depth are 30cm~50cm, are put into slow-release fertilizer and water-retaining agent, slow-release fertilizer in second of plant hole 9 in second of plant hole 9
It is made of mud, organic fertilizer, quality is 500g~1000g, and the water-retaining agent dosage standard in second of plant hole 9 is 50g/ plants；
Manilagrass seedling is embedded in the first plant hole 8, backfill is with a thickness of 5cm~10cm, then fills out husky to covering completely
Lid, and water to saturation；
Will be highly in 40cm or so, and the horse-tail seedling of inoculated rhizobium is embedded in second of plant hole 9, backfills soil thickness
It for 20cm~40cm, then fills out sand and is completely covered, and water to being saturated；Late maintaining is carried out to manilagrass and horse-tail, directly
It is required to reaching nature growth and breeding.Not only chiltern water front can be prevented to be etched by sand-fixation plant, but also can be fully retained
Seashore Tourist Trade function of the chiltern water front to extra large side sandy beach.
Sandy beach is set to form coastal line structure by mending husky repair, and in chiltern water front beach rampart to the sand ground region kind of land side
Sand-fixation plant is planted, so that the chiltern water front manually repaired be made to form stable structure similar with natural chiltern water front and coastal line
Characteristic.Thus it avoids chiltern water front from being corroded, without manually repairing repeatedly, and there is preferable natural ecology effect.
In addition, the chiltern water front also after reply reparation, annual to carry out profiling observation of the chiltern water front to extra large side seabeach,
Mainly to chiltern water front sea area hydrodynamic force situation, sandy beach material composition, change of size, change width, slope change and thickness become
Change and sandy beach loss late etc. are monitored.Chiltern water front is monitored to the sand-fixation plant growth conditions of land side simultaneously, in time
The repairing effect of chiltern water front is assessed, is that the maintenance of subsequent chiltern water front accumulates data, it is average further to refine and improve sandy beach
Each parameter value range in the gradient, beach berm elevation and the husky THICKNESS CALCULATION of benefit.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of chiltern water front restorative procedure, which comprises the steps of:
It determines and mends grains of sand diameter, sandy beach mean inclination, beach berm elevation and mend husky thickness；
It calculates and mends husky amount；
It carries out mending sand according to husky amount is mended.
2. chiltern water front restorative procedure according to claim 1, which is characterized in that described determining the step of mending grains of sand diameter wraps
It includes:
Calculate the quasi- average grain diameter for repairing water front deposit；
It is mended in husky particle size range default, selection is greater than the particle size values of the quasi- average grain diameter for repairing water front deposit as the benefit grains of sand
Diameter.
3. chiltern water front restorative procedure according to claim 2, which is characterized in that described to calculate quasi- reparation water front deposit
Average grain diameter the step of include:
In the range of quasi- reparation water front, the sampling of multiple groups deposit, the deposit sampling are carried out along water front extending direction interval
For from ocean, landwards direction extends and be more than or equal to 10 isometric deposits and sample, and make depth selection between 1.5m~
In the range of 2.5m；
Calculate the average grain diameter of deposit sample.
4. chiltern water front restorative procedure according to claim 1, which is characterized in that the step of determining beach berm elevation wraps
Include calculating beach berm elevation according to the following formula: Ht=bH, wherein HtFor beach berm elevation, unit m；H is 2 years~5 years general
Wave value at storm tidal flat foot, unit m；B is product coefficient, is chosen according to grains of sand diameter is mended；
As D=7mm, b=1.68；
As D=3mm, b=1.78；
As D=0.5mm, b=1.8；Wherein, D is to mend grains of sand diameter.
5. chiltern water front restorative procedure according to claim 1, which is characterized in that the step of the determining sandy beach mean inclination
Rapid includes calculating sandy beach mean inclination according to the following formula:Wherein, K is constant, is repaired when quasi-
When water front is erosion profile, K 0.3；When quasi- reparation water front is to become silted up to rise by type profile, K 0.5；α is sandy beach mean inclination；ρ is
Sand grain sinking speed is mended, unit is meter per second；HwFor wave effective height, unit is rice；L is wave wavelength, and unit is rice；T
For wave period, unit is the second；G is acceleration of gravity, unit m/s2；
Alternatively, the step of determining sandy beach mean inclination include: according to mending grains of sand diameter and the quasi- hydrodynamic force situation for repairing water front,
Selected sandy beach mean inclination.
6. chiltern water front restorative procedure according to claim 1, which is characterized in that described determining the step of mending husky thickness wraps
It includes:
The target depth of water: h is calculated according to the following formula1=Axn, wherein h1For the target area depth of water, unit is rice；X is target
At a distance from water front, unit is rice in region；The value of n is that 2/3, A is calculated by following formula: ρ=14D1.1, A=0.067
ρ0.44, wherein D is to mend grains of sand diameter, and unit is millimeter；ρ is to mend sand grain sinking speed, and unit is meter per second；A is beach profile
Scale coefficient；
It calculates according to the following formula and mends husky thickness: h=h2-h1, wherein h2The practical depth of water in water front region is repaired to be quasi-, h is to mend sand
Thickness.
7. chiltern water front restorative procedure according to claim 1, which is characterized in that the determining benefit grains of sand diameter, sandy beach are flat
The step of gradient, beach berm elevation and benefit sand thickness, includes:
It chooses to mark seashore；
From ocean, landwards direction extends, and multi-point is every sampling measuring and calculating to the morphological parameters of mark seashore；
Grains of sand diameter, sandy beach mean inclination, beach berm elevation and the husky thickness of benefit are mended according to the morphological parameters analogy to mark seashore is selected.
8. chiltern water front restorative procedure according to claim 1, which is characterized in that described to mend husky step and include:
Be laid with that bed course is husky, in the bed course sand: the gross mass accounting of quartz and feldspar is greater than 92%, shale amount accounting less than 2%,
Particle accounting of the partial size less than 1mm is less than 10%, and the particle size range of bed course sand is 1.2mm~2mm；
It is laid with surface layer sand, the gross mass accounting of quartz and feldspar is greater than 96% in the surface layer sand, and shale amount accounting is less than
0.2%, shell quality accounting is less than 1%, and the partial size of surface layer sand is less than or equal to 0.8mm.
9. chiltern water front restorative procedure according to claim 1, which is characterized in that consolidated after the step for mending sand
Sand, described the step of fixing the sand include: that sand-fixation plant is planted at beach rampart more than high-tide level.
10. chiltern water front restorative procedure according to claim 9, which is characterized in that the step of the plantation sand-fixation plant
Include:
Interval digs the first multiple plant hole (8), makes the spacing range of the first adjacent plant hole (8) of extending direction along the coastline
10cm~30cm is 40cm~50cm from the spacing range by the first adjacent plant hole (8) of the lateral land side direction in sea, and to the
A kind of interior planting site of plant hole (8) climbs class plant；
Interval digs multiple second of plant hole (9), and second of plant hole (9) is made to be located at lean on the lateral land side direction in sea adjacent certainly two
Between the first a plant hole (8), the spacing range of adjacent second of the plant hole (9) of extending direction is 20cm~30cm along the coastline,
And the strong root system plant of plantation into second of plant hole (9).
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| CN110904918B (en) * | 2019-10-25 | 2021-04-20 | 自然资源部第三海洋研究所 | Erosion coast plane composite beach repairing method |
| CN110904918A (en) * | 2019-10-25 | 2020-03-24 | 自然资源部第三海洋研究所 | Erosion coast plane composite beach repairing method |
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| CN111877249A (en) * | 2020-06-18 | 2020-11-03 | 自然资源部第三海洋研究所 | Low-energy coast beach restoration design method |
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| CN111967145A (en) * | 2020-07-28 | 2020-11-20 | 自然资源部第三海洋研究所 | Beach maintenance profile design method for reducing beach surface wind and sand strength |
| CN111967145B (en) * | 2020-07-28 | 2022-07-12 | 自然资源部第三海洋研究所 | Beach maintenance profile design method for reducing beach surface wind and sand strength |
| CN115748574A (en) * | 2022-11-17 | 2023-03-07 | 中国海洋大学 | Natural-like island beach maintenance design structure and construction method |
| CN115739972A (en) * | 2022-11-29 | 2023-03-07 | 广东海洋大学 | Method for efficient comprehensive restoration and remediation of polluted beach |
| CN116368983A (en) * | 2023-03-29 | 2023-07-04 | 自然资源部第三海洋研究所 | Coastal sand dune repairing and maintaining method |
| CN116368983B (en) * | 2023-03-29 | 2023-11-28 | 自然资源部第三海洋研究所 | Coastal sand dune repairing and maintaining method |
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