CN104619917B - The method preventing husky movement in sand ground - Google Patents
The method preventing husky movement in sand ground Download PDFInfo
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- CN104619917B CN104619917B CN201380046904.1A CN201380046904A CN104619917B CN 104619917 B CN104619917 B CN 104619917B CN 201380046904 A CN201380046904 A CN 201380046904A CN 104619917 B CN104619917 B CN 104619917B
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- net
- sand
- movement
- described net
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/28—Raised beds; Planting beds; Edging elements for beds, lawn or the like, e.g. tiles
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/52—Mulches
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Abstract
The present invention provides a kind of construction method preventing husky movement, even if described method use lightweight and in desert region etc. the material of also easily transport as preventing material that is husky mobile or that cultivate plant, and the operability arranged is well, alleviates the burden of operator, and also can cultivate plant.The method preventing husky movement of the present invention uses the net being made up of monofilament as preventing the material of sand movement, arranges described net with following state: a part for described net is embedded in sandy land surface, and another part of described net is erected at sandy land surface.
Description
Technical field
The present invention relates to the region covered by sand ground in desert region or sand dune and seashore etc. presses down
Make the method that the sand of this sand ground moves because of wind action and cultivates plant.
Background technology
In the region that desert region or the ground surface such as sand dune, seashore are covered by husky large area, should
Husky the most mobile due to wind-force etc., as the exemplary of above-mentioned region, have in China Inner Mongol
The migratory dune land that ancient area etc. is moved because of high wind, expanded.It is said that the sand in this area
Desertization because of down goat or sheep overgraze and drift sand gulps down implant and expands.It is said that it is logical
The sand crossing wind carrying is the reason causing sand and dust and yellow sand, it is desirable to alleviate by this region
The expectation of the disaster that sand is caused constantly is increased.
For this area is as ground, desert, precipitation is many and level of ground water is the highest, therefore, recognizes
For by suppressing, the sand drift near the top layer, ground caused by high wind is dynamic makes husky fixing, can carry out
Greening, makees method for achieving the above object, the most all uses and be referred to as straw checkerboard barrier
Method.
This greening method being referred to as straw checkerboard barrier be make use of straw, branch desertification control method it
One, i.e. mark cancellate line, along this clathrate at sandy land surface with 1～1.5m interval
Line scoop ditching, straw etc. is erected in this ditch.But, because following reason exists
Maintenance after arranging, management aspect existing problems: straw etc. are difficult to raise, because volume is big
It is difficult to transport (must transport on sand ground) to scene, and needs because of deteriorations such as straws
To be replaced in 2～3 years.
Patent documentation 1 is recorded by arranged in a crossed manner on sandy land surface for many cylindrical fabrics
Thus suppress the construction method of husky movement, but sand is loaded the very expense of the operation in cylindrical fabric
Power, is difficult after raining in the husky loading cylindrical fabric that will soak.Additionally, due to
The husky surface arranged becomes sunk structure, if therefore planting plants immediately after arranging, then deposits
In following problems: plant can be toppled over, need certain interval of time planting plants again after arranging；
Even if being loaded together with sand in cylindrical fabric by seed, bud is not longer from fabric
Deng.
Patent documentation 2 has been recorded many cylindrical fabrics of arrangement, to transplant therebetween seed or
The method of Seedling, but the operation loading sand in cylindrical fabric is heavy physical labour, and right
For the cylindrical fabric arranged in parallel that will be equipped with sand, also it is difficult as practical operation.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2008-291636 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2010-227093 publication
Summary of the invention
The problem of the present invention is, it is provided that prevents the construction method of husky movement, wherein, is used for preventing
Even if only sand is mobile or cultivates the material of plant and is lightweight and the most easily transports in desert region etc.
Defeated material, and the operability arranged is good, alleviates the burden of operator；Also provide for
The method that can cultivate plant in the region covered by sand ground.
The present invention completes, including following (1)～(10) for solving above-mentioned problem
Composition.
(1) a kind of method preventing husky movement, it is characterised in that use by monofilament
(monofilament) net constituted is as preventing the material of husky movement, by described net with following
State is arranged on sandy land surface: a part for described net is embedded in sand, and described net
Another part is erected at sandy land surface.
(2) method preventing husky movement as described in above-mentioned (1), it is characterised in that will
The bending in the way of making sandy land surface side become protuberance of the pars intermedia of described net, forms at least 1
Individual bending part, is embedded in this bending part in sand.
(3) method preventing husky movement as described in above-mentioned (1) or (2), its feature
Being, the height of another part of described net is away from sandy land surface 5～30cm.
(4) method preventing husky movement as according to any one of above-mentioned (1)～(3),
It is characterized in that, utilize the stiffness of the described net that Ge Lifa (Gurley method) records
It is 20～150mN.
(5) method preventing husky movement as according to any one of above-mentioned (1)～(4),
It is characterized in that, the described net pressure loss when wind speed 5m/min is 50～300Pa.
(6) method preventing husky movement as according to any one of above-mentioned (1)～(5),
It is characterized in that, the fiber number of described monofilament is 300～600dTex (point Tekes), described
The mesh size of net is 0.5～5mm.
(7) method preventing husky movement as according to any one of above-mentioned (1)～(6),
It is characterized in that, described monofilament comprises polylactic acid.
(8) method preventing husky movement as according to any one of above-mentioned (1)～(7),
It is characterized in that, seen from above, on sandy land surface in the way of intersected with each other along longitudinally and
Laterally it is respectively provided with multiple described nets.
(9) method preventing husky movement as according to any one of above-mentioned (1)～(7),
It is characterized in that, seen from above, sandy land surface arranges on vertical or horizontal multiple institutes
State net, when described net being arranged on longitudinally, the sand that prevents in addition to described net is moved
Material and described net be arranged at transversely across, or, described net is being arranged at horizontal stroke
Time upwards, the material preventing husky movement in addition to described net is arranged across with described net
In longitudinal direction.
(10) method preventing husky movement as according to any one of above-mentioned (1)～(9),
It is characterized in that, before a part for described net is embedded in sand, be embedded in sand while,
Or after being embedded in sand, the seed of plant is embedded in the sand near described net.
Owing to being lightweight for preventing the material of husky movement, so the present invention has a following effect:
It is prone to transport to scene, in the operation preventing husky movement, particularly operation after the rainy day
Property excellent.And then, the operation arranging the material preventing husky movement becomes easy, and simultaneously
Vegetation can also be formed by planting plants.
Accompanying drawing explanation
[Fig. 1] Fig. 1 is the sectional view of the state of the method preventing husky movement representing the present invention.
[Fig. 2] Fig. 2 is the configuration of the net in the method preventing husky movement representing the present invention
The top view of example.
Detailed description of the invention
The method preventing husky movement of the present invention uses the net being made up of monofilament (following, also known as
For " net of the present invention ") as preventing the material of husky movement, it is embedded in a part for this net
Sha Zhong and the another part netted are erected at the state of sandy land surface and are configured, and thus prevent
The most husky movement.
But net has the hardness that oneself is erect, if a part for the net of the present invention being embedded in sand
It is fixed, then remainder (that is, another portion of net of the net exposed from sandy land surface
Point) oneself is erected on the direction vertical with sandy land surface, the sand moved due to wind etc.
It is trapped in from prominent online of sandy land surface, thus prevents the diffusion of sand.
About the direction of the net burying the vertical present invention, blow in a certain direction for wind to the west etc.
During husky mobile of wind suppression, it be arranged on the direction vertical with wind direction by setting thus prevent
Husky movement is preferred.
It is embedded in sand as the part to net and another part of described net is erected at sand
The state of ground surface arranges the method for described net, can enumerate following methods: by the net of lamellar
It is erected at the method in the direction vertical with sandy land surface, then embedment sand；By lamellar
While the part embedment sandy land surface of net, another part of net is erected at sandy land surface
Method；Or by the net of lamellar a part embedment sandy land surface after, by net another
The method that part is erected at sandy land surface.From can shorten with net a part be embedded in sand,
And another part of described net is erected at the state of sandy land surface and arranges required for described net
From the viewpoint of time, it is preferred that the net with the web-like of the width of appropriateness is stretched to
Necessary length is configured, and fills in sand with scoop etc. by a part for net, exists if desired
The part of depression covers sand, thus erects and arranges net.
In addition it is also possible to net is formed bending part in the way of making sandy land surface side become protuberance,
This bending part is embedded in sand.For in the online region forming bending part, as long as can be with
Another part that a part for net is embedded in sand and nets is erected at the state of sandy land surface and enters
Row is arranged, and is not particularly limited, but is preferably the pars intermedia of the length direction along net.Need
It is noted that in the present invention that so-called " pars intermedia " refers to the relative both ends of net
Between part.That is, for the formation region of bending part, as long as can be with the width of net
Both ends on degree direction are erected at the state of sandy land surface and are configured, then be not limited,
The part etc. of the substantially central portion on the width of net or 1/3 can be properly selected.Additionally,
Throw the net for 1,1 bending part can be set, it is also possible to arranges the bending part of more than 2.
Fig. 1 is the sectional view of the state of the method preventing husky movement representing the present invention, it is shown that
Substantially central portion on the width of net arranges the example of bending part.
When a part for net 1 being filled in husky 3, by the substantially central portion of net so that downside is (husky
Ground surface side) become the mode bending of protuberance, form bending part 1a, this bending part 1a is filled in
Enter in husky 3, become the state shown in Fig. 1.Like this, it is possible to make the two ends phase of net
Sandy land surface is erect equably such that it is able to further reduce wind speed, it is possible to press down
Husky the dispersing, the most preferably of system.
In order to suppress the flowing of sand further, disperse, it is also possible to as shown in FIG. 2, hand over
Fork arranges the net of the fabric of multiple monofilament, sets up cross point thus forms the grid of certain intervals.
When setting up cross point thus form the grid of certain intervals, it is also possible to imbed in cross point
The stake of diameter about the 1cm formed by wood etc., thus cross point is fixed.
Specifically, (overlook) seen from above, with side intersected with each other on sandy land surface
Formula is along the net longitudinally and being laterally respectively provided with multiple present invention.Like this, by by the present invention
Net be configured to grid-like, for the wind from any direction, be all prevented from the movement of sand.
During additionally, set up cross point to be configured, according to the difference of the wind direction of setting area,
Direction is different, it is also possible to make grid as follows: stronger with the wind in a certain direction such as wind to the west
Direction be vertically arranged the net being made up of monofilament of the present invention, the side that wind at other is more weak
Set up the material thing as other forms preventing husky movement in addition to the net of the present invention
Material.As the material preventing husky movement in addition to the net of the present invention, can enumerate such as to
In cylindrical fabric (it is formed by acid fiber by polylactic) filling husky and obtain material, wheat straw,
The branch etc. of the neat length becoming appropriateness.
Specifically, (overlook) seen from above, on sandy land surface on vertical or horizontal
The net of multiple present invention is set, when being arranged at by described net on longitudinally, by except the present invention's
The material preventing husky movement beyond net and described net are arranged in a crossed manner in transversely, or,
When described net is arranged at transversely, by the material preventing husky movement in addition to the net of the present invention
Material is arranged in a crossed manner in longitudinal direction with described net.Like this, by using not for the strong and weak of wind
With the material preventing husky movement, it is also possible to prevent the material of sand movement being difficult to arrange in the past
Region the material preventing husky movement is set.
When arranging the grid of certain intervals, the interval of grid is preferably set to 0.5～2m.If side
Lattice be spaced apart 0.5～2m interval, then can suppress husky dispersing further.
When a part for the net being made up of monofilament burying the present invention is netted with setting, in order to from net
In by and reduce the wind speed of wind thus suppress husky dispersing, the net exposed from husky surface
Another part (remainder of net) highly preferred is away from sandy land surface 5～30cm, in order to
Husky the dispersing of suppression in high wind region further, the height of another part of net more preferably sets
It is set to the height of 10～20cm.
Additionally, by the part embedment Sha Zhongshi of net, need to be fixed so that wind can not shake
Dynamic net, preferably by net in depth direction embedment ground 5～about 20cm.
Additionally, as the method also carrying out afforesting while the movement husky in suppression, arranging
The seed sowing plant during net is preferred.Preferably, a part for net is being embedded in sand
Before in, be embedded in sand while or after being embedded in sand, the seed of plant is embedded in
In the sand of the vicinity of net.
Specifically, by net laying on the ground, one part is filled in Sha Zhongshi, at net
Above or below sow, bury together with net.In the case of Gai, due to can be certain by seed
Be transported to the soil layer containing water, therefore, it is possible to make germination more reliably, after germination,
Bud and root stretch out, so the growth of plant does not exist any problem from the mesh of net.In Fig. 1,
In the sand of the top that the seed 2 of plant is embedded in net.Or, net is embedded in sand, erects
After between net and net, imbed seed or Seedling.The situation of seed is sowed above or below net
Under, even if the animal such as goat, sheep wants to eat bud, net also can become obstruction.And then, due to
Root cannot be had, it is possible to suppression desertification, the most preferably.
For the kind of seed, it is not particularly limited, is preferably able to tolerate doing in desert
The plant of the weather that dry heat of extremely trembling with fear is the harshest, during additionally, plant is fixed, excellent
Choosing can be used as the plant of the feedstuff of domestic animal.Such as, when China uses, for Cortex Salicis Cheilophilae, Fructus Hippophae,
Husky rice, sheep bavin etc..
By afforesting the most simultaneously, in the situation of the net such as formed by polylactic acid (PLA)
Under, although after arranging in 5～10 years almost entirely biodegradation and disappear, but by
Cultivate plant before this, thus continued performance by this plant remaining thereafter and prevent husky movement
Effect.
It follows that the composition of the net of the present invention is illustrated.
The net of the present invention is made up of monofilament.Monofilament preferably by polyethylene terephthalate,
The thermoplastic resins such as polyamide, polypropylene, polylactic acid are made, and preferably comprising can be after arranging
Biodegradable resin.Particularly preferably by comprising polylactic acid, (it is representational biodegradation
Property resin) monofilament constitute net.The net being made up of the monofilament comprising polylactic acid is at ultraviolet
Deterioration it is not easy, even if under the strong ultraviolet irradiation environment in desert, also can under irradiation
Enough suppress the deterioration of the net being made up of monofilament.
Such as, when using polylactic acid in net, the molecular weight of polylactic acid is preferably with Weight-average molecular
Amount (Mw) is calculated as the scope of 10～200,000.If less than 100,000, then can not be had
The polylactic acid monofilament of sufficient intensity, therefore, when making net, often occurs silk to disconnect, raw
Productivity is low.During additionally, use the polylactic acid of more than 200,000, due to spinning temperature during spinning
Uprise, cause heat deterioration during spinning to carry out, therefore occur when producing net silk to disconnect, raw
Product becomes difficulty.The Mw of polylactic acid is by employing the chloroform gel infiltration as solvent
Chromatograph (GPC) measures the value being scaled polystyrene obtained.
Polylactic acid can also be copolymer.Lactic acid copolymer be lactic acid monomer or lactide and its
His composition (it can be with lactic acid monomer or lactide copolymerization) copolymerization is formed.As above-mentioned
Other compositions, can enumerate the functional group of the ester bond formative with more than 2 dicarboxylic acids,
Polyhydric alcohol, hydroxy carboxylic acid, lactone etc. and be made up of above-mentioned various constituents various poly-
Ester, various polyethers, various Merlon etc..Additionally, in order to increase molecular weight, can adopt
Use following method: use a small amount of chain extender such as hexamethylene diisocyanate, isophorone two
Two Carbimide .s such as isocyanates, xylylene diisocyanate, '-diphenylmethane diisocyanate
Ester compounds carries out the method for macromolecule quantization, or uses carbonate products to obtain fat
The method of race's polyestercarbonate.
Furthermore, it is possible to containing antioxidation in the range of the character not damaging lactide acid polymer
The additives such as agent or particle.When using acid fiber by polylactic silk, in the present invention, preferably polylactic acid
The carboxyl terminal amount of fiber is at 10 equivalents/below t.This carboxyl terminal amount is at 10 equivalents/below t
Time, it is possible to the hydrolysis of suppression acid fiber by polylactic.As the carboxyl terminal amount making acid fiber by polylactic
In the method for 10 equivalents/below t, such as aliphatic alcohol or acyl can be made in the material resin stage
The condensation reaction type compounds such as amines, carbodiimide compound, epoxide,
The chemical combination of the addition reaction-types such as isoxazoline compound, piperazine compound, nitrogen heterocycle propane compound
Things etc. react with the carboxyl terminal of polylactic acid, block.If using the additive reaction of the latter
Type compound, such as the end-capped that carried out by the dehydration condensation of alcohol and carboxyl that
Sample, it is not necessary to be discharged to outside reaction system by remaining by-product, therefore, is melting polylactic acid
During spinning, owing to addition reaction-type compound can be added so that it is hybrid reaction, therefore
Be conducive to obtaining in terms of practicality, have sufficiently high molecular weight, thermostability and hydrolytic resistance concurrently
Reaction formation.
In above-mentioned addition reaction-type compound, in polylactic acid, preferably add carbodiimide chemical combination
The method of thing.By with carbodiimide compound by polylactic acid polymer or the widow wherein contained
The reactivity end of polymers blocks, it is possible to make the reactivity end in polymer lazy
Property, the hydrolysis of suppression polylactic acid.Carbodiimide compound described herein, is preferably used
Such as recorded in Japanese Unexamined Patent Publication 11-80522 publication, diisocyanate cpd is gathered
The compound closed and obtain, wherein, the polymerization of preferably 4,4 '-dicyclohexyl methyl hydride carbodiimide
Thing, the polymer of four methyl benzene two methylene carbodiimides or its end are blocked by Polyethylene Glycol etc.
After compound.
As the end-capping reagent of polylactic acid, it is also preferred that epoxy compounds.By using by epoxy
The polylactic acid that compounds has blocked, it is possible to obtain necessary durability.Particularly preferably containing 3
Epoxy compounds more than sense, makes this 3 official can above epoxy compounds and poly-breast
At least some of reaction of acid.Further preferably make 3 officials can above epoxy compounds with
At least some of reaction of the end of polylactic acid.Above-mentioned 3 officials can above epoxy compounds
It it is the compound in 1 molecular compound with more than 3 epoxy radicals.As making every 1 point
Sub-compound has the reason of more than 3 epoxy radicals, is because melting with polylactic acid
Time mixing, a part is reacted with polylactic acid, and, when again carrying out melt molding, remaining
Epoxy radicals react with polylactic acid further, thus molecular weight increase, it is possible to significantly increase
The durability of final molding thing.Additionally, it is sub-with other terminal-reactive materials, such as carbon two
Amines is compared, and epoxy compounds is slow with the response speed of polylactic acid.Therefore, if making
The material added in polylactic acid is epoxide, then the molecular weight of polylactic acid will not be excessive
Ground becomes big, thus it is not easy to become the structure that epoxy radicals is all reacted with polylactic acid, easily
Obtain remaining in polylactic acid short-fiber and have the structure of unreacted epoxy radicals.
Additionally, 3 officials used in the present invention can epoxy compounds above be more preferably 1
Individual intramolecular at least have 1 glycidyl ether carbonyl (glycidyloxy carbonyl) or
The compound of N-(glycidyl) amide groups.
About epoxy compounds, by with epoxy compounds by polylactic acid polymer and
In the reactivity end of oligomer that contains block, it is possible to make the reaction in polymer
Reactive terminal deactivation, the hydrolysis of suppression polylactic acid.This reactivity end has hydroxyl, carboxylic
Base, epoxy compounds is excellent to the end-blocking of carboxyl.The addition of epoxy compounds by
Carboxyl terminal amount determines.And then, owing to the remaining oligomers such as lactide can also be by hydrolysis
Produce carboxyl terminal, it is advantageous to be by the carboxyl terminal of polymer with from remaining oligomerization
The carboxyl terminal of thing or monomer adds and below 2 times of equivalents of total carboxyl terminal amount of obtaining.Logical
Cross end-capped, make total carboxyl terminal concentration relative to polylactic acid generally 10 equivalent/below t
Time, it is possible to significantly improve hydrolytic resistance, the most preferably.
The content of polylactic acid relative to net generally 50 mass % more than, more preferably 80
More than quality %, more than the most preferably 90 mass %.
Further, it is also possible to blend UV resistant performance in thermoplastic resin to improve agent, titanium etc.
Inorganic substances.
The fiber number of the monofilament used in the net of the present invention is preferably 200～800dTex (dtexs
Ke Si).When using the fiber number monofilament less than 200dTex, the composition radical of net increases, because of
This cost uprises, and becomes defective.During additionally, use the fiber number monofilament more than 800dTex,
Net hardening, net wound into rolls is carried out carrying and becomes difficulty.The fiber number of monofilament is more preferably
300～600dTex.
Intensity for the monofilament of the net of the present invention is preferably 2.5～5.5cN/dTex (li newton
(centi-newton)/point Tekes).
Owing to a part for the net of the present invention is being embedded in Sha Zhongshi, net is erect, so needing
The resistance of wind to be born.Therefore, net needs certain hardness, so network optimization is selected by fabric shape
Become.Composition as fabric, it is possible to use plain cloth, twills, satin fabric etc.,
But plain cloth can make the higher fabric of hardness, the most preferably.
Net in order to will be made up of monofilament is erect, and needs the hardness of appropriateness, utilizes JIS L1096
Described in the stiffness that records of flexural resilience A method (Ge Lifa) be preferably 20～150mN.
During for above-mentioned scope, when a part for net is embedded in sand ground, the net exposed from husky surface
Remainder oneself erect without toppling over.The stiffness utilizing Ge Lifa to record is entered
One step is preferably in the range of 40～100mN.
Additionally, vertical by the net being made up of monofilament being erect, burying, it is possible to pass through mesh at wind
Time moderately reduce wind speed, sand contained in wind falls and each other thus accumulates at net, it is possible to
The movement that suppression is husky further.Therefore, the mesh size of the net of the present invention is 0.5～4mm to see
Fang Shi, it is possible to obtain the pressure loss of appropriateness, it is advantageous to.Herein, mesh size refers to
Grid.The mesh size of net is more preferably 1～3mm square.
Additionally, about the pressure loss for reducing wind speed, measure under the wind speed of 5m/min
The differential pressure of net, as the pressure loss, the present invention is made up of the monofilament comprising polylactic acid
The pressure loss of net be preferably 50～300Pa scope.The pressure loss hour, Netcom is out-of-date
Wind speed will not reduce, therefore prevent the ability of husky movement from dying down, on the other hand, pressure damage
When losing big, the resistance of wind is big, and net by wind or is blown and flies, and therefore prevents the effect of husky movement
Become unstable.The pressure loss of net is more preferably 70～200Pa.
As the coefficient of the UV resistant degradation characteristic of the net being made up of monofilament, implement to utilize base
Solarization climate test case (Sunshine Weather Meter) in JIS B 7753 (2007)
During the deterioration test that test is carried out, the rupture strength retention after 450 hours is preferably 70%
Above.If the rupture strength in this test is more than 70%, though then strong in desert
Under ultraviolet, it is also possible to maintain form more than 3 years.Rupture strength more preferably 80%
Above.
Embodiment
Hereinafter, based on embodiment, the present invention will be described in further detail, but this
Bright it is not limited to these embodiments.
It should be noted that about the parameter occurred in explanation above, for being carried out as follows
The value measured and obtain.
A. the weight average molecular weight of polylactic acid
Polylactic acid net is dissolved in chloroformic solution, makes mensuration solution.Use gel infiltration
It is measured by chromatograph (GPC) (solvent: chloroform), is asked by polystyrene conversion
Go out weight average molecular weight.
B. hot strength, tensile elongation
It is measured according to JIS L 1013:1999 8.5.1.
When loosely stretching, sample is arranged on stretching with cloth gripper interval 20cm
The cloth of testing machine (Orientec company system " Tensilon " (registered trade mark) UCT-100)
On pincers, tested by the draw speed constant speed elongation of 20cm/ minute.To apply initial
Elongation during load is pronounced lax (mm), and then tensile sample, measures when sample disconnects
Load and elongation (mm), calculate tensile strength (hot strength) and percentage elongation by following formula
(tensile elongation).Test number (TN) is 10 times, calculates its meansigma methods.
Tb=SD/F0
Herein, Tb: tensile strength, SD: intensity during disconnection, the positive quantity of F0: sample is fine
Degree.
Percentage elongation (%)=[(E2-E1)/(L+E1)] × 100
Herein, E1: lax (mm), E2: the elongation (mm) during disconnection, L: cloth gripper
Interval (mm).
C. the mesh netted
Observing surface with magnifier, n number is 10, obtains meansigma methods.
D. the pressure loss
Use analyzer as the form 3 described in JIS B9908, will not arrange to net
The mode of portion's internal leakage air overlaps 2 and throws the net, and is measured, and the differential pressure recorded is pressure
Power is lost.
It should be noted that measuring area is 176.7cm2(150mmφ)。
E. stiffness
For the value utilizing flexural resilience A method (Ge Lifa) described in JIS L1096 to obtain.
F. UV degradation test
According to JIS B 7753 method, 1 cycle for irradiating 180min/ rainfall 12min, black
Under conditions of color panel (black panel) temperature 63 DEG C, humidity 50%Rh, use Exposure to Sunlight
Climatic test cabinet (Suga testing machine Co., Ltd. system), implements the irradiation of 450 hours to net.
After pre-irradiation, measure hot strength, obtain the conservation rate (%) of fracture strength.N number is 5,
Obtain meansigma methods.
G. application property
During for the goods and materials preventing husky movement being constructed in desert, everyone work
Measure (10 minutes), be evaluated by following 3 grades.
◎: everyone construction area is 7m2Above, operability is the most excellent.
Zero: everyone construction area is 5m2Above, operability is excellent.
×: everyone construction area is less than 5m2, operability is poor.
H. the effect of husky movement is prevented
The goods and materials preventing husky movement are arranged in desert, after 1 year, husky moving state are converged
Always, following 4 grades are used to be evaluated.
◎: preventing the goods and materials of husky movement not to be embedded in sand, the effect preventing husky movement is non-
Chang Gao.
Zero: prevent a part for the goods and materials of husky movement to be embedded in sand, prevent husky mobile
Effect high.
△: prevent a part for the goods and materials of husky movement to be embedded in sand, or in grid
The husky surface of central part becomes depression, and the effect preventing husky movement is the poorest.
×: it is not prevented from the effect of husky movement.
(manufacture of polylactic acid)
A () manufactures example 1 (manufacture of polylactic acid)
At double (2 ethyl hexanoic acid) tin catalyst (lactide/catalyst molar ratio=10000:1)
In the presence of, will be manufactured by the L lactic acid of optical purity 99.5% in 180 DEG C under nitrogen atmosphere
Lactide carry out being polymerized 160 minutes, obtain polylactic resin P1.The polylactic acid obtained
Weight average molecular weight is 180,000.
B () manufactures example 2 (manufacture of polylactic acid)
At double (2 ethyl hexanoic acid) tin catalyst (lactide/catalyst molar ratio=10000:1)
In the presence of, will be manufactured by the L lactic acid of optical purity 99.5% in 180 DEG C under nitrogen atmosphere
Lactide carry out being polymerized 140 minutes, obtain polylactic resin P2.The polylactic acid obtained
Weight average molecular weight is 14.5 ten thousand.
(embodiment 1)
The polylactic resin P1 melt spinning stretching obtained in example 1 will be manufactured, obtain 420
The monofilament of dTex.The intensity of the polylactic acid monofilament obtained is 3.5cN/dTex, percentage elongation: 35%.
The monofilament rapier loom (rapier loom) obtained is made net, make width be 2m,
A length of 400m, mesh size are 1mm × 1mm.Then, cut with melted fire-tongs is melted
It is cut into 0.5m width, is made as preventing the net of the material of husky movement.The pressure loss of net is
186Pa, stiffness is 84mN, and the strength retention in UV degradation test is 85%.
In the way of the net that obtains is vertical with the strongest wind direction, it is embedded near the central part of net
100m2Generally flat sandy land surface, make the height distance sandy land surface 5～15cm of net,
It is configured with 1m interval.Application property when 4 bit manipulation persons are configured is 18.0m2/10
Minute, the most excellent, it is evaluated as " ◎ ".
State after 1 year is confirmed, prevents the material of husky movement not to be embedded in sand,
Obtain the high effect preventing husky movement, be evaluated as "○".
(embodiment 2)
Use net same as in Example 1, as shown in Figure 2 a part for net is embedded in
100m2Substantially planar sandy land surface, make the height distance sandy land surface 10～20 of net
Cm, is arranged to the clathrate of spacing 1m in the way of square crossing.4 bit manipulation persons are carried out
Application property when arranging is 9.5m2/ 10 minutes, the most excellent, it is evaluated as " ◎ ".
State after 1 year is confirmed, prevents the material of husky movement not to be embedded in sand,
Obtain the highest effect preventing husky movement, be evaluated as " ◎ ".
(embodiment 3)
Making mesh size is 2mm × 2mm, in addition, uses similarly to Example 1
Method obtains net.The pressure loss of net is 80Pa, and stiffness is 40mN, UV degradation
Strength retention in test is 83%.
At 100m2The substantially planar sandy land surface on sand dune, in the way of square crossing
The net obtained is arranged to the clathrate at 1m interval.Construction when 4 bit manipulation persons are configured
Property is 8.0m2/ 10 minutes, the most excellent, it is evaluated as " ◎ ".
State after 1 year confirmed, it was observed that a part prevents the thing of husky movement
The phenomenon that money is embedded in sand, it is thus achieved that the high effect preventing husky movement, is evaluated as "○".
(embodiment 4)
Within 4000m/ minute, melt manufacturing the polylactic resin P2 obtained in example 2 with spinning speed
Melt spinning, obtain 106dTex, the semi-drawing silk of 26 long filaments (Filament).By its two
Carry out stretching-false twisting processing together, obtain 167dTex, the once heating false twisting of 52 long filaments adds
Work silk.3.5 inches of still footpath, the circular knitter of 22 pin numbers (gauge) is used to be made into
The fabric of tubular.
Substantially planar sandy land surface 100m on sand dune2In, the net obtained is arranged on
On the direction that the direction stronger with wind is vertical, (it is to load in cylindrical fabric to make material
Husky and obtain) with described net square crossing, form the clathrate at 1m interval.4 bit manipulations
Application property when member is configured is 5.0m2/ 10 minutes, it is evaluated as "○".
State after 1 year is: a part for cylindrical fabric is embedded in sand, becomes in grid
Slightly cave in, it is thus achieved that the high effect preventing husky movement, be evaluated as " ◎ ".
(embodiment 5)
Making mesh size is 3mm × 3mm, in addition, uses similarly to Example 1
Method obtains net.The pressure loss of net is 52Pa, and stiffness is 22mN.
At 100m2The substantially planar sandy land surface on sand dune, in the way of square crossing
The net obtained is arranged to the clathrate at 1m interval.About application property when arranging, due to
The stiffness of net is low, so i.e. using spade to fill in sand by net, the setting of net is the poorest,
But operability is 5.8m2/ 10 minutes, it is evaluated as "○".
Being confirmed the state after 1 year, a part of net goods and materials are embedded in soil, prevent sand
The effect of movement is the result of "○".
(embodiment 6)
Use method similarly to Example 2 that net is set, but a part for net is being earthed
Before in, net unfolding becoming the length of regulation, sheep bavin sowed by the central part on net
Seed, fills in ground surface by the central part of net, and seed is embedded in soil the most as shown in Figure 1
In.
Application property when 4 bit manipulation persons are configured is 8.8m2It is/10 minutes, the most excellent,
It is evaluated as " ◎ ".
State after 1 year is confirmed, prevents the goods and materials of husky movement not to be embedded in sand,
Further, sheep bavin germinates between the V word of net, it is thus achieved that the highest effect preventing husky movement,
It is evaluated as " ◎ ", afforestation effect can also be obtained simultaneously.
(embodiment 7)
Use method similarly to Example 2 that net is set, the sand in the grid of spacing 1m
The upper seed spreading ocean bavin.
State after 1 year is confirmed, prevents the goods and materials of husky movement not to be embedded in sand,
Further, ocean bavin germinates in grid, it is thus achieved that the highest effect preventing husky movement, evaluates
For " ◎ ", afforestation effect can also be obtained simultaneously.
(embodiment 8)
Obtain the monofilament of the 420dTex formed by polyethylene terephthalate.Obtain
The intensity of monofilament is 4.7cN/dTex, percentage elongation: 40%.
The monofilament rapier loom obtained is made net, and to make width be 2m, a length of 400m,
Mesh size is 1mm × 1mm.Then, cut into 0.5m width with melted fire-tongs is melted,
It is made as preventing the net of the material of husky movement.The pressure loss of net is 173Pa, stiffness
For 78mN, the strength retention in UV degradation test is 70%.
In the way of the net that obtains is vertical with the strongest wind direction, it is embedded near the central part of net
100m2Generally flat sandy land surface, make the height distance sandy land surface 5～15cm of net,
It is configured with 1m interval.Application property when 4 bit manipulation persons are configured is 18.0m2/10
Minute, the most excellent, it is evaluated as " ◎ ".
State after 1 year is confirmed, prevents the material of husky movement not to be embedded in sand,
Obtain the high effect preventing husky movement, be evaluated as "○".
(comparative example 1)
Only use embodiment 4 uses in cylindrical fabric (it is formed by polylactic acid)
The goods and materials that filling is husky and obtains, at 100m2Substantially planar sandy land surface, with vertically
The mode intersected is arranged to the clathrate of spacing 1m.Construction when 4 bit manipulation persons are configured
Property is 5.0m2/ 10 minutes, operability was poor, was evaluated as "×".
Being confirmed the state after 1 year, a part for goods and materials is embedded in sand, or side
The husky surface of the central part in lattice becomes depression, prevents the weak effect of husky movement, for " △ "
Result.
(comparative example 2)
By the commercially available nonwoven fabric of long fibers being made up of the multifilament of polyethylene terephthalate
(weight per unit area 100g/m2) cut into 50cm width, it is wound into 400m length.Long fibre
The pressure loss of dimension non-woven fabrics is 452Pa, and stiffness is 0.81mN, and UV degradation is tested
In strength retention be 70%.
For nonwoven fabric of long fibers, in the way of nonwoven fabric of long fibers is vertical with the strongest wind direction,
It is embedded in 100m by near the central part of nonwoven fabric of long fibers2Generally flat sandy land surface,
Make the height distance sandy land surface 5～15cm of net, be configured with 1m interval.4 bit manipulations
Application property when member is configured is 18.0m2/ 10 minutes, the most excellent, it is evaluated as " ◎ ".
Being confirmed the state after 1 year, nonwoven fabric of long fibers is broken by the wind, or one
Part is flown by wind, does not obtains the effect preventing husky movement, is evaluated as "×".
Describe the present invention in detail and with reference to specific embodiment, for this
For skilled person, it is clear that can be in the situation without departing from the spirit and scope of the invention
Under the present invention is made various changes and modifications.This application claims in JIUYUE in 2012 10 days
The priority of the Japanese patent application (Japanese Patent Application 2012-198111) proposed, by its content
It is incorporated by reference in the application.
Description of reference numerals
1: net
1a: bending part
2: the seed of plant
3: husky (ground)
Claims (9)
1. the method preventing husky movement, it is characterized in that, use the net being made up of monofilament as the material preventing husky movement, described net is arranged on sandy land surface with following state: a part for described net is embedded in sand, and another part of described net is erected at sandy land surface, and, wherein, by the bending in the way of making sandy land surface side become protuberance of the pars intermedia of described net, form at least 1 bending part, this bending part is embedded in sand.
The method preventing husky movement the most as claimed in claim 1, it is characterised in that the height of another part of described net is away from sandy land surface 5～30cm.
The method preventing husky movement the most as claimed in claim 1 or 2, it is characterised in that the stiffness utilizing the described net that Ge Lifa records is 20～150mN.
The method preventing husky movement the most as claimed in claim 1 or 2, it is characterised in that the described net pressure loss when wind speed 5m/min is 50～300Pa.
The method preventing husky movement the most as claimed in claim 1 or 2, it is characterised in that the fiber number of described monofilament is 300～600dTex (point Tekes), and the mesh size of described net is 0.5～5mm.
The method preventing husky movement the most as claimed in claim 1 or 2, it is characterised in that described monofilament comprises polylactic acid.
The method preventing husky movement the most as claimed in claim 1 or 2, it is characterised in that seen from above, on sandy land surface, in the way of intersected with each other, edge longitudinally and is laterally respectively provided with multiple described nets.
The method preventing husky movement the most as claimed in claim 1 or 2, it is characterized in that, seen from above, sandy land surface arranges on vertical or horizontal multiple described nets, when described net being arranged on longitudinally, the material preventing husky movement in addition to described net is arranged at transversely across with described net, or, when described net is arranged at transversely, the material preventing husky movement in addition to described net is arranged on longitudinally across with described net.
The method preventing husky movement the most as claimed in claim 1 or 2, it is characterised in that before a part for described net is embedded in sand, be embedded in sand while or after being embedded in sand, the seed of plant is embedded in the sand near described net.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012198111 | 2012-09-10 | ||
| JP2012-198111 | 2012-09-10 | ||
| PCT/JP2013/074121 WO2014038668A1 (en) | 2012-09-10 | 2013-09-06 | Method for preventing sand movement in sandy soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104619917A CN104619917A (en) | 2015-05-13 |
| CN104619917B true CN104619917B (en) | 2016-08-24 |
Family
ID=50237273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380046904.1A Active CN104619917B (en) | 2012-09-10 | 2013-09-06 | The method preventing husky movement in sand ground |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6160609B2 (en) |
| CN (1) | CN104619917B (en) |
| WO (1) | WO2014038668A1 (en) |
| ZA (1) | ZA201501616B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541287A (en) * | 2022-03-02 | 2022-05-27 | 南通大学 | Colorful degradable sand barrier and preparation method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5351601Y2 (en) * | 1975-10-13 | 1978-12-09 | ||
| JPS5351601A (en) * | 1976-10-19 | 1978-05-11 | Shizuo Washimi | Excavating machine for use in digging hole |
| JPH06264415A (en) * | 1992-06-29 | 1994-09-20 | Nippon Solid Co Ltd | Prevention method of preventing surface soil from flying and muddy water on rainy day |
| CN100501006C (en) * | 2006-09-22 | 2009-06-17 | 孙显科 | Multi-directional wind resistant three-dimensional grid series polymer vertical hanging sand-obstacle and method for manufacturing same |
| CN101294372A (en) * | 2007-04-27 | 2008-10-29 | 东丽株式会社 | Sand drift prevention method and tubular knit fabric for columnar sandbag |
| CN101440607A (en) * | 2007-11-20 | 2009-05-27 | 嵊州市娄志平生态工程研究所 | Serial-connected sand-trapping net and sediment storage dam built with the same |
| JP2009203681A (en) * | 2008-02-27 | 2009-09-10 | Purotekku Engineering:Kk | Rock fall preventing structure and rock fall preventing method |
| CN101614005B (en) * | 2008-06-26 | 2011-03-23 | 虞毅 | Sand-protecting barrier made from biodegradable materials and preparation method thereof |
| JP5477637B2 (en) * | 2009-03-05 | 2014-04-23 | 東レ株式会社 | Plant growth method in sand |
-
2013
- 2013-09-06 CN CN201380046904.1A patent/CN104619917B/en active Active
- 2013-09-06 WO PCT/JP2013/074121 patent/WO2014038668A1/en active Application Filing
- 2013-09-06 JP JP2014504095A patent/JP6160609B2/en not_active Expired - Fee Related
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2015
- 2015-03-10 ZA ZA2015/01616A patent/ZA201501616B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2014038668A1 (en) | 2016-08-12 |
| WO2014038668A1 (en) | 2014-03-13 |
| CN104619917A (en) | 2015-05-13 |
| ZA201501616B (en) | 2016-10-26 |
| JP6160609B2 (en) | 2017-07-12 |
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